JP3245690B2 - Ag-Sn-In alloy internal oxidation electrical contact material - Google Patents
Ag-Sn-In alloy internal oxidation electrical contact materialInfo
- Publication number
- JP3245690B2 JP3245690B2 JP32457892A JP32457892A JP3245690B2 JP 3245690 B2 JP3245690 B2 JP 3245690B2 JP 32457892 A JP32457892 A JP 32457892A JP 32457892 A JP32457892 A JP 32457892A JP 3245690 B2 JP3245690 B2 JP 3245690B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- alloy
- contact material
- electrical contact
- 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 - Lifetime
Links
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- Powder Metallurgy (AREA)
- Manufacture Of Switches (AREA)
- Contacts (AREA)
- Conductive Materials (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、開閉器や遮断器，接続
器等の電気機器に広く用いることができる電気接点用材
料、特にＡｇ−Ｓｎ−Ｉｎ系内部酸化電気接点材料に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material for electrical contacts which can be widely used for electrical devices such as switches, circuit breakers and connectors, and more particularly to an Ag-Sn-In type internal oxidized electrical contact material. .
【０００２】[0002]
【従来の技術】この種の電気接点材料としては、Ａｇ−
Ｃｄ合金を内部酸化したものが先ず開発された。しか
し、公害防止のためにＣｄの使用を避けることが望ま
れ、Ａｇ−Ｓｎ合金を内部酸化したものが近時は広く使
われている。Ａｇ合金中のＳｎを均一に分散して内部酸
化することは誠に難しく、このためＡｇ−Ｓｎ合金中に
Ｉｎを加え、このＡｇ−Ｓｎ−Ｉｎ系合金を内部酸化し
た電気接点材料が使われている。2. Description of the Related Art As this kind of electric contact material, Ag-
An internally oxidized version of a Cd alloy was first developed. However, it is desired to avoid the use of Cd to prevent pollution, and a material obtained by internally oxidizing an Ag-Sn alloy has recently been widely used. It is extremely difficult to uniformly disperse and internally oxidize Sn in an Ag alloy. Therefore, In is added to the Ag-Sn alloy, and an electrical contact material obtained by internally oxidizing the Ag-Sn-In alloy is used. I have.
【０００３】このＡｇ−Ｓｎ−Ｉｎ系合金を内部酸化し
た電気接点材料は、電気接点としての諸特性に優れ、Ａ
ｇ−Ｃｄ酸化物電気接点材料に優るとも劣らないもので
あるが、接触抵抗の安定性の面ではいま一歩の改良が期
待されるところである。An electrical contact material obtained by internally oxidizing this Ag—Sn—In alloy has excellent characteristics as an electrical contact.
Although it is not inferior to g-Cd oxide electrical contact materials, a further improvement in contact resistance stability is expected.
【０００４】[0004]
【発明が解決しようとする課題】そこで、本発明は使用
寿命中に終止安定した接触抵抗を有するＡｇ−Ｓｎ−Ｉ
ｎ系合金の内部酸化電気接点材料を提供することを目的
としてなされたものである。SUMMARY OF THE INVENTION Accordingly, the present invention provides an Ag-Sn-I having a stable contact resistance during the service life.
The purpose of the present invention is to provide an internal oxidized electrical contact material of an n-type alloy.
【０００５】[0005]
【課題を解決するための手段】本発明では、３〜１５重
量％のＳｎと０．１〜７重量％のＩｎとを含むＡｇ合金
に０．１〜７重量％のＴｌ（タリウム）を添加して、こ
の合金を内部酸化した。ＴｌはＣｄの如き公害性を持た
ず、しかもＩｎのみを使用した場合よりも遥かに均一に
ＳｎをＡｇ中で内部酸化し得ることが見出された。According to the present invention, 0.1 to 7% by weight of Tl (thallium) is added to an Ag alloy containing 3 to 15% by weight of Sn and 0.1 to 7% by weight of In. This alloy was internally oxidized. It has been found that Tl does not have the pollutant properties of Cd, and that it can oxidize Sn in Ag much more uniformly than using In alone.
【０００６】即ち、Ｉｎのみを用いた場合には、合金の
表面に「かわけ」と呼ばれる脱酸化物層が認められるこ
とがあるのに対して、ＴｌをＩｎと共に用いた場合に
は、かかる不都合が生じない。また、Ｉｎのみを用いた
場合には、合金組織中にＡｇ粒界が認められるのに対し
て、ＴｌをＩｎと共に用いた場合には、Ａｇ粒界はほと
んど認められず、Ｓｎ酸化物が合金の全般にわたって均
一に析出酸化するのが認められた。[0006] That is, when only In is used, a deoxidized layer called "separation" may be recognized on the surface of the alloy, whereas when Tl is used together with In, such a layer is not formed. No inconvenience occurs. When only In was used, Ag grain boundaries were found in the alloy structure, whereas when Tl was used together with In, almost no Ag grain boundaries were found, and Sn oxide was not used. It was observed that the precipitate was oxidized uniformly over the entire area.
