Silver and Silver Alloy Electrical Contact Materials although in organic atmosphere is inert, but very easy to sour atmosphere corrosion and vulcanization. Improve the silver sulfide resistant performance is through the alloying method, such as add gold and palladium can reduce the speed of silver sulfide film formation. In addition, a lot of base metal elements such as manganese, antimony, tin, germanium, arsenic, gallium, indium, aluminum, zinc, nickel, vanadium in silver also can improve its resistance to cure performance. Silver base electrical contact materials is a lot of more phyletic, alloy state, useful also powder metallurgy method to make false alloy, the purpose is strengthening, wear and improve the electric contact property, etc. For different purposes, often join a variety of group yuan. In the alloy type small power sliding contact materials, ChangJiaJin manganese, iridium, bismuth, aluminum, lead or thallium, etc., in order to increase abrasion resