JPH0754078A - Production of ag-oxide type composite electrical contct material - Google Patents
Production of ag-oxide type composite electrical contct materialInfo
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- JPH0754078A JPH0754078A JP5200472A JP20047293A JPH0754078A JP H0754078 A JPH0754078 A JP H0754078A JP 5200472 A JP5200472 A JP 5200472A JP 20047293 A JP20047293 A JP 20047293A JP H0754078 A JPH0754078 A JP H0754078A
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- oxide
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、Ag−酸化物系複合電気
接点材料の線材または条材の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a wire or strip of Ag-oxide composite electric contact material.
【０００２】[0002]
【従来の技術】従来より、電気接点材料としてはAgやAg
-Ni あるいはAg-CdO系が用いられている。中でも、Ag-N
i は低接触抵抗で消耗が少ないため、Agに代わってかな
り広汎に用いられている。また、Ag-Ni は加工やスポッ
ト溶接が容易なので台材等への固着作業の自動化が可能
となり、組立コストが安く、また、品質の安定化がはか
れるという大きな特長をもっている。2. Description of the Related Art Conventionally, Ag or Ag has been used as an electric contact material.
-Ni or Ag-CdO system is used. Above all, Ag-N
Since i has low contact resistance and little wear, i is widely used instead of Ag. Since Ag-Ni is easy to process and spot-weld, it is possible to automate the work of sticking it to a base material, etc., which has the major advantages of low assembly cost and stable quality.
【０００３】しかし、反面、Ag-CdO等のAg−酸化物系と
比較して消耗量が多く、耐溶着性が劣るため、小型スイ
ッチ等の小容量領域に使用範囲が限られている。近時、
各産業分野における合理化、機械装置の自動化は目覚ま
しい発達を遂げているが、これに伴い装置は大型化、複
雑化する傾向にあり、それに対してこれらの制御系は小
型化、動作の高頻度化、大容量化が要求されており、こ
の点からもAg-Ni の耐溶着性は常に問題となり、その代
替材料の開発が望まれている。On the other hand, on the other hand, the amount of wear is large and the welding resistance is inferior to that of Ag-oxide type such as Ag-CdO, so that the range of use is limited to a small capacity region such as a small switch. Recently,
Rationalization in each industrial field and automation of mechanical devices have made remarkable progress, but with this trend, devices tend to become larger and more complicated, whereas these control systems are becoming smaller and the frequency of operations is increasing. However, a large capacity is required, and also from this point, the welding resistance of Ag-Ni is always a problem, and the development of an alternative material for it is desired.
【０００４】そこで、上記の欠点を解決すべくAg-Ni に
種々の金属元素あるいは金属酸化物、窒化物、炭化物等
を添加して特性の向上を試みている。しかしながら、Ag
-Ni系本来の特長である安定した接触抵抗や加工性、ス
ポット溶接が種々の添加物の混在により阻害され、いず
れも満足すべき結果が得られていない。また、Ag-CdO系
は耐溶着性、耐消耗性等にすぐれ、使用範囲が広いこと
で知られているが、加工性、台材への溶接性等が問題と
なる。Therefore, in order to solve the above-mentioned drawbacks, various metallic elements or metal oxides, nitrides, carbides, etc. are added to Ag-Ni to try to improve the characteristics. However, Ag
-Stable contact resistance, workability, and spot welding, which are the original features of the Ni system, are hampered by the mixture of various additives, and no satisfactory results have been obtained. Further, the Ag-CdO system is known to have excellent welding resistance, wear resistance and the like and has a wide range of use, but it has problems such as workability and weldability to a base material.
【０００５】すなわち、酸化物が台材との界面に存在す
るため、スポット溶接やろう付けでの接合強度が非酸化
物系の材料と比較して著しく小さい。そこで、これらAg
-CdO系材料にスポット溶接やろう付けのための酸化物を
含まない層を形成した複合材料が考えられている。That is, since the oxide is present at the interface with the base material, the joint strength in spot welding or brazing is significantly smaller than that of the non-oxide type material. So these Ag
-A composite material in which a layer containing no oxide for spot welding or brazing is formed on a CdO-based material is considered.
