JPS6362477B2 - - Google Patents
Info
- Publication number
- JPS6362477B2 JPS6362477B2 JP58065373A JP6537383A JPS6362477B2 JP S6362477 B2 JPS6362477 B2 JP S6362477B2 JP 58065373 A JP58065373 A JP 58065373A JP 6537383 A JP6537383 A JP 6537383A JP S6362477 B2 JPS6362477 B2 JP S6362477B2
- Authority
- JP
- Japan
- Prior art keywords
- ceramic body
- composition
- nitride
- metallized
- metal
- 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
Links
- 239000000919 ceramic Substances 0.000 claims description 40
- 239000000203 mixture Substances 0.000 claims description 30
- 229910052751 metal Inorganic materials 0.000 claims description 24
- 239000002184 metal Substances 0.000 claims description 24
- 150000004767 nitrides Chemical class 0.000 claims description 20
- 239000000843 powder Substances 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- 230000001590 oxidative effect Effects 0.000 claims description 12
- 229910002804 graphite Inorganic materials 0.000 claims description 8
- 239000010439 graphite Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 229910052748 manganese Inorganic materials 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 239000011888 foil Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims 1
- 238000001465 metallisation Methods 0.000 description 13
- 239000011521 glass Substances 0.000 description 6
- 150000002739 metals Chemical class 0.000 description 5
- 229910052723 transition metal Inorganic materials 0.000 description 5
- 150000003624 transition metals Chemical class 0.000 description 5
- 238000007747 plating Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Ceramic Products (AREA)
Description
〔発明の利用分野〕
本発明、窒化物系セラミツクス体を金属化する
ための組成物及びその金属化方法に関する。
〔発明の背景〕
窒化物系セラミツクス体を金属化するものとし
ては、例えば特開昭55−113682号公報に開示され
て窒化物系セラミツクスの金属化組成物及び金属
化法がある。この金属化組成物は、耐熱金属粉末
成分と、被金属化窒化物系セラミツクス焼結体及
び前記耐熱金属粉末成分の両者に濡れ性を有する
ガラス粉末成分とを混合したものから成り、また
金属化法は、窒化物系セラミツクス焼結体表面に
耐熱金属粉末成分とガラス成分の各々の粉末混合
物より成るペーストを塗布した後、非酸化性また
は弱酸化性囲気下で1000〜1600℃の温度範囲で焼
成するものである。
しかし、前記の金属化組成物においては、ガラ
ス粉末成分を混合しているため、次のような問題
がある。
(1) ガラス粉末成分の量が多い場合、焼成時に該
ガラス粉末が発泡して金属化層はポーラスとな
ることがある。その結果、金属化したセラミツ
クと他の金属を接合した場合、その強度信頼性
が低下する。
(2) ガラス粉末成分は、窒化物系セラミツク焼結
体との濡れ性は良いが金属との濡れ性が悪い。
従つて、金属化したセラミツク焼結体と金属
（例えば鋼）を接合する場合には、セラミツク
の金属化後、その金属化表面にNi、Cu等のメ
ツキを施す必要がある。
〔発明の目的〕
本発明の目的は、窒化物系セラミツクス体の金
属化を良好に行えることは勿論の他、金属化表面
へメツキ処理を施すことなくセラミツクス体と金
属との接合を行え、しかもセラミツクス体の金属
化と同時に該セラミツクス体と金属との接合を行
うこともできる窒化物系セラミツクス体の金属化
組成物及びその金属化方法を提供することにあ
る。
〔発明の概要〕
本発明は、Fe、Ni、Mn、Crなどの選移金属
が窒化物系セラミツクス体及び金属の両者に対し
て濡れ性が良く、かつＣ、Ｂ、黒鉛（Gr）が、
前記遷移金属の濡れ性をさらに向上させることを
見出して、前記遷移金属を主成分とし、これに
Ｃ、Ｂ、黒鉛（Gr）を添加した組成物を、非酸
化性または弱酸化性雰囲気下において溶融状態で
セラミツクス体と接触させたことを特徴とするも
のである。
〔発明の実施例〕
以下、本発明の詳細を説明すると、金属化組成
物は、Fe、Ni、Cr、Mnのうち少なくとも１種
