JP2021009934A - Heat dissipation component - Google Patents
Heat dissipation component Download PDFInfo
- Publication number
- JP2021009934A JP2021009934A JP2019123142A JP2019123142A JP2021009934A JP 2021009934 A JP2021009934 A JP 2021009934A JP 2019123142 A JP2019123142 A JP 2019123142A JP 2019123142 A JP2019123142 A JP 2019123142A JP 2021009934 A JP2021009934 A JP 2021009934A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- dissipating component
- metal member
- straight
- straight sections
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 230000003746 surface roughness Effects 0.000 claims abstract description 16
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- 238000005520 cutting process Methods 0.000 claims description 16
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- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
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- 238000005259 measurement Methods 0.000 abstract description 10
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Abstract
Description
本発明は、放熱性部品に関する。 The present invention relates to heat radiating components.
近年、電気自動車等の動力源として電池が注目されている。高出力で、かつ、大容量の電池は充放電過程において多量の熱を発生し、この熱によって電池の劣化が引き起こることが知られている。よって、電池には放熱性を高める部品が求められている。
また、発熱素子である半導体素子を搭載した電子部品は従来から熱対策が重要視されている。特に、近年の電子部品の小型化・高密度実装化の傾向、あるいはマイクロプロセッサ類の高速化に伴い、電子部品１つあたりの消費電力は著しく増大しており、放熱性を高める部品が求められている。
In recent years, batteries have been attracting attention as a power source for electric vehicles and the like. It is known that a high-output and large-capacity battery generates a large amount of heat in the charge / discharge process, and this heat causes deterioration of the battery. Therefore, batteries are required to have parts that enhance heat dissipation.
In addition, heat countermeasures have been regarded as important for electronic components equipped with semiconductor elements, which are heat generating elements. In particular, with the recent trend toward miniaturization and high-density mounting of electronic components, or the speeding up of microprocessors, the power consumption per electronic component has increased remarkably, and components with improved heat dissipation are required. ing.
放熱部品として、例えば、金属樹脂複合体が挙げられる。このような金属樹脂複合体に関する技術としては、例えば、特許文献１（国際公開第２０１６／０８４３９７号）に記載のものが挙げられる。 Examples of the heat radiating component include a metal resin composite. Examples of the technique relating to such a metal-resin composite include those described in Patent Document 1 (International Publication No. 2016/084393).
特許文献１には、熱伝導性樹脂組成物よりなる部材と表面処理した金属よりなる部材とが、上記熱熱伝導性樹脂組成物の射出成形によって接触接合されている金属樹脂複合体であって、上記熱伝導性樹脂組成物が熱可塑性樹脂（Ａ）と無機充填材（Ｂ）を含有し、面方向の熱伝導率が１Ｗ／（ｍ・Ｋ）以上のものであり、さらに上記無機充填材（Ｂ）が特定の物性を有する無機粒子および特定の物性を有する無機繊維よりなる群から選択される少なくとも１種であることを特徴とする、金属樹脂複合体が開示されている。
特許文献１には、このような金属樹脂複合体は、優れた放熱性及び成形加工性を有し、軽量であり、且つ容易に安価で製造できると記載されている。
Patent Document 1 describes a metal-resin composite in which a member made of a thermally conductive resin composition and a member made of a surface-treated metal are contact-bonded by injection molding of the thermally conductive resin composition. The thermally conductive resin composition contains the thermoplastic resin (A) and the inorganic filler (B), has a thermal conductivity of 1 W / (m · K) or more in the plane direction, and is further filled with the inorganic filler. A metal resin composite is disclosed, wherein the material (B) is at least one selected from the group consisting of inorganic particles having specific physical properties and inorganic fibers having specific physical properties.
Patent Document 1 describes that such a metal-resin composite has excellent heat dissipation and molding processability, is lightweight, and can be easily and inexpensively manufactured.
電子部品や電池等の発熱体の高性能化に伴い、発熱体の発熱量が増加している。そのため、放熱性部品には、さらなる放熱性の向上が求められている。 As the performance of heating elements such as electronic components and batteries has improved, the amount of heat generated by the heating elements has increased. Therefore, the heat-dissipating component is required to further improve the heat-dissipating property.
本発明は上記事情に鑑みてなされたものであり、放熱特性に優れた放熱部品を提供するものである。 The present invention has been made in view of the above circumstances, and provides a heat radiating component having excellent heat radiating characteristics.
本発明者らは、金属部材からなる放熱性部品の放熱性を向上させるために、金属部材の表面の十点平均粗さ（Ｒｚｊｉｓ）を調整することを検討した。
しかし、金属部材の表面の十点平均粗さ（Ｒｚｊｉｓ）を単に調整するだけでは金属部材の放熱性を十分に向上させることができないことが明らかとなった。
そこで、本発明者らは、金属部材からなる放熱性部品の放熱性を向上させるための設計指針についてさらに鋭意検討した。その結果、金属部材表面の粗さ曲線の負荷長さ率（Ｒｍｒ）という尺度がこうした設計指針として有効であることを見出し、本発明に到達した。
The present inventors have studied to adjust the ten-point average roughness (R zjis ) of the surface of the metal member in order to improve the heat dissipation of the heat-dissipating component made of the metal member.
However, it has become clear that the heat dissipation of the metal member cannot be sufficiently improved by simply adjusting the ten-point average roughness (R zjis ) of the surface of the metal member.
Therefore, the present inventors have further diligently studied a design guideline for improving the heat dissipation of a heat-dissipating component made of a metal member. As a result, they have found that a measure called the load length ratio (Rmr) of the roughness curve of the surface of the metal member is effective as such a design guideline, and arrived at the present invention.
すなわち、本発明によれば、以下に示す放熱性部品が提供される。 That is, according to the present invention, the heat-dissipating parts shown below are provided.
［１］
金属部材からなる放熱性部品であって、
上記金属部材の表面上の、平行関係にある任意の３直線部、および当該３直線部と直交する任意の３直線部からなる合計６直線部について、ＪＩＳ Ｂ０６０１：２００１（対応国際規格：ＩＳＯ４２８７）に準拠して測定される表面粗さが以下の要件（１）および（２）を同時に満たす放熱性部品。
（１）切断レベル２０％、評価長さ４ｍｍにおける粗さ曲線の負荷長さ率（Ｒｍｒ）が３０％以下である直線部を１直線部以上含む
（２）すべての直線部の、評価長さ４ｍｍにおける十点平均粗さ（Ｒｚｊｉｓ）が２μｍを超える
［２］
上記［１］に記載の放熱性部品において、
上記金属部材の表面上の、平行関係にある任意の３直線部、および当該３直線部と直交する任意の３直線部からなる合計６直線部について、ＪＩＳ Ｂ０６０１：２００１（対応国際規格：ＩＳＯ４２８７）に準拠して測定される表面粗さが以下の要件（３）をさらに満たす放熱性部品。
（３）切断レベル４０％、評価長さ４ｍｍにおける粗さ曲線の負荷長さ率（Ｒｍｒ）が６０％以下である直線部を１直線部以上含む
［３］
上記［１］または［２］に記載の放熱性部品において、
上記金属部材の表面上の、平行関係にある任意の３直線部、および当該３直線部と直交する任意の３直線部からなる合計６直線部について、すべての直線部の上記十点平均粗さ（Ｒｚｊｉｓ）が５μｍを超える放熱性部品。
［４］
上記［３］に記載の放熱性部品において、
上記金属部材の表面上の、平行関係にある任意の３直線部、および当該３直線部と直交する任意の３直線部からなる合計６直線部について、すべての直線部の上記十点平均粗さ（Ｒｚｊｉｓ）が１５μｍ以上である放熱性部品。
［５］
上記［１］乃至［４］のいずれか一つに記載の放熱性部品において、
上記金属部材の表面上の、平行関係にある任意の３直線部、および当該３直線部と直交する任意の３直線部からなる合計６直線部について、ＪＩＳ Ｂ０６０１：２００１（対応国際規格：ＩＳＯ４２８７）に準拠して測定される表面粗さが以下の要件（４）をさらに満たす放熱性部品。
（４）すべての直線部の、粗さ曲線要素の平均長さ（ＲＳｍ）が１０μｍを超え３００μｍ未満である
［６］
上記［１］乃至［５］のいずれか一つに記載の放熱性部品において、
上記金属部材はアルミニウム製部材、アルミニウム合金製部材、銅製部材および銅合金製部材からなる群から選択される少なくとも一種の部材により構成されている放熱性部品。
［７］
上記［１］乃至［６］のいずれか一つに記載の放熱性部品において、
上記金属部材に樹脂部材が接合されていない放熱性部品。
［８］
上記［１］乃至［７］のいずれか一つに記載の放熱性部品において、
上記金属部材に樹脂部材が接合された放熱性部品。
［９］
上記［１］乃至［８］のいずれか一つに記載の放熱性部品において、
放熱性筐体、ヒートシンクまたは熱交換器である放熱性部品。
[1]
A heat-dissipating component made of a metal member
JIS B0601: 2001 (corresponding international standard: ISO4287) for a total of 6 straight sections consisting of arbitrary 3 straight sections on the surface of the metal member that are in a parallel relationship and arbitrary 3 straight sections that are orthogonal to the 3 straight sections. A heat-dissipating component whose surface roughness measured in accordance with the above meets the following requirements (1) and (2) at the same time.
(1) Includes one or more straight sections where the load length ratio (Rmr) of the roughness curve at a cutting level of 20% and an evaluation length of 4 mm is 30% or less (2) Evaluation lengths of all straight sections Ten-point average roughness (R zjis ) at 4 mm exceeds 2 μm [2]
In the heat-dissipating component described in [1] above,
JIS B0601: 2001 (corresponding international standard: ISO4287) for a total of 6 straight sections consisting of arbitrary 3 straight sections on the surface of the metal member that are in a parallel relationship and arbitrary 3 straight sections that are orthogonal to the 3 straight sections. A heat-dissipating component whose surface roughness measured in accordance with the above further satisfies the following requirement (3).
(3) One or more straight portions including a straight portion in which the load length ratio (Rmr) of the roughness curve at a cutting level of 40% and an evaluation length of 4 mm is 60% or less [3]
In the heat-dissipating component according to the above [1] or [2],
For a total of 6 straight sections consisting of any 3 straight sections in parallel on the surface of the metal member and any 3 straight sections orthogonal to the 3 straight sections, the 10-point average roughness of all straight sections. A heat-dissipating component with (R zjis ) exceeding 5 μm.