【０００６】[0006]
【発明が解決しようとする課題】ところが、この複合材
料は、例えば、Ag-CdO系条材とAgリボンを熱間圧着法で
接合し、該複合条材を得ているが、実際に台材等を接合
してスイッチに組み込んでテストを行うと、Ag-CdOとAg
との境界から剥離して所定の寿命に達しないことが多
い。However, this composite material is obtained by, for example, joining an Ag-CdO-based strip and an Ag ribbon by a hot pressing method to obtain the composite strip. When they are joined to the switch and tested, Ag-CdO and Ag-CdO
It often peels off from the boundary between and and does not reach a predetermined life.
【０００７】さらに、Ag-CdO系の電気接点材料は、既知
のようにその製造上、溶解、熱間加工、高圧酸化、分析
および回収などCdを系外に排出し易い多数の工程を含ん
でいるため、当然その排出防止に努めなければならず、
この結果、特に生産設備の拡大に伴って公害防止設備が
必要となり、当該防止のための多大なエネルギーが消費
され、エネルギー資源問題にまで発展しようとしてい
る。Further, as is well known, the Ag-CdO-based electrical contact material includes a number of steps such as melting, hot working, high-pressure oxidation, analysis and recovery, which are easy to discharge Cd out of the system in the production thereof. Therefore, of course, we must try to prevent its discharge,
As a result, pollution prevention equipment is required especially with the expansion of production equipment, and a large amount of energy is consumed for the prevention, which is about to develop into an energy resource problem.
【０００８】このため、Ag-CdOによる当該製品を製造す
る業者は、これに対し十分な対策を講じているが、その
対策が十分であるからというだけでは、もはや公害に対
する社会情勢に対応していけず、このような接点を考え
ていたのでは公害対策に対する莫大な設備投資により生
産価格に重大な影響を与えることになる。Therefore, the manufacturer of the product using Ag-CdO takes sufficient measures against this, but just because the measures are sufficient, it no longer corresponds to the social situation against pollution. In the end, considering such contact points, a huge capital investment for pollution control would have a significant impact on the production price.
【０００９】[0009]
【課題を解決するための手段】そこで本発明は、Ag中に
Sb,Sn,Zn,Mn,In,Cu,Pb,Te,Bi,Ni,Fe,Co,Cr,Li の酸化物
の１種以上を分散させたAg−酸化物系の線材または条
材、あるいは、Ag中にSb,Sn,Zn,Mn,In,Cu,Pb,Te,Bi,Ni,
Fe,Co,Cr,Li の各元素の１種以上を添加したAg合金の線
材または条材を内部酸化したもの、あるいは、Ag粉とS
b,Sn,Zn,Mn,In,Cu,Pb,Te,Bi,Ni,Fe,Co,Cr,Li の酸化物
粉の１種以上を混合し、この混合粉を成形・焼結した
後、熱間押し出し等により、Ag−酸化物系の線材または
条材となしたもの、さらに、内部酸化法もしくは化学的
処理法によりAg中にSb,Sn,Zn,Mn,In,Cu,Pb,Te,Bi,Ni,F
e,Co,Cr,Li の１種以上の酸化物を分散したAg−酸化物
系の粉体もしくは小片体を成形・焼結した後、熱間押し
出し等により、Ag−酸化物系の線材または条材となした
ものを、N2ガスとCOガスの体積比率が１：１〜８：１の
範囲で混合された混合ガス雰囲気中で、４００〜９００
℃の温度で電流加熱により連続的に加熱することで、線
材または条材の表層の酸化物を選択的に還元して、線材
または条材の外周にAgに富んだ還元層を形成させること
で上記問題を解決するものである。SUMMARY OF THE INVENTION Therefore, the present invention is
Ag-oxide-based wire or strip in which one or more oxides of Sb, Sn, Zn, Mn, In, Cu, Pb, Te, Bi, Ni, Fe, Co, Cr, Li are dispersed, or , Ag in Sb, Sn, Zn, Mn, In, Cu, Pb, Te, Bi, Ni,
Internally oxidized Ag alloy wire or strip with one or more elements of Fe, Co, Cr, Li added, or Ag powder and S
After mixing one or more oxide powders of b, Sn, Zn, Mn, In, Cu, Pb, Te, Bi, Ni, Fe, Co, Cr, Li, and molding and sintering this mixed powder, A wire or strip made of Ag-oxide by hot extrusion, etc., and further Sb, Sn, Zn, Mn, In, Cu, Pb, Te in Ag by internal oxidation method or chemical treatment method. , Bi, Ni, F
After forming and sintering Ag-oxide powder or small particles in which one or more oxides of e, Co, Cr and Li are dispersed, hot-extrusion etc. is used to form the Ag-oxide wire or 400 to 900 in the mixed gas atmosphere in which the volume ratio of N 2 gas and CO gas is mixed in the range of 1: 1 to 8: 1.
