JPH04267012A - Electric contact material and manufacture thereof - Google Patents
Electric contact material and manufacture thereofInfo
- Publication number
- JPH04267012A JPH04267012A JP3049038A JP4903891A JPH04267012A JP H04267012 A JPH04267012 A JP H04267012A JP 3049038 A JP3049038 A JP 3049038A JP 4903891 A JP4903891 A JP 4903891A JP H04267012 A JPH04267012 A JP H04267012A
- Authority
- JP
- Japan
- Prior art keywords
- ceramic particles
- al2o3
- contact material
- electrical contact
- silver
- 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
- 239000000463 material Substances 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000000919 ceramic Substances 0.000 claims abstract description 26
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 16
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract description 16
- 229910052709 silver Inorganic materials 0.000 claims abstract description 7
- 239000004332 silver Substances 0.000 claims abstract description 7
- 238000005245 sintering Methods 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims description 25
- 238000009792 diffusion process Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 4
- 238000005299 abrasion Methods 0.000 abstract description 4
- 229910018404 Al2 O3 Inorganic materials 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Landscapes
- Manufacture Of Switches (AREA)
- Contacts (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は電気回路に使用されるリ
レー、スイッチ等の電気接点材料とその製造方法に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to electrical contact materials for relays, switches, etc. used in electrical circuits, and a method for manufacturing the same.
【０００２】0002
【従来の技術】従来、Ａｌ２ Ｏ３ のセラミック粒子
を銀中に分散させると、硬度、耐アーク性等が向上する
ことが知られている。BACKGROUND OF THE INVENTION It has been known that hardness, arc resistance, etc. can be improved by dispersing Al2 O3 ceramic particles in silver.
【０００３】0003
【発明が解決しようとする課題】しかしながら、従来の
Ａｌ２ Ｏ３ のセラミック粒子を分散した複合材料で
は、Ａｌ２ Ｏ３のセラミック粒子の分散のために焼結
による緻密化が阻害されるとともに、焼結後、Ａｌ２
Ｏ３ のセラミック粒子とＡｇとは化学的に結合してい
ないため、例えば接点表面にＡｌ２ Ｏ３ のセラミッ
ク粒子が現れると表面よりＡｌ２ Ｏ３ のセラミック
粒子が脱落する問題があった。[Problems to be Solved by the Invention] However, in conventional composite materials in which ceramic particles of Al2O3 are dispersed, densification by sintering is inhibited due to the dispersion of ceramic particles of Al2O3, and after sintering, Al2
Since O3 ceramic particles and Ag are not chemically bonded, for example, when Al2 O3 ceramic particles appear on the contact surface, there is a problem that the Al2 O3 ceramic particles fall off from the surface.
【０００４】そのため、電気回路に使用されるリレー、
スイッチ等の電気接点材料に使用すると、硬度や耐アー
ク性は向上するにもかかわらず、耐磨耗性が悪いために
、十分な接点寿命が得られなかった。[0004] Therefore, relays used in electric circuits,
When used in electrical contact materials such as switches, although the hardness and arc resistance are improved, a sufficient contact life cannot be obtained due to poor wear resistance.
【０００５】本発明の目的は、上記の問題点を解決して
、Ａｇ中にＡｌ２ Ｏ３ のセラミック粒子を分散させ
ることにより硬度、耐アーク性が向上して、しかも十分
実用に耐える低磨耗性の電気接点材料を提供するもので
ある。The object of the present invention is to solve the above-mentioned problems and to improve the hardness and arc resistance by dispersing Al2O3 ceramic particles in Ag, and to create a material with low abrasion that is sufficiently suitable for practical use. The present invention provides electrical contact materials.
【０００６】[0006]
【問題点を解決するための手段】本発明は、０．１〜２
０重量％のＡｌ２ Ｏ３ のセラミック粒子と、０．０
１〜２．０重量％のバインダとしてのＴｉを含有し残部
銀から成ることを特徴とする電気接点材料であり、Ａｌ
２ Ｏ３ のセラミック粒子と、バインダとしてのＴｉ
を混合した後、８００〜１０００℃で３０分以上の拡散
処理を行いセラミック粒子の表面にＴｉ拡散層を形成し
、さらに銀と混合した後、７００〜９５０℃で３０分以
上の焼結処理を行うことを特徴とする電気接点材料の製
造方法である。[Means for Solving the Problems] The present invention provides 0.1 to 2
0% by weight of Al2O3 ceramic particles and 0.0% by weight of Al2O3 ceramic particles.