[4]
In the heat-dissipating component described in [3] above,
For a total of 6 straight sections consisting of any 3 straight sections in parallel on the surface of the metal member and any 3 straight sections orthogonal to the 3 straight sections, the 10-point average roughness of all straight sections. A heat-dissipating component having (R zjis ) of 15 μm or more.
[5]
In the heat-dissipating component according to any one of the above [1] to [4],
JIS B0601: 2001 (corresponding international standard: ISO4287) for a total of 6 straight sections consisting of arbitrary 3 straight sections on the surface of the metal member that are in a parallel relationship and arbitrary 3 straight sections that are orthogonal to the 3 straight sections. A heat-dissipating component whose surface roughness measured in accordance with the above further satisfies the following requirement (4).
(4) The average length (RSm) of the roughness curve elements of all straight portions is more than 10 μm and less than 300 μm [6].
In the heat-dissipating component according to any one of the above [1] to [5],
The metal member is a heat-dissipating component composed of at least one member selected from the group consisting of an aluminum member, an aluminum alloy member, a copper member, and a copper alloy member.
[7]
In the heat-dissipating component according to any one of the above [1] to [6],
A heat-dissipating component in which a resin member is not joined to the metal member.
[8]
In the heat-dissipating component according to any one of the above [1] to [7],
A heat-dissipating component in which a resin member is joined to the metal member.
[9]
In the heat-dissipating component according to any one of the above [1] to [8],
Heat dissipation component that is a heat dissipation housing, heat sink or heat exchanger.
本発明によれば、放熱特性に優れた放熱部品を提供することができる。 According to the present invention, it is possible to provide a heat radiating component having excellent heat radiating characteristics.
以下に、本発明の実施形態について、図面を用いて説明する。なお、文中の数字の間にある「〜」は特に断りがなければ、以上から以下を表す。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Unless otherwise specified, the "~" between the numbers in the sentence indicates the following from the above.
［放熱性部品］
以下、本実施形態に係る放熱性部品について説明する。
本実施形態に係る放熱性部品は金属部材からなり、上記金属部材の表面上の、平行関係にある任意の３直線部、および当該３直線部と直交する任意の３直線部からなる合計６直線部について、ＪＩＳ Ｂ０６０１：２００１（対応国際規格：ＩＳＯ４２８７）に準拠して測定される表面粗さが以下の要件（１）および（２）を同時に満たす。
（１）切断レベル２０％、評価長さ４ｍｍにおける粗さ曲線の負荷長さ率（Ｒｍｒ）が３０％以下である直線部を１直線部以上含む
（２）すべての直線部の、評価長さ４ｍｍにおける十点平均粗さ（Ｒｚｊｉｓ）が２μｍを超える
[Heat dissipation parts]
Hereinafter, the heat-dissipating parts according to the present embodiment will be described.
The heat-dissipating component according to the present embodiment is made of a metal member, and is composed of an arbitrary three straight line portions on the surface of the metal member which are in a parallel relationship and an arbitrary three straight line portions orthogonal to the three straight line portions, for a total of six straight lines. For the part, the surface roughness measured in accordance with JIS B0601: 2001 (corresponding international standard: ISO4287) simultaneously satisfies the following requirements (1) and (2).
(1) Includes one or more straight sections where the load length ratio (Rmr) of the roughness curve at a cutting level of 20% and an evaluation length of 4 mm is 30% or less (2) Evaluation lengths of all straight sections Ten-point average roughness (R zjis ) at 4 mm exceeds 2 μm
図１は、本実施形態に係る金属部材の表面上の、平行関係にある任意の３直線部、および当該３直線部と直交する任意の３直線部からなる合計６直線部を説明するための模式図である。
上記６直線部は、例えば、図１に示すような６直線部Ｂ１〜Ｂ６を選択することができる。まず、基準線として、金属部材の表面の中心部Ａを通る中心線Ｂ１を選択する。次いで、中心線Ｂ１と平行関係にある直線Ｂ２およびＢ３を選択する。次いで、中心線Ｂ１と直交する中心線Ｂ４を選択し、中心線Ｂ１と直交し、中心線Ｂ４と並行関係にある直線Ｂ５およびＢ６を選択する。ここで、各直線間の垂直距離Ｄ１〜Ｄ４は、例えば、２〜５ｍｍである。
FIG. 1 is for explaining a total of 6 straight lines including an arbitrary 3 straight lines in a parallel relationship and an arbitrary 3 straight lines orthogonal to the 3 straight lines on the surface of the metal member according to the present embodiment. It is a schematic diagram.
For the above 6 straight lines, for example, 6 straight lines B1 to B6 as shown in FIG. 1 can be selected. First, as the reference line, the center line B1 passing through the center portion A of the surface of the metal member is selected. Next, the straight lines B2 and B3 that are parallel to the center line B1 are selected. Next, the center line B4 orthogonal to the center line B1 is selected, and the straight lines B5 and B6 orthogonal to the center line B1 and parallel to the center line B4 are selected. Here, the vertical distances D1 to D4 between the straight lines are, for example, 2 to 5 mm.
上記要件（１）および（２）を同時に満たす金属部材からなる放熱性部品は放熱性に優れている。この理由は必ずしも明らかではないが、上記要件（１）および（２）を同時に満たす金属部材は表面の微細凹凸構造が複雑な形状になっており、熱を外部に拡散するための面積が広くなり、外部に熱を効果的に拡散できる構造になっているからだと考えられる。
本発明者らは、金属部材からなる放熱性部品の放熱性を向上させるために、金属部材の表面の十点平均粗さ（Ｒｚｊｉｓ）を調整することを検討した。
しかし、金属部材の表面の十点平均粗さ（Ｒｚｊｉｓ）を単に調整するだけでは金属部材の放熱性を十分に向上させることができないことが明らかとなった。
ここで、本発明者らは、負荷長さ率という尺度が金属部材表面の凹凸形状の鋭利性を表す指標として有効であると考えた。負荷長さ率が小さい場合は、金属部材表面の凹凸形状の鋭利性が大きいことを意味し、負荷長さ率が大きい場合は、金属部材表面の凹凸形状の鋭利性が小さいことを意味する。
そこで、本発明者らは、金属部材からなる放熱性部品の放熱性を向上させるための設計指針として、金属部材表面の粗さ曲線の負荷長さ率という尺度に注目し、さらに鋭意検討を重ねた。その結果、金属部材表面の負荷長さ率を特定値以下に調整することにより、熱を外部に拡散するための面積が広くなり、その結果、放熱特性に優れた放熱性部品を実現できることを見出して本発明を完成するに至った。
A heat-dissipating component made of a metal member that simultaneously satisfies the above requirements (1) and (2) has excellent heat-dissipating properties. The reason for this is not always clear, but the metal member that simultaneously satisfies the above requirements (1) and (2) has a complicated surface fine uneven structure, and the area for diffusing heat to the outside becomes large. It is thought that this is because it has a structure that can effectively diffuse heat to the outside.
The present inventors have studied to adjust the ten-point average roughness (R zjis ) of the surface of the metal member in order to improve the heat dissipation of the heat-dissipating component made of the metal member.
However, it has become clear that the heat dissipation of the metal member cannot be sufficiently improved by simply adjusting the ten-point average roughness (R zjis ) of the surface of the metal member.
Here, the present inventors considered that the scale of load length ratio is effective as an index showing the sharpness of the uneven shape of the surface of the metal member. When the load length ratio is small, it means that the sharpness of the uneven shape on the surface of the metal member is large, and when the load length ratio is large, it means that the sharpness of the uneven shape on the surface of the metal member is small.
Therefore, the present inventors have paid attention to the scale of the load length ratio of the roughness curve of the surface of the metal member as a design guideline for improving the heat dissipation of the heat-dissipating component made of the metal member, and repeated diligent studies. It was. As a result, it was found that by adjusting the load length ratio on the surface of the metal member to a specific value or less, the area for diffusing heat to the outside becomes wider, and as a result, a heat-dissipating component having excellent heat-dissipating characteristics can be realized. This has led to the completion of the present invention.
本実施形態に係る放熱性部品の放熱特性をより一層向上させる観点から、金属部材の表面上の、平行関係にある任意の３直線部、および当該３直線部と直交する任意の３直線部からなる合計６直線部について、ＪＩＳ Ｂ０６０１：２００１（対応国際規格：ＩＳＯ４２８７）に準拠して測定される表面粗さが以下の要件（１Ａ）〜（１Ｃ）のうち１つ以上の要件をさらに満たすことが好ましく、要件（１Ｃ）を満たすことがとりわけ好ましい。なお、要件（１Ｃ）は上述した要件（３）に同一である。
（１Ａ）切断レベル２０％、評価長さ４ｍｍにおける粗さ曲線の負荷長さ率（Ｒｍｒ）が３０％以下である直線部を好ましくは２直線部以上、より好ましくは３直線部以上、最も好ましくは６直線部含む
（１Ｂ）切断レベル２０％、評価長さ４ｍｍにおける粗さ曲線の負荷長さ率（Ｒｍｒ）が２０％以下である直線部を好ましくは１直線部以上、より好ましくは２直線部以上、さらに好ましくは３直線部以上、最も好ましくは６直線部含む
（１Ｃ）切断レベル４０％、評価長さ４ｍｍにおける粗さ曲線の負荷長さ率（Ｒｍｒ）が６０％以下である直線部を好ましくは１直線部以上、より好ましくは２直線部以上、さらに好ましくは３直線部以上、最も好ましくは６直線部含む
From the viewpoint of further improving the heat dissipation characteristics of the heat-dissipating component according to the present embodiment, from any three straight lines that are parallel to each other on the surface of the metal member and any three straight lines that are orthogonal to the three straight lines. The surface roughness measured in accordance with JIS B0601: 2001 (corresponding international standard: ISO4287) for a total of 6 straight sections further satisfies one or more of the following requirements (1A) to (1C). Is preferable, and it is particularly preferable that the requirement (1C) is satisfied. The requirement (1C) is the same as the requirement (3) described above.
