JPH08134564A - Silver-oxide type electrical contact element - Google Patents
Silver-oxide type electrical contact elementInfo
- Publication number
- JPH08134564A JPH08134564A JP6271439A JP27143994A JPH08134564A JP H08134564 A JPH08134564 A JP H08134564A JP 6271439 A JP6271439 A JP 6271439A JP 27143994 A JP27143994 A JP 27143994A JP H08134564 A JPH08134564 A JP H08134564A
- Authority
- JP
- Japan
- Prior art keywords
- electrical contact
- contact element
- silver
- resistance
- oxide
- 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.)
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Links
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、リレー、マグネットス
イッチ、ブレーカー等に用いられるＣｄを含まない電気
接点素子に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a Cd-free electric contact element used in relays, magnet switches, breakers and the like.
【０００２】[0002]
【従来の技術】従前のＡｇ−Ｃｄ系に代わるＣｄを含ま
ない銀−酸化物系の電気接点材料として、特開昭５０−
２８６９１号公報に記載されているようにＡｇ−ＳｎＯ
系、Ａｇ−ＺｎＯ系、Ａｇ−ＳｎＯ−Ｉｎ2 Ｏ3 系等が
知られている。2. Description of the Related Art As a silver-oxide type electrical contact material containing no Cd, which is an alternative to the conventional Ag-Cd type, Japanese Patent Application Laid-Open No. Sho-50-
Ag-SnO as described in 28691.
System, Ag-ZnO-based, Ag-SnO-In 2 O 3 system and the like are known.
【０００３】ところが、軽および中負荷の電気接点材料
としてのＡｇ−ＳｎＯ系、Ａｇ−ＺｎＯ系、Ａｇ−Ｓｎ
Ｏ−Ｉｎ2 Ｏ3 系は耐溶着性、耐アーク性においてＣｄ
含有系のものよりも劣るため、各種の添加元素を加える
ことによって電気接点材料としての特性を向上させるた
めの試みが行われている。例えば、特開昭５０−８２５
８８号公報においてはＺｎ、Ｐｂ、Ｂｉの添加が、ま
た、特開昭５７−１４３４５９号公報においては、Ｓ
ｅ、Ｍｎ、Ｎｉ、Ｆｅの添加が開示されている。However, Ag-SnO-based, Ag-ZnO-based, Ag-Sn as light and medium load electrical contact materials.
O-In 2 O 3 system is Cd in terms of welding resistance and arc resistance.
Since it is inferior to that of the containing system, attempts have been made to improve the characteristics as an electrical contact material by adding various additive elements. For example, JP-A-50-825
No. 88, the addition of Zn, Pb, and Bi, and in Japanese Patent Laid-Open No. 57-143459, S.
The addition of e, Mn, Ni, Fe is disclosed.
【０００４】さらに、特開昭５９−５３６４６号公報に
おいては、ＳｎとＳｂとを６〜１５重量％と多くして配
合して、耐久性、耐溶着性の向上を図ることが開示され
ており、また、特開昭６１−９１３３８号公報において
はＳｎを１１〜１５重量％という高含有量化することに
より耐消耗性、耐溶着性が向上することが開示されてい
る。Further, Japanese Patent Laid-Open No. 59-53646 discloses that Sn and Sb are mixed in a large amount of 6 to 15% by weight to improve durability and welding resistance. Further, Japanese Patent Application Laid-Open No. 61-91338 discloses that the wear resistance and the welding resistance are improved by increasing the Sn content of 11 to 15% by weight.
【０００５】この電気接点素子として要求される特性
は、接点機能の確実な再現性と長寿命化にあり、これら
を阻害する要因は、耐アークによる消耗、接触抵抗によ
る温度上昇、機械的な剥離と熱歪による素子の脱落と接
点部材同志の溶着にあり、これらの要因に対する耐性に
おける総合的な特性が電気接点素子の性能を決定する。
ところが、上記のＣｄを配合しない電気接点材料として
のＡｇ−Ｓｎ−Ｉｎ−Ｓｂ系は、重量％にしてＳｎが
０．０５〜１５％、Ｉｎが０．０５〜１１％、Ｓｂが
０．１〜６．２％とかなり広い金属組成範囲内で選択さ
れているが、軽および中負荷における耐溶着性、耐アー
ク性においてＡｇ−ＣｄＯ系の接点材料に劣る。 とこ
ろが、この従来のＡｇ−Ｓｎ−Ｉｎ−Ｓｂ系電気接点材
料は、内部酸化すると一応電気接点素子として使用でき
るが、表面酸化された酸化スズや酸化インジウムなどの
粒子が粗大化し、その分散状態も不均一であり、そのた
め、耐アーク性、耐溶着性が劣る、接触抵抗が不安定に
なるという問題がある。The characteristics required for this electric contact element are reliable reproducibility of contact function and long life. Factors that hinder these are wear due to arc resistance, temperature rise due to contact resistance, and mechanical peeling. There is a dropout of the element due to thermal strain and welding of the contact members, and the overall characteristics of resistance to these factors determine the performance of the electrical contact element.