【０００７】また、Ｔｌ酸化物はＣｄ酸化物に類似した
融点と蒸気点を有するために、Ａｇ−Ｃｄ酸化物接点材
料の場合と同様に、Ｔｌ酸化物を含んだＡｇ−Ｓｎ酸化
物電気接点材料はその接点面が自己浄化される。このこ
とは、接点の接触抵抗の安定化に大きく寄与するもので
ある。Since the Tl oxide has a melting point and a vapor point similar to those of the Cd oxide, the Ag-Sn oxide electric contact containing the Tl oxide is used similarly to the case of the Ag-Cd oxide contact material. The material is self-cleaning at its contact surfaces. This greatly contributes to stabilization of the contact resistance of the contact.
【０００８】この発明のＡｇ合金に使われるＳｎの下限
値の３重量％は、得られる接点材料を耐火性にするため
に必要な量であり、その上限値の１５重量％は、得られ
る接点材料の加工性が極端に損なわれないようにするた
めの量である。The lower limit of 3% by weight of Sn used in the Ag alloy of the present invention is an amount necessary for making the obtained contact material fire resistant, and the upper limit of 15% by weight of the obtained contact material is 15% by weight. This is an amount for preventing the workability of the material from being extremely impaired.
【０００９】Ｓｎの内部酸化を助成するためには、Ｉｎ
の量は最低で０．１重量％であり、その量が７重量％を
超えると材料を脆くしてしまう。また、Ｔｌの下限値の
０．１重量％は上記したＳｎのＡｇ中での内部酸化を促
進するためと、接点面の自己浄化性を保証するための最
低量であり、その上限値の７重量％は得られる接点材料
に加工性を残すための量である。なお、上記の重量％の
ＳｎとＩｎとＴｌはそれぞれＡｇと固溶し得る範囲内に
ある。In order to promote the internal oxidation of Sn, In
Is at least 0.1% by weight, and if it exceeds 7% by weight, the material becomes brittle. The lower limit of 0.1% by weight of Tl is the minimum amount for promoting the internal oxidation of Sn in Ag and ensuring the self-purifying property of the contact surface. The weight% is an amount for leaving workability in the obtained contact material. In addition, Sn, In, and Tl in the above-mentioned weight% are each within a range that can be dissolved with Ag.
【００１０】また、従来行なわれていた通り、合金の結
晶組織の調整のために、Ａｇ合金中に更にＦｅ族元素金
属のＦｅ，Ｃｏ，Ｎｉの一或は複数を０．００１〜１重
量％含有せしめてもよい。Further, as has conventionally been done, one or more of Fe-group element metals Fe, Co and Ni are added to the Ag alloy in an amount of 0.001 to 1% by weight in order to adjust the crystal structure of the alloy. May be included.
【００１１】[0011]
（１）Ａｇ−Ｓｎ６重量％−Ｉｎ３重量％−Ｔｌ１重量
％ （２）Ａｇ−Ｓｎ６重量％−Ｉｎ３重量％−Ｔｌ２重量
％−Ｎｉ０．２重量％ （３）Ａｇ−Ｓｎ６重量％−Ｉｎ２重量％ （４）Ａｇ−Ｃｄ１０重量％(1) Ag-Sn6 wt% -In3 wt% -T11 wt% (2) Ag-Sn6 wt% -In3 wt% -T12 wt% -Ni0.2 wt% (3) Ag-Sn6 wt% -In2 wt% (4) Ag-Cd 10% by weight
【００１２】上記の本発明の合金（１）と（２）、及び
対比のための合金（３）と（４）の組成分をそれぞれ高
周波溶解炉にて溶解してインゴットにした。このインゴ
ットの表面を機械切削して皮剥きした後、この皮剥きさ
れた面に純Ａｇ板を加熱プレスで圧着した。これを圧延
率３０％毎に約６００℃で焼鈍して、２ｍｍの板状に圧
延した。この板を７００℃，７ａｔｍの酸素雰囲気中で
内部酸化した。The alloys (1) and (2) of the present invention and the alloys (3) and (4) for comparison were each melted in an induction melting furnace to form an ingot. After the surface of the ingot was mechanically cut and peeled, a pure Ag plate was pressure-bonded to the peeled surface by a hot press. This was annealed at about 600 ° C. every 30% of the rolling ratio and rolled into a 2 mm plate. This plate was internally oxidized in an oxygen atmosphere at 700 ° C. and 7 atm.
【００１３】この板を６ｍｍ径のポンチで打抜いて、外
径６ｍｍ×厚さ２ｍｍの上記した合金（１），（２），
（３），（４）にそれぞれ対応する接点試料（１），
（２），（３），（４）を得た。This plate is punched with a punch having a diameter of 6 mm, and the above-mentioned alloys (1), (2),
Contact samples corresponding to (3) and (4) (1),
(2), (3) and (4) were obtained.