(1A) A straight portion having a cutting level of 20% and a load length ratio (Rmr) of a roughness curve of 30% or less at an evaluation length of 4 mm is preferably 2 straight portions or more, more preferably 3 straight portions or more, most preferably. (1B) A straight portion having a cutting level of 20% and a load length ratio (Rmr) of a roughness curve of 20% or less at an evaluation length of 4 mm is preferably 1 straight portion or more, more preferably 2 straight portions. A straight portion or more, more preferably 3 straight portions or more, most preferably 6 straight portions (1C) A straight portion having a cutting level of 40% and a roughness curve load length ratio (Rmr) of 60% or less at an evaluation length of 4 mm. Is preferably 1 straight portion or more, more preferably 2 straight portions or more, still more preferably 3 straight portions or more, and most preferably 6 straight portions or more.
また、本実施形態に係る放熱性部品の放熱特性をより一層向上させる観点から、金属部材の表面上の、ＪＩＳ Ｂ０６０１：２００１（対応国際規格：ＩＳＯ４２８７）に準拠して測定される切断レベル２０％、評価長さ４ｍｍにおける粗さ曲線の負荷長さ率（Ｒｍｒ）の平均値が好ましくは０．１％以上４０％以下であり、より好ましくは０．５％以上３０％以下であり、さらに好ましくは１％以上２０％以下であり、最も好ましくは２％以上１５％以下である。
なお、上記負荷長さ率（Ｒｍｒ）の平均値は、前述の任意の６直線部の負荷長さ率（Ｒｍｒ）を平均したものを採用することができる。
Further, from the viewpoint of further improving the heat dissipation characteristics of the heat-dissipating component according to the present embodiment, the cutting level of 20% measured in accordance with JIS B0601: 2001 (corresponding international standard: ISO4287) on the surface of the metal member. The average value of the load length ratio (Rmr) of the roughness curve at the evaluation length of 4 mm is preferably 0.1% or more and 40% or less, more preferably 0.5% or more and 30% or less, and further preferably. Is 1% or more and 20% or less, and most preferably 2% or more and 15% or less.
As the average value of the load length ratio (Rmr), the average value of the load length ratio (Rmr) of any of the six straight lines described above can be adopted.
本実施形態に係る金属部材の表面の各負荷長さ率（Ｒｍｒ）は、金属部材の表面に対する粗化処理の条件を適切に調節することにより制御することが可能である。
本実施形態においては、とくにエッチング剤の種類および濃度、粗化処理の温度および時間、エッチング処理のタイミング等が、上記各負荷長さ率（Ｒｍｒ）を制御するための因子として挙げられる。
Each load length ratio (Rmr) of the surface of the metal member according to the present embodiment can be controlled by appropriately adjusting the conditions of the roughening treatment for the surface of the metal member.
In the present embodiment, in particular, the type and concentration of the etching agent, the temperature and time of the roughening treatment, the timing of the etching treatment, and the like are mentioned as factors for controlling each load length ratio (Rmr).
本実施形態に係る放熱性部品の放熱特性をより一層向上させる観点から、金属部材の表面上の、平行関係にある任意の３直線部、および当該３直線部と直交する任意の３直線部からなる合計６直線部について、ＪＩＳ Ｂ０６０１：２００１（対応国際規格：ＩＳＯ４２８７）に準拠して測定される表面粗さが以下の要件（２Ａ）をさらに満たすことが好ましい。
（２Ａ）すべての直線部の、評価長さ４ｍｍにおける十点平均粗さ（Ｒｚｊｉｓ）が好ましくは５μｍ超、より好ましくは１０μｍ以上、さらに好ましくは１５μｍ以上である
From the viewpoint of further improving the heat dissipation characteristics of the heat-dissipating component according to the present embodiment, from any three straight lines that are parallel to each other on the surface of the metal member and any three straight lines that are orthogonal to the three straight lines. It is preferable that the surface roughness measured in accordance with JIS B0601: 2001 (corresponding international standard: ISO4287) further satisfies the following requirement (2A) for the total of 6 straight portions.
(2A) The ten-point average roughness (R zjis ) of all straight portions at an evaluation length of 4 mm is preferably more than 5 μm, more preferably 10 μm or more, still more preferably 15 μm or more.
本実施形態に係る放熱性部品の放熱特性をより一層向上させる観点から、金属部材の表面上の、十点平均粗さ（Ｒｚｊｉｓ）の平均値が好ましくは２μｍを超えて５０μｍ以下、より好ましくは５μｍを超えて４５μｍ以下、さらに好ましくは１０μｍ以上４０μｍ以下、特に好ましくは１５μｍ以上３０μｍ以下である。
なお、上記十点平均粗さ（Ｒｚｊｉｓ）の平均値は、前述の任意の６直線部の十点平均粗さ（Ｒｚｊｉｓ）を平均したものを採用することができる。
From the viewpoint of further improving the heat dissipation characteristics of the heat-dissipating component according to the present embodiment, the average value of the ten-point average roughness ( Rzjis ) on the surface of the metal member is preferably more than 2 μm and 50 μm or less, more preferably. Is more than 5 μm and 45 μm or less, more preferably 10 μm or more and 40 μm or less, and particularly preferably 15 μm or more and 30 μm or less.
Incidentally, the ten-point average roughness average of (R zjis) can employ those ten-point average roughness of any 6 linear portion above the (R zjis) were averaged.
本実施形態に係る放熱性部品の放熱特性をより一層向上させる観点から、金属部材の表面上の、平行関係にある任意の３直線部、および当該３直線部と直交する任意の３直線部からなる合計６直線部について、ＪＩＳ Ｂ０６０１：２００１（対応国際規格：ＩＳＯ４２８７）に準拠して測定される表面粗さが以下の要件（４）をさらに満たすことが好ましい。
（４）すべての直線部の、粗さ曲線要素の平均長さ（ＲＳｍ）が１０μｍを超え３００μｍ未満であり、より好ましくは２０μｍ以上２００μｍ以下である。
From the viewpoint of further improving the heat dissipation characteristics of the heat-dissipating component according to the present embodiment, from any three straight lines that are parallel to each other on the surface of the metal member and any three straight lines that are orthogonal to the three straight lines. It is preferable that the surface roughness measured in accordance with JIS B0601: 2001 (corresponding international standard: ISO4287) further satisfies the following requirement (4) for the total of 6 straight portions.
(4) The average length (RSm) of the roughness curve elements of all the straight portions is more than 10 μm and less than 300 μm, more preferably 20 μm or more and 200 μm or less.
本実施形態に係る放熱性部品の放熱特性をより一層向上させる観点から、金属部材の表面上の、粗さ曲線要素の平均長さ（ＲＳｍ）の平均値が好ましくは１０μｍを超え３００μｍ未満、より好ましくは２０μｍ以上２００μｍ以下である。
なお、上記粗さ曲線要素の平均長さ（ＲＳｍ）の平均値は、前述の任意の６直線部のＲＳｍを平均したものを採用することができる。
From the viewpoint of further improving the heat dissipation characteristics of the heat-dissipating component according to the present embodiment, the average value of the average length (RSm) of the roughness curve elements on the surface of the metal member is preferably more than 10 μm and less than 300 μm. It is preferably 20 μm or more and 200 μm or less.
As the average value of the average length (RSm) of the roughness curve elements, the average value of the RSm of any of the six straight lines described above can be adopted.
本実施形態に係る金属部材の表面の十点平均粗さ（Ｒｚｊｉｓ）および粗さ曲線要素の平均長さ（ＲＳｍ）は、金属部材の表面に対する粗化処理の条件を適切に調節することにより制御することが可能である。
本実施形態においては、とくに粗化処理の温度および時間、エッチング量等が、上記十点平均粗さ（Ｒｚｊｉｓ）および粗さ曲線要素の平均長さ（ＲＳｍ）を制御するための因子として挙げられる。
The ten-point average roughness (R zjis ) and the average length (RSm) of the roughness curve element of the surface of the metal member according to the present embodiment are determined by appropriately adjusting the conditions of the roughening treatment for the surface of the metal member. It is possible to control.
In the present embodiment, in particular, the temperature and time of the roughening treatment, the amount of etching, etc. are cited as factors for controlling the ten-point average roughness (R zjis ) and the average length (RSm) of the roughness curve elements. Be done.
本実施形態に係る放熱性部品の放熱特性をより一層向上させる観点から、本実施形態に係る金属部材は伝熱性に優れることが好ましい。このような視点から、本実施形態に係る金属部材を構成する金属種としては、アルミニウム系金属または銅系金属が用いられ、具体的には、本実施形態に係る金属部材はアルミニウム製部材、アルミニウム合金製部材、銅製部材および銅合金製部材からなる群から選択される少なくとも一種の部材により構成されていることが好ましい。また本実施形態に係る金属部材の平均厚みは、伝熱性、強度および軽量性を総合的に勘案して、例えば０．５ｍｍ〜３０ｍｍ、好ましくは０．５ｍｍ〜２０ｍｍである。
アルミニウム合金としては、ＪＩＳ Ｈ４０００に規定された合金番号１０５０、１１００、２０１４、２０２４、３００３、５０５２、７０７５等が好ましく用いられる。
From the viewpoint of further improving the heat dissipation characteristics of the heat-dissipating component according to the present embodiment, it is preferable that the metal member according to the present embodiment has excellent heat transfer properties. From this point of view, an aluminum-based metal or a copper-based metal is used as the metal type constituting the metal member according to the present embodiment. Specifically, the metal member according to the present embodiment is an aluminum member or aluminum. It is preferably composed of at least one member selected from the group consisting of an alloy member, a copper member and a copper alloy member. The average thickness of the metal member according to the present embodiment is, for example, 0.5 mm to 30 mm, preferably 0.5 mm to 20 mm, in consideration of heat transfer, strength and lightness.
As the aluminum alloy, alloy numbers 1050, 1100, 2014, 2024, 3003, 5052, 7075 and the like specified in JIS H4000 are preferably used.
金属部材の形状は、放熱性部品の種類によって適宜選択されるため特に限定されない。
本実施形態に係る放熱性部品としては、例えば、放熱性筐体、ヒートシンク、熱交換器等が挙げられる。ヒートシンクはフィンを備えていてもよいし、フィンを備えていなくてもよい
The shape of the metal member is not particularly limited because it is appropriately selected depending on the type of heat-dissipating component.
Examples of the heat-dissipating component according to the present embodiment include a heat-dissipating housing, a heat sink, a heat exchanger, and the like. The heat sink may or may not have fins
本実施形態に係る金属部材は、金属材料を切断、プレス等による塑性加工、打ち抜き加工、切削、研磨、放電加工等の除肉加工によって上述した所定の形状に加工された後に、後述する粗化処理がなされたものが好ましい。要するに、種々の加工法により、必要な形状に加工されたものを用いることが好ましい。 The metal member according to the present embodiment is roughened after being processed into the above-mentioned predetermined shape by plastic working such as cutting, pressing, punching, cutting, polishing, electric discharge machining and the like. Those that have been treated are preferable. In short, it is preferable to use one processed into a required shape by various processing methods.
