JP2522125B2 - Method for joining ceramics and metal or ceramics - Google Patents

Method for joining ceramics and metal or ceramics

Info

Publication number
JP2522125B2
JP2522125B2 JP3157374A JP15737491A JP2522125B2 JP 2522125 B2 JP2522125 B2 JP 2522125B2 JP 3157374 A JP3157374 A JP 3157374A JP 15737491 A JP15737491 A JP 15737491A JP 2522125 B2 JP2522125 B2 JP 2522125B2
Authority
JP
Japan
Prior art keywords
ceramics
joining
chrome
metal
plate
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.)
Expired - Fee Related
Application number
JP3157374A
Other languages
Japanese (ja)
Other versions
JPH04357177A (en
Inventor
志朗 内田
伸昭 新矢
強 山本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Isuzu Motors Ltd
Original Assignee
Isuzu Motors Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Isuzu Motors Ltd filed Critical Isuzu Motors Ltd
Priority to JP3157374A priority Critical patent/JP2522125B2/en
Publication of JPH04357177A publication Critical patent/JPH04357177A/en
Application granted granted Critical
Publication of JP2522125B2 publication Critical patent/JP2522125B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Pressure Welding/Diffusion-Bonding (AREA)
  • Ceramic Products (AREA)

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、セラミックスと金属又
はセラミックスとセラミックスとを接合する方法に関す
るものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for joining ceramics and metal or ceramics and ceramics.

【0002】[0002]

【従来の技術】従来、セラミックス等の粉末成形体と金
属とを接合するには、先ず、セラミックスの表面をMo
−Mn法(テレフケン法)で金属化し、その後にニッケ
ル(Ni)鍍金を施し、必要に応じて応力緩衝のための
中間材を用い、銀(Ag)ろう等で金属にろう接してい
る。特開昭60−145972号公報には、セラミック
スと熱膨張係数が近似している銅、モリブテン板を緩衝
材として使用したセラミックスと金属の接合体が提案さ
れている。
2. Description of the Related Art Conventionally, in order to bond a powder compact such as ceramics to a metal, first, the surface of the ceramic is Mo.
It is metallized by the -Mn method (telefken method), then nickel (Ni) plating is applied, and if necessary, an intermediate material for buffering stress is used, and the metal is brazed with silver (Ag) solder or the like. Japanese Unexamined Patent Publication (Kokai) No. 60-145972 proposes a bonded body of ceramics and a metal, which uses a copper or molybdenum plate having a thermal expansion coefficient similar to that of the ceramics as a cushioning material.

【0003】 本出願人は、クローム鍍金を施したニッ
ケル板を用いてメタライズと同時に接合する発明につい
て、先に特許出願(特願平1−313223号)してい
る。これは、図5に示すように、予めクローム鍍金を施
したニッケル板2とニッケル等の延性金属5,5及びタ
ングステン等の低熱膨張金属6からなる緩衝材をセラミ
ックス1とステンレス7との間に介在させ、真空度10
−3〜10−5Torr程度の真空雰囲気中で加熱加圧
して接合する方法である。
The applicant of the present invention has previously filed a patent application (Japanese Patent Application No. 1-313223) for an invention in which a nickel plate plated with chrome is used for joining at the same time as metallization. As shown in FIG. 5, a buffer material composed of a nickel plate 2 which has been plated with chrome in advance, ductile metals 5 and 5 such as nickel, and a low thermal expansion metal 6 such as tungsten is provided between the ceramic 1 and the stainless steel 7. Intervene, vacuum 10
This is a method of joining by heating and pressurizing in a vacuum atmosphere of about −3 to 10 −5 Torr.

【0004】[0004]

【発明が解決しようとする課題】従来のセラミックスと
金属の接合方法では、セラミックスと金属をろう接する
前に、セラミックス表面の金属化及び鍍金工程が必要と
なるので作業能率が悪く、また、銀ろうを使用した場合
には、銀の融点が低いため接合体の耐熱性が低くなる。
前記先願の発明では、メタライズと接合を同時に行なう
ことができるが、クロ−ム鍍金でクロ−ムの膜厚を最適
に制御するのが難しい。本発明は、セラミックスと金属
又はセラミックス同士を高能率で接合でき、また、高接
合強度で接合できる方法を提供することを目的とするも
のである。
In the conventional method of joining ceramics and metal, metallization of the ceramics surface and plating process are required before brazing the ceramics and the metal, so that the working efficiency is poor, and the silver soldering is not performed. In the case of using, since the melting point of silver is low, the heat resistance of the bonded body becomes low.
In the invention of the prior application, metallization and bonding can be performed at the same time, but it is difficult to optimally control the film thickness of the chrome by chrome plating. An object of the present invention is to provide a method capable of joining ceramics and metals or ceramics with each other with high efficiency and also with high joining strength.