However, in the Ag-Sn-In-Sb system as the electric contact material containing no Cd, Sn is 0.05 to 15%, In is 0.05 to 11%, and Sb is 0.1% by weight. Although it is selected within a fairly wide metal composition range of up to 6.2%, it is inferior to Ag-CdO type contact materials in welding resistance and arc resistance under light and medium loads. However, although this conventional Ag-Sn-In-Sb-based electrical contact material can be used as an electrical contact element by internal oxidation, the particles of surface-oxidized tin oxide, indium oxide, etc. become coarse and their dispersion state is also large. They are non-uniform, so that there are problems that arc resistance and welding resistance are poor, and contact resistance becomes unstable.
【０００６】[0006]
【発明が解決しようとする課題】本発明の目的は、Ａｇ
−Ｓｎ−Ｉｎ−Ｓｂ系の接点材料における耐溶着性、耐
消耗性、温度上昇及び接点素子の脱落の問題点を解消し
て、総合特性においてＡｇ−ＣｄＯ系の特性に近づいた
優れた電気接点材料を提供することにある。The object of the present invention is to provide Ag
-Sn-In-Sb-based contact material with excellent welding resistance, wear resistance, temperature rise, and contact element dropout problems, and excellent electrical contact with overall characteristics close to those of Ag-CdO-based To provide the material.
【０００７】[0007]
【課題を解決するための手段】本発明の電気接点材料
は、Ｓｎが４．０〜１０．０重量％、Ｉｎが４．０〜１
０．０重量％、Ｓｂが０．１〜１．５重量％、ＭｇとＡ
ｌとＺｒの中の１種又は２種以上が０．０１〜０．１重
量％、残部がＡｇからなる。In the electrical contact material of the present invention, Sn is 4.0 to 10.0% by weight and In is 4.0 to 1%.
0.0 wt%, Sb 0.1-1.5 wt%, Mg and A
One or more of l and Zr are 0.01 to 0.1% by weight, and the balance is Ag.
【０００８】この電気接点材料は、表面部近傍に１μｍ
以下の粒状の内部酸化物相が均一に存在する。This electric contact material has a thickness of 1 μm near the surface.
The following granular internal oxide phases are uniformly present.
【０００９】とくに、組成としてはＳｎが６．０〜７．
０％、Ｉｎが４．５〜７．０％、Ｓｂが０．３〜０．７
％、Ｍｇ、ＡｌあるいはＺｒ等の添加量が０．０２〜
０．０４％が好ましく、そのとき酸化物の微細化の効果
は大きい。In particular, the composition of Sn is 6.0 to 7.
0%, In 4.5-7.0%, Sb 0.3-0.7
%, The addition amount of Mg, Al, Zr, or the like is 0.02
0.04% is preferable, and at that time, the effect of refining the oxide is large.
【００１０】また、上記添加合金元素において、とく
に、ＡｌとＺｒを併用し、その際、その重量比率を１
８：１から２０：１の範囲にしたＡｌ−Ｚｒ合金の形に
して添加すると内部酸化物の微細化の効果が大きい。こ
れはＡｌは酸化し易く、Ａｇとの合金化が困難である
が、Ａｌ−Ｚｒという母合金にすればＡｇ合金化し易く
なるものと考えられる。Among the above-mentioned additional alloying elements, Al and Zr are used in combination, and the weight ratio thereof is 1
When added in the form of an Al-Zr alloy in the range of 8: 1 to 20: 1, the effect of refining the internal oxide is great. This is because Al easily oxidizes and it is difficult to form an alloy with Ag, but it is considered that a master alloy of Al-Zr facilitates Ag alloying.