（金属部材表面の粗化処理方法）
次に、本実施形態に係る金属部材の表面の粗化処理方法について説明する。
本実施形態に係る金属部材の表面は、例えば、エッチング剤を用いて粗化処理することにより形成することができる。
ここで、エッチング剤を用いて金属部材の表面を粗化処理すること自体は従来技術においても行われてきた。しかし、本実施形態では、エッチング剤の種類および濃度、粗化処理の温度および時間、エッチング処理のタイミング、等の因子を高度に制御している。本実施形態に係る金属部材を得るためには、これらの因子を高度に制御することが重要となる。
以下、本実施形態に係る金属部材表面の粗化処理方法の一例を示す。ただし、本実施形態に係る金属部材表面の粗化処理方法は、以下の例に限定されない。
(Roughening treatment method for metal member surface)
Next, a method for roughening the surface of the metal member according to the present embodiment will be described.
The surface of the metal member according to the present embodiment can be formed, for example, by roughening with an etching agent.
Here, roughening the surface of a metal member using an etching agent has also been performed in the prior art. However, in this embodiment, factors such as the type and concentration of the etching agent, the temperature and time of the roughening treatment, the timing of the etching treatment, and the like are highly controlled. In order to obtain the metal member according to the present embodiment, it is important to highly control these factors.
Hereinafter, an example of a method for roughening the surface of a metal member according to the present embodiment will be shown. However, the method for roughening the surface of the metal member according to the present embodiment is not limited to the following examples.
（１）前処理工程
まず、金属部材の表面に酸化膜や水酸化物等からなる厚い被膜がないことが望ましい。このような厚い被膜を除去するため、次のエッチング剤で処理する工程の前に、サンドブラスト加工、ショットブラスト加工、研削加工、バレル加工等の機械研磨や、化学研磨により表面層を研磨してもよい。また、金属部材の表面に機械油等の著しい汚染がある場合は、水酸化ナトリウム水溶液や水酸化カリウム水溶液等のアルカリ性水溶液による処理や、脱脂を行なうことが好ましい。
(1) Pretreatment step First, it is desirable that the surface of the metal member does not have a thick film made of an oxide film or a hydroxide. In order to remove such a thick film, even if the surface layer is polished by mechanical polishing such as sandblasting, shotblasting, grinding, barreling, or chemical polishing before the process of processing with the next etching agent. Good. When the surface of the metal member is significantly contaminated with machine oil or the like, it is preferable to perform treatment with an alkaline aqueous solution such as an aqueous solution of sodium hydroxide or an aqueous solution of potassium hydroxide or degreasing.
（２）表面粗化処理工程
本実施形態において金属部材の表面粗化処理方法としては、後述する酸系エッチング剤による処理を特定のタイミングで行うことが好ましい。具体的には、該酸系エッチング剤による処理を表面粗化処理工程の最終段階で行うことが好ましい。
(2) Surface Roughening Treatment Step In the present embodiment, as the surface roughening treatment method for the metal member, it is preferable to perform the treatment with an acid-based etching agent described later at a specific timing. Specifically, it is preferable that the treatment with the acid-based etching agent is performed at the final stage of the surface roughness treatment step.
なお、特開２０１３−５２６７１号公報には、アルミニウムを含む金属材料からなる金属部材の表面粗化処理に用いるエッチング剤として、アルカリ系エッチング剤を用いる態様、アルカリ系エッチング剤と酸系エッチング剤を併用する態様、酸系エッチング剤で処理した後アルカリ系溶液で洗浄する態様が開示されている。
当該アルカリ系エッチング剤は、金属部材との反応が穏やかなため、作業性の観点からは好ましく用いられる。しかし、本発明者らの検討によれば、このようなアルカリ系エッチング剤は反応性が穏やかであるため、金属部材表面の粗化処理の度合いが弱く、深い凹凸形状を形成するのが困難であることが明らかになった。また、酸系エッチング剤処理を行った後アルカリ系エッチング剤やアルカリ系溶液を併用する場合には、酸系エッチング剤によって形成した深い凹凸形状を後のアルカリ系エッチング剤やアルカリ系溶液での処理により該凹凸形状を幾分か滑らかにしてしまうことが明らかになった。
よって、当該アルカリ系エッチング剤を用いて処理した金属部材や、エッチング処理の最終工程でアルカリ系エッチング剤やアルカリ系溶液を使用して得られた金属部材では、放熱特性を十分に向上させることは難しいと考えられる。
Japanese Patent Application Laid-Open No. 2013-52671 describes an embodiment in which an alkaline etching agent is used as an etching agent used for surface roughening treatment of a metal member made of a metal material containing aluminum, an alkaline etching agent and an acid etching agent. A mode in which they are used in combination and a mode in which they are treated with an acid-based etching agent and then washed with an alkaline solution are disclosed.
Since the alkaline etching agent has a gentle reaction with the metal member, it is preferably used from the viewpoint of workability. However, according to the study by the present inventors, since such an alkaline etching agent has a mild reactivity, the degree of roughening treatment on the surface of the metal member is weak, and it is difficult to form a deep uneven shape. It became clear that there was. In addition, when an alkaline etching agent or an alkaline solution is used in combination after the acid-based etching agent treatment, the deep uneven shape formed by the acid-based etching agent is treated with the later alkaline-based etching agent or alkaline solution. It became clear that the uneven shape was somewhat smoothed.
Therefore, it is not possible to sufficiently improve the heat dissipation characteristics of a metal member treated with the alkaline etching agent or a metal member obtained by using the alkaline etching agent or the alkaline solution in the final step of the etching treatment. It is considered difficult.
上記酸系エッチング剤を用いて粗化処理する方法としては、浸漬、スプレー等による処理方法が挙げられる。処理温度は２０〜４０℃が好ましく、処理時間は５〜３５０秒程度が好ましく、金属部材表面をより均一に粗化できる観点から、２０〜３００秒がより好ましく、５０〜３００秒が特に好ましい。 Examples of the roughening treatment method using the acid-based etching agent include treatment methods such as dipping and spraying. The treatment temperature is preferably 20 to 40 ° C., the treatment time is preferably about 5 to 350 seconds, and from the viewpoint of being able to roughen the surface of the metal member more uniformly, 20 to 300 seconds is more preferable, and 50 to 300 seconds is particularly preferable.
上記酸系エッチング剤を用いた粗化処理によって、金属部材の表面が凹凸形状に粗化される。上記酸系エッチング剤を用いた際の金属部材の深さ方向のエッチング量（溶解量）は、溶解した金属部材の質量、比重および表面積から算出した場合、０．１〜５００μｍであることが好ましく、５〜５００μｍであることがより好ましく、５〜１００μｍであることが更に好ましい。エッチング量が上記下限値以上であれば、本実施形態に係る放熱性部品の放熱特性をより一層向上させることができる。また、エッチング量が上記上限値以下であれば、処理コストの低減が可能となる。エッチング量は、処理温度や処理時間等により調整できる。 By the roughening treatment using the acid-based etching agent, the surface of the metal member is roughened into an uneven shape. The etching amount (dissolved amount) in the depth direction of the metal member when the acid-based etching agent is used is preferably 0.1 to 500 μm when calculated from the mass, specific gravity and surface area of the melted metal member. , 5 to 500 μm, more preferably 5 to 100 μm. When the etching amount is at least the above lower limit value, the heat dissipation characteristics of the heat dissipation component according to the present embodiment can be further improved. Further, if the etching amount is not more than the above upper limit value, the processing cost can be reduced. The etching amount can be adjusted by adjusting the processing temperature, processing time, and the like.
なお、本実施形態では、上記酸系エッチング剤を用いて金属部材を粗化処理する際、金属部材表面の全面を粗化処理してもよく、部分的に粗化処理してもよい。本実施形態に係る放熱性部品の放熱特性をより一層向上させる観点から、金属部材表面の全面を粗化処理することが好ましい。 In the present embodiment, when the metal member is roughened using the acid-based etching agent, the entire surface of the metal member may be roughened or partially roughened. From the viewpoint of further improving the heat dissipation characteristics of the heat-dissipating component according to the present embodiment, it is preferable to roughen the entire surface of the metal member.
（３）後処理工程
本実施形態では、上記表面粗化処理工程の後、通常、水洗および乾燥を行うことが好ましい。水洗の方法については特に制限はないが浸漬または流水にて所定時間洗浄することが好ましい。
(3) Post-treatment step In the present embodiment, it is usually preferable to perform washing with water and drying after the surface roughness treatment step. The method of washing with water is not particularly limited, but it is preferable to wash with water for a predetermined time by immersion or running water.
さらに、後処理工程としては、上記酸系エッチング剤を用いた処理により生じたスマット等を除去するため、超音波洗浄を施すことが好ましい。超音波洗浄の条件は、生じたスマット等を除去することができる条件であれば特に限定されないが、用いる溶媒としては水が好ましく、また、処理時間としては、好ましくは１〜２０分間である。 Further, as a post-treatment step, it is preferable to perform ultrasonic cleaning in order to remove smut and the like generated by the treatment using the acid-based etching agent. The conditions for ultrasonic cleaning are not particularly limited as long as the generated smut or the like can be removed, but water is preferable as the solvent to be used, and the treatment time is preferably 1 to 20 minutes.
（酸系エッチング剤）
本実施形態において、金属部材表面の粗化処理に用いられるエッチング剤としては、後述する特定の酸系エッチング剤が好ましい。上記特定のエッチング剤で処理することにより、金属部材の表面に、複雑な形状の微細凹凸構造が形成され、その微細凹凸構造により熱を外部に拡散するための面積が広くなり、本実施形態に係る放熱性部品の放熱特性が向上するものと考えられる。
(Acid etching agent)
In the present embodiment, as the etching agent used for the roughening treatment of the surface of the metal member, a specific acid-based etching agent described later is preferable. By treating with the above-mentioned specific etching agent, a fine concavo-convex structure having a complicated shape is formed on the surface of the metal member, and the fine concavo-convex structure increases the area for diffusing heat to the outside. It is considered that the heat dissipation characteristics of the heat-dissipating component are improved.
