Electrical contact materials and their production method

Details Electrical contact materials and their production method Electrical contact materials and their production method

H - Electricity

01

B

75/162, 75/1.2

H01B 1/02 (2006.01) C22C 32/00 (2006.01) H01H 1/0237 (2006.01)

Patent

CA 1236318

ABSTRACT OF THE DISCLOSURE: An aggregate and/or integrate comprising of silver and tin oxides and/or tin alloy oxides of 4 - 25 weight % which have been prepared to have the oxides dis- persed in the silver, are subjected to a temperature above the melting point of silver, whereby an electrical contact material made from said aggregate and/or integrate comes to have a continuous silver matrix as if produced by an inter- nal oxidation method and also to have such uniform disper- sion of the metal oxides in said silver matrix which is comparable or superior to that producible by a powder mettallurgical method. The above-mentioned heat treatment is accompanied with hammer or press forging resulting in dimensional reduction of the aggregate and/or integrate such as their shaping, upsetting, and drawing-down. The contact material has, in addition to an excellent elongation and high conductivity, much greater resistance to shock.

431990

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