It is an electrical contact material characterized by containing 1 to 2.0% by weight of Ti as a binder and the balance consisting of silver.
2 O3 ceramic particles and Ti as a binder
After mixing, a diffusion treatment is performed at 800 to 1000°C for 30 minutes or more to form a Ti diffusion layer on the surface of the ceramic particles, and after further mixing with silver, a sintering treatment is performed at 700 to 950°C for 30 minutes or more. A method of manufacturing an electrical contact material is characterized in that:
【０００７】[0007]
【作用】上記の構成において、最も特徴とするところは
、ＴｉをＡｌ２ Ｏ３ のセラミック粒子の１０重量％
程度含有させることによりＡｌ２ Ｏ３ のセラミック
粒子とＡｇとが、Ａｇ−Ｔｉ−Ｏ−Ａｌ結合により化学
的に強固に密着するため、例えば、電気接点表面の上記
Ａｌ２ Ｏ３ のセラミック粒子が現れても該粒子が接
点表面より脱落することが極めて少なくなる。[Operation] The most distinctive feature of the above structure is that Ti is added to 10% by weight of the Al2O3 ceramic particles.
By including the Al2O3 ceramic particles to a certain extent, Ag and the Al2O3 ceramic particles chemically adhere firmly through Ag-Ti-O-Al bonds, so that even if the Al2O3 ceramic particles appear on the surface of the electrical contact, the Particles are extremely unlikely to fall off the contact surface.
【０００８】また、Ａｇ中にＴｉを添加することは焼結
性を向上させるので、結果として本発明の複合材料も焼
結性が向上する。Furthermore, since adding Ti to Ag improves sinterability, the composite material of the present invention also has improved sinterability.
【０００９】また、Ａｌ２ Ｏ３ のセラミック粒子含
有量を０．１〜２０重量％と規定したのは、０．１重量
％未満では硬度の増加、耐アーク性の改善が見られなく
なり、２０重量％を越えると、加工性の低下はもちろん
耐磨耗性が著しく悪くなるためである。[0009] Furthermore, the ceramic particle content of Al2O3 was specified to be 0.1 to 20% by weight, because if it is less than 0.1% by weight, no increase in hardness or improvement in arc resistance will be observed; This is because if it exceeds this, not only the workability decreases but also the abrasion resistance deteriorates significantly.
【００１０】なお、Ａｌ２ Ｏ３ のセラミック粒子の
粒度は好ましくは、２ミクロン以下の微細な粒子が良い
。[0010] The particle size of the Al2O3 ceramic particles is preferably fine particles of 2 microns or less.
【００１１】以下、本発明をより詳しく説明するための
実施例を記載するが、該実施例は本発明を限定するもの
ではない。[0011] Examples will be described below to explain the present invention in more detail, but these examples are not intended to limit the present invention.
【００１２】0012
【実施例】表１に示すＡｌ２ Ｏ３ のセラミック粒子
と、Ａｌ２ Ｏ３ のセラミック粒子の１０重量％のＴ
ｉをＶ型混合機で１時間混合した後、８５０℃で１時間
の拡散処理を行った。[Example] Al2 O3 ceramic particles shown in Table 1 and 10% by weight T of the Al2 O3 ceramic particles
After mixing i with a V-type mixer for 1 hour, a diffusion treatment was performed at 850° C. for 1 hour.
【００１３】さらに、表１に示すＡｇを混ぜてＶ型混合
機で１時間混合した。その後、粉末冶金の手法に従って
、粉末の圧縮成型と８５０℃で４時間の焼結処理を繰り
返し行いビレットを作製した。Further, Ag shown in Table 1 was mixed and mixed for 1 hour using a V-type mixer. Thereafter, compression molding of the powder and sintering treatment at 850° C. for 4 hours were repeated to produce a billet according to a powder metallurgy technique.
