JPS6317898B2 - - Google Patents
Info
- Publication number
- JPS6317898B2 JPS6317898B2 JP5857278A JP5857278A JPS6317898B2 JP S6317898 B2 JPS6317898 B2 JP S6317898B2 JP 5857278 A JP5857278 A JP 5857278A JP 5857278 A JP5857278 A JP 5857278A JP S6317898 B2 JPS6317898 B2 JP S6317898B2
- Authority
- JP
- Japan
- Prior art keywords
- electrical contact
- silver
- oxide
- tin
- internal oxidation
- 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
- 239000000463 material Substances 0.000 claims description 25
- 230000003647 oxidation Effects 0.000 claims description 11
- 238000007254 oxidation reaction Methods 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 7
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 229910052732 germanium Inorganic materials 0.000 claims description 4
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 239000004332 silver Substances 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 239000013078 crystal Substances 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- ASMQPJTXPYCZBL-UHFFFAOYSA-N [O-2].[Cd+2].[Ag+] Chemical compound [O-2].[Cd+2].[Ag+] ASMQPJTXPYCZBL-UHFFFAOYSA-N 0.000 description 5
- BHIPBUKJLPRGMJ-UHFFFAOYSA-N [Sn+2]=O.[O-2].[Zn+2].[Ag+] Chemical compound [Sn+2]=O.[O-2].[Zn+2].[Ag+] BHIPBUKJLPRGMJ-UHFFFAOYSA-N 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- DUCFBDUJLLKKPR-UHFFFAOYSA-N [O--].[Zn++].[Ag+] Chemical compound [O--].[Zn++].[Ag+] DUCFBDUJLLKKPR-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052793 cadmium Inorganic materials 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical compound [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- 229910001887 tin oxide Inorganic materials 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- CXKCTMHTOKXKQT-UHFFFAOYSA-N cadmium oxide Inorganic materials [Cd]=O CXKCTMHTOKXKQT-UHFFFAOYSA-N 0.000 description 1
- CFEAAQFZALKQPA-UHFFFAOYSA-N cadmium(2+);oxygen(2-) Chemical compound [O-2].[Cd+2] CFEAAQFZALKQPA-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- IVQODXYTQYNJFI-UHFFFAOYSA-N oxotin;silver Chemical compound [Ag].[Sn]=O IVQODXYTQYNJFI-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910001923 silver oxide Inorganic materials 0.000 description 1
- BSWGGJHLVUUXTL-UHFFFAOYSA-N silver zinc Chemical compound [Zn].[Ag] BSWGGJHLVUUXTL-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Conductive Materials (AREA)
Description
（産業上の利用分野）
本発明は電気接点材料に係り、殊に内部酸化法
により製造される銀−酸化物系電気接点材料であ
り、更に言及すれば電磁開閉器用として好適な銀
−酸化亜鉛−酸化錫系の電気接点材料に係る。
（従来の技術及びその問題点）
一般に、電気接点材料は耐消耗性及び耐溶着性
に優れたものでなければならない。このような特
性をほぼ満足させる電気接点材料として、従来、
銀−酸化カドミウム系の電気接点材料が汎用され
てきた。しかしながら、カドミウムが人体に有害
であり、溶解中に蒸発し易いために、公害発生防
止の観点から、銀−酸化カドミウム系の電気接点
材料は好ましいものとは云えない。
そこで、近年に至り、カドミウムを含有しな
い、内部酸化法で製造される銀−酸化物系の電気
接点材料として銀−酸化亜鉛−酸化錫系の電気接
点材料が提案されているが、この電気接点材料は
内部酸化時に結晶粒が粗大化したものであり、又
錫の含有量を2w／ｏ未満に抑えないと内部酸化
を充分になし得ないために、耐消耗性及び耐溶着
性が共に銀−酸化カドミウム系の電気接点材料よ
りも劣るものであつた。
尚、銀−酸化亜鉛系及び銀−酸化錫系の電気接
点材料も提案されたが、その性能は銀−酸化亜鉛
−酸化錫系の電気接点材料よりも劣るものであつ
た。
（発明の目的）
従つて、本発明の目的は、銀−酸化亜鉛−酸化
錫系の電気接点材料であつて、銀−酸化カドミウ
ム系の電気接点材料と同等又はこれを凌駕する性
能を有する電気接点材料を提供することにある。
（問題点を解決し、目的を達成する手段及び作
用）
本発明によれば、上記の問題点は、銀中に、４
−8w／ｏの亜鉛と５−2w／ｏの錫とを含有し、
更にゲルマニウム、鉄、ニツケル及びコバルトの
少くとも一種を0.01−0.5w／ｏ含有し、内部酸化
が施されたものであることを特徴とする、電気接
点材料により解決されると共に、上記の目的が達
成される。
本発明による電気接点材料において、亜鉛及び
錫の他に第３成分としてゲルマニウム、鉄、ニツ
ケル及びコバルトの内の少くとも一種が添加され
るのは、錫の配合量が2w／ｏを超過しても内部
酸化を可能にするためであり、又内部酸化を施し
た場合に酸化物結晶粒子が微細状態で且つマトリ
クスとしての銀中に均斉に分散された状態になす
ためであり、本発明による電気接点材料は酸化物
結晶粒子がこのような状態を呈しているがために
耐消耗性や耐溶着性に改善がもたらされる。尚、
上記の第３成分に関して0.01−0.5w／ｏなる量限
定が付されているのは、0.01w／ｏ未満では内部
酸化可能な錫の量を充分に高める効果がなく、又
0.5w／ｏ以上になしても内部酸化時の結晶粒子
の微細化に及ぼす影響が左程ないからである。
（実施例等）
下記の表に示される通りの各成分組成で金属を
