JPH03260046A - Shape memory alloy powder for thermal spraying - Google Patents
Shape memory alloy powder for thermal sprayingInfo
- Publication number
- JPH03260046A JPH03260046A JP6050290A JP6050290A JPH03260046A JP H03260046 A JPH03260046 A JP H03260046A JP 6050290 A JP6050290 A JP 6050290A JP 6050290 A JP6050290 A JP 6050290A JP H03260046 A JPH03260046 A JP H03260046A
- Authority
- JP
- Japan
- Prior art keywords
- shape memory
- powder
- thermal spraying
- memory alloy
- alloy
- 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
Links
- 239000000843 powder Substances 0.000 title claims abstract description 36
- 229910001285 shape-memory alloy Inorganic materials 0.000 title claims abstract description 21
- 238000007751 thermal spraying Methods 0.000 title claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 13
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 9
- 239000000956 alloy Substances 0.000 claims abstract description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical group [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 17
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 abstract description 10
- 238000000576 coating method Methods 0.000 abstract description 10
- 230000003647 oxidation Effects 0.000 abstract description 6
- 238000007254 oxidation reaction Methods 0.000 abstract description 6
- 229910004337 Ti-Ni Inorganic materials 0.000 abstract description 5
- 229910011209 Ti—Ni Inorganic materials 0.000 abstract description 5
- KHYBPSFKEHXSLX-UHFFFAOYSA-N iminotitanium Chemical compound [Ti]=N KHYBPSFKEHXSLX-UHFFFAOYSA-N 0.000 abstract description 5
- 238000007747 plating Methods 0.000 abstract description 5
- 239000000758 substrate Substances 0.000 abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052802 copper Inorganic materials 0.000 abstract description 3
- 239000010949 copper Substances 0.000 abstract description 3
- 238000007772 electroless plating Methods 0.000 abstract 1
- 238000005507 spraying Methods 0.000 description 7
- 239000007921 spray Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007750 plasma spraying Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、溶射用形状記憶合金粉末に関するものである
。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a shape memory alloy powder for thermal spraying.
［従来の技術］
従来、バルクの状態で形状記憶特性を有する金属の粉末
、例えばチタン・ニッケル合金の粉末等を溶射する場合
、チタンがたいへん活性化しやすい金属であるため、酸
化作用が激しく、特開昭６３−１４００７２号公報に開
示されているように、酸素分圧が１．３Ｘ１０−７Ｔｏ
ｒｒ （トール）以下の雰囲気下において溶射を行なう
必要があった。[Prior art] Conventionally, when spraying metal powder that has shape memory properties in bulk, such as titanium-nickel alloy powder, titanium is a metal that is very easily activated, so the oxidation effect is severe and As disclosed in JP-A-63-140072, when the oxygen partial pressure is 1.3X10-7To
Thermal spraying had to be carried out in an atmosphere below rr (Torr).
［発明が解決しようとする課題］
しかしながら、酸素分圧を制御した雰囲気下において溶
射を行なわなければいけないため、真空チャンバーなど
を付備した非常に大がかりな溶射設備が必要であり、そ
のため得られる溶射皮膜のコストを低く抑えることが困
難であるという問題点かあった。[Problem to be solved by the invention] However, since thermal spraying must be carried out in an atmosphere with controlled oxygen partial pressure, very large-scale thermal spraying equipment equipped with a vacuum chamber etc. is required. There was a problem in that it was difficult to keep the cost of the coating low.
本発明は、上述した問題点を解決するためになされたも
のであり、大気中で溶射の行える溶射用形状記憶合金粉
末を提供することを目的としている。The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a shape memory alloy powder for thermal spraying that can be thermally sprayed in the atmosphere.
［課題を解決するための手段］
この目的を達成するために本発明の溶射用形状記憶合金
粉末は、形状記憶特性を有する金属粉末の表面に酸化し
にくい金属若しくは合金をコーティングしである。[Means for Solving the Problems] In order to achieve this object, the shape memory alloy powder for thermal spraying of the present invention is obtained by coating the surface of a metal powder having shape memory characteristics with a metal or alloy that is difficult to oxidize.
