JPS5921939B2 - Electrical contact materials for breakers - Google Patents
Electrical contact materials for breakersInfo
- Publication number
- JPS5921939B2 JPS5921939B2 JP50097320A JP9732075A JPS5921939B2 JP S5921939 B2 JPS5921939 B2 JP S5921939B2 JP 50097320 A JP50097320 A JP 50097320A JP 9732075 A JP9732075 A JP 9732075A JP S5921939 B2 JPS5921939 B2 JP S5921939B2
- Authority
- JP
- Japan
- Prior art keywords
- electrical contact
- silver
- indium
- tin
- breaker
- 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
Landscapes
- Manufacture Of Switches (AREA)
- Contacts (AREA)
- Conductive Materials (AREA)
Description
【発明の詳細な説明】
本発明は、内部酸化法によつて製造される銀一酸化物系
の電気接点材料、特にプレーカー用の電気接点に適する
銀−酸化インジウム−酸化錫一酸フ 化カルシウム系、
銀一酸化インジウム−酸化錫一酸化ランタン系、銀−酸
化インジウム−酸化錫一酸化ジルコニウム系の電気接点
材料に係る。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a silver monoxide-based electrical contact material manufactured by an internal oxidation method, particularly a silver-indium oxide-tin oxide monoacid fluoride material suitable for an electrical contact for a breaker. Calcium based,
It relates to electrical contact materials based on silver-indium monoxide-tin oxide and lanthanum monoxide, and silver-indium oxide-tin oxide and zirconium monoxide.
従来から耐溶着性、耐消耗性等に優れた銀一酸化物系の
プレーカー用電気接点材料としては、銀夕 一酸化カド
ミウム系のプレーカー用電気接点材料が広く用いられて
きた。しかしながらカドミウムは人体に有害な物質であ
り、溶解中蒸発しやすいため設備が必要となク、その使
用は望ましいものではない。BACKGROUND ART Conventionally, silver oxide and cadmium monoxide-based electrical contact materials for breaker have been widely used as silver monoxide-based breaker electrical contact materials that have excellent welding resistance, abrasion resistance, and the like. However, cadmium is a substance harmful to the human body and tends to evaporate during dissolution, requiring equipment, making its use undesirable.
一方、銀−酸９ 化物系のブレーカー用電気接点材料の
中には、カドミウムを用いないブレーカー用電気接点材
料として、既に銀−酸化インジウム−酸化錫系のプレー
カー用電気接点材料があるが、この銀−酸化インジウム
−酸化錫系のブレーカー用電気接点材料５ は大電流域
において、耐消耗性の点で満足できるものの耐溶着性の
点で銀−酸化カドミウム系のプレーカー用電気接点材料
に劣わ、その使用範囲、使用条件がかなわ限定される。
このような事からカドミウムを用いることなく良好な耐
溶着性を有ｏ するプレーカー用電気接点材料の出現が
強く要望されている。そこで本発明者は、前記要望を満
たすことのできるブレーカー用電気接点材料を開発すべ
く鋭意攻究の結果、亀甲状の組織内部に均一に分散した
５ 針状の酸化物粒子を有し優れた耐溶着性を有するブ
レーカー用電気接点材料として、銀にインジウムと錫と
更にカルシウム、ランタン、ジルコニウムのうちいずれ
か１種とを共添加した合金を内部酸化してなるブレーカ
一用電気接点材料を見い出したのである。On the other hand, among silver-acid nonagene-based electrical contact materials for breakers, there is already a silver-indium oxide-tin oxide-based electrical contact material for breakers that does not use cadmium. Although this silver-indium oxide-tin oxide electrical contact material 5 for breakers is satisfactory in terms of wear resistance in a large current range, it is superior to silver-cadmium oxide based electrical contact materials for breakers in terms of welding resistance. Inferior, its range of use and conditions of use are quite limited.
For these reasons, there is a strong demand for an electrical contact material for breaker that does not use cadmium and has good welding resistance. Therefore, the inventor of the present invention made an earnest effort to develop an electrical contact material for a breaker that can meet the above requirements, and as a result, the present inventor found that it has excellent 5-acicular oxide particles uniformly dispersed inside the hexagonal structure. We have discovered an electrical contact material for breakers that has welding resistance and is made by internally oxidizing an alloy in which silver is co-added with indium, tin, and one of calcium, lanthanum, and zirconium. It was.
