JPH0151530B2 - - Google Patents
Info
- Publication number
- JPH0151530B2 JPH0151530B2 JP55004386A JP438680A JPH0151530B2 JP H0151530 B2 JPH0151530 B2 JP H0151530B2 JP 55004386 A JP55004386 A JP 55004386A JP 438680 A JP438680 A JP 438680A JP H0151530 B2 JPH0151530 B2 JP H0151530B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- copper
- silver
- oxide
- electrical contact
- 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 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 11
- 239000002131 composite material Substances 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 229910052709 silver Inorganic materials 0.000 claims description 6
- 239000004332 silver Substances 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 229910052733 gallium Inorganic materials 0.000 claims description 3
- 229910052738 indium Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 229910052718 tin Inorganic materials 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 7
- 238000003466 welding Methods 0.000 description 7
- NEIHULKJZQTQKJ-UHFFFAOYSA-N [Cu].[Ag] Chemical compound [Cu].[Ag] NEIHULKJZQTQKJ-UHFFFAOYSA-N 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 229910000881 Cu alloy Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910000480 nickel oxide Inorganic materials 0.000 description 2
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910000428 cobalt oxide Inorganic materials 0.000 description 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 1
- LBFUKZWYPLNNJC-UHFFFAOYSA-N cobalt(ii,iii) oxide Chemical compound [Co]=O.O=[Co]O[Co]=O LBFUKZWYPLNNJC-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Landscapes
- Contacts (AREA)
Description
本発明は、電気接点材料、特に銀−銅系の複合
電気接点材料の改良に関するものである。
銀−銅合金の電気接点材料は、小電流域に於い
てはマイクロモーター用コミテーターやロータリ
ースイツチなどの摺動接点として用いられ、電流
の比較的大きい領域では接触力を大きくできると
ころに用いられている。
然し乍ら中電流域に於いては、接触抵抗が不安
定で、移転消耗が多いので、この点の解決が強く
望まれている。
そこで本発明者は上記要望に応えるべく鋭意攻
究したところ、満足できる銀−銅系の複合電気接
点材料を見い出したものである。
本発明の複合電気接点材料は、銀中に銅4.8〜
55重量％を添加しさらに銅よりも酸化物生成の標
準エネルギーの高いAl、Mg、Si、Zr、Zn、Ga、
Mn、Sn、In、Ti、Sb、Ni、Fe、Co、Crの少な
くとも１種の酸化物0.2〜10重量％を均一に分散
して成るものである。
本発明の複合電気接点材料に於いて、銀−銅合
金中にAl、Mg、Si、Zr、Zn、Ga、Mn、Sn、
In、Ti、Sb、Ni、Fe、Co、Crの少なくとも１種
の酸化物を均一に分散させる理由は、接点表面に
於ける酸化膜の形成を少なくし、低い接触抵抗で
開閉することができるようにする為と、耐溶着性
を向上させる為である。またその均一に分散させ
る量を0.2〜10重量％としたのは、0.2重量％未満
では酸化物を分散した効果、即ち低い接触抵抗で
の開閉と耐溶着性の向上が期待できず、10重量％
を超えると塑性加工ができず材料が割れを来すか
らである。
尚銀中に銅を0.1〜60重量％添加する理由は、
4.8重量％未満では直流電圧をかけたときの移転
消耗を抑える効果が十分で無いからであり、55重
量％を超えると塑性加工が難しく割れが発生する
からである。
次に本発明による複合電気接点材料の効果を明
瞭ならしめる為にその具体的な実施例と従来例に
よる電気接点について説明する。
実施例１〜32について下表左欄の成分組成の材
料を溶湯、噴霧し、直径１mm以下の粉粒体となし
た後、９気圧、600℃の酸素雰囲気中で内部酸化
して、複合粉末となし、次に400℃の還元性雰囲
気中で酸化銅を還元処理して、下表の酸化後の成
分組成の複合粉末となし、次いで圧縮、焼結、押
出によりワイヤーとなし、然る後リベツト加工し
て電気接点を作つた。
実施例 33
銀粉、銅粉および酸化ニツケル粉を銀80重量
％、銅10重量％、酸化ニツケル10重量％の成分組
成になるように秤量し、機械的に混合したのち圧
縮、焼結、押出によりワイヤーとなし、然る後リ
ベツト加工して電気接点を作つた。
実施例 34
銀粉、銅粉および酸化コバルト粉を銀80重量
％、銅10重量％、酸化コバルト10重量％の成分組
成になるように秤量し、機械的に混合したのち圧
縮、焼結、押出によりワイヤーとなし、然る後リ
ベツト加工して電気接点を作つた。
従来例 １
金92.5重量％、銅7.5重量％を溶解し、金型に
鋳造後押出、引抜加工してワイヤーとなした後、
リベツト加工して電気接点を作つた。
従来例 ２
銀85重量％、銅15重量％を溶解し、金型に鋳造
後押出、引抜加工してワイヤーとなした後、リベ
ツト加工して電気接点を作つた。
然して上記実施例１〜34の電気接点と従来例
１、２の電気接点を下記の試験条件にて開閉試験
を行い、溶着発生までの開閉数を測定し、また５
万回開閉後及び10万回開閉後の接触抵抗を測定
し、さらに溶着発生時の消耗量を測定したところ
下記の表１、表２に示すような結果を得た。
試験条件
電 圧 DC12V
突入電流 40A、定常電流 10A
開閉頻度 10回／分
固定接点（リベツト型）
頭部直径５mm×厚み１mm
足部直径2.5mm×長さ2.5mm
可動接点（リベツト型）
頭部直径４mm×厚み1.1mm
（接点上面は半径５mmの球面）
足部直径2.8mm×長さ1.6mm