又、前記金属若しくは合金は、ニッケル若しくはニッケ
ル合金であると効果的である。Further, it is effective that the metal or alloy is nickel or a nickel alloy.
［作用］
上記の構成を有する本発明においては、酸化しにくい金
属若しくは合金、特に二・ソケル若しくはニッケル合金
をその表面にコーティングした形状記憶合金粉末を大気
中においてプラズマ溶射を行なっても、表面コーティン
グされた形状記憶合金の粉末は、酸化が非常に低く抑え
られるため、その形状記憶特性は酸素分圧の低い雰囲気
下で溶射したものに比較してもほとんど劣らない。[Function] In the present invention having the above configuration, even if the shape memory alloy powder whose surface is coated with a metal or alloy that is difficult to oxidize, particularly Ni-Sokel or nickel alloy, is plasma sprayed in the atmosphere, the surface coating will not occur. Since the oxidation of the shape memory alloy powder is suppressed to a very low level, its shape memory properties are almost as good as those sprayed in an atmosphere with a low oxygen partial pressure.
［実施例］
以下、本発明を具体化した一実施例を図面を参照して説
明する。[Example] Hereinafter, an example embodying the present invention will be described with reference to the drawings.
第１図は、本発明の断面の一例である。チタンニッケル
（以下Ｔｉ−Ｎｉと称す）形状記憶合金粉末ユの表面に
は、ニッケル（以下Ｎｉと称す）メツキ層２がＴｉ−Ｎ
ｉ形状記憶合金粉末に対し５重量％程度、無電解Ｎｉメ
・ツキされている。またＮｉメツキされたものの粒径は
５〜１０５μｍ（マイクロ・メートル）、好ましくは１
０〜７４μｍ程度である。上記のように構成された溶射
粉末を第２図に示すように銅製の基板３にプラズマ溶射
ガン５によりプラズマ溶射し、所望の厚さ、形状の溶射
皮膜４が形成されたところでプラズマ溶射が中止される
。このプラズマ溶射カン５の上部には、プラズマ溶射ガ
ンに溶射粉末を供給する粉末供給装置６が設けられてい
る。FIG. 1 is an example of a cross section of the present invention. A nickel (hereinafter referred to as Ni) plating layer 2 is formed on the surface of the titanium nickel (hereinafter referred to as Ti-Ni) shape memory alloy powder.
The shape memory alloy powder is coated with electroless Ni in an amount of about 5% by weight. The particle size of Ni-plated particles is 5 to 105 μm (micrometers), preferably 1
It is about 0 to 74 μm. The spray powder configured as described above is plasma sprayed onto a copper substrate 3 using a plasma spray gun 5 as shown in FIG. 2, and the plasma spraying is stopped when a sprayed coating 4 of the desired thickness and shape is formed. be done. A powder supply device 6 is provided above the plasma spray can 5 to supply spray powder to the plasma spray gun.
プラズマ溶射によって溶射皮膜４が形成された銅製の基
盤３は、酸（硝酸）処理による溶解徐去若しくは機械加
工による切削除去か行なわれ、所望する形状のＴｉ−Ｎ
ｉ形状記憶合金か得られる。The copper substrate 3 on which the sprayed coating 4 is formed by plasma spraying is treated with acid (nitric acid) to remove it by dissolution or by machining to remove it.
A shape memory alloy is obtained.
このように無電解Ｎｉメツキを施したＴｉ−Ｎｉ形状記
憶合金粉末を用いて得られた溶射皮膜４は、無電解Ｎｉ
メツキを施していないＴｉ−Ｎｉ形状記憶合金を大気中
で溶射して得られる溶射皮膜に比べ、酸化することなく
、そのため酸化による形状記憶特性の劣化はなく酸素分
圧を制御した雰囲気下で溶射したＴｉ−Ｎｉ形状記憶合
金皮膜と大差の無い形状記憶特性を示した。The thermal spray coating 4 obtained using the Ti-Ni shape memory alloy powder subjected to electroless Ni plating in this way is coated with electroless Ni.