常法により溶解させ、鋳造した後に、鑞付けし易
くなすために片面に銀を圧着し、圧延加工により
厚み1.0mmの板体になし、プレスで打抜いて7.5mm
径のものとなし、次いで酸素雰囲気中において
400−750℃の温度範囲で加熱して内部酸化処理し
た後に、銅合金製基体に鑞付けして電磁開閉器用
の各種の電気接点を得た。
これらの電気接点について、下記の試験条件で
耐消耗性及び耐溶着性を調べた。
試験条件
接点寸法 7.5mm（直径）×1.0mm（厚み）
電 圧 208V
電 流 165A
力 率 0.24
通電時間 20回／分
試験回数 50000回
結果は下記の表に示されている通りであり、本
発明による電気接点材料製の接点（No.１及びNo.
２）は従来品Ａ（No.３、第３成分を含有しない銀
−酸化亜鉛−酸化錫系の電気接点材料製の接点）
と比較する場合に酸化物結晶粒が微細であり、消
耗量が著しく少なく、又50000回の試験中に溶着
が一回も発生しないことが判明し、一方従来品Ｂ
（No.４、従来の典型的な銀−酸化カドミウム系電
気接点材料製の接点）と比較する場合にも酸化物
結晶粒において更に微細であり耐消耗性において
優れていることが判明した。
(Industrial Application Field) The present invention relates to electrical contact materials, and in particular to silver-zinc oxide electrical contact materials produced by an internal oxidation method, and more specifically, silver-zinc oxide suitable for use in electromagnetic switches. -Relating to tin oxide-based electrical contact materials. (Prior Art and its Problems) Generally, electrical contact materials must have excellent wear resistance and welding resistance. Conventionally, as an electrical contact material that almost satisfies these characteristics,
Silver-cadmium oxide based electrical contact materials have been widely used. However, since cadmium is harmful to the human body and easily evaporates during melting, silver-cadmium oxide based electrical contact materials are not preferred from the viewpoint of preventing pollution. Therefore, in recent years, a silver-zinc oxide-tin oxide-based electrical contact material has been proposed as a silver-oxide-based electrical contact material that does not contain cadmium and is manufactured by an internal oxidation method. The material has coarse grains during internal oxidation, and internal oxidation cannot be achieved sufficiently unless the tin content is kept below 2w/o, so both wear resistance and welding resistance are better than that of silver. -It was inferior to cadmium oxide-based electrical contact materials. Incidentally, silver-zinc oxide-based and silver-tin oxide-based electrical contact materials have also been proposed, but their performance was inferior to that of silver-zinc oxide-tin oxide-based electrical contact materials. (Object of the Invention) Therefore, the object of the present invention is to provide a silver-zinc oxide-tin oxide electrical contact material having performance equivalent to or superior to that of a silver-cadmium oxide electrical contact material. Our goal is to provide contact materials. (Means and effects for solving the problem and achieving the object) According to the present invention, the above problem can be solved by adding 4
Contains -8w/o zinc and 5-2w/o tin,
Furthermore, the above object is solved by an electrical contact material characterized by containing 0.01-0.5 w/o of at least one of germanium, iron, nickel and cobalt and being internally oxidized. achieved. In the electrical contact material according to the present invention, at least one of germanium, iron, nickel, and cobalt is added as a third component in addition to zinc and tin when the amount of tin exceeds 2w/o. This is to enable internal oxidation, and to make the oxide crystal particles in a fine state and uniformly dispersed in the silver matrix when internal oxidation is performed. Since the oxide crystal particles of the contact material exhibit this state, the wear resistance and welding resistance are improved. still,
The reason why the above-mentioned third component is limited to 0.01-0.5w/o is because if it is less than 0.01w/o, it is not effective to sufficiently increase the amount of tin that can be internally oxidized.