By continuously heating by current heating at a temperature of ℃, by selectively reducing the oxide of the surface layer of the wire or strip, a reduction layer rich in Ag is formed on the outer periphery of the wire or strip. The above problem is solved.
【００１０】一般に、Ag−酸化物系材料の酸化物を還元
しようとした場合、還元性ガス例えばCOと酸化物が接触
した途端、急激な反応が起こって、その内部は空孔（ポ
ア）の多いスポンジ状を呈することになり、材料として
きわめて脆弱な組織になる。したがって、通常の方法で
線材または条材の表面に還元層を形成する目的で還元性
ガスと接触させて還元層を得たとしても、該還元層が脆
弱なため、台材にろう付けまたは溶接しても接点脱落等
の事故のおそれがあり、実用に供し得るものではない。Generally, when an oxide of an Ag-oxide type material is to be reduced, a rapid reaction occurs as soon as the reducing gas, for example, CO, comes into contact with the oxide, and the inside thereof has pores (pores). It will have a sponge-like structure with a lot of particles, resulting in an extremely fragile tissue. Therefore, even if the reducing layer is obtained by contacting with a reducing gas for the purpose of forming the reducing layer on the surface of the wire or strip by the usual method, the reducing layer is fragile and thus brazing or welding to the base material. However, there is a risk of accidents such as contact loss, and it is not practical.
【００１１】本発明では、基本的には適度な加工歪みを
内在する線材または条材を用い、還元性ガスとしてN2ガ
スとCOガスの体積比率を１：１〜８：１の範囲とし、還
元温度を徐々に上昇させることにより所望の還元層が得
られる。なお、N2ガスとCOガスの体積比率を１：１〜
８：１の範囲とした理由は、線材または条材の表面の酸
化物層を還元させる際に、所望の均一な厚さに制御する
ためにはN2ガスに対するCOガスの体積比率が１：１．１
以上では還元速度を制御することが困難となり、さらに
COガス量が増加することで安全性に影響がでてくる。ま
た、N2ガスに対するCOガスの体積比率が８：０．９以下
ではCOガスによる還元力が十分ではなく、還元層を均一
に制御することができなくなるためである。In the present invention, basically, a wire or strip having a proper working strain is used, and the volume ratio of N 2 gas to CO gas is 1: 1 to 8: 1 as the reducing gas. The desired reduction layer is obtained by gradually increasing the reduction temperature. The volume ratio of N 2 gas to CO gas is 1: 1 to
The reason for setting the range to 8: 1 is that the volume ratio of CO gas to N 2 gas is 1: 1 in order to control the oxide layer on the surface of the wire or strip to a desired uniform thickness. 1.1
With the above, it becomes difficult to control the reduction rate.
An increase in the amount of CO gas will affect safety. Further, when the volume ratio of CO gas to N 2 gas is 8: 0.9 or less, the reducing power of CO gas is not sufficient and the reducing layer cannot be uniformly controlled.
【００１２】また、線材または条材に対し、３０％以上
の断面減少率で冷間加工を行う理由は、３０％以上の断
面減少率での冷間加工によりマトリックス中の酸化物近
傍には、厳密にいえば極微細なクラックが生じており、
このため後の加熱によってもマトリックス中へのCOガス
等の侵入が集中的にならず、適度に分散されるために大
きい空孔が出現し難いためである。The reason why the wire or strip is cold-worked at a cross-section reduction rate of 30% or more is that the cold-working at a cross-section reduction rate of 30% or more causes near-oxides in the matrix Strictly speaking, there are extremely fine cracks,
For this reason, even if the heating is performed later, the invasion of CO gas and the like into the matrix is not concentrated and is appropriately dispersed, so that large pores are difficult to appear.
【００１３】以上の一連の手段の相乗的作用が理想的な
効果を生ぜしめている。The synergistic action of the above series of means produces an ideal effect.