本発明のブレーカ一用電気接点材料は、銀中に毒性の少
ないインジウムを２〜１０Ｗ／ｏと、錫を２〜７Ｓと、
更にカルシウム、ランタン、ジルコニウムのうちいずれ
か１種のみを１〜３Ｗ／Ｏとを溶解せしめて銀−インジ
ウム−錫−ランタン系合金、銀−インジウム−錫−ジル
コニウム系合金、銀一インジウム一錫−カルシウム系合
金とし、しかる後にこれを酸化性雰囲気で加熱すること
によつて内部酸化せしめたものである。The electrical contact material for a breaker of the present invention includes 2 to 10 W/o of less toxic indium in silver and 2 to 7 S of tin.
Further, by dissolving only one of calcium, lanthanum, and zirconium with 1 to 3 W/O, silver-indium-tin-lanthanum alloy, silver-indium-tin-zirconium alloy, silver-indium-tin- A calcium-based alloy is then internally oxidized by heating it in an oxidizing atmosphere.
銀中にインジウムと錫と更にランタン、カルシウム、ジ
ルコニウムの内のいずれか１種のみとを共添加すること
によつて得られる最も大きな効果は、ブレーカ一用とし
て電気接点材料の耐溶着性が改善されることである。The most significant effect obtained by co-adding indium, tin, and one of lanthanum, calcium, and zirconium to silver is that it improves the welding resistance of electrical contact materials used as breakers. It is to be done.
単に銀とインジウムと錫とを用いた銀一酸化インジウム
一酸化錫系のブレーカ一用電気接点材料は、錫とインジ
ウムの一部が粒界に他の一部が粒内に針状となつて析出
するため銀一酸化カドミウム系のブレーカ一用電気接点
材料に比べ耐溶着性が充分でなくプレーカ一用電気接点
材料としては不適当である。即ち、銀中にインジウム２
〜１０ＶＩ／ｏと、錫２〜７罵ｔ及びランタン、カルシ
ウム、ジルコニウムのうちのいずれか１種のみ１〜３Ｗ
／ｏを共添加することによる内部酸化時の相剰作用によ
つて酸化インジウム、酸化錫の粒子を亀甲状に粒界に析
出させ、且つその粒界内部に針状の酸化物粒子を均一に
分散する結果、銀一酸化インジウム一酸化錫のプレーカ
一用電気接点材料に比べ、ブレーカ一用電気接点材料と
して耐溶着性に優れたものとなり、耐溶着効果を発揮し
得るものである。次に前記の如く成分組成範囲を限定し
た理由について説明する。A silver-indium-indium-tin-monoxide-based electrical contact material for a breaker simply uses silver, indium, and tin, with some of the tin and indium forming needles at the grain boundaries and the other part forming needles within the grains. Because of the precipitation, it has insufficient welding resistance compared to silver cadmium monoxide-based electrical contact materials for breakers, making it unsuitable as an electrical contact material for breakers. That is, indium 2 in silver
~10VI/o, 2~7% of tin, and 1~3W of any one of lanthanum, calcium, and zirconium
Co-addition of /o causes particles of indium oxide and tin oxide to precipitate at the grain boundaries in a hexagonal shape due to the additive effect during internal oxidation, and acicular oxide particles are uniformly formed inside the grain boundaries. As a result of the dispersion, it becomes an electrical contact material for a breaker which has superior welding resistance compared to an electrical contact material for a breaker made of silver indium tin monoxide, and can exhibit an anti-welding effect. Next, the reason for limiting the component composition range as described above will be explained.
インジウムを２Ｗ／ｏ以下にする ５と純銀の性質とあ
まり変わらず、耐溶着性の点で、インジウムの効果が著
しく減少し、１０Ｓ以上ではインジウムの内部酸化が困
難となるから、インジウム２〜１０Ｗ／ｏが好適である
。錫を２Ｗ／０以下にすると粒界析出物が減少し耐溶着
性が劣下し、７Ｗ／ｏ以上にすると内部酸化が困難で又
加工性が悪くなるから錫２〜７Ｓが好適である。又ラン
タン、カルシウム、ジルコニウムのいずれか１種が１Ｖ
Ｉ／ｏ以下では、酸化物粒子を粒界に析出させることが
できなく、ランタン、カルシウム、ジルコニウムのいず
れか１種が３Ｓ以上では結晶粒内が酸化しにくくなり内
部酸化に長時間を要し、又加工が困難になるから１〜３
Ｗ／ｏが好適である。肯、不純物としてガリウム、マゲ
ネシウム、ゲルマニウム、コバルト、鉄、ニツケル、ア
ルミニウム、シリコン、銅、亜鉛のうち少くとも１種を
含み、その総含有量が０．７Ｖ１／ｏ以上になると適度
に粒内に分散した酸化物粒子を破壊したり、又その酸化
物粒子を極端に微細化したシしてインジウムと錫と更に
カルシウム、ランタン、ジルコニウムのうちのいずれか
１種との相乗効果を低下させ、耐溶着効果に悪影響を与
えるので好ましくない。Make indium 2 W/o or less. 5 is not much different from the properties of pure silver. In terms of welding resistance, the effect of indium is significantly reduced, and if it exceeds 10S, internal oxidation of indium becomes difficult, so indium 2 to 10W /o is preferred. If the tin content is less than 2 W/0, grain boundary precipitates will decrease and the welding resistance will deteriorate, and if the tin content is more than 7 W/o, internal oxidation will be difficult and workability will deteriorate, so tin 2 to 7S is preferred. Also, one of lanthanum, calcium, and zirconium is 1V
