JP2641548B2 - Ag-oxide composite contact material and method for producing the same - Google Patents
Ag-oxide composite contact material and method for producing the sameInfo
- Publication number
- JP2641548B2 JP2641548B2 JP33477288A JP33477288A JP2641548B2 JP 2641548 B2 JP2641548 B2 JP 2641548B2 JP 33477288 A JP33477288 A JP 33477288A JP 33477288 A JP33477288 A JP 33477288A JP 2641548 B2 JP2641548 B2 JP 2641548B2
- Authority
- JP
- Japan
- Prior art keywords
- oxide
- alloy
- contact material
- composite
- 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 - Lifetime
Links
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- Contacts (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Laminated Bodies (AREA)
- Manufacture Of Switches (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、Ag−酸化物系接点材料とCuまたはCu合金と
の複合材料およびその製造方法に関する。The present invention relates to a composite material of an Ag-oxide contact material and Cu or a Cu alloy and a method for producing the same.
電気接点材料としてAg、Ag−NiあるいはAg中にCd、S
b、Sn、In、Zn等の酸化物を分散させた所謂Ag−酸化物
系材料が用いられている。Ag, Ag-Ni or Cd, S in Ag
So-called Ag-oxide-based materials in which oxides such as b, Sn, In, and Zn are dispersed are used.
特に、このAg−酸化物系材料は耐溶着性、耐消耗性等
の接点特性が優れているために主に中負荷領域で使用さ
れているもので、接点の裏面にはAg層を設けて台材にろ
う付けあるいはスポット溶接を行って固着する方法が一
般的にとられている。In particular, this Ag-oxide material is mainly used in a medium load region because of its excellent contact characteristics such as welding resistance and wear resistance, and an Ag layer is provided on the back surface of the contact. A method of brazing or spot-welding the base material to fix it is generally adopted.
ところが、近時工程の合理化を目的としてAg−酸化物
系材料とCuあるいはCu合金の条材を複合した複合材料が
多く用いられるようになってきた。この複合材料はAg−
酸化物系材料とCuあるいはCu合金の直接の接合が困難で
あるために、通常は中間層としてAg層を介在させて製造
している。However, recently, for the purpose of streamlining the process, a composite material obtained by combining an Ag-oxide-based material and a strip material of Cu or a Cu alloy has come to be widely used. This composite material is Ag-
Since it is difficult to directly join an oxide-based material and Cu or a Cu alloy, it is usually manufactured with an Ag layer interposed as an intermediate layer.
以上のようなAg−酸化物系材料とCuあるいはCu合金の
条材を複合した複合材料は、CuあるいはCu合金とAgとの
接合強度には問題はないが、Ag−酸化物系材料とAg層間
では充分な強度が得られないという問題がある。The composite material obtained by compounding the Ag-oxide material and the Cu or Cu alloy strip as described above has no problem in the bonding strength between Cu or Cu alloy and Ag, but the Ag-oxide material and Ag There is a problem that sufficient strength cannot be obtained between the layers.
接点開閉後の接点を観察すると、特に接点端部におい
て、AgとAg−酸化物系材料との接合界面を微細なクラッ
クが発生する。この発生したクラックはさらに接合界面
内部へと徐々に進行し、やがて接点剥離となるという可
能性がある。When observing the contact after opening and closing the contact, a fine crack is generated at the joint interface between Ag and the Ag-oxide material, especially at the contact end. The generated cracks gradually progress further into the inside of the bonding interface, and there is a possibility that the contact will eventually peel off.
また、これらのクラックは接点開閉時に発生するジュ
ール熱やアーク熱等の熱拡散の悪化を助長し、接点の疑
似溶着や異常消耗の原因となる問題がある。In addition, these cracks promote deterioration of thermal diffusion such as Joule heat and arc heat generated when the contacts are opened and closed, causing a problem of causing false welding and abnormal wear of the contacts.