以下、本実施形態で使用できる酸系エッチング剤の成分について説明する。 Hereinafter, the components of the acid-based etching agent that can be used in this embodiment will be described.
上記酸系エッチング剤は、第二鉄イオンおよび第二銅イオンの少なくとも一方と、酸と、を含み、必要に応じて、マンガンイオン、各種添加剤等を含むことができる。 The acid-based etching agent contains at least one of ferric ion and ferric ion and an acid, and may contain manganese ion, various additives and the like, if necessary.
・第二鉄イオン
上記第二鉄イオンは、金属部材を酸化する成分であり、第二鉄イオン源を配合することによって、酸系エッチング剤中に該第二鉄イオンを含有させることができる。上記第二鉄イオン源としては、硝酸第二鉄、硫酸第二鉄、塩化第二鉄等が挙げられる。上記第二鉄イオン源のうちでは、塩化第二鉄が溶解性に優れ、安価であるという点から好ましい。
-Ferric ion The ferric ion is a component that oxidizes a metal member, and by blending a ferric ion source, the ferric ion can be contained in an acid-based etching agent. Examples of the ferric ion source include ferric nitrate, ferric sulfate, ferric chloride and the like. Among the ferric ion sources, ferric chloride is preferable because it has excellent solubility and is inexpensive.
本実施形態において、酸系エッチング剤中の上記第二鉄イオンの含有量は、好ましくは０．０１〜２０質量％、より好ましくは０．１〜１２質量％、さらに好ましくは０．５〜７質量％、さらにより好ましくは１〜６質量％、特に好ましくは１〜５質量％である。上記第二鉄イオンの含有量が上記下限値以上であれば、金属部材の粗化速度（溶解速度）の低下を防ぐことができる。一方、上記第二鉄イオンの含有量が上記上限値以下であれば、粗化速度を適正に維持することができるため、放熱性部品の放熱特性向上により適した均一な粗化が可能になる。 In the present embodiment, the content of the ferric ion in the acid-based etching agent is preferably 0.01 to 20% by mass, more preferably 0.1 to 12% by mass, and further preferably 0.5 to 7. It is by mass%, more preferably 1 to 6% by mass, and particularly preferably 1 to 5% by mass. When the ferric ion content is at least the above lower limit value, it is possible to prevent a decrease in the roughening rate (dissolution rate) of the metal member. On the other hand, when the content of the ferric ion is not more than the above upper limit value, the roughening rate can be maintained appropriately, so that uniform roughening suitable for improving the heat dissipation characteristics of the heat-dissipating component becomes possible. ..
・第二銅イオン
上記第二銅イオンは金属部材を酸化する成分であり、第二銅イオン源を配合することによって、酸系エッチング剤中に該第二銅イオン含有させることができる。上記第二銅イオン源としては、硫酸第二銅、塩化第二銅、硝酸第二銅、水酸化第二銅等が挙げられる。上記第二銅イオン源のうちでは、硫酸第二銅、塩化第二銅が安価であるという点から好ましい。
-Second copper ion The second copper ion is a component that oxidizes a metal member, and the second copper ion can be contained in an acid-based etching agent by blending a second copper ion source. Examples of the cupric ion source include cupric sulfate, cupric chloride, cupric nitrate, cupric hydroxide and the like. Among the cupric ion sources, cupric sulfate and cupric chloride are preferable from the viewpoint of low cost.
本実施形態において、酸系エッチング剤中の上記第二銅イオンの含有量は、０．００１〜１０質量％であることが好ましく、より好ましくは０．０１〜７質量％、さらに好ましくは０．０５〜１質量％、さらにより好ましくは０．１〜０．８質量％、さらにより好ましくは０．１５〜０．７質量％、特に好ましくは０．１５〜０．４質量％である。上記第二銅イオンの含有量が上記下限値以上であれば、金属部材の粗化速度（溶解速度）の低下を防ぐことができる。一方、上記第二銅イオンの含有量が上記上限値以下であれば、粗化速度を適正に維持することができるため、放熱性部品の放熱特性向上により適した均一な粗化が可能になる。 In the present embodiment, the content of the cupric ion in the acid-based etching agent is preferably 0.001 to 10% by mass, more preferably 0.01 to 7% by mass, and further preferably 0. It is 05 to 1% by mass, still more preferably 0.1 to 0.8% by mass, still more preferably 0.15 to 0.7% by mass, and particularly preferably 0.15 to 0.4% by mass. When the content of the cupric ion is at least the above lower limit value, it is possible to prevent a decrease in the roughening rate (dissolution rate) of the metal member. On the other hand, when the content of the cupric ion is not more than the above upper limit value, the roughening rate can be maintained appropriately, so that uniform roughening suitable for improving the heat dissipation characteristics of the heat-dissipating component becomes possible. ..
上記酸系エッチング剤は、第二鉄イオンおよび第二銅イオンの一方のみを含むものであってもよく、両方を含むものであってもよいが、第二鉄イオンおよび第二銅イオンの両方を含むことが好ましい。酸系エッチング剤が第二鉄イオンおよび第二銅イオンの両方を含むことで、放熱性部品の放熱特性向上により適した良好な粗化形状が容易に得られる。 The acid-based etching agent may contain only one of ferric ion and ferric ion, or may contain both, but both ferric ion and ferric ion. Is preferably included. Since the acid-based etching agent contains both ferric ions and ferric ions, a good roughened shape suitable for improving the heat dissipation characteristics of the heat-dissipating component can be easily obtained.
上記酸系エッチング剤が、第二鉄イオンおよび第二銅イオンの両方を含む場合、第二鉄イオンおよび第二銅イオンのそれぞれの含有量が、上記範囲であることが好ましい。また、酸系エッチング剤中の第二鉄イオンと第二銅イオンの含有量の合計は、０．０１１〜２０質量％であることが好ましく、より好ましくは０．１〜１５質量％、さらに好ましくは０．５〜１０質量％、特に好ましくは１〜５質量％である。 When the acid-based etching agent contains both ferric ion and ferric ion, the content of each of the ferric ion and the ferric ion is preferably in the above range. The total content of ferric ions and ferric ions in the acid-based etching agent is preferably 0.011 to 20% by mass, more preferably 0.1 to 15% by mass, still more preferably. Is 0.5 to 10% by mass, particularly preferably 1 to 5% by mass.
・マンガンイオン
上記酸系エッチング剤には、金属部材表面をむらなく一様に粗化するために、マンガンイオンが含まれていてもよい。マンガンイオンは、マンガンイオン源を配合することによって、酸系エッチング剤中に該マンガンイオンを含有させることができる。上記マンガンイオン源としては、硫酸マンガン、塩化マンガン、酢酸マンガン、フッ化マンガン、硝酸マンガン等が挙げられる。上記マンガンイオン源のうちでは、硫酸マンガン、塩化マンガンが安価である等の点から好ましい。
-Manganese ion The acid-based etching agent may contain manganese ion in order to evenly and uniformly roughen the surface of the metal member. The manganese ion can be contained in the acid-based etching agent by blending the manganese ion source. Examples of the manganese ion source include manganese sulfate, manganese chloride, manganese acetate, manganese fluoride, manganese nitrate and the like. Among the manganese ion sources, manganese sulfate and manganese chloride are preferable because they are inexpensive.
本実施形態において、酸系エッチング剤中の上記マンガンイオンの含有量は、０〜１質量％であることが好ましく、より好ましくは０〜０．５質量％である。 In the present embodiment, the content of the manganese ion in the acid-based etching agent is preferably 0 to 1% by mass, more preferably 0 to 0.5% by mass.
・酸
上記酸は、第二鉄イオンおよび／または第二銅イオンにより酸化された金属を溶解させる成分である。上記酸としては、塩酸、臭化水素酸、硫酸、硝酸、リン酸、過塩素酸、スルファミン酸等の無機酸や、スルホン酸、カルボン酸等の有機酸が挙げられる。上記カルボン酸としては、ギ酸、酢酸、クエン酸、シュウ酸、リンゴ酸等が挙げられる。上記酸系エッチング剤には、これらの酸を一種または二種以上配合することができる。上記無機酸のうちでは、臭気がほとんどなく、安価である点から硫酸が好ましい。また、上記有機酸のうちでは、粗化形状の均一性の観点から、カルボン酸が好ましい。
-Acid The acid is a component that dissolves a metal oxidized by ferric ion and / or ferric ion. Examples of the acid include inorganic acids such as hydrochloric acid, hydrobromic acid, sulfuric acid, nitric acid, phosphoric acid, perchloric acid and sulfamic acid, and organic acids such as sulfonic acid and carboxylic acid. Examples of the carboxylic acid include formic acid, acetic acid, citric acid, oxalic acid, malic acid and the like. One or more of these acids can be blended in the acid-based etching agent. Among the above-mentioned inorganic acids, sulfuric acid is preferable because it has almost no odor and is inexpensive. Further, among the above organic acids, a carboxylic acid is preferable from the viewpoint of uniformity of the roughened shape.
本実施形態において、酸系エッチング剤中の上記酸の含有量は、０．１〜５０質量％であることが好ましく、０．５〜５０質量％であることがより好ましく、１〜５０質量％であることがさらに好ましく、１〜３０質量％であることがさらにより好ましく、１〜２５質量％であることがさらにより好ましく、２〜１８質量％であることがさらにより好ましい。上記酸の含有量が上記下限値以上であれば、金属の粗化速度（溶解速度）の低下を防止できる。一方、上記酸の含有量が上記上限値以下であれば、液温が低下した際の金属塩の結晶析出を防止できるため、作業性を向上できる。 In the present embodiment, the content of the acid in the acid-based etching agent is preferably 0.1 to 50% by mass, more preferably 0.5 to 50% by mass, and 1 to 50% by mass. It is even more preferably 1 to 30% by mass, even more preferably 1 to 25% by mass, and even more preferably 2 to 18% by mass. When the acid content is at least the above lower limit value, it is possible to prevent a decrease in the roughening rate (dissolution rate) of the metal. On the other hand, when the acid content is not more than the upper limit value, it is possible to prevent crystal precipitation of the metal salt when the liquid temperature is lowered, so that workability can be improved.