【００１１】[0011]
【作用】本発明は、Ａｇ−Ｓｎ−Ｉｎ−Ｓｂ系合金に、
Ｍｇ、Ａｌ、Ｚｒを適量添加すると組成元素のＡｇ中へ
の拡散が適度に分散される現象を利用するもので、これ
によって、内部酸化による合金組成中の酸化物粒子の粗
大化が阻止される。The present invention relates to an Ag-Sn-In-Sb type alloy,
It utilizes the phenomenon that the addition of appropriate amounts of Mg, Al, and Zr appropriately diffuses the diffusion of the composition elements into Ag, and this prevents the coarsening of oxide particles in the alloy composition due to internal oxidation. .
【００１２】また、内部酸化により析出した酸化アルミ
ニウム、酸化ジルコニウム、酸化マグネシウムは、非常
に硬く融点が高いため、耐アーク性に優れて耐溶着性に
効果を発揮する。Further, since aluminum oxide, zirconium oxide, and magnesium oxide deposited by internal oxidation are very hard and have a high melting point, they are excellent in arc resistance and effective in welding resistance.
【００１３】[0013]
【実施例】表１に示す合金組成を有するインゴットを溶
解法により作成し、Ａｇ層としてＡｇ板を加熱圧着し、
ロール圧延後、φ６×１ｍｍ角の素子に打ち抜き、この
素子を圧力３気圧の酸素雰囲気中で内部酸化して電気接
点素子を得た。EXAMPLE An ingot having an alloy composition shown in Table 1 was prepared by a melting method, and an Ag plate was heat-pressed as an Ag layer,
After roll rolling, it was punched into a φ6 × 1 mm square element, and this element was internally oxidized in an oxygen atmosphere at a pressure of 3 atm to obtain an electrical contact element.
【００１４】この電気接点素子を表２に示す試験条件で
寿命テストを行った。A life test was conducted on this electric contact element under the test conditions shown in Table 2.
【００１５】なお、比較試料として、本発明の実施例に
おいてＭｇを添加しないものと、従来のＡｇ−Ｃｄ系及
び、Ａｇ−Ｃｄ−Ｓｎ−Ｉｎ系材料の電気接点素子を同
様な方法で作成し、実施例の場合と同様のテストを行っ
た結果を表１に示す。As comparative samples, electrical contact elements of the embodiment of the present invention to which Mg was not added and conventional Ag--Cd and Ag--Cd--Sn--In materials were prepared by the same method. Table 1 shows the results of the same test as in the example.
【００１６】同表に示すように、総合特性の面より本実
施例のものが優れていることがわかる。As shown in the table, it can be seen that the present example is superior in terms of overall characteristics.
【００１７】[0017]
【表１】 [Table 1]
【表２】 なお、実施例におけるＭｇの代わりにＡｌ：Ｚｒが１
９：１の重量比を有するＡｌ−Ｚｒ合金を同量試料した
が同様の結果を得た。また、ＭｇとＡｌ−Ｚｒ合金を
１：１の割合で、同量使用した結果も同様であった。[Table 2] Note that Al: Zr is 1 instead of Mg in the examples.
Similar amounts of Al-Zr alloy with a 9: 1 weight ratio were sampled with similar results. Moreover, the results of using the same amount of Mg and Al-Zr alloy at a ratio of 1: 1 were similar.
【００１８】実施例２ 実施例の本発明材を溶解し、実施例１と同じ製造方法
で、５φ×０．５及び４φ×０．５の接点を製作し、銅
リベット台金にロー付してリベット型接点試料とした。
この試料を従来の銀−酸化カドミウム系接点で、接点寸
法５φ×０．５のリベット型接点を使用している市販の
安全ブレーカに組込み電気用品規格に準じた短絡試験を
行った。試験条件は単極、直列試験共、ＡＣ１２０Ｖ、
１．６ＫＡ、力率０．７３であり、単極は責務Ｏ−ＣＯ
のみ、直列試験は責務Ｏ−ＣＯ−ＣＯ−・・・を溶着が
発生するまで実施した。この試験結果は表３に示す通り
である。Example 2 The material of the present invention of Example was melted, and 5φ × 0.5 and 4φ × 0.5 contacts were manufactured by the same manufacturing method as in Example 1, and then brazed to a copper rivet base metal. Was used as a rivet-type contact sample.
This sample was incorporated into a commercially available safety breaker using a conventional silver-cadmium oxide-based contact and a rivet-type contact having a contact size of 5φ × 0.5, and a short-circuit test according to electrical equipment standards was performed. The test conditions are AC120V for both single pole and series tests.
1.6KA, power factor 0.73, single pole is O-CO
Only, the series test was carried out until the welding occurred with the responsibility O-CO-CO -... The test results are shown in Table 3.