【0005】[0005]

【課題を解決するための手段】本発明は、セミックスと
金属又はセラミックスとセラミックスとの間に、クロー
ム薄膜層を形成したニッケル板からなる接合板をクロー
ム薄臆層がセラミックスに対向するように配設し、所定
の真空状態で加熱、加圧する方法において、前記クロー
ムとセラミックスとの反応層の厚さが1〜3μmとなる
ようにしたセラミックスと金属又はセラミックスとの接
合方法である。
According to the present invention, a bonding plate made of a nickel plate on which a chrome thin film layer is formed is arranged between a ceramic and a ceramic and a ceramic plate so that the chrome thin layer is opposed to the ceramic. It is a method of joining ceramics and metal or ceramics in which the thickness of the reaction layer of the chrome and the ceramics is 1 to 3 μm in the method of providing and heating under a predetermined vacuum state.

【0006】[0006]

【作用】接合板のクロ−ム層がセラミックスと接触して
その表面を金属化し、同時にクロ−ムとセラミックスの
窒素とが反応してCrxNyを生成して接合する。実験の
結果によると、クロ−ムとセラミックスとの反応層の厚
さを1〜3μmとしたときに接合部の接合強度が最も向
上し、これより薄くても厚過ぎても、接合部の接合強度
が低下する。
The chrome layer of the joining plate comes into contact with the ceramic to metallize its surface, and at the same time, the chrome reacts with the nitrogen of the ceramic to produce CrxNy and joins. According to the result of the experiment, when the thickness of the reaction layer of the chrome and the ceramic is 1 to 3 μm, the joint strength of the joint is most improved. Strength is reduced.

【0007】[0007]

【実施例】本発明の実施例を図面を参照して説明する。
例えば、窒化珪素セラミックス(Si3N4)同士を接合
する場合には、図1に示すように、セラミックス1,1
の間に、延性金属である厚さ0.2mmのニッケル(Ni)
板にクロ−ム鍍金又はIP法、蒸着法によりクロ−ム
(Cr)コ−ティングを施した接合板2,2を、クロ−
ム層をセラミックス1側に向けて配設し、これらを0.53
Kg/mm2で加圧し、5×10-5Torrの真空中で1130℃に加熱
して20分間保持する。クロ−ム層がセラミックスと接触
してその表面を金属化し、同時にクロ−ムとセラミック
スの窒素とが反応してCrxNyを生成して接合する。ま
た、接合板のクロ−ムコ−テイングは、接合板のニッケ
ルがセラミックス側に侵入してNi−Si化合物を生成す
るのを防止し、接合部の接合強度と耐熱性が向上する。
以上のとおり、ろう材として銀を用いずニッケルを使用
したことにより、接合部の耐熱性が向上し、1工程でセ
ラミックスの金属化と接合が行えるので、作業能率が向
上する。上記の接合条件は、真空度を10-4〜10-5To
rr、加圧力を0.1〜6Kg/mm2、加熱温度を1000〜1200
℃、保持時間を3〜60分の範囲で変更しても、セラミッ
クス同士の平均接合強度及び耐熱性は実質的に変わらな
い。上記条件の接合方法で、接合板2のクロ−ム層の厚
さを3.2〜3.8μmの範囲で変えて試験をした結果、セラ
ミックス同士の四点曲げ強度は、別表に示すよう400〜4
50MPaの高い接合強度が得られた。
An embodiment of the present invention will be described with reference to the drawings.
For example, when joining silicon nitride ceramics (Si3N4) to each other, as shown in FIG.
In between, a ductile metal with a thickness of 0.2 mm nickel (Ni)
The joint plates 2 and 2 in which the chromium (Cr) coating is applied to the plates by chromium plating, IP method, or vapor deposition method
The ceramic layer toward the ceramics 1 side,
Pressurize at Kg / mm 2 , heat to 1130 ° C. in a vacuum of 5 × 10 −5 Torr, and hold for 20 minutes. The chrome layer comes into contact with the ceramic to metallize its surface, and at the same time, the chrome reacts with the nitrogen of the ceramic to produce CrxNy and joins. Further, the chromium coating of the joint plate prevents nickel of the joint plate from penetrating into the ceramics side to form a Ni-Si compound, and the joint strength and heat resistance of the joint portion are improved.
As described above, by using nickel instead of silver as the brazing material, the heat resistance of the joint is improved, and the metallization and joining of the ceramics can be performed in one step, thus improving the work efficiency. The above-mentioned joining conditions are such that the degree of vacuum is 10 −4 to 10 −5 To.
rr, pressing force 0.1 to 6 kg / mm 2 , heating temperature 1000 to 1200
Even if the temperature and the holding time are changed within the range of 3 to 60 minutes, the average bonding strength and heat resistance of the ceramics do not substantially change. The bonding method under the above conditions was carried out by changing the thickness of the chrome layer of the bonding plate 2 in the range of 3.2 to 3.8 μm. As a result, the four-point bending strength between the ceramics was 400 to 4 as shown in the attached table.
A high bonding strength of 50 MPa was obtained.