The present invention relates to improvements in electrical contact materials, particularly silver-copper composite electrical contact materials. Silver-copper alloy electrical contact materials are used as sliding contacts in micromotor commutators and rotary switches in small current ranges, and are used where contact force can be increased in relatively large current ranges. There is. However, in the medium current range, the contact resistance is unstable and there is a lot of transfer wear, so a solution to this problem is strongly desired. Therefore, the inventors of the present invention conducted intensive research in order to meet the above-mentioned needs, and discovered a silver-copper composite electrical contact material that satisfies the needs. The composite electrical contact material of the present invention has copper in silver of 4.8~
Al, Mg, Si, Zr, Zn, Ga, which has a higher standard energy of oxide formation than copper by adding 55% by weight.
It is made by uniformly dispersing 0.2 to 10% by weight of an oxide of at least one of Mn, Sn, In, Ti, Sb, Ni, Fe, Co, and Cr. In the composite electrical contact material of the present invention, Al, Mg, Si, Zr, Zn, Ga, Mn, Sn,
The reason for uniformly dispersing at least one oxide of In, Ti, Sb, Ni, Fe, Co, and Cr is to reduce the formation of an oxide film on the contact surface, which enables switching with low contact resistance. This is to improve the welding resistance. The reason why the amount to be uniformly dispersed was set to 0.2 to 10% by weight is because if it is less than 0.2% by weight, the effect of dispersing the oxide, that is, the opening/closing with low contact resistance and the improvement of welding resistance cannot be expected. %
This is because if it exceeds this, plastic working will not be possible and the material will crack. The reason for adding 0.1 to 60% by weight of copper to silver is
This is because if it is less than 4.8% by weight, the effect of suppressing transfer wear when DC voltage is applied is insufficient, and if it exceeds 55% by weight, plastic working becomes difficult and cracks occur. Next, in order to clarify the effects of the composite electrical contact material according to the present invention, specific examples thereof and conventional electrical contacts will be described. Regarding Examples 1 to 32, materials having the composition shown in the left column of the table below were melted and sprayed to form powder with a diameter of 1 mm or less, and then internally oxidized in an oxygen atmosphere at 9 atm and 600°C to form composite powder. Then, the copper oxide is reduced in a reducing atmosphere at 400℃ to form a composite powder having the composition after oxidation as shown in the table below, and then it is formed into a wire by compression, sintering, and extrusion. I used rivets to make electrical contacts. Example 33 Silver powder, copper powder, and nickel oxide powder were weighed to have a composition of 80% by weight of silver, 10% by weight of copper, and 10% by weight of nickel oxide, mixed mechanically, and then compressed, sintered, and extruded. I cut it into wire and then processed it with rivets to make electrical contacts. Example 34 Silver powder, copper powder, and cobalt oxide powder were weighed to have a composition of 80% by weight of silver, 10% by weight of copper, and 10% by weight of cobalt oxide, mixed mechanically, and then compressed, sintered, and extruded. I cut it into wire and then processed it with rivets to make electrical contacts. Conventional example 1 92.5% by weight of gold and 7.5% by weight of copper were melted, cast into a mold, extruded and drawn to form a wire,
I used rivets to make electrical contacts. Conventional Example 2 85% by weight of silver and 15% by weight of copper were melted, cast into a mold, extruded and drawn to form a wire, and then riveted to make electrical contacts. However, the electrical contacts of Examples 1 to 34 and the electrical contacts of Conventional Examples 1 and 2 were subjected to opening/closing tests under the following test conditions, and the number of openings and closings until welding occurred was measured.