以上の金属成分を20重量％以上と、Ｃ、Ｂ、黒鉛
（Gr）のうち少なくとも１種以上の成分を10重量
％以下を含有したものから成つている。そして、
前記組成物を粉末あるいは箔の形で窒化物系セラ
ミツクス体の表面に載置し、非酸化性または弱酸
化性雰囲気下において1000〜1700℃の温度範囲で
前記組成物を溶融させるか、または予め溶融させ
た前記組成物を非酸化性または弱酸化性雰囲気下
において窒化物系セラミツクスの表面に溶射する
ものである。
しかるに本発明において、その金属化組成物は
窒化物系セラミツクス体に対して濡れ性の良い
Fe、Ni、Mn、Crなどの遷移金属成分と、これ
ら遷移金属の濡れ性をさらに向上させるＣ、Ｂ、
黒鉛（Gr）の成分とを混合したものから成つて
いるので、セラミツクスの金属化が良好に行われ
る。そして、良好なる金属化層が得られることに
より、金属化したセラミツクス体と他の金属と
を、メツキ処理を施すことなく接合することが可
能となる。
また、前記金属化組成物の主成分である遷移金
属は、セラミツクス体の他に、金属に対しても濡
れ性が良いので、セラミツクス体の表面に金属化
組成物の粉末（または箔）を載置し、加熱してこ
れを溶融すると共に、該溶融金属化組成物に被接
合金属を押し付ければ、セラミツクス体の金属化
と同時に、セラミツクス体と前記被接合金属との
接合を行うこともできる。
尚、本発明の金属化組成物において、Fe、Ni、
Mn、Crのうち少なくとも１種以上の金属成分は
20重量％以上必要で、それより少ない場合にはセ
ラミツクス体が局部的にしか金属化されない。ま
た濡れ性の向上及び融点の降下を図るためにＣ、
Ｂ、黒鉛（Gr）のうち１種以上を添加するが、
その添加量が多くなるに伴つて融点は降下する
が、10重量％以上では金属化層が脆弱となり好ま
しくない。また前記金属化組成物の加熱温度を、
1000〜1700℃の範囲としたのは、1000℃以下の温
度では金属化組成物が溶融せず、金属化が不可能
となり、また1700℃以上ではセラミツクス体が分
解してしまうからである。ただし、金属化と同時
に被接合金属との接合を行う場合には、その被接
合金属の融点以下で溶融する金属化組成物を使用
する。
また本発明の金属化方法において、金属化組成
物の粉末の粒径は細かい方が好ましい。
次に窒化物系セラミツクス体として窒化珪素セ
ラミツクスを選び金属化を行つた実施例を説明す
る。
下記の表は各種金属化組成物の組成、金属化条
件及び金属化の結果を示している。ここで、各金
属化組成物は、混合粉及び合金粉を調合したもの
で、セラミツクス体に有機バインダを用いて塗布
し、乾燥後加熱、溶融させて金属化させたもので
ある。
[Field of Application of the Invention] The present invention relates to a composition for metallizing a nitride-based ceramic body and a method for metallizing the same. [Background of the Invention] Examples of methods for metallizing nitride-based ceramic bodies include a metallization composition and method for nitride-based ceramics disclosed in Japanese Patent Application Laid-Open No. 113682/1982. This metallized composition is composed of a mixture of a heat-resistant metal powder component and a glass powder component that has wettability to both the metallized nitride ceramic sintered body and the heat-resistant metal powder component. The method involves applying a paste consisting of a powder mixture of a heat-resistant metal powder component and a glass component to the surface of a nitride-based ceramic sintered body, and then applying the paste at a temperature range of 1000 to 1600°C under a non-oxidizing or slightly oxidizing atmosphere. It is something that is fired. However, in the metallized composition described above, since a glass powder component is mixed, there are the following problems. (1) If the amount of the glass powder component is large, the glass powder may foam during firing and the metallized layer may become porous. As a result, when metallized ceramic and other metals are bonded, the strength and reliability of the bond decreases. (2) The glass powder component has good wettability with nitride-based ceramic sintered bodies, but poor wettability with metals.