【００１４】[0014]
【実施例】以下に本発明の実施例を説明する。 第１実施例 焼結・成形と押し出しによって製造された直径６mmのAg
-4Wt%Sb2O3-2Wt%SnO2-4Wt%CuO-0.5Wt%Niの線材を、伸線
加工により直径２mmの線とした。このときの冷間加工率
は３３％であった。EXAMPLES Examples of the present invention will be described below. First Example Ag having a diameter of 6 mm manufactured by sintering, molding and extrusion
A wire of -4Wt% Sb 2 O 3 -2Wt% SnO 2 -4Wt% CuO-0.5Wt% Ni was drawn into a wire having a diameter of 2 mm. The cold working ratio at this time was 33%.
【００１５】これを、N2ガスとCOガスの体積比率が８：
１の雰囲気になるように調整した電流加熱装置により、
温度を７５０℃に保持されるように通電電流を制御して
連続的に加熱することで、線材表面の外周に還元層を有
する線材を得た。このときの還元層の厚さは、約０．１
４mmであった。これをさらに伸線加工により直径１．８
mmの線材として試料１とした。The volume ratio of N 2 gas to CO gas is 8:
By the current heating device adjusted to become the atmosphere of 1,
A wire having a reducing layer on the outer periphery of the surface of the wire was obtained by controlling the applied current so as to keep the temperature at 750 ° C. and heating continuously. At this time, the thickness of the reducing layer is about 0.1.
It was 4 mm. This is further drawn to a diameter of 1.8
Sample 1 was used as the mm wire.
【００１６】第２実施例 焼結・成形と押し出しによって製造した直径６mmのAg-
6.2Wt%Sb2O3-1Wt%ZnO-2Wt%In2O3-0.3Wt%TeO2 の線材
を、伸線加工により直径２mmの線とした。このときの冷
間加工率は６７％であった。これを、N2ガスとCOガスの
体積比率が７：１の雰囲気になるように調整した電流加
熱装置により、温度を９００℃に保持されるように通電
電流を制御して連続的に加熱することで、線材表面の外
周に還元層を有する線材を得た。。Second embodiment Ag-having a diameter of 6 mm manufactured by sintering, molding and extrusion
A wire of 6.2Wt% Sb 2 O 3 -1Wt% ZnO-2Wt% In 2 O 3 -0.3Wt% TeO 2 was drawn into a wire having a diameter of 2 mm. The cold working ratio at this time was 67%. This is continuously heated by controlling the energizing current so that the temperature is maintained at 900 ° C. by a current heating device adjusted so that the volume ratio of N 2 gas and CO gas is 7: 1. Thereby, a wire rod having a reducing layer on the outer periphery of the surface of the wire rod was obtained. .
【００１７】このときの還元層の厚さは、約０．１５mm
であった。これをさらに伸線加工により直径１．８mmの
線材として試料２とした。以下、上記各実施例とほぼ同
様の方法で表１に示す試料３〜６を作製し、これら試料
１〜６の各線材を長さ２mmに切断した後、スポット溶接
により台材に固着した。The thickness of the reducing layer at this time is about 0.15 mm.
Met. This was further drawn to obtain Sample 2 as a wire rod having a diameter of 1.8 mm. In the following, samples 3 to 6 shown in Table 1 were prepared in the same manner as in each of the above-described examples, and the wire rods of these samples 1 to 6 were cut to a length of 2 mm and then fixed to the base material by spot welding.
【００１８】つぎに、成形プレスにより厚さ０．８mm、
幅および長さ約２．５mmの角形になるように成形加工し
た。この各接点の剪断強度を測定すると共に市販のコン
タクターに組み込み、電圧２２０Ｖ、電流７８Ａ、力率
０．３５で実装テストを行った。なお、上記実施例では
連続炉を用いたが、段階的に加熱することができる方法
であれば連続炉に限るものではなく、例えばバッチ型炉
のようなものを用いてもよい。Next, by a molding press, a thickness of 0.8 mm,
It was formed into a square having a width and a length of about 2.5 mm. The shear strength of each contact was measured, and the contact strength was measured by incorporating it into a commercially available contactor and conducting a mounting test at a voltage of 220 V, a current of 78 A and a power factor of 0.35. Although the continuous furnace is used in the above-mentioned embodiments, the method is not limited to the continuous furnace as long as the method allows stepwise heating, and for example, a batch type furnace may be used.
