JPS6017801B2 - Method for producing silver-nickel composite powder - Google Patents
Method for producing silver-nickel composite powderInfo
- Publication number
- JPS6017801B2 JPS6017801B2 JP51135515A JP13551576A JPS6017801B2 JP S6017801 B2 JPS6017801 B2 JP S6017801B2 JP 51135515 A JP51135515 A JP 51135515A JP 13551576 A JP13551576 A JP 13551576A JP S6017801 B2 JPS6017801 B2 JP S6017801B2
- Authority
- JP
- Japan
- Prior art keywords
- nickel
- silver
- nickel composite
- composite powder
- powder
- 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 Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
Description
【発明の詳細な説明】
本発明は、銀−ニッケル複合粉末の製造方法に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing silver-nickel composite powder.
一般に銀とニッケルの複合粉末より成る電気接点材料の
耐溶着性の向上には、銭基体中にニッケルを均一且つ微
細に分散させなければならないことは周知の事実である
。It is generally known that in order to improve the welding resistance of electrical contact materials made of composite powder of silver and nickel, nickel must be uniformly and finely dispersed in the coin substrate.
ところで銀及びニッケルの粉末を単に混合し、これを暁
結するという従来の銀−ニッケル複合体の製造では、粒
径４４山（３２５メッシュ）以下の微細な粉末を用いて
も、粉末混合の際に銀及びニッケル粉末を十分にほぐし
、ニッケル粉末を均−微細に浪合させることが難しいた
めに競鯖後大きなニッケル粒として不均一に分散し、電
気接点としての十分な耐溶着性を得ることが困難であっ
た。By the way, in the conventional production of silver-nickel composites in which silver and nickel powders are simply mixed and then sintered, even if fine powders with a particle size of 44 grains (325 mesh) or less are used, there is no problem during powder mixing. Because it is difficult to sufficiently loosen the silver and nickel powder and mix the nickel powder evenly and finely, the nickel powder becomes unevenly dispersed as large nickel particles after the process, making it difficult to obtain sufficient welding resistance for electrical contacts. It was difficult.
そこで、本発明者は以上の事俺に鑑みて鋭意攻究の結果
線基体中にニッケル粒子を均一且つ微細に分散せしめる
ことのできる銀−ニッケル複合粉末の製造方法を開発し
たものである。本発明による銭ーニツケル複合粉末の製
造方法は、銀−ニッケルの複合材料を溶射し、これを急
速に冷却することにより、溶融狼中に球状で溶融分散し
ているニッケル粒子を綾基体中に均一且つ微細に分散凝
固させた狼−ニッケル複合粉末を製造する方法である。In view of the above, the inventors of the present invention have conducted intensive research and have developed a method for producing a silver-nickel composite powder that can uniformly and finely disperse nickel particles in a wire substrate. The method for producing a nickel composite powder according to the present invention involves thermally spraying a silver-nickel composite material and rapidly cooling it, thereby uniformly dispersing nickel particles in a spherical shape into a twill base. Moreover, it is a method for producing finely dispersed and solidified wolf-nickel composite powder.
次に本発明による銀−ニッケル複合粉末の製造方法の具
体的な実施例を図面に基づいて説明する。Next, a specific example of the method for producing a silver-nickel composite powder according to the present invention will be described based on the drawings.
第１図において１は１．５◇畑の狼−１０重量％ニッケ
ルの複合素線で、この複合繁線１は電解銀粉とニッケル
カーボニル粉を混合し、これを容器に充填し圧縮した後
電気炉にて９００℃１時間加熱して嫌結体とし、この嫌
絹体に伸線加工を施して製作したものである。In Figure 1, 1 is a composite wire of 1.5 ◇ Field Wolf - 10% by weight nickel, and this composite wire 1 is made by mixing electrolytic silver powder and nickel carbonyl powder, filling it in a container, compressing it, and then applying electricity. It was produced by heating it in a furnace at 900°C for 1 hour to make it resistant to coagulation, and then subjecting this silk resistant material to wire drawing.
このようにして製作した複合素線１を２本同時に図示の
如く電気式金属溶射機２に導入し、噴出口３の尖端部に
て函弧を連続的に発生させてその熱により複合秦線１を
溶融状態にし、水櫓４中に噴出し、急冷することにより
銀一ニッケル複合粉末を得た。かようにして得られた銭
−ニッケル複合粉末は、非常に微細でその粒子の組繊は
狼基体中にニッケル粒子が均一且つ微細に分散している
ものである。Two of the composite wires 1 produced in this way are simultaneously introduced into an electric metal spraying machine 2 as shown in the figure, and a box arc is continuously generated at the tip of the spout 3, and the heat is used to form a composite wire. A silver-nickel composite powder was obtained by making 1 into a molten state, squirting it into a water tower 4, and rapidly cooling it. The nickel-nickel composite powder thus obtained is very fine, and its particle structure is such that nickel particles are uniformly and finely dispersed in the nickel matrix.