If the I/O or less, oxide particles cannot be precipitated at the grain boundaries, and if any one of lanthanum, calcium, or zirconium exceeds 3S, it becomes difficult to oxidize inside the crystal grains, and internal oxidation takes a long time. , and processing becomes difficult, so 1 to 3
W/o is preferred. Yes, it contains at least one of gallium, magnesium, germanium, cobalt, iron, nickel, aluminum, silicon, copper, and zinc as an impurity, and if the total content is 0.7V1/o or more, it will be moderately contained in the grains. By destroying the dispersed oxide particles or by making the oxide particles extremely fine, the synergistic effect between indium, tin, and any one of calcium, lanthanum, and zirconium is reduced, and the resistance is increased. This is not preferable because it adversely affects the welding effect.
以上のような成分及びその組成範囲ではプレーカ一用電
気接点の通電性には支障なく、従来の銀一酸化インジウ
ム一酸化錫系の接点材料にとつて代わることができる。
次に本発明のブレーカ一用電気接点材料の効果を一層明
瞭ならしめるために具体的なブレーカ一用電気接点の製
作実施例とその試験結果について詳述する。With the above-mentioned components and composition ranges, there is no problem with the conductivity of the electrical contact for the breaker, and it can replace the conventional silver-indium-tin-monoxide-based contact material.
Next, in order to make the effects of the electrical contact material for breaker 1 of the present invention more clear, a detailed example of manufacturing an electrical contact for breaker 1 and its test results will be described in detail.
下表の屋１〜屈３に示すものが本発明のプレーカ一用電
気接点材料よシなる実施品で、黒１が本発明の特許請求
の範囲第１項に記載の電気接点材料、屈２が特許請求の
範囲第３項に記載の電気接点材料、屈３が特許請求の範
囲第２項に記載の電気接点材料よりなるブレーカ一用電
気接点である。これらは通常の方法で溶解鋳造した後ろ
う付をしやすくするために片面に銀を圧着し、圧延加工
にて２ｗｎ厚の板になして６（Ｘ）？に各々プレスで打
抜き、７５０℃６気圧の酸素中で１２０時間内部酸化し
たのち、銅合金にろう付してなるブレーカ一用電気接点
である。これらを黒４に示す比較品及び屋５〜屈６に示
す従来品と下記の試験条件にて耐溶着性能の比較試験を
行つたところ、下表の右欄に示すような結果を得た。伺
、併せて内部酸化後の断面組織状態も下表の右欄に載せ
た。試験条件 改造ＮＦＢによる溶着試験電圧 ＡＣｌ
ｌ５Ｖ
通電 ２Ｈｚ
電流 ２９００Ａ
接点寸法 ６ｆ）１１１！ＩＬ×２ｔＷ！ｎ試験回数
１００回（２０回の試験を５回くりかえした。Items 1 to 3 in the table below are embodiments of the electrical contact material for a breaker according to the present invention, and black 1 represents the electrical contact material according to claim 1 of the present invention. 3 is an electrical contact for a breaker made of the electrical contact material according to claim 3, and 3 is made of the electrical contact material according to claim 2. After melting and casting using the usual method, silver was crimped on one side to make it easier to braze, and the plates were rolled to a thickness of 2wn (6(X)). This is an electrical contact for a breaker, which is punched out using a press, internally oxidized for 120 hours at 750°C and 6 atmospheres of oxygen, and then brazed to a copper alloy. When these were subjected to a comparative test of welding resistance performance under the following test conditions with the comparative products shown in Black 4 and the conventional products shown in Ya 5 to Ku 6, the results shown in the right column of the table below were obtained. In addition, the cross-sectional structure state after internal oxidation is also listed in the right column of the table below. Test conditions Welding test voltage using modified NFB ACl
l5V energization 2Hz current 2900A contact dimensions 6f) 111! IL×2tW! n Number of tests: 100 times (20 tests were repeated 5 times.