【００１９】[0019]
【表３】 [Table 3]
【００２０】[0020]
【発明の効果】本発明によって以下の効果を奏する。According to the present invention, the following effects can be obtained.
【００２１】（１）有害な公害元素であるＣｄを使用し
ないため、人体に悪影響しない、環境を破壊しない、公
害防止設備が不用になるという利点と共に、Ｃｄを使用
したＡｇ−ＣｄＯ系に匹敵する耐溶着性、耐消耗性、低
温度上昇（低接触抵抗）特性を有する接点材料が得られ
る。(1) Since Cd, which is a harmful pollution element, is not used, it is comparable to the Ag-CdO system using Cd, with the advantages that it does not adversely affect the human body, does not damage the environment, and requires no pollution prevention equipment. A contact material having welding resistance, wear resistance, and low temperature rise (low contact resistance) characteristics can be obtained.
【００２２】（２）アークによる消耗、接触抵抗による
温度上昇、機械的な剥離と熱歪による素子の脱落と、接
点部材同志との溶着等が抑えられ、安定した性能を有す
る電気接点素子が得られる。(2) The electrical contact element having stable performance can be obtained by suppressing the consumption due to the arc, the temperature rise due to the contact resistance, the detachment of the element due to the mechanical peeling and the thermal strain, and the welding with the contact members. To be
【００２３】（３）比較的低圧で内部酸化できるため、
その製造に格別の装置を必要とせず、従来の設備がその
まま使用できる。(3) Since the internal oxidation can be performed at a relatively low pressure,
No special equipment is required for its production, and conventional equipment can be used as it is.
Claims (2)
電気接点素子において、Ｓｎが４．０〜１０．０重量
％、Ｉｎが４．０〜１０．０重量％、Ｓｂが０．１〜
１．５重量％、ＭｇとＡｌとＺｒの中の１種又は２種以
上が０．０１〜０．１重量％、残部がＡｇからなること
を特徴とする銀−酸化物系電気接点素子。1. In an Ag-Sn-In-Sb-based silver-oxide electrical contact element, Sn is 4.0 to 10.0% by weight, In is 4.0 to 10.0% by weight, and Sb is 0. 1 ~
1. A silver-oxide-based electrical contact element comprising 1.5% by weight, 0.01 to 0.1% by weight of one or more of Mg, Al, and Zr, and the balance Ag.
上の中、ＡｌとＺｒとを含有せしめる場合において、Ａ
ｌとＺｒを重量比が１８：１〜２０：１の割合のＡｌ−
Ｚｒ合金としたことを特徴とする請求項１記載の電気接
点素子。2. In the case of containing Al and Zr in one or more of Mg, Al and Zr, A
l-Zr in a weight ratio of 18: 1 to 20: 1 Al-
The electrical contact element according to claim 1, wherein the electrical contact element is a Zr alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27143994A JP3751327B2 (en) | 1994-11-04 | 1994-11-04 | Silver-oxide based electrical contact element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27143994A JP3751327B2 (en) | 1994-11-04 | 1994-11-04 | Silver-oxide based electrical contact element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08134564A true JPH08134564A (en) | 1996-05-28 |
| JP3751327B2 JP3751327B2 (en) | 2006-03-01 |
Family
ID=17500044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27143994A Expired - Lifetime JP3751327B2 (en) | 1994-11-04 | 1994-11-04 | Silver-oxide based electrical contact element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3751327B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006241596A (en) * | 2005-02-04 | 2006-09-14 | Nippon Tungsten Co Ltd | Silver-metal oxide based contact material |
| CN100452259C (en) * | 2006-03-17 | 2009-01-14 | 乐百令 | Silver-nickel electric contact producing technology |
| JP2013077547A (en) * | 2011-09-15 | 2013-04-25 | Mitsubishi Materials Corp | Conductive film and manufacturing method thereof, and silver alloy sputtering target for conductive film formation and manufacturing method thereof |
-
1994
- 1994-11-04 JP JP27143994A patent/JP3751327B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006241596A (en) * | 2005-02-04 | 2006-09-14 | Nippon Tungsten Co Ltd | Silver-metal oxide based contact material |
| CN100452259C (en) * | 2006-03-17 | 2009-01-14 | 乐百令 | Silver-nickel electric contact producing technology |
| JP2013077547A (en) * | 2011-09-15 | 2013-04-25 | Mitsubishi Materials Corp | Conductive film and manufacturing method thereof, and silver alloy sputtering target for conductive film formation and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3751327B2 (en) | 2006-03-01 |
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