【００１４】これら試料をそれぞれの接触抵抗（ｍΩ）
を測定するために、マグネットスイッチに取付け、ＪＩ
Ｓ−ＡＣ３に基づき次の条件にてテストした。なお、測
定値は、電源側及び負荷個端子部をｍΩメーターにて測
定して得たものである。 電 圧：ＡＣ２００Ｖ（投入） ３５Ｖ（遮断） 電 流：１５０Ａ（投入） ２５Ａ（遮断） 負荷リアクター：ｐｆ＝０．３５ 頻 度：６０回／分 回 数：２，０００，０００回 接点圧力：１００ｇ その結果は、表１の通りであった。[0014] Each of these samples was contact resistance (mΩ)
Attached to a magnet switch to measure
The test was performed under the following conditions based on S-AC3. In addition, the measured value was obtained by measuring the power supply side and the load terminal section with an mΩ meter. Voltage: AC200V (input) 35V (cutoff) Current: 150A (input) 25A (cutoff) Load reactor: pf = 0.35 Frequency: 60 times / min Number of times: 2,000,000 times Contact pressure: 100 g The results are as shown in Table 1.
【００１５】[0015]
【表１】 [Table 1]
【００１６】[0016]
【発明の効果】上記のテスト結果から明らかな通り、本
発明になる接点材料は、優秀な在来の接点材料と比べて
も接触抵抗が極めて安定している顕著な効果が認められ
る。As is clear from the above test results, the contact material according to the present invention has a remarkable effect that the contact resistance is extremely stable as compared with the excellent conventional contact material.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭62−199738（ＪＰ，Ａ) 特開 昭58−104144（ＪＰ，Ａ) 特開 昭58−104145（ＪＰ，Ａ) 特開 昭54−147479（ＪＰ，Ａ) 特開 平６−136473（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C22C 5/06 - 5/08 H01B 1/02 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-199738 (JP, A) JP-A-58-104144 (JP, A) JP-A-58-104145 (JP, A) JP-A-54-1997 147479 (JP, A) JP-A-6-136473 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) C22C 5/06-5/08 H01B 1/02
Claims (2)
のＩｎと０．１〜７重量％のＴｌと残部がＡｇからなる
溶解合金を内部酸化したＡｇ−Ｓｎ−Ｉｎ系合金の内部
酸化電気接点材料。1. The method according to claim 1, wherein said Sn is present in an amount of 3 to 15% by weight and 0.1 to 7% by weight.
An internal oxidized electrical contact material of an Ag—Sn—In alloy in which a molten alloy composed of In, 0.1 to 7% by weight of Tl and the balance of Ag is internally oxidized.
のＩｎと０．１〜７重量％のＴｌと０．００１〜１重量
％のＦｅ族元素金属のＦｅ，Ｃｏ，Ｎｉの一或いは複数
と残部がＡｇからなる溶解合金を内部酸化したＡｇ−Ｓ
ｎ−Ｉｎ系合金の内部酸化電気接点材料。2. The composition according to claim 1, wherein said Sn is present in an amount of from 3 to 15% by weight and 0.1 to 7% by weight.
Ag-S in which 0.1 to 7% by weight of Tl and 0.001 to 1% by weight of a molten alloy composed of one or more of Fe-group element metals Fe, Co, and Ni and the balance being Ag are used.
Internal oxidation electrical contact material of n-In alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32457892A JP3245690B2 (en) | 1992-10-21 | 1992-10-21 | Ag-Sn-In alloy internal oxidation electrical contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32457892A JP3245690B2 (en) | 1992-10-21 | 1992-10-21 | Ag-Sn-In alloy internal oxidation electrical contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06136472A JPH06136472A (en) | 1994-05-17 |
| JP3245690B2 true JP3245690B2 (en) | 2002-01-15 |
Family
ID=18167386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32457892A Expired - Lifetime JP3245690B2 (en) | 1992-10-21 | 1992-10-21 | Ag-Sn-In alloy internal oxidation electrical contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3245690B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7267187B2 (en) | 2003-10-24 | 2007-09-11 | Smith International, Inc. | Braze alloy and method of use for drilling applications |
| JP7327476B2 (en) * | 2019-05-31 | 2023-08-16 | オムロン株式会社 | Contact material containing Ag alloy as main component, contact using said contact material, and electrical equipment |
| JP2022077654A (en) * | 2020-11-12 | 2022-05-24 | オムロン株式会社 | MATERIAL FOR CONTACT HAVING Ag ALLOY AS MAIN COMPONENT, CONTACT USING THE MATERIAL FOR CONTACT, AND ELECTRIC APPLIANCE |
-
1992
- 1992-10-21 JP JP32457892A patent/JP3245690B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06136472A (en) | 1994-05-17 |
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