・他の成分
本実施形態において使用できる酸系エッチング剤には、指紋等の表面汚染物による粗化のむらを防ぐために界面活性剤を添加してもよく、必要に応じて他の添加剤を添加してもよい。他の添加剤としては、深い凹凸を形成するために添加されるハロゲン化物イオン源、例えば、塩化ナトリウム、塩化カリウム、臭化ナトリウム、臭化カリウム等を例示できる。あるいは、粗化処理速度を上げるために添加されるチオ硫酸イオン、チオ尿素等のチオ化合物や、より均一な粗化形状を得るために添加されるイミダゾール、トリアゾール、テトラゾール等のアゾール類や、粗化反応を制御するために添加されるｐＨ調整剤等も例示できる。これら他の成分を添加する場合、その合計含有量は、酸系エッチング剤中に０．０１〜１０質量％程度であることが好ましい。
-Other components A surfactant may be added to the acid-based etching agent that can be used in the present embodiment in order to prevent uneven roughening due to surface contaminants such as fingerprints, and other additives may be added as necessary. You may. Examples of other additives include halide ion sources added to form deep irregularities, such as sodium chloride, potassium chloride, sodium bromide, potassium bromide, and the like. Alternatively, thio compounds such as thiosulfate ion and thiourea added to increase the roughening treatment rate, azoles such as imidazole, triazole and tetrazole added to obtain a more uniform roughened shape, and crude Examples thereof include a pH adjuster added to control the chemical reaction. When these other components are added, the total content thereof is preferably about 0.01 to 10% by mass in the acid-based etching agent.
本実施形態の酸系エッチング剤は、上記の各成分をイオン交換水等に溶解させることにより容易に調製することができる。 The acid-based etching agent of the present embodiment can be easily prepared by dissolving each of the above components in ion-exchanged water or the like.
本実施形態に係る放熱性部品において、本実施形態に係る放熱性部品の放熱特性をより一層向上させる観点から、本実施形態に係る金属部材に樹脂部材が接合されていないことが好ましいが、金属部材に樹脂部材が接合されていてもよい。 In the heat-dissipating component according to the present embodiment, from the viewpoint of further improving the heat-dissipating characteristics of the heat-dissipating component according to the present embodiment, it is preferable that the resin member is not bonded to the metal member according to the present embodiment. A resin member may be joined to the member.
本実施形態に係る樹脂部材は、好ましくは熱可塑性樹脂組成物の成形体である。熱可塑性樹脂組成物は樹脂成分としての熱可塑性樹脂を含み、必要に応じて充填剤をさらに含んでもよい。
熱可塑性樹脂としては特に限定されないが、例えば、ポリオレフィン系樹脂、極性基含有ポリオレフィン系樹脂、ポリメタクリル酸メチル樹脂等のポリメタクリル系樹脂、ポリアクリル酸メチル樹脂等のポリアクリル系樹脂、ポリスチレン樹脂、ポリビニルアルコール−ポリ塩化ビニル共重合体樹脂、ポリビニルアセタール樹脂、ポリビニルブチラール樹脂、ポリビニルホルマール樹脂、ポリメチルペンテン樹脂、無水マレイン酸−スチレン共重合体樹脂、ポリカーボネート樹脂、ポリフェニレンエーテル樹脂、ポリエーテルエーテルケトン樹脂、ポリエーテルケトン樹脂等の芳香族ポリエーテルケトン、ポリエステル系樹脂、ポリアミド系樹脂、ポリアミドイミド樹脂、ポリイミド樹脂、ポリエーテルイミド樹脂、スチレン系エラストマー、ポリオレフィン系エラストマー、ポリウレタン系エラストマー、ポリエステル系エラストマー、ポリアミド系エラストマー、アイオノマー、アミノポリアクリルアミド樹脂、イソブチレン無水マレイン酸コポリマー、ＡＢＳ、ＡＣＳ、ＡＥＳ、ＡＳ、ＡＳＡ、ＭＢＳ、エチレン−塩化ビニルコポリマー、エチレン−酢酸ビニルコポリマー、エチレン−酢酸ビニル−塩化ビニルグラフトポリマー、エチレン−ビニルアルコールコポリマー、塩素化ポリ塩化ビニル樹脂、塩素化ポリエチレン樹脂、塩素化ポリプロピレン樹脂、カルボキシビニルポリマー、ケトン樹脂、非晶性コポリエステル樹脂、ノルボルネン樹脂、フッ素プラスチック、ポリテトラフルオロエチレン樹脂、フッ素化エチレンポリプロピレン樹脂、ＰＦＡ、ポリクロロフルオロエチレン樹脂、エチレンテトラフルオロエチレンコポリマー、ポリフッ化ビニリデン樹脂、ポリフッ化ビニル樹脂、ポリアリレート樹脂、熱可塑性ポリイミド樹脂、ポリ塩化ビニリデン樹脂、ポリ塩化ビニル樹脂、ポリ酢酸ビニル樹脂、ポリサルホン樹脂、ポリパラメチルスチレン樹脂、ポリアリルアミン樹脂、ポリビニルエーテル樹脂、ポリフェニレンオキシド樹脂、ポリフェニレンスルフィド（ＰＰＳ）樹脂、ポリメチルペンテン樹脂、オリゴエステルアクリレート、キシレン樹脂、マレイン酸樹脂、ポリヒドロキシブチレート樹脂、ポリスルホン樹脂、ポリ乳酸樹脂、ポリグルタミン酸樹脂、ポリカプロラクトン樹脂、ポリエーテルスルホン樹脂、ポリアクリロニトリル樹脂、スチレン−アクリロニトリル共重合体樹脂等が挙げられる。これらの熱可塑性樹脂は一種単独で使用してもよいし、二種以上組み合わせて使用してもよい。
The resin member according to the present embodiment is preferably a molded product of a thermoplastic resin composition. The thermoplastic resin composition contains a thermoplastic resin as a resin component, and may further contain a filler if necessary.
The thermoplastic resin is not particularly limited, and for example, a polyolefin resin, a polar group-containing polyolefin resin, a polymethacrylic resin such as polymethylmethacrylate resin, a polyacrylic resin such as methylpolyacrylate resin, and a polystyrene resin. Polyvinyl alcohol-polyvinyl chloride copolymer resin, polyvinyl acetal resin, polyvinyl butyral resin, polyvinyl formal resin, polymethylpentene resin, maleic anhydride-styrene copolymer resin, polycarbonate resin, polyphenylene ether resin, polyether ether ketone resin , Aromatic polyether ketones such as polyether ketone resins, polyester resins, polyamide resins, polyamideimide resins, polyimide resins, polyetherimide resins, styrene elastomers, polyolefin elastomers, polyurethane elastomers, polyester elastomers, polyamides Elastomers, ionomers, aminopolyacrylamide resins, maleic anhydride copolymers, ABS, ACS, AES, AS, ASA, MBS, ethylene-vinyl chloride copolymers, ethylene-vinyl acetate copolymers, ethylene-vinyl acetate-vinyl chloride graft polymers, Ethylene-vinyl alcohol copolymer, chlorinated polyvinyl chloride resin, chlorinated polyethylene resin, chlorinated polypropylene resin, carboxyvinyl polymer, ketone resin, amorphous copolyester resin, norbornene resin, fluoroplastic, polytetrafluoroethylene resin, fluorine Ethylene polypropylene resin, PFA, polychlorofluoroethylene resin, ethylene tetrafluoroethylene copolymer, polyvinylidene fluoride resin, vinyl fluoride resin, polyarylate resin, thermoplastic polyimide resin, vinylidene chloride resin, polyvinyl chloride resin, polyacetic acid Vinyl resin, polysulfone resin, polyparamethylstyrene resin, polyallylamine resin, polyvinyl ether resin, polyphenylene oxide resin, polyphenylene sulfide (PPS) resin, polymethylpentene resin, oligoester acrylate, xylene resin, maleic acid resin, polyhydroxybuty Examples thereof include rate resin, polysulfone resin, polylactic acid resin, polyglutamic acid resin, polycaprolactone resin, polyethersulfone resin, polyacrylonitrile resin, styrene-acrylonitrile copolymer resin and the like. These thermoplastic resins may be used alone or in combination of two or more.
これらの中でも、熱可塑性樹脂としては、ポリオレフィン系樹脂、ポリエステル系樹脂、ポリアミド系樹脂、フッ素系樹脂、ポリアリーレンエーテル系樹脂およびポリアリーレンスルフィド系樹脂から選択される一種または二種以上の熱可塑性樹脂が好適に用いられる。 Among these, as the thermoplastic resin, one or more kinds of thermoplastic resins selected from polyolefin resins, polyester resins, polyamide resins, fluorine resins, polyarylene ether resins and polyarylene sulfide resins. Is preferably used.
本実施形態に係る樹脂部材は、機械的特性の改良の視点や線膨張係数差の調整、熱伝導性の向上等の視点から任意成分と充填剤を併用できる。充填剤としては、例えば、ガラス繊維、炭素繊維、炭素粒子、粘土、タルク、シリカ、ミネラル、セルロース繊維からなる群から一種または二種以上を選ぶことができる。これらのうち、好ましくは、ガラス繊維、炭素繊維、タルク、ミネラルから選択される一種または二種以上である。また、アルミナ、フォルステライト、マイカ、窒化アルミナ、窒化ホウ素、酸化亜鉛、酸化マグネシウム等に代表される放熱性フィラーを用いることもできる。これらの充填剤の形状は特に限定されず、繊維状、粒子状、板状等どのような形状であってもよいが、金属部材表面に微細凹凸構造の凹部に侵入できる程度の大きさを含む充填剤を使用することが好ましい。
なお、本実施形態に係る樹脂部材が充填剤を含む場合、その含有量は、熱可塑性樹脂１００質量部に対して、好ましくは１質量部以上１００質量部以下であり、より好ましくは５質量部以上９０質量部以下であり、特に好ましくは１０質量部以上８０質量部以下である。
In the resin member according to the present embodiment, an arbitrary component and a filler can be used in combination from the viewpoint of improving mechanical properties, adjusting the difference in linear expansion coefficient, and improving thermal conductivity. As the filler, for example, one or more kinds can be selected from the group consisting of glass fiber, carbon fiber, carbon particle, clay, talc, silica, mineral and cellulose fiber. Of these, one or more selected from glass fiber, carbon fiber, talc, and minerals are preferable. Further, a heat-dissipating filler typified by alumina, forsterite, mica, alumina nitride, boron nitride, zinc oxide, magnesium oxide and the like can also be used. The shape of these fillers is not particularly limited and may be any shape such as fibrous, particulate, plate-like, etc., but includes a size capable of penetrating into the concave portion of the fine concavo-convex structure on the surface of the metal member. It is preferable to use a filler.