【0008】別の実施例を図2ないし図4に示す。図2
では、低熱膨張材であるモリブデン(Mo)板3を接合
板2,2の間に介在させ、前記の場合と同様に真空雰囲
気中において、1000〜1200℃に加熱し、加圧した状態で
1〜60分間保持し、セラミックス1の表面にクロ−ムメ
タライズ層を形成すると同時にセラミックス同士を接合
する。図3では、軟質金属である銅(Cu)板4を接合
板2,2の間に介在させて熱応力の緩和を図り、同様に
真空雰囲気中において、加熱、加圧してセラミックス同
士を接合するものである。図4には、熱応力緩和材とし
て、モリブデン板3と2枚の銅板4を使用したものを示
し、接合条件は、上記の実施例の場合と同様とする。
Another embodiment is shown in FIGS. Figure 2
Then, a molybdenum (Mo) plate 3 which is a low thermal expansion material is interposed between the bonding plates 2 and 2, and is heated to 1000 to 1200 ° C. in a vacuum atmosphere in the same manner as in the above case, and 1 Hold for 60 minutes to form a chrome metallized layer on the surface of the ceramics 1 and at the same time bond the ceramics together. In FIG. 3, a copper (Cu) plate 4 which is a soft metal is interposed between the bonding plates 2 and 2 to reduce thermal stress, and similarly, heating and pressurizing are performed in a vacuum atmosphere to bond the ceramics together. It is a thing. FIG. 4 shows that a molybdenum plate 3 and two copper plates 4 are used as the thermal stress relaxation material, and the joining conditions are the same as in the case of the above embodiment.

【0009】次に、セラミックスと金属との接合につい
て説明する。図5に示すように、窒化珪素セラミックス
1と金属としてステンレス(SUS304)7を用い、
これらを接合するのに両者の間に、厚さ2.0mmのタング
ステン(W)板6の両側に、厚さ0.3mmのニッケル(N
i)板5,5を配設し、また、セラミックス1とニッケ
ル板5との間に、クロ−ム(Cr)コ−ティングを施し
たした厚さ0.2mmのニッケル板からなる接合板2をクロ
−ム層がセラミックス1と当接するように挟み、これら
を0.53Kg/mm2で加圧し、5×10-5Torrの真空中で1130
℃に加熱して20分間保持する。上記条件の接合方法で、
接合板2のクロ−ム層の厚さを約1〜10μmの範囲で変
えて試験をした結果、セラミックス1とステンレス7と
の四点曲げ強度は、別表に示すよう80〜450MPaの範囲
で変化した。上記の接合条件は、真空度を10-4〜10
-5Torr、加圧力を0.1〜6Kg/mm2、加熱温度を1000〜12
00℃、保持時間を3〜60分の範囲で変更しても、セラミ
ックスとステンレスの平均接合強度及び耐熱性は実質的
に変わらない。
Next, the joining of ceramics and metal will be described. As shown in FIG. 5, using silicon nitride ceramics 1 and stainless steel (SUS304) 7 as a metal,
To join these, between both sides, on both sides of the tungsten (W) plate 6 having a thickness of 2.0 mm, nickel (N
i) Plates 5 and 5 are arranged, and a bonding plate 2 made of a nickel plate having a thickness of 0.2 mm and having a chromium (Cr) coating between the ceramics 1 and the nickel plate 5 is provided. It is sandwiched so that the chrome layer is in contact with the ceramics 1, these are pressed at 0.53 Kg / mm 2 , and the pressure is 1130 in a vacuum of 5 × 10 −5 Torr.
Heat to ℃ and hold for 20 minutes. With the joining method under the above conditions,
As a result of a test in which the thickness of the chrome layer of the bonding plate 2 was changed within the range of about 1 to 10 μm, the four-point bending strength of the ceramic 1 and the stainless steel 7 changed within the range of 80 to 450 MPa as shown in the attached table. did. The above-mentioned joining conditions are such that the degree of vacuum is 10 −4 to 10
-5 Torr, pressurizing force 0.1 to 6 kg / mm 2 , heating temperature 1000 to 12
Even if the holding time is changed to 00 ° C and the holding time is in the range of 3 to 60 minutes, the average bonding strength and heat resistance of ceramics and stainless steel do not substantially change.