The contact resistance was measured after opening and closing 10,000 times and after opening and closing 100,000 times, and the amount of wear when welding occurred was measured, and the results shown in Tables 1 and 2 below were obtained. Test conditions Voltage DC12V Inrush current 40A, steady current 10A Opening/closing frequency 10 times/min Fixed contact (rivet type) Head diameter 5mm x thickness 1mm Foot diameter 2.5mm x length 2.5mm Movable contact (rivet type) Head diameter 4mm x thickness 1.1mm (Top surface of contact is spherical with radius 5mm) Foot diameter 2.8mm x length 1.6mm
【表】【table】
【表】【table】
【表】
上記の表の数値で明らかなように本発明の実施
例の複合電気接点材料にて作つた電気接点は、従
来例のそれに比し溶着発生までの開閉回数が多
く、耐溶着性が向上している。また接触抵抗は開
閉回数が増えてもあまり変わりなく安定してい
る。さらに消耗量については移転が少なく、ロツ
キング等の問題の発生が少なかつた。
以上詳記した通り本発明による複合電気接点材
料は、従来の銀−銅合金の電気接点材料に比し低
い接触抵抗で開閉することができ、また均一に酸
化物が分散しているので耐溶着性に優れていて、
従来の銀−銅合金の電気接点材料にとつて代わる
ことのできる画期的なものと言える。[Table] As is clear from the values in the table above, the electrical contacts made with the composite electrical contact material of the embodiment of the present invention have a greater number of openings and closings before welding occurs than those of the conventional example, and have poor welding resistance. It's improving. Furthermore, the contact resistance remains stable and does not change much even if the number of openings and closings increases. Furthermore, with regard to consumption, there was little transfer, and problems such as locking were less likely to occur. As detailed above, the composite electrical contact material according to the present invention can open and close with lower contact resistance than conventional silver-copper alloy electrical contact materials, and is resistant to welding because the oxide is uniformly dispersed. Excellent in sex,
It can be said to be an epoch-making product that can replace the conventional silver-copper alloy electrical contact material.
Claims (1)
よりも酸化物生成の標準エネルギーの高いAl、
Mg、Si、Zr、Zn、Ga、Mn、Sn、In、Ti、Sb、
Ni、Fe、Co、Crの少なくとも１種の酸化物0.2〜
10重量％を均一に分散して成る複合電気接点材
料。1 Added 4.8 to 55% by weight of copper to silver, and further added Al, which has a higher standard energy for oxide formation than copper,
Mg, Si, Zr, Zn, Ga, Mn, Sn, In, Ti, Sb,
At least one oxide of Ni, Fe, Co, Cr 0.2~
Composite electrical contact material made by uniformly dispersing 10% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP438680A JPS56102536A (en) | 1980-01-18 | 1980-01-18 | Composite electrical contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP438680A JPS56102536A (en) | 1980-01-18 | 1980-01-18 | Composite electrical contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56102536A JPS56102536A (en) | 1981-08-17 |
| JPH0151530B2 true JPH0151530B2 (en) | 1989-11-06 |
Family
ID=11582914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP438680A Granted JPS56102536A (en) | 1980-01-18 | 1980-01-18 | Composite electrical contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56102536A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105220003A (en) * | 2015-10-25 | 2016-01-06 | 无棣向上机械设计服务有限公司 | A kind of high temperature resistant silver alloy and preparation method thereof |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3146972A1 (en) * | 1981-11-26 | 1983-06-01 | Siemens AG, 1000 Berlin und 8000 München | METHOD FOR PRODUCING MOLDED PARTS FROM CADMIUM-FREE SILVER METAL OXIDE COMPOSITIONS FOR ELECTRICAL CONTACTS |
| BR9102714A (en) * | 1990-06-28 | 1992-02-04 | Sumitomo Metal Mining Co | COMPOSITE MATERIALS OF SILVER-OR ALLOY SILVER COPPER-METAL OXIDE AND PRODUCTION PROCESS OF THE SAME |
| DE19544697C1 (en) * | 1995-11-30 | 1996-07-11 | Abb Research Ltd | Metal-ceramic composite material used e.g. in high temp.superconductors |
| JP2008303428A (en) * | 2007-06-07 | 2008-12-18 | Tanaka Kikinzoku Kogyo Kk | Method for manufacturing electric contact material, electric contact material, and thermal fuse |
| JP5342931B2 (en) * | 2009-06-05 | 2013-11-13 | マブチモーター株式会社 | Sliding contact material, clad composite material and motor |
| CN103725916B (en) * | 2013-12-19 | 2015-12-09 | 北海鑫利坤金属材料科技开发有限公司 | A kind of anti-tarnishing silver alloy |
| WO2019181649A1 (en) * | 2018-03-19 | 2019-09-26 | 日本電産株式会社 | Electrical contact powder, electrical contact material, electrical contact, and method for producing electrical contact powder |
| WO2019181650A1 (en) * | 2018-03-19 | 2019-09-26 | 日本電産株式会社 | Electrical contact powder, electrical contact material, electrical contact, and method for producing electrical contact powder |
-
1980
- 1980-01-18 JP JP438680A patent/JPS56102536A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105220003A (en) * | 2015-10-25 | 2016-01-06 | 无棣向上机械设计服务有限公司 | A kind of high temperature resistant silver alloy and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56102536A (en) | 1981-08-17 |
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