When the resin member according to the present embodiment contains a filler, the content thereof is preferably 1 part by mass or more and 100 parts by mass or less, and more preferably 5 parts by mass with respect to 100 parts by mass of the thermoplastic resin. It is 90 parts by mass or less, and particularly preferably 10 parts by mass or more and 80 parts by mass or less.
本実施形態に係る樹脂部材として、熱硬化性樹脂組成物を用いることも可能である。熱硬化性樹脂組成物とは、熱硬化性樹脂を含む樹脂組成物である。熱硬化性樹脂としては、例えば、フェノール樹脂、エポキシ樹脂、不飽和ポリエステル樹脂、ジアリルフタレート樹脂、メラミン樹脂、オキセタン樹脂、マレイミド樹脂、ユリア（尿素）樹脂、ポリウレタン樹脂、シリコーン樹脂、ベンゾオキサジン環を有する樹脂、シアネートエステル樹脂等が用いられる。これらは単独で使用してもよいし、２種以上組み合わせて使用してもよい。
これらの中でも、耐熱性、加工性、機械的特性、接着性および防錆性等の視点から、フェノール樹脂、エポキシ樹脂および不飽和ポリエステル樹脂からなる群より選択される１以上を含む熱硬化性樹脂組成物が好適に用いられる。熱硬化性樹脂組成物に占める熱硬化性樹脂の含有量は、樹脂組成物全体を１００質量部としたとき、好ましくは１５質量部以上６０質量部以下であり、より好ましくは２５質量部以上５０質量部以下である。なお残余成分は例えば充填剤であり、充填剤としては、例えば、前述した充填剤を用いることができる。
It is also possible to use a thermosetting resin composition as the resin member according to the present embodiment. The thermosetting resin composition is a resin composition containing a thermosetting resin. Examples of the thermosetting resin include phenol resin, epoxy resin, unsaturated polyester resin, diallyl phthalate resin, melamine resin, oxetane resin, maleimide resin, urea (urea) resin, polyurethane resin, silicone resin, and benzoxazine ring. Resins, cyanate ester resins and the like are used. These may be used alone or in combination of two or more.
Among these, a thermosetting resin containing one or more selected from the group consisting of phenol resin, epoxy resin and unsaturated polyester resin from the viewpoint of heat resistance, processability, mechanical properties, adhesiveness, rust prevention and the like. The composition is preferably used. The content of the thermosetting resin in the thermosetting resin composition is preferably 15 parts by mass or more and 60 parts by mass or less, and more preferably 25 parts by mass or more and 50 parts by mass, when the entire resin composition is 100 parts by mass. It is less than a part by mass. The residual component is, for example, a filler, and as the filler, for example, the above-mentioned filler can be used.
樹脂部材の成形方法としては公知の方法を制限なく使用でき、例えば射出成形、押出成形、加熱プレス成形、圧縮成形、トランスファーモールド成形、注型成形、レーザー溶着成形、反応射出成形（ＲＩＭ成形）、リム成形（ＬＩＭ成形）、溶射成形等を例示することができる。これらの中でも、樹脂部材の成形方法としては、生産性および品質安定性の視点から射出成形法が好ましい。 Known methods can be used without limitation as the molding method of the resin member, for example, injection molding, extrusion molding, heat press molding, compression molding, transfer molding, casting molding, laser welding molding, reaction injection molding (RIM molding), Examples include rim molding (LIM molding) and spray molding. Among these, the injection molding method is preferable as the molding method for the resin member from the viewpoint of productivity and quality stability.
以上、本発明の実施形態について述べたが、これらは本発明の例示であり、上記以外の様々な構成を採用することもできる。 Although the embodiments of the present invention have been described above, these are examples of the present invention, and various configurations other than the above can be adopted.
以下、本実施形態を、実施例・比較例を参照して詳細に説明する。なお、本実施形態は、これらの実施例の記載に何ら限定されるものではない。 Hereinafter, the present embodiment will be described in detail with reference to Examples and Comparative Examples. The present embodiment is not limited to the description of these examples.
［実施例１］
（表面処理）
ＪＩＳ Ｈ４１００に規定された合金番号６０６３のアルミニウム合金部材からなるヒートシンク（ＭＩＳＵＭＩ社製ＨＥＡＴ１−５０）を、塩化第二鉄を１５．６質量％と、塩化第二銅を０．４質量％と、硫酸マンガン（１水和物）を０．７質量％と、硫酸を８．２質量％とを含有する酸系エッチング水溶液（残部：イオン交換水、液温：３０℃）中に４０秒間浸漬し、揺動させることによってエッチングした。次いで、流水で超音波洗浄（水中、１分）を行い、乾燥させることにより表面処理済みのヒートシンクを得た。
[Example 1]
(surface treatment)
A heat sink (HEAT1-50 manufactured by MISUMI) made of an aluminum alloy member having an alloy number of 6063 specified in JIS H4100 contains 15.6% by mass of ferric chloride and 0.4% by mass of cupric chloride. Immersed in an acid-based etching aqueous solution (residue: ion-exchanged water, liquid temperature: 30 ° C.) containing 0.7% by mass of manganese sulfate (monohydrate) and 8.2% by mass of sulfuric acid for 40 seconds. Etched by rocking. Next, ultrasonic cleaning (underwater, 1 minute) was performed with running water, and the surface-treated heat sink was obtained by drying.
（粗さ曲線の負荷長さ率（Ｒｍｒ）、十点平均粗さ（Ｒｚｊｉｓ）および粗さ曲線要素の平均長さ（ＲＳｍ）の測定）
次いで、得られた表面処理済みのヒートシンクの表面粗さを、表面粗さ測定装置「サーフコム１４００Ｄ（東京精密社製）」を使用して測定し、６直線部について、切断レベル１０％、２０％、３０％、４０％、５０％、６０％、７０％および８０％における負荷長さ率（Ｒｍｒ）、十点平均粗さ（Ｒｚｊｉｓ）および粗さ曲線要素の平均長さ（ＲＳｍ）を求めた。このうち、切断レベル２０％におけるＲｍｒ（２０％）値、上記Ｒｍｒ（２０％）値が３０％以下となる直線部の本数、切断レベル４０％におけるＲｍｒ（４０％）値、上記Ｒｍｒ（４０％）値が６０％以下となる直線部の本数、６直線部のＲｚｊｉｓ値、粗さ曲線要素の平均長さ（ＲＳｍ）、エッチング処理前後のヒートシンクの質量比から求めたエッチング率を以下に示す。
(Measurement of load length ratio (Rmr) of roughness curve, ten-point average roughness (R zjis ) and average length (RSm) of roughness curve elements)
Next, the surface roughness of the obtained surface-treated heat sink was measured using the surface roughness measuring device "Surfcom 1400D (manufactured by Tokyo Precision Co., Ltd.)", and the cutting levels of the 6 straight portions were 10% and 20%. , 30%, 40%, 50%, 60%, 70% and 80%, and the load length ratio (Rmr), ten-point average roughness (R zjis ) and average length (RSm) of roughness curve elements are obtained. It was. Of these, the Rmr (20%) value at a cutting level of 20%, the number of straight lines where the Rmr (20%) value is 30% or less, the Rmr (40%) value at a cutting level of 40%, and the Rmr (40%). ) The etching rate obtained from the number of straight parts whose value is 60% or less, the Rzjis value of 6 straight parts, the average length (RSm) of the roughness curve elements, and the mass ratio of the heat sink before and after the etching process is shown below. ..
切断レベル２０％におけるＲｍｒ（２０％）値［％］：４９．６、２５．０、１０．４、３３．５、５．７、１６．７
Ｒｍｒ（２０％）値が３０％以下となる直線部の本数：４本
切断レベル４０％におけるＲｍｒ（４０％）値［％］：７５．４、６３．３、４２．１、６５．３、４７．６、５０．１
Ｒｍｒ（４０％）値が６０％以下となる直線部の本数：３本
６直線部のＲｚｊｉｓ値［μｍ］：１１．０、１２．２、１３．８、１１．７、１０．８、１１．３
粗さ曲線要素の平均長さ（ＲＳｍ）［μｍ］：７３．１、７４．２、８８．１、９３．０、９２．６、９９．１
エッチング率［質量％］：１．１
Rmr (20%) value [%] at a cutting level of 20%: 49.6, 25.0, 10.4, 33.5, 5.7, 16.7
Number of straight lines where the Rmr (20%) value is 30% or less: 4 Rmr (40%) value [%] at a cutting level of 40%: 75.4, 63.3, 42.1, 65.3, 47.6, 50.1
Number of straight parts with Rmr (40%) value of 60% or less: 3 6 R zjis value of straight parts [μm]: 11.0, 12.2, 13.8, 11.7, 10.8, 11.3
Average Length of Roughness Curve Elements (RSm) [μm]: 73.1, 74.2, 88.1, 93.0, 92.6, 99.1
Etching rate [mass%]: 1.1
なお、表面粗さ測定装置の測定条件は以下のとおりである。
・触針先端半径：５μｍ
・基準長さ：０．８ｍｍ
・評価長さ：４ｍｍ
・測定速度：０．０６ｍｍ／ｓｅｃ
測定は、金属部材の表面上の、平行関係にある任意の３直線部、および当該直線部と直交する任意の３直線部からなる合計６直線部についておこなった（図１参照）。
The measurement conditions of the surface roughness measuring device are as follows.
・ Radius of stylus tip: 5 μm
・ Standard length: 0.8 mm
・ Evaluation length: 4 mm
-Measurement speed: 0.06 mm / sec
The measurement was performed on a total of 6 straight portions on the surface of the metal member, which consist of any 3 straight portions in a parallel relationship and arbitrary 3 straight portions orthogonal to the straight portion (see FIG. 1).