本発明は、Ag−酸化物系材料に対して接合性が良好で
ある未酸化組成Ag合金即ち、Ag−酸化物系材料と同成分
系のAg合金を熱圧着して第１材料とし、また、AgとCuま
たはCu合金とを熱圧着して第２材料とし、上記第１材料
をN2等の非酸化性雰囲気もしくは不活性雰囲気で両者の
融点以下400℃以上の温度で一定時間保持して接合界面
の拡散をうながしておき、Ag合金層とAg層とが中間層と
なるように第１材料と第２材料とを接合して複合材料と
したことを特徴とする。The present invention provides an unoxidized Ag alloy having good bondability to an Ag-oxide material, that is, an Ag-oxide-based material and an Ag alloy of the same component type as a first material by thermocompression bonding, and , Ag and Cu or a Cu alloy are thermocompression-bonded to form a second material, and the first material is kept in a non-oxidizing atmosphere such as N 2 or an inert atmosphere at a temperature not lower than the melting point of both and 400 ° C. or more for a certain time The first material and the second material are joined so that the Ag alloy layer and the Ag layer become an intermediate layer to form a composite material.
以下に本発明の実施例を説明する。 Hereinafter, embodiments of the present invention will be described.
Ag粉4500gと、Sn酸化物粉400g、Sb酸化物粉50g、In酸
化物粉50gを混合して直径80mmのビレットに成形、焼結
した後、900℃の温度で厚さ5mm、幅40mmの形状に熱間押
出しを行った。4500g of Ag powder, 400g of Sn oxide powder, 50g of Sb oxide powder and 50g of In oxide powder were mixed and formed into a billet with a diameter of 80mm, sintered and then 5mm thick and 40mm wide at 900 ° C. Hot extrusion was performed on the shape.
つぎに、溶解法により、重量比で92％Ag−Sn合金を作
り、厚さ0.25mm、幅40mmの形状に加工した。Next, a 92% Ag-Sn alloy was prepared by a melting method at a weight ratio of 92%, and processed into a shape having a thickness of 0.25 mm and a width of 40 mm.
そこで、上記Ag−（Sn−Sb−In）Oxの条材と92％Ag−
Sn合金の条材をN2中で850℃に加熱し、熱間圧延により
圧着し、厚さ3mmの第１複合条材を得た。さらに、この
第１複合条材をN2中で750℃で５時間の条件で加熱して
拡散をうながした。Therefore, the Ag- (Sn-Sb-In) O x of elongated member and 92% Ag-
The Sn alloy strip was heated to 850 ° C. in N 2 and pressed by hot rolling to obtain a first composite strip having a thickness of 3 mm. Further, the first composite strip was heated at 750 ° C. for 5 hours in N 2 to promote diffusion.
つぎに、厚さ0.25mm、幅40mmのAg条材と厚さ2mm、幅4
0mmの重量比で90％Cu−Niの条材をN2:H2が1:1の雰囲気
中で700℃に加熱し、熱間圧延により圧着して厚さ1.3mm
の第２複合条材を得た。Next, an Ag strip with a thickness of 0.25 mm and a width of 40 mm and a thickness of 2 mm and a width of 4
90% by 0mm weight ratio Cu-Ni of elongated member of N 2: H 2 of 1: heating to 700 ° C. in 1 atmosphere, thickness 1.3mm and pressed by hot rolling
Was obtained.
以上の第１複合条材と第２複合条材とをAg合金層とAg
層が中間層となるように接合してN2中で700℃に加熱し
て熱間圧延により圧着を行って複合材とした。The above first composite strip and second composite strip are combined with an Ag alloy layer and Ag.
The layers were joined to form an intermediate layer, heated to 700 ° C. in N 2 and pressed by hot rolling to form a composite.
上記複合材を厚さ1.8mmまで冷間圧延後、所定寸法に
裁断し、焼鈍と加工を繰り返して図示するような足付き
の断面形状を有する複合条材とした。The above-mentioned composite material was cold-rolled to a thickness of 1.8 mm, cut into a predetermined size, and repeatedly subjected to annealing and processing to obtain a composite strip having a cross-sectional shape with feet as shown in the figure.
以上の複合接点材料の接点性能試験の結果を以下の表
に示す。The following table shows the results of the contact performance test of the composite contact material.
ここで、比較のために従来例として、Agのみを中間層
とした90wt％Ag−（Sn−Sb−In）Oxと90wt％Cu−Ni合金
との複合材を作り、上記実施例と同寸法、同形状に加工
した。Here, as a conventional example for comparison, to make a composite with 90wt was only Ag intermediate layer% Ag- (Sn-Sb-In ) O x and 90wt% Cu-Ni alloy, the the above Example It was processed to the same size and shape.