【００１４】次に、熱間押出し、伸線加工、ヘッダー加
工をへて頭部径５ｍｍ、頭高１ｍｍ、脚部径２．５ｍｍ
、脚長２．５ｍｍの固定接点と頭部径４ｍｍ、頭高１．
１ｍｍ、脚部径２．８ｍｍ、脚長１．６ｍｍの頭部球状
ｒ５ｍｍの可動接点を得た。Next, after hot extrusion, wire drawing, and header processing, the head diameter is 5 mm, the head height is 1 mm, and the leg diameter is 2.5 mm.
, fixed contact with leg length 2.5 mm, head diameter 4 mm, and head height 1.
A movable contact with a spherical head r5mm and a leg diameter of 2.8mm and a leg length of 1.6mm was obtained.
【００１５】そして、これらのリベット接点をヒンジ型
リレーに組み込み表２の試験条件にて消耗試験を行い、
図２に示す結果を得た。また、従来例も同様の方法で試
験を行った。なお、本発明の電気接点材料の製造方法工
程を図１に示す。[0015] Then, these rivet contacts were assembled into a hinge type relay and a wear test was conducted under the test conditions shown in Table 2.
The results shown in FIG. 2 were obtained. Further, the conventional example was also tested in the same manner. Incidentally, the steps of the method for manufacturing the electrical contact material of the present invention are shown in FIG.
【００１６】[0016]
【表１】[Table 1]
【００１７】[0017]
【表２】[Table 2]
【００１８】[0018]
【発明の効果】以上の説明から明らかなように、本発明
の電気接点材料によれば、Ａｇ中に所定量のＴｉをＡｌ
２ Ｏ３ のセラミック粒子に分散させて添加すること
により、Ａｇ−Ｔｉ−Ｏ−Ａｌ結合により化学的に強固
に密着するため、耐磨耗性の良好な電気接点材料が得ら
れ、電気回路に使用するリレー、スイッチ等に利用でき
るものである。Effects of the Invention As is clear from the above explanation, according to the electrical contact material of the present invention, a predetermined amount of Ti is added to Al in Ag.
By dispersing and adding 2 O3 to ceramic particles, it forms a strong chemical bond through Ag-Ti-O-Al bonds, resulting in an electrical contact material with good wear resistance, making it suitable for use in electrical circuits. It can be used for relays, switches, etc.
【図１】本発明の電気接点材料の製造方法の工程図を示
す。FIG. 1 shows a process diagram of a method for manufacturing an electrical contact material of the present invention.
【図２】実施例及び従来例の消耗試験結果のグラフ。FIG. 2 is a graph of the wear test results of the example and the conventional example.
Claims (2)
のセラミック粒子と、０．０１〜２．０重量％のバイン
ダとしてのＴｉを含有し残部銀から成ることを特徴とす
る電気接点材料。Claim 1: 0.1-20% by weight of Al2O3
1. An electrical contact material comprising: ceramic particles; and 0.01 to 2.0% by weight of Ti as a binder, with the balance being silver.
バインダとしてのＴｉを混合した後、８００〜１０００
℃で３０分以上の拡散処理を行いセラミック粒子の表面
にＴｉ拡散層を形成し、さらに銀と混合した後、７００
〜９５０℃で３０分以上の焼結処理を行うことを特徴と
する電気接点材料の製造方法。[Claim 2] Ceramic particles of Al2O3;
After mixing Ti as a binder, 800-1000
After performing a diffusion treatment at ℃ for 30 minutes or more to form a Ti diffusion layer on the surface of the ceramic particles and further mixing with silver,
A method for producing an electrical contact material, comprising performing a sintering treatment at ~950°C for 30 minutes or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3049038A JPH04267012A (en) | 1991-02-21 | 1991-02-21 | Electric contact material and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3049038A JPH04267012A (en) | 1991-02-21 | 1991-02-21 | Electric contact material and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04267012A true JPH04267012A (en) | 1992-09-22 |
Family
ID=12819918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3049038A Pending JPH04267012A (en) | 1991-02-21 | 1991-02-21 | Electric contact material and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04267012A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003514985A (en) * | 1999-10-14 | 2003-04-22 | フォルシュングスツェントルム・ユーリッヒ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Component having layer and method for producing such layer |
-
1991
- 1991-02-21 JP JP3049038A patent/JPH04267012A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003514985A (en) * | 1999-10-14 | 2003-04-22 | フォルシュングスツェントルム・ユーリッヒ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Component having layer and method for producing such layer |
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