（最高到達温度および熱抵抗の測定）
得られた表面処理済みのヒートシンクについて、放射温度分布測定および熱電対による温度計測をおこない、最高到達温度および熱抵抗値をそれぞれ求めた。
測定条件は以下のとおりである。
・試料熱源：セラミックヒーター
・加熱電圧：３０［Ｖ］
・計測時間：最高到達温度で飽和するまで
・試料設置環境、周辺温度：アクリルチャンバ―内に設置、２４．６［℃］
・黒体塗料の塗布：放射温度分布測定の反射による誤差低減のため、ヒートシンクの一部に黒体塗料の塗布をおこなった
・熱電対の設置場所：ヒートシンク表面の中央部分および裏面の中央部分の２か所に設置し、先端に熱伝導性グリスを塗布した。ヒートシンク裏面の熱電対は、ヒートシンク裏面に配置したセラミックヒーターと、ヒートシンクとの間に設置した。
(Measurement of maximum temperature reached and thermal resistance)
For the obtained surface-treated heat sink, the radiation temperature distribution was measured and the temperature was measured by a thermocouple to determine the maximum temperature reached and the thermal resistance value, respectively.
The measurement conditions are as follows.
・ Sample heat source: Ceramic heater ・ Heating voltage: 30 [V]
・ Measurement time: Until saturation at the maximum temperature reached ・ Sample installation environment, ambient temperature: Installed in acrylic chamber, 24.6 [℃]
・ Application of blackbody paint: Blackbody paint was applied to a part of the heat sink to reduce the error due to reflection of radiation temperature distribution measurement. ・ Thermocouple installation location: Central part of the heat sink surface and central part of the back surface It was installed in two places and the tip was coated with heat conductive grease. The thermocouple on the back surface of the heat sink was installed between the ceramic heater arranged on the back surface of the heat sink and the heat sink.
対象試料の温度を監視しながら電圧を印加し、測定システムの要求（約９０℃）以下でコントロールが可能な条件として３０Ｖを設定した。
次に、３０Ｖの際の電流値から電力と熱電対による温度差（表面と裏面の温度差）を計算し、電力と温度差の関係から、熱抵抗値（温度差／電力値）の算出をおこなった。
また、赤外線サーモグラフィーを用いて対象試料の最高到達温度を測定した。
その結果、赤外線サーモグラフイーを用いて観測した際の最高到達温度は７５．２℃、熱抵抗値は、０．０９［Ｋ／Ｗ］であった。
A voltage was applied while monitoring the temperature of the target sample, and 30 V was set as a condition that could be controlled below the requirement of the measurement system (about 90 ° C.).
Next, the temperature difference between the electric power and the thermocouple (temperature difference between the front surface and the back surface) is calculated from the current value at 30 V, and the thermal resistance value (temperature difference / electric power value) is calculated from the relationship between the electric power and the temperature difference. I did it.
In addition, the maximum temperature reached of the target sample was measured using infrared thermography.
As a result, the maximum temperature reached when observed using the infrared thermographie was 75.2 ° C., and the thermal resistance value was 0.09 [K / W].
［比較例１］
ＪＩＳ Ｈ４１００に規定された合金番号６０６３のアルミニウム合金部材からなるヒートシンク（ＭＩＳＵＭＩ社製ＨＥＡＴ１−５０）を表面処理せずにそのまま用いた以外は実施例１と同様にして最高到達温度および熱抵抗値をそれぞれ測定した。その結果、赤外線サーモグラフイーを用いて観測した際の最高到達温度は７９．４℃、熱抵抗値は０．３９Ｋ／Ｗであった。
[Comparative Example 1]
The maximum temperature reached and the thermal resistance value were set in the same manner as in Example 1 except that the heat sink (HEAT1-50 manufactured by MISUMI) made of an aluminum alloy member having alloy number 6063 specified in JIS H4100 was used as it was without surface treatment. Each was measured. As a result, the maximum temperature reached when observed using the infrared thermographie was 79.4 ° C., and the thermal resistance value was 0.39 K / W.
Claims (9)
前記金属部材の表面上の、平行関係にある任意の３直線部、および当該３直線部と直交する任意の３直線部からなる合計６直線部について、ＪＩＳ Ｂ０６０１：２００１（対応国際規格：ＩＳＯ４２８７）に準拠して測定される表面粗さが以下の要件（１）および（２）を同時に満たす放熱性部品。
（１）切断レベル２０％、評価長さ４ｍｍにおける粗さ曲線の負荷長さ率（Ｒｍｒ）が３０％以下である直線部を１直線部以上含む
（２）すべての直線部の、評価長さ４ｍｍにおける十点平均粗さ（Ｒｚｊｉｓ）が２μｍを超える A heat-dissipating component made of a metal member
JIS B0601: 2001 (corresponding international standard: ISO4287) for a total of 6 straight sections consisting of arbitrary 3 straight sections on the surface of the metal member that are in a parallel relationship and arbitrary 3 straight sections that are orthogonal to the 3 straight sections. A heat-dissipating component whose surface roughness measured in accordance with the above meets the following requirements (1) and (2) at the same time.
(1) Includes one or more straight sections where the load length ratio (Rmr) of the roughness curve at a cutting level of 20% and an evaluation length of 4 mm is 30% or less (2) Evaluation lengths of all straight sections Ten-point average roughness (R zjis ) at 4 mm exceeds 2 μm
前記金属部材の表面上の、平行関係にある任意の３直線部、および当該３直線部と直交する任意の３直線部からなる合計６直線部について、ＪＩＳ Ｂ０６０１：２００１（対応国際規格：ＩＳＯ４２８７）に準拠して測定される表面粗さが以下の要件（３）をさらに満たす放熱性部品。
（３）切断レベル４０％、評価長さ４ｍｍにおける粗さ曲線の負荷長さ率（Ｒｍｒ）が６０％以下である直線部を１直線部以上含む In the heat-dissipating component according to claim 1,
JIS B0601: 2001 (corresponding international standard: ISO4287) for a total of 6 straight sections consisting of arbitrary 3 straight sections on the surface of the metal member that are in a parallel relationship and arbitrary 3 straight sections that are orthogonal to the 3 straight sections. A heat-dissipating component whose surface roughness measured in accordance with the above further satisfies the following requirement (3).
(3) Includes one or more straight sections where the load length ratio (Rmr) of the roughness curve at a cutting level of 40% and an evaluation length of 4 mm is 60% or less.
前記金属部材の表面上の、平行関係にある任意の３直線部、および当該３直線部と直交する任意の３直線部からなる合計６直線部について、すべての直線部の前記十点平均粗さ（Ｒｚｊｉｓ）が５μｍを超える放熱性部品。 In the heat-dissipating component according to claim 1 or 2.
The ten-point average roughness of all straight portions of a total of six straight portions consisting of any three straight portions in parallel on the surface of the metal member and arbitrary three straight portions orthogonal to the three straight portions. A heat-dissipating component with (R zjis ) exceeding 5 μm.
前記金属部材の表面上の、平行関係にある任意の３直線部、および当該３直線部と直交する任意の３直線部からなる合計６直線部について、すべての直線部の前記十点平均粗さ（Ｒｚｊｉｓ）が１５μｍ以上である放熱性部品。 In the heat-dissipating component according to claim 3,
The ten-point average roughness of all straight portions of a total of six straight portions consisting of any three straight portions in parallel on the surface of the metal member and arbitrary three straight portions orthogonal to the three straight portions. A heat-dissipating component having (R zjis ) of 15 μm or more.
前記金属部材の表面上の、平行関係にある任意の３直線部、および当該３直線部と直交する任意の３直線部からなる合計６直線部について、ＪＩＳ Ｂ０６０１：２００１（対応国際規格：ＩＳＯ４２８７）に準拠して測定される表面粗さが以下の要件（４）をさらに満たす放熱性部品。
（４）すべての直線部の、粗さ曲線要素の平均長さ（ＲＳｍ）が１０μｍを超え３００μｍ未満である In the heat-dissipating component according to any one of claims 1 to 4.
JIS B0601: 2001 (corresponding international standard: ISO4287) for a total of 6 straight sections consisting of arbitrary 3 straight sections on the surface of the metal member that are in a parallel relationship and arbitrary 3 straight sections that are orthogonal to the 3 straight sections. A heat-dissipating component whose surface roughness measured in accordance with the above further satisfies the following requirement (4).
(4) The average length (RSm) of the roughness curve elements of all straight portions is more than 10 μm and less than 300 μm.
前記金属部材はアルミニウム製部材、アルミニウム合金製部材、銅製部材および銅合金製部材からなる群から選択される少なくとも一種の部材により構成されている放熱性部品。 In the heat-dissipating component according to any one of claims 1 to 5,
The metal member is a heat-dissipating component composed of at least one member selected from the group consisting of an aluminum member, an aluminum alloy member, a copper member, and a copper alloy member.
前記金属部材に樹脂部材が接合されていない放熱性部品。 In the heat-dissipating component according to any one of claims 1 to 6.
A heat-dissipating component in which a resin member is not joined to the metal member.
前記金属部材に樹脂部材が接合された放熱性部品。 In the heat-dissipating component according to any one of claims 1 to 7.
A heat-dissipating component in which a resin member is joined to the metal member.
放熱性筐体、ヒートシンクまたは熱交換器である放熱性部品。 In the heat-dissipating component according to any one of claims 1 to 8.
Heat dissipation component that is a heat dissipation housing, heat sink or heat exchanger.
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| JP2003060137A (en) * | 2001-08-08 | 2003-02-28 | Ibiden Co Ltd | Substrate for module |
| JP2006013420A (en) * | 2004-01-28 | 2006-01-12 | Kyocera Corp | Package for electronic component housing, and electronic device |
| JP2009088218A (en) * | 2007-09-28 | 2009-04-23 | Dowa Metaltech Kk | Semiconductor device |
| WO2015008847A1 (en) * | 2013-07-18 | 2015-01-22 | 三井化学株式会社 | Metal/resin composite structure and metal member |
| WO2018038159A1 (en) * | 2016-08-26 | 2018-03-01 | 三井化学株式会社 | Electronic device housing, method for manufacturing electronic device housing, development plan-shaped metal resin joint plate, and electronic apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003060137A (en) * | 2001-08-08 | 2003-02-28 | Ibiden Co Ltd | Substrate for module |
| JP2006013420A (en) * | 2004-01-28 | 2006-01-12 | Kyocera Corp | Package for electronic component housing, and electronic device |
| JP2009088218A (en) * | 2007-09-28 | 2009-04-23 | Dowa Metaltech Kk | Semiconductor device |
| WO2015008847A1 (en) * | 2013-07-18 | 2015-01-22 | 三井化学株式会社 | Metal/resin composite structure and metal member |
| WO2018038159A1 (en) * | 2016-08-26 | 2018-03-01 | 三井化学株式会社 | Electronic device housing, method for manufacturing electronic device housing, development plan-shaped metal resin joint plate, and electronic apparatus |
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