Compared to a sprayed coating obtained by spraying an unplated Ti-Ni shape memory alloy in the atmosphere, it does not oxidize, and therefore the shape memory properties do not deteriorate due to oxidation, and the coating is sprayed in an atmosphere where the oxygen partial pressure is controlled. It exhibited shape memory properties that were not significantly different from those of the Ti-Ni shape memory alloy film.
次に、変態温度がＴＡ’Ｃ＜ＴＢ℃＜ＴＣ’Ｃと異なる
Ａ、Ｂ、Ｃの三種類の形状記憶合金粉末を用い、それぞ
れに無電解ニッケルメッキを施した後、それらをプラズ
マ溶射して第３図に示すような短冊状の溶射皮膜７を得
た。短冊状の溶射皮膜７は、第４図（ａ）に示すように
Ａ、 Ｂ、 Ｃの粉末を混合して溶射したもの、第４
図（ｂ）に示すようにＡ、Ｂ、Ｃの粉末を徐々に積層す
るように溶射したものの二種類の粉末の供給方法によっ
て作成される。Next, three types of shape memory alloy powders A, B, and C with different transformation temperatures as TA'C < TB°C <TC'C were used, and after electroless nickel plating was applied to each, they were plasma sprayed. Thus, a strip-shaped thermal spray coating 7 as shown in FIG. 3 was obtained. The strip-shaped thermal spray coating 7 is obtained by spraying a mixture of powders A, B, and C, as shown in FIG. 4(a).
As shown in Figure (b), powders A, B, and C are thermally sprayed in such a way that they are gradually layered, and are prepared using two types of powder supply methods.
上述した方法で作成された短冊状の溶射皮膜７を、第５
図（ａ）に示すように、温度Ｔ’Ｃ（Ｔ＜ＴＡ）におい
て変形しておくと温度Ｔ℃が′ＦＡ＜Ｔ＜Ｔｎ、Ｔｓ＜
Ｔ＜Ｔｃ、Ｔ（、＜Ｔと変化したときに溶射皮膜７は第
５図（ｂ）から第５図（ｄ）に示すように徐々に形状を
変化させる。普通、形状記憶合金は変態温度を一つしか
持たず、その温度に達するとすばやく変形してしまうの
に対し、このような方法で作成したものは、変態温度の
幅を任意に設定することができる。The strip-shaped thermal sprayed coating 7 created by the method described above was
As shown in Figure (a), if deformed at temperature T'C (T<TA), temperature T°C becomes 'FA<T<Tn, Ts<
When T<Tc, T(, <T), the sprayed coating 7 gradually changes its shape as shown in FIG. 5(b) to FIG. 5(d).Usually, shape memory alloys In contrast, materials created using this method can have an arbitrary range of transformation temperatures, whereas materials that have only one transformation temperature can be quickly deformed once that temperature is reached.
本発明は以上詳述した実施例に限定されることなく、そ
の趣旨を逸脱しない範囲において種々の変更を加えるこ
とができる。The present invention is not limited to the embodiments detailed above, and various changes can be made without departing from the spirit thereof.
例えば、本実施例では形状記憶合金粉末にＮｉメツキを
施したが、他の酸化しにくい金属若しくは合金でもよい
。For example, in this example, the shape memory alloy powder was plated with Ni, but other metals or alloys that are difficult to oxidize may be used.
［発明の効果］
以上詳述したことから明らかなように、本発明によれば
、形状記憶特性を有する金属粉末の表面に酸化しにくい
金属若しくは合金、特にニッケル若しくはニッケル合金
をコーティングしたので、大気中でも酸化することなく
溶射のできる溶射用形状記憶合金粉末を提供することが
できるという産業主著しい効果を奏する。[Effects of the Invention] As is clear from the detailed description above, according to the present invention, the surface of the metal powder having shape memory characteristics is coated with a metal or alloy that is difficult to oxidize, particularly nickel or a nickel alloy, so that it is not exposed to the atmosphere. Among them, it is possible to provide a shape memory alloy powder for thermal spraying that can be thermally sprayed without oxidation, which is a remarkable effect for the industry.