）上記の表で明らかなように本発明のブレーカ一用電気
接点材料によつて作られた黒１〜屈３の亀甲状組織内部
に均一な針状組織を有する電気接点は、ブレーカ一用電
気接点として黒４に示す亀甲状内部に粒状組織を有する
比較品及び不均一な針状組織を有する黒５均一な粒状組
織を有する應６に示す従来品と比べ著しく溶着発生回数
が少く耐溶着性に優れていることがわかる。) As is clear from the table above, the electrical contacts made of the electrical contact material for breaker 1 of the present invention having a uniform needle-like structure inside the tortoiseshell structure of black 1 to 3 are electrical contacts for breaker 1 of the present invention. As a contact point, the number of welding occurrences is significantly lower than that of the comparative product, which has a granular structure inside the tortoiseshell-shaped interior shown in black 4, and the conventional product, shown in black 5, which has a uniform granular structure, which has a nonuniform acicular structure, and is resistant to welding. It can be seen that it is excellent.
かように本発明による亀甲状組織内部に均一な針状組織
を有するブレーカ一用電気接点材料は、ブレーカ一用電
気接点材料として従来の銀一酸化カドミウム系及び銀一
酸化インジウム一酸化錫系のブレーカ一用電気接点材料
より優れた耐溶着性を有するので、これら従来のブレー
カ一用電気接点材料によつて代わることのできる画期的
なものであるといえる。As described above, the electrical contact material for a breaker according to the present invention having a uniform acicular structure inside the hexagonal structure is superior to the conventional silver cadmium monoxide-based and silver monoxide indium tin monoxide-based electrical contact materials for a breaker. Since it has better welding resistance than electrical contact materials for breaker single use, it can be said to be an epoch-making product that can replace these conventional electrical contact materials for breaker single use.
Claims (1)
料において、内部酸化前の組成がインジウム２〜１０ｗ
／ｏと、錫２〜７ｗ／ｏと、ランタン１〜３ｗ／ｏと、
残部銀とよりなるブレーカー用電気接点材料。 ２ 内部酸化法で製造される銀−酸化物系の電気接点材
料において、内部酸化前の組成がインジウム２〜１０ｗ
／ｏと、錫２〜７ｗ／ｏとカルシウム１〜３ｗ／ｏと、
残部銀とよりなるブレーカー用電気接点材料。 ３ 内部酸化法で製造される銀−酸化物系の電気接点材
料において、内部酸化前の組成がインジウム２〜１０ｗ
／ｏと、錫２〜７ｗ／ｏと、ジルコニウム１〜３ｗ／ｏ
と、残部銀とよりなるブレーカー用電気接点材料。[Claims] 1. A silver-oxide electrical contact material produced by an internal oxidation method, the composition of which is indium 2 to 10 w before internal oxidation.
/o, tin 2~7w/o, lantern 1~3w/o,
Electrical contact material for breakers consisting of silver as the balance. 2 In silver-oxide electrical contact materials manufactured by internal oxidation method, the composition before internal oxidation is indium 2 to 10w.
/o, tin 2~7w/o and calcium 1~3w/o,
Electrical contact material for breakers consisting of silver as the balance. 3 In silver-oxide electrical contact materials manufactured by internal oxidation method, the composition before internal oxidation is indium 2 to 10w.
/o, 2 to 7 w/o of tin, and 1 to 3 w/o of zirconium
An electrical contact material for breakers consisting of the following: and the balance being silver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50097320A JPS5921939B2 (en) | 1975-08-11 | 1975-08-11 | Electrical contact materials for breakers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50097320A JPS5921939B2 (en) | 1975-08-11 | 1975-08-11 | Electrical contact materials for breakers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5221669A JPS5221669A (en) | 1977-02-18 |
| JPS5921939B2 true JPS5921939B2 (en) | 1984-05-23 |
Family
ID=14189179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50097320A Expired JPS5921939B2 (en) | 1975-08-11 | 1975-08-11 | Electrical contact materials for breakers |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5921939B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58107455A (en) * | 1981-12-18 | 1983-06-27 | Tanaka Kikinzoku Kogyo Kk | Material for slide contact |
| JP4827954B2 (en) * | 2009-08-19 | 2011-11-30 | 治夫 鶴岡 | Bicycle overturn prevention device |
| CN101950592B (en) * | 2010-09-09 | 2013-02-13 | 浙江乐银合金有限公司 | Method for manufacturing silver tin oxide indium oxide contact alloy material and manufactured alloy thereof |
| FR3051431B1 (en) | 2016-05-18 | 2018-06-22 | Peugeot Citroen Automobiles Sa | SUPPORT FOR STORING A ROLLER |
-
1975
- 1975-08-11 JP JP50097320A patent/JPS5921939B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5221669A (en) | 1977-02-18 |
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