Therefore, when joining a metallized ceramic sintered body to a metal (for example, steel), it is necessary to plate the metallized surface with Ni, Cu, etc. after metallizing the ceramic. [Object of the Invention] The object of the present invention is not only to be able to metallize a nitride-based ceramic body well, but also to be able to join a ceramic body to a metal without plating the metallized surface. It is an object of the present invention to provide a metallization composition for a nitride-based ceramic body and a method for metallizing the same, which can simultaneously metalize the ceramic body and bond the ceramic body to a metal. [Summary of the Invention] The present invention provides that transferable metals such as Fe, Ni, Mn, and Cr have good wettability to both nitride ceramic bodies and metals, and that C, B, and graphite (Gr)
It was discovered that the wettability of the transition metal could be further improved, and a composition containing the transition metal as a main component and to which C, B, and graphite (Gr) were added was prepared in a non-oxidizing or weakly oxidizing atmosphere. It is characterized by being brought into contact with a ceramic body in a molten state. [Embodiments of the Invention] The details of the present invention will be described below. The metallized composition contains at least 20% by weight of at least one metal component among Fe, Ni, Cr, and Mn, and C, B, and graphite. (Gr) containing 10% by weight or less of at least one component. and,
The composition is placed in the form of a powder or foil on the surface of a nitride-based ceramic body, and the composition is melted in a temperature range of 1000 to 1700°C in a non-oxidizing or weakly oxidizing atmosphere, or the composition is melted in advance. The molten composition is sprayed onto the surface of nitride ceramics in a non-oxidizing or weakly oxidizing atmosphere. However, in the present invention, the metallized composition has good wettability to the nitride ceramic body.
Transition metal components such as Fe, Ni, Mn, and Cr, and C, B, which further improves the wettability of these transition metals.
Since it is made of a mixture of graphite (Gr) and graphite (Gr), metallization of ceramics is performed well. By obtaining a good metallized layer, it becomes possible to join the metallized ceramic body and another metal without plating. In addition, since the transition metal, which is the main component of the metallized composition, has good wettability not only to the ceramic body but also to metals, the powder (or foil) of the metallized composition is applied to the surface of the ceramic body. If the ceramic body is heated and melted and the metal to be welded is pressed onto the molten metallized composition, the ceramic body and the metal to be welded can be simultaneously metallized. . In addition, in the metallized composition of the present invention, Fe, Ni,
At least one metal component among Mn and Cr is
20% by weight or more is required; if it is less than that, the ceramic body will only be metallized locally. In addition, in order to improve wettability and lower the melting point, C,
B. One or more types of graphite (Gr) are added,
The melting point decreases as the amount added increases, but if it exceeds 10% by weight, the metallized layer becomes brittle, which is not preferable. Furthermore, the heating temperature of the metallized composition is
The reason why the range is 1000 to 1700°C is that at temperatures below 1000°C, the metallization composition does not melt and metallization becomes impossible, and at temperatures above 1700°C, the ceramic body decomposes. However, when joining the metal to be joined at the same time as metallization, a metallizing composition that melts at a temperature below the melting point of the metal to be joined is used. Further, in the metallization method of the present invention, it is preferable that the powder of the metallization composition has a finer particle size. Next, an example will be described in which silicon nitride ceramics were selected as the nitride-based ceramic body and metallized. The table below shows the composition, metallization conditions and metallization results for various metallization compositions. Here, each metallization composition is a mixture of mixed powder and alloy powder, which is applied to a ceramic body using an organic binder, dried, and then heated and melted to metallize it.