【００１９】つぎに、比較のために従来例として最も標
準的な２例を作製し、比較試験を行った。 従来例 厚さ５mm、幅１００mm、長さ２００mmのAg-9Wt%Sb-2Wt%
Sn-0.3Wt%Ni 合金と、厚さ０．５mm、幅１００mm、長さ
２００mmのAg板を重ね合わせて、熱間圧着法により接合
し、冷間圧延により厚さ０．８mmまで加工した。Next, for comparison, the two most standard conventional examples were prepared and comparative tests were conducted. Conventional example Ag-9Wt% Sb-2Wt% with thickness 5mm, width 100mm and length 200mm
A Sn-0.3Wt% Ni alloy and an Ag plate having a thickness of 0.5 mm, a width of 100 mm and a length of 200 mm were superposed on each other, bonded by a hot pressing method, and processed by cold rolling to a thickness of 0.8 mm.
【００２０】つぎに、２．５×２．５mmの大きさにプレ
スで打ち抜き、このペレットを大気中において７５０℃
に設定した電気炉中で内部酸化処理を施し、裏側にAg層
を形成したAg-10Wt%Sb2O3-2Wt%SnO2-0.3Wt%NiOの接点を
得た。 従来例 上記従来例と同様の方法により裏側にAg層を形成した
Ag-5Wt%Sb2O3-5Wt%ZnO-1Wt%CuO-1Wt%Bi2O3の接点を得
た。Next, it was punched into a size of 2.5 × 2.5 mm with a press, and the pellets were 750 ° C. in the atmosphere.
A contact of Ag-10Wt% Sb 2 O 3 -2Wt% SnO 2 -0.3Wt% NiO was obtained, which was subjected to internal oxidation treatment in the electric furnace set to the above condition and an Ag layer was formed on the back side. Conventional example An Ag layer was formed on the back side by the same method as in the above conventional example.
To obtain a contact of Ag-5Wt% Sb 2 O 3 -5Wt% ZnO-1Wt% CuO-1Wt% Bi 2 O 3.
【００２１】[0021]
【表１】 [Table 1]
【００２２】[0022]
【発明の効果】以上詳細に説明をした本発明によると、
Cdを用いないために公害の発生がなくなると共にそのた
めの公害防止設備等が不必要となり、当該防止のための
多大なエネルギーの必要がなくなる効果を有する。さら
に、試験結果に示される如く、台材との溶接強度が優れ
るために接点開閉テストにおいても優れた効果を有する
ものである。According to the present invention described in detail above,
Since Cd is not used, the generation of pollution is eliminated, and pollution prevention equipment and the like for that purpose are unnecessary, which has an effect of not requiring a large amount of energy for the prevention. Further, as shown in the test results, the welding strength with the base material is excellent, so that it also has an excellent effect in the contact opening / closing test.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 奈良 喬 東京都千代田区鍛冶町二丁目９番12号 株 式会社徳力本店内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takashi Nara 2-9-12 Kajicho, Chiyoda-ku, Tokyo Incorporated company Tokuriki Head Office
Claims (4)
Fe,Co,Cr,Li の酸化物の１種以上を分散させたAg−酸化
物系の線材または条材をN2ガスとCOガスの体積比率が
１：１〜８：１の範囲で混合された混合ガス雰囲気中
で、４００〜９００℃の温度で電流加熱により連続的に
加熱することで、線材または条材の表層の酸化物を選択
的に還元して線材または条材の外周に酸化物還元層を形
成させたことを特徴とするAg−酸化物系複合電気接点材
料の製造方法。1. An Ag containing Sb, Sn, Zn, Mn, In, Cu, Pb, Te, Bi, Ni,
Mixing Ag-oxide based wire or strip in which one or more oxides of Fe, Co, Cr and Li are dispersed in a volume ratio of N 2 gas and CO gas of 1: 1 to 8: 1. In the mixed gas atmosphere, continuously heated by current heating at a temperature of 400 to 900 ° C. to selectively reduce oxides on the surface layer of the wire or strip and oxidize it to the outer periphery of the wire or strip. 1. A method for producing an Ag-oxide composite electric contact material, which comprises forming a material reduction layer.