然して本発明の製造方法によって得られた銀一ニッケル
複合粉末と従来の製造方法によって得られた銀−ニッケ
ル混合粉末とを用いて電気接点を製作し、夫々の鷲見接
点について耐溶着試験を行なった。However, electrical contacts were manufactured using a silver-nickel composite powder obtained by the manufacturing method of the present invention and a silver-nickel mixed powder obtained by a conventional manufacturing method, and a welding resistance test was conducted on each Washimi contact. .
その試険結果を第２図に示す。これは溶着するまでの開
閉回数を表わしたもので、図中試料舷．１〜５は実施品
、６〜１０は従釆品である。またその時の試験条件は電
圧（直流）１００ｙ「電気９８Ｌ通電時間０．１秒、通
電後の休止時間１１。朝酸であった。第３図の試験結果
で判るように本発明の製造方法によって得られた銀山ニ
ッケル複合粉末にて作った電気接点は、従来の製造方法
によって得られた銀−ニッケル混合粉末にて作った鰭気
接点に比し、約１．５〜２倍の耐溶着性を有するもので
ある。The test results are shown in Figure 2. This represents the number of openings and closings until welding occurs, and is shown on the side of the sample in the figure. 1 to 5 are actual products, and 6 to 10 are subsidiary products. The test conditions at that time were 100 y of voltage (DC), 98 L of electricity, 0.1 second of energization time, and 11 seconds of rest after energization. The electrical contacts made with the obtained silver-nickel composite powder have about 1.5 to 2 times the adhesion resistance of the fin contacts made with the silver-nickel mixed powder obtained by the conventional manufacturing method. It has the following.
以上詳述したとおり本発明の製造方法により製造される
銀−ニッケル複合粉末は「銀基体中にニッケルが均一且
つ微細に分散しているので電気俊点材料として用いた場
合には、耐溶着性の点で高い信頼性が得られ、その工業
的利用価値は大きなるものである。As detailed above, the silver-nickel composite powder produced by the production method of the present invention has ``nickel uniformly and finely dispersed in the silver base, so when used as an electrical bonding point material, it has good adhesion resistance. High reliability can be obtained in this respect, and its industrial utility value is great.
第１図は本発明による銀−ニッケル複合粉末の製造方法
を示す概略図「第２図は本発明の製造方法によって得ら
れた銀−ニッケル複合粉末にて作った電気接点と従来方
法によって得られた銀−ニッケル混合粉末にて作った電
気接点との耐溶着試験結果を示すグラフである。
１…・・・銀−ニッケル複合素線、２・・・…電気式金
属溶射機、３…・・・噴出口、４・・・・・・水槽。
久イ図久２図Figure 1 is a schematic diagram showing the method for producing silver-nickel composite powder according to the present invention. 1 is a graph showing the results of a welding resistance test with an electrical contact made from a silver-nickel mixed powder. 1... Silver-nickel composite wire, 2... Electric metal spraying machine, 3... ... spout, 4... water tank. Kui Zukyu 2
Claims (1)
た銀−ニツケル粉を急速に冷却する工程とから成る銀−
ニツケル複合粉末の製造方法。1 Silver-nickel composite material consisting of a process of thermal spraying a silver-nickel composite material and a process of rapidly cooling the sprayed silver-nickel powder
Method for producing nickel composite powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51135515A JPS6017801B2 (en) | 1976-11-11 | 1976-11-11 | Method for producing silver-nickel composite powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51135515A JPS6017801B2 (en) | 1976-11-11 | 1976-11-11 | Method for producing silver-nickel composite powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5360360A JPS5360360A (en) | 1978-05-30 |
| JPS6017801B2 true JPS6017801B2 (en) | 1985-05-07 |
Family
ID=15153555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP51135515A Expired JPS6017801B2 (en) | 1976-11-11 | 1976-11-11 | Method for producing silver-nickel composite powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6017801B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56127702A (en) * | 1980-03-11 | 1981-10-06 | Tanaka Kikinzoku Kogyo Kk | Production of composite electric contact material |
| JPS56142803A (en) * | 1980-04-03 | 1981-11-07 | Tanaka Kikinzoku Kogyo Kk | Preparation of composite powder |
| JPS5763648A (en) * | 1980-10-02 | 1982-04-17 | Tanaka Kikinzoku Kogyo Kk | Manufacture of ag-ni composite electrical contact material |
| JPS59129701A (en) * | 1983-01-13 | 1984-07-26 | Tanaka Kikinzoku Kogyo Kk | Production of powder of metal or nonmetal or alloy thereof |
| JPS59129702A (en) * | 1983-01-13 | 1984-07-26 | Tanaka Kikinzoku Kogyo Kk | Production of powder of metal or nonmetal or alloy thereof |
-
1976
- 1976-11-11 JP JP51135515A patent/JPS6017801B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5360360A (en) | 1978-05-30 |
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