以上説明したように、本発明によれば、窒化物
系セラミツクス体の金属化を良好に行えると共
に、金属化したセラミツクス体を金属とを、メツ
キ処理を施すことなく接合させることができる。
またセラミツクス体の金属化と同時に該セラミツ
クス体と金属との接合も行える。
As described above, according to the present invention, a nitride-based ceramic body can be metallized satisfactorily, and the metallized ceramic body can be joined to a metal without plating.
Furthermore, the ceramic body and metal can be joined together at the same time as the metallization of the ceramic body.
第１図及び第２図は本発明において窒化物系セ
ラミツクス体と被接合金属とを接合した例を示す
正面図及び断面図である。
１……窒化物系セラミツクス体、２……金属化
層、３……被接合金属。
FIGS. 1 and 2 are a front view and a sectional view showing an example in which a nitride-based ceramic body and a metal to be joined are bonded in the present invention. 1...Nitride-based ceramic body, 2...Metalized layer, 3...Metal to be joined.
Claims (1)
上の金属成分20重量％以上に、Ｃ、Ｂ、黒鉛
（Gr）のうち少なくとも１種以上の成分10重量％
以下を混合した組成物を、粉末あるいは箔の形で
窒化物系セラミツクス体の表面に載置し、非酸化
性または弱酸化性雰囲気下において前記組成物を
溶融させることを特徴とする窒化物系セラミツク
ス体の金属化方法。 ２ Fe、Ni、Cr、Mnのうち少なくとも１種以
上の金属成分20重量％以上に、Ｃ、Ｂ、黒鉛
（Gr）のうち少なくとも１種以上の成分10重量％
以下を混合した組成物を、非酸化性または弱酸化
性雰囲気下において窒化物系セラミツクス体の表
面に溶射することを特徴とする窒化物系セラミツ
クス体の金属化方法。[Claims] 1 20% by weight or more of a metal component of at least one of Fe, Ni, Cr, and Mn, and 10% by weight of a component of at least one of C, B, and graphite (Gr).
A nitride system characterized by placing a composition in the form of a powder or foil on the surface of a nitride ceramic body, and melting the composition in a non-oxidizing or weakly oxidizing atmosphere. Method of metallizing ceramic bodies. 2 20% by weight or more of at least one metal component among Fe, Ni, Cr, and Mn, and 10% by weight of at least one component among C, B, and graphite (Gr)
A method for metallizing a nitride-based ceramic body, which comprises spraying a composition containing the following on the surface of the nitride-based ceramic body in a non-oxidizing or weakly oxidizing atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6537383A JPS59195590A (en) | 1983-04-15 | 1983-04-15 | Nitride ceramic body metallizing composition and metallization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6537383A JPS59195590A (en) | 1983-04-15 | 1983-04-15 | Nitride ceramic body metallizing composition and metallization |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59195590A JPS59195590A (en) | 1984-11-06 |
| JPS6362477B2 true JPS6362477B2 (en) | 1988-12-02 |
Family
ID=13285093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6537383A Granted JPS59195590A (en) | 1983-04-15 | 1983-04-15 | Nitride ceramic body metallizing composition and metallization |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59195590A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60180968A (en) * | 1984-02-24 | 1985-09-14 | 株式会社小松製作所 | Insert material for bonding nitride ceramic |
| JPS62212270A (en) * | 1986-03-13 | 1987-09-18 | 三菱マテリアル株式会社 | Manufacture of ceramic-iron base metal composite body |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57106587A (en) * | 1980-12-24 | 1982-07-02 | Ngk Spark Plug Co | Silicon carbide sintered body with metallized surface and manufacture |
-
1983
- 1983-04-15 JP JP6537383A patent/JPS59195590A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57106587A (en) * | 1980-12-24 | 1982-07-02 | Ngk Spark Plug Co | Silicon carbide sintered body with metallized surface and manufacture |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59195590A (en) | 1984-11-06 |
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