Fe,Co,Cr,Li の各元素の１種以上を添加した銀合金の線
材または条材を内部酸化させ、該材料を断面減少率とし
て３０％以上の冷間加工を施し、内部酸化時の結晶粒を
破壊する共に材料内部に加工歪みを残した素材を用いる
ことを特徴とする請求項１記載のAg−酸化物系複合電気
接点材料の製造方法。2. An Ag containing Sb, Sn, Zn, Mn, In, Cu, Pb, Te, Bi, Ni,
A wire or strip of a silver alloy to which one or more elements of Fe, Co, Cr, Li are added is internally oxidized, and the material is subjected to cold working at a sectional reduction rate of 30% or more. 2. The method for producing an Ag-oxide composite electric contact material according to claim 1, wherein a material that destroys crystal grains and leaves processing strain inside the material is used.
Fe,Co,Cr,Li の酸化物粉の１種以上を混合し、この混合
粉を成形・焼結した後、熱間押し出し等によりAg−酸化
物系の線材または条材とし、該材料を断面減少率として
３０％以上の冷間加工を施し、材料内部に加工歪みを残
した素材を用いることを特徴とする請求項１記載のAg−
酸化物系複合電気接点材料の製造方法。3. Ag powder and Sb, Sn, Zn, Mn, In, Cu, Pb, Te, Bi, Ni,
After mixing one or more kinds of oxide powders of Fe, Co, Cr, and Li, molding and sintering the mixed powders, hot extruding or the like to form Ag-oxide-based wires or strips, which are The Ag-according to claim 1, characterized in that a material which is cold-worked at a cross-section reduction rate of 30% or more and has a working strain left inside the material is used.
Manufacturing method of oxide-based composite electrical contact material.
Ag中にSb,Sn,Zn,Mn,In,Cu,Pb,Te,Bi,Ni,Fe,Co,Cr,Li の
１種以上の酸化物を分散したAg−酸化物系の粉体もしく
は小片体を成形・焼結した後、熱間押し出し等によりAg
−酸化物系の線材または条材とし、該材料を断面減少率
として３０％以上の冷間加工を施し、材料内部に加工歪
みを残した素材を用いることを特徴とする請求項１記載
のAg−酸化物系複合電気接点材料の製造方法。4. An internal oxidation method or a chemical treatment method
Ag-oxide powder or particles in which one or more oxides of Sb, Sn, Zn, Mn, In, Cu, Pb, Te, Bi, Ni, Fe, Co, Cr, Li are dispersed in Ag. After forming and sintering the body, Ag is extruded by hot extrusion, etc.
A material according to claim 1, characterized in that the material is an oxide-based wire or strip, and the material is cold-worked with a cross-sectional reduction rate of 30% or more to leave working strain inside the material. -A method for producing an oxide-based composite electrical contact material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5200472A JPH0754078A (en) | 1993-08-12 | 1993-08-12 | Production of ag-oxide type composite electrical contct material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5200472A JPH0754078A (en) | 1993-08-12 | 1993-08-12 | Production of ag-oxide type composite electrical contct material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0754078A true JPH0754078A (en) | 1995-02-28 |
Family
ID=16424892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5200472A Pending JPH0754078A (en) | 1993-08-12 | 1993-08-12 | Production of ag-oxide type composite electrical contct material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0754078A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014091634A1 (en) * | 2012-12-14 | 2014-06-19 | 株式会社徳力本店 | Electrode material for thermal fuse and production method therefor |
| CN112095057A (en) * | 2020-08-08 | 2020-12-18 | 福达合金材料股份有限公司 | Nano silver wire modified silver-nickel electric contact material and preparation method thereof |
-
1993
- 1993-08-12 JP JP5200472A patent/JPH0754078A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014091634A1 (en) * | 2012-12-14 | 2014-06-19 | 株式会社徳力本店 | Electrode material for thermal fuse and production method therefor |
| JPWO2014091634A1 (en) * | 2012-12-14 | 2017-01-05 | 株式会社徳力本店 | Electrode material for thermal fuse and method for manufacturing the same |
| CN112095057A (en) * | 2020-08-08 | 2020-12-18 | 福达合金材料股份有限公司 | Nano silver wire modified silver-nickel electric contact material and preparation method thereof |
| CN112095057B (en) * | 2020-08-08 | 2021-09-17 | 福达合金材料股份有限公司 | Nano silver wire modified silver-nickel electric contact material and preparation method thereof |
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