This is because even if it is 0.5 w/o or more, it will not have as much of an effect on the refinement of crystal grains during internal oxidation. (Examples, etc.) After melting and casting metals with the respective component compositions shown in the table below using a conventional method, silver was crimped on one side to make it easier to braze, and the metals were rolled to a thickness of 1.0 mm. No plate, punched out with a press to 7.5mm
diameter and then in an oxygen atmosphere.
After internal oxidation treatment by heating in the temperature range of 400-750°C, various electrical contacts for electromagnetic switches were obtained by brazing onto copper alloy substrates. These electrical contacts were examined for wear resistance and welding resistance under the following test conditions. Test conditions Contact dimensions: 7.5 mm (diameter) x 1.0 mm (thickness) Voltage: 208 V Current: 165 A Power factor: 0.24 Current application time: 20 times/min Number of tests: 50,000 times The results are shown in the table below, and the present invention Contacts made of electrical contact materials (No. 1 and No.
2) is conventional product A (No. 3, contact made of silver-zinc oxide-tin oxide based electrical contact material that does not contain a third component)
When compared with conventional product B, it was found that the oxide crystal grains were finer, the amount of wear was significantly smaller, and no welding occurred even once during 50,000 tests.
(No. 4, a contact made of a typical conventional silver-cadmium oxide electrical contact material), it was found that the oxide crystal grains were finer and the wear resistance was excellent.
【表】
（発明の効果）
本発明による電気接点材料は、銀−酸化亜鉛−
酸化錫系のものであるが、これに第３成分として
ゲルマニウム、鉄、ニツケル及びコバルトから選
ばれた少くとも一種類の物質が添加されているた
めに、錫の含有量を高めても内部酸化が可能とな
り、又内部酸化の結果生ずる酸化物結晶粒が微細
なものとなり耐消耗性や耐溶着性が著しく向上
し、殊に耐消耗性に関しては従来の銀−酸化カド
ミウム系電気接点材料に勝るものとなる。[Table] (Effects of the invention) The electrical contact material according to the present invention has silver-zinc oxide-
Although it is based on tin oxide, at least one substance selected from germanium, iron, nickel, and cobalt is added as a third component, so even if the tin content is increased, internal oxidation will not occur. In addition, the oxide crystal grains produced as a result of internal oxidation become finer, resulting in significantly improved wear resistance and welding resistance.Especially in terms of wear resistance, it is superior to conventional silver-cadmium oxide electrical contact materials. Become something.
Claims (1)
錫とを含有し、更にゲルマニウム、鉄、ニツケル
及びコバルトの少くとも一種を0.01−0.5w／ｏ含
有し、内部酸化が施されたものであることを特徴
とする、電気接点材料。1 Contains 4-8 w/o of zinc and 5-2 w/o of tin in silver, and further contains 0.01-0.5 w/o of at least one of germanium, iron, nickel, and cobalt to prevent internal oxidation. An electrical contact material characterized by being made of
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5857278A JPS54149322A (en) | 1978-05-17 | 1978-05-17 | Electric contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5857278A JPS54149322A (en) | 1978-05-17 | 1978-05-17 | Electric contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54149322A JPS54149322A (en) | 1979-11-22 |
| JPS6317898B2 true JPS6317898B2 (en) | 1988-04-15 |
Family
ID=13088146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5857278A Granted JPS54149322A (en) | 1978-05-17 | 1978-05-17 | Electric contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54149322A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58110639A (en) * | 1981-12-23 | 1983-07-01 | Tanaka Kikinzoku Kogyo Kk | Sliding contact material |
| JP2834550B2 (en) * | 1989-08-02 | 1998-12-09 | 古河電気工業株式会社 | Sliding contact material for small current region and method of manufacturing the same |
| CN103762099B (en) * | 2013-12-20 | 2016-06-22 | 宁波赛特勒电子有限公司 | A kind of money base composite oxides electric contact material and application thereof |
| CN119530593B (en) * | 2025-01-22 | 2025-04-11 | 乐清市长虹电工合金材料有限公司 | Silver-based tin oxide electric contact material and preparation method thereof |
-
1978
- 1978-05-17 JP JP5857278A patent/JPS54149322A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54149322A (en) | 1979-11-22 |
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