【0010】上記接合試料の接合部における成分分析を
実施した結果、接合板のニッケル-クロ−ム中のCrだけ
が、Si3N4の分解によるNyと反応してCrxNyを形成
して接合し、接合強度は、このCrxNy層の厚さに大き
く影響されることが判明した。CrxNyの厚さは、図6
に示すように、1〜3μm程度が最適であり、これより
薄いと、NiとSiとの共晶が進行し、厚過ぎると、Crx
Ny自体の強度が低いので接合強度が低下する。CrxNy
層の厚さは、接合板のクロ−ム層の厚さと相関を有する
ので、接合板のクロ−ム層の厚さは、目標値にたいし±
0.3μm以内の高精度に制御する必要がある。
As a result of the component analysis of the joint portion of the above-mentioned joint sample, only Cr in the nickel-chrome of the joint plate reacts with Ny due to the decomposition of Si3N4 to form CrxNy and joints the joint strength. Was found to be greatly affected by the thickness of this CrxNy layer. The thickness of CrxNy is shown in FIG.
As shown in FIG. 3, the optimum thickness is about 1 to 3 μm. When the thickness is thinner than this, the eutectic of Ni and Si proceeds, and when it is too thick, Crx
Since the strength of Ny itself is low, the bonding strength is reduced. CrxNy
Since the thickness of the layer has a correlation with the thickness of the chrome layer of the bonding plate, the thickness of the chrome layer of the bonding plate is ±
It is necessary to control with high accuracy within 0.3 μm.

【0011】 [0011]

【発明の効果】本発明は、セラミックスと金属又はセラ
ミックス同士の接合部の接合強度を最も高くすることが
でき、また、1工程で接合が行えるので作業能率を向上
することができる効果がある。
The present invention has the effect of maximizing the joint strength at the joint between ceramics and metal or between ceramics, and since the joining can be performed in one step, the work efficiency can be improved.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明方法の一実施例の説明図。FIG. 1 is an explanatory view of an embodiment of the method of the present invention.

【図2】本発明方法の他の実施例の説明図。FIG. 2 is an explanatory view of another embodiment of the method of the present invention.

【図3】本発明方法の他の実施例の説明図。FIG. 3 is an explanatory view of another embodiment of the method of the present invention.

【図4】本発明方法の他の実施例の説明図。FIG. 4 is an explanatory view of another embodiment of the method of the present invention.

【図5】本発明方法の他の実施例の説明図。FIG. 5 is an explanatory view of another embodiment of the method of the present invention.

【図6】本発明方法による接合強度を示す図。FIG. 6 is a diagram showing the bonding strength by the method of the present invention.

【符号の説明】[Explanation of symbols]

1 セラミックス 2 クロ−ムコ−ティングニッケル板 3 モリブデン板 4 銅板 5 ニッケル板 6 タングステン板 1 Ceramics 2 Chrome Coating Nickel Plate 3 Molybdenum Plate 4 Copper Plate 5 Nickel Plate 6 Tungsten Plate

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−90878(JP,A) 特開 昭61−137688(JP,A) 特開 昭63−274677(JP,A) 特開 昭63−230576(JP,A) 特開 平4−26571(JP,A) ─────────────────────────────────────────────────── ─── Continuation of front page (56) Reference JP-A-60-90878 (JP, A) JP-A-61-137688 (JP, A) JP-A-63-274677 (JP, A) JP-A-63- 230576 (JP, A) JP-A-4-26571 (JP, A)

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 セミックスと金属又はセラミックスとセ
ラミックスとの間に、クローム薄膜層を形成したニッケ
板からなる接合板をクローム薄膜層がセラミックスに
対向するように配設し、所定の真空状熊で加熱、加圧す
る方法において、前記クロームとセラミックスとの反応
層の厚さが1〜3μmとなるようにしたことを特徴とす
るセラミックスと金属又はセラミックスとの接合方法。
Between 1. A Semikkusu metal or ceramics and ceramics to form a chrome thin film layer nickel
In the method of arranging a bonding plate made of a copper plate so that the chrome thin film layer faces the ceramics and heating and pressurizing with a predetermined vacuum bear, the thickness of the reaction layer of the chrome and the ceramics is 1 to 3 μm. A method for joining ceramics and metal or ceramics, characterized in that
JP3157374A 1991-06-03 1991-06-03 Method for joining ceramics and metal or ceramics Expired - Fee Related JP2522125B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3157374A JP2522125B2 (en) 1991-06-03 1991-06-03 Method for joining ceramics and metal or ceramics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3157374A JP2522125B2 (en) 1991-06-03 1991-06-03 Method for joining ceramics and metal or ceramics

Publications (2)

Publication Number Publication Date
JPH04357177A JPH04357177A (en) 1992-12-10
JP2522125B2 true JP2522125B2 (en) 1996-08-07

Family

ID=15648263

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3157374A Expired - Fee Related JP2522125B2 (en) 1991-06-03 1991-06-03 Method for joining ceramics and metal or ceramics

Country Status (1)

Country Link
JP (1) JP2522125B2 (en)

Also Published As

Publication number Publication date
JPH04357177A (en) 1992-12-10

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