第１図から第５図までは本発明を具体化した実施例を示
すもので、第１図は本発明の粉末の断面図、第２図はプ
ラズマ溶射の図、第３図は本発明の粉末を使用し、溶射
することによって得た短冊状試験片の斜視図、第４図（
ａ）と第４図（ｂ）は試験片の断面図、第５図は試験片
の温度による形状変化の例を示した図である。
図中、ｌはチタン−ニッケル形状記憶合金粉末、２はニ
ッケルメッキ層、３は基板、４は溶射皮膜、５はプラズ
マ溶射ガン、６は粉末供給装置である。Figures 1 to 5 show examples embodying the present invention. Figure 1 is a cross-sectional view of the powder of the present invention, Figure 2 is a diagram of plasma spraying, and Figure 3 is a diagram of the powder of the present invention. Figure 4 is a perspective view of a strip-shaped test piece obtained by thermal spraying using powder.
a) and FIG. 4(b) are cross-sectional views of the test piece, and FIG. 5 is a diagram showing an example of the change in shape of the test piece due to temperature. In the figure, 1 is a titanium-nickel shape memory alloy powder, 2 is a nickel plating layer, 3 is a substrate, 4 is a thermal spray coating, 5 is a plasma spray gun, and 6 is a powder supply device.
Claims (2)
くい金属若しくは合金をコーティングしたことを特徴と
する溶射用形状記憶合金粉末。1. A shape memory alloy powder for thermal spraying, characterized in that the surface of a metal powder having shape memory characteristics is coated with a metal or alloy that is difficult to oxidize.
ル合金であることを特徴とする請求項１に記載の溶射用
形状記憶合金粉末。2. The shape memory alloy powder for thermal spraying according to claim 1, wherein the metal or alloy is nickel or a nickel alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6050290A JPH03260046A (en) | 1990-03-12 | 1990-03-12 | Shape memory alloy powder for thermal spraying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6050290A JPH03260046A (en) | 1990-03-12 | 1990-03-12 | Shape memory alloy powder for thermal spraying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03260046A true JPH03260046A (en) | 1991-11-20 |
Family
ID=13144150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6050290A Pending JPH03260046A (en) | 1990-03-12 | 1990-03-12 | Shape memory alloy powder for thermal spraying |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03260046A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10208868A1 (en) * | 2002-03-01 | 2003-09-18 | Mtu Aero Engines Gmbh | Vibration damping component and/or its coating is produced by plasma spraying or rapid solidification processing deposition of a metal alloy or intermetallic compound |
| JP2010285641A (en) * | 2009-06-10 | 2010-12-24 | Nishimura Tekkosho:Kk | Thermal spraying material, structure having thermal sprayed layer and rotary disk type drier apparatus |
| CN102400081A (en) * | 2011-10-25 | 2012-04-04 | 西安交通大学 | Method for preparing wear-resistant TiNi shape memory alloy coating by using argon arc welding |
-
1990
- 1990-03-12 JP JP6050290A patent/JPH03260046A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10208868A1 (en) * | 2002-03-01 | 2003-09-18 | Mtu Aero Engines Gmbh | Vibration damping component and/or its coating is produced by plasma spraying or rapid solidification processing deposition of a metal alloy or intermetallic compound |
| DE10208868B4 (en) * | 2002-03-01 | 2008-11-13 | Mtu Aero Engines Gmbh | Method for producing a component and / or a layer of a vibration-damping alloy or intermetallic compound and component produced by this method |
| JP2010285641A (en) * | 2009-06-10 | 2010-12-24 | Nishimura Tekkosho:Kk | Thermal spraying material, structure having thermal sprayed layer and rotary disk type drier apparatus |
| CN102400081A (en) * | 2011-10-25 | 2012-04-04 | 西安交通大学 | Method for preparing wear-resistant TiNi shape memory alloy coating by using argon arc welding |
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