試験サンプルは長さ4mmに切断し、りん青銅製の台座
にスポット溶接により固定し、市販のスイッチに組み込
んで電圧200V、電流90A、力率0.38の条件下で３万回開
閉を行い、消耗量および溶着回数を測定すると共に剥離
の有無を観察した。The test sample was cut to a length of 4 mm, fixed to a phosphor bronze pedestal by spot welding, incorporated in a commercially available switch, opened and closed 30,000 times under the conditions of 200 V voltage, 90 A current, and 0.38 power factor. In addition, the number of times of welding was measured, and the presence or absence of peeling was observed.
〔発明の効果〕 以上詳細に説明した本発明によると、表に示した如
く、消耗量と溶着回数は、従来例が80mg、10回であるの
に対して、本発明は40mg、０回であり、顕著な効果が示
されている。 [Effects of the Invention] According to the present invention described in detail above, as shown in the table, the consumption amount and the number of times of welding are 80 mg and 10 times in the conventional example, whereas 40 mg and 0 times in the present invention. Yes, showing significant effects.
また、剥離についても、従来例は接点端部から剥離が
観察されるが、本発明では一切観察されないこととな
り、接点材料として優れた効果があることがわかった。Regarding peeling, in the conventional example, peeling was observed from the end of the contact, but was not observed at all in the present invention, and it was found that there was an excellent effect as a contact material.
図面は本発明の一実施例を示す正面図である。 The drawing is a front view showing one embodiment of the present invention.
フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｈ０１Ｈ 11/04 Ｈ０１Ｈ 11/04 Ｂ (56)参考文献 特開 昭51−64442（ＪＰ，Ａ) 特開 昭51−79294（ＪＰ，Ａ) 特開 昭54−128426（ＪＰ，Ａ) 特開 昭54−137457（ＪＰ，Ａ) 特開 昭56−128689（ＪＰ，Ａ) 特開 昭55−22431（ＪＰ，Ａ)Continuation of the front page (51) Int.Cl. 6 Identification number Agency reference number FI Technical indication location H01H 11/04 H01H 11/04 B (56) References JP-A-51-64442 (JP, A) JP-A Sho 51-79294 (JP, A) JP-A-54-128426 (JP, A) JP-A-54-137457 (JP, A) JP-A-56-128689 (JP, A) JP-A-55-22431 (JP, A) A)
Claims (2)
の組み合わせからなるAg−酸化物系複合接点材料におい
て、Ag−酸化物系接点材料とCuまたはCu合金の中間層
に、Ag−酸化物系接点材料と同成分系の未酸化Ag合金と
Agの両層を介在させたことを特徴とするAg−酸化物系複
合接点材料。An Ag-oxide-based composite contact material comprising a combination of an Ag-oxide-based contact material and Cu or a Cu alloy, wherein an Ag-oxide-based contact material and an intermediate layer of Cu or a Cu alloy contain Ag. -An oxide-based contact material and an unoxidized Ag alloy of the same component type
An Ag-oxide composite contact material comprising both Ag layers.
物系材料と同成分系のAg合金を熱圧着して第１材料と
し、また、AgとCuまたはCu合金とを熱圧着して第２材料
とし、上記第１材料を両者の融点以下400℃以上の温度
で一定時間保持して接合界面の拡散をうながしておき、
Ag合金層とAg層が中間層となるように第１材料と第２材
料とを接合して複合材料とすることを特徴とするAg−酸
化物系複合接点材料の製造方法。2. An Ag-oxide-based material is thermocompressed with an Ag alloy of the same component as the Ag-oxide-based material to form a first material, and Ag and Cu or a Cu alloy are thermally bonded. Crimping to form a second material, holding the first material at a temperature of 400 ° C. or lower below the melting point of both for a certain period of time to promote diffusion of the bonding interface,
A method for producing an Ag-oxide-based composite contact material, comprising joining a first material and a second material to form a composite material such that the Ag alloy layer and the Ag layer are intermediate layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33477288A JP2641548B2 (en) | 1988-12-29 | 1988-12-29 | Ag-oxide composite contact material and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33477288A JP2641548B2 (en) | 1988-12-29 | 1988-12-29 | Ag-oxide composite contact material and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02179368A JPH02179368A (en) | 1990-07-12 |
| JP2641548B2 true JP2641548B2 (en) | 1997-08-13 |
Family
ID=18281059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33477288A Expired - Lifetime JP2641548B2 (en) | 1988-12-29 | 1988-12-29 | Ag-oxide composite contact material and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2641548B2 (en) |
-
1988
- 1988-12-29 JP JP33477288A patent/JP2641548B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02179368A (en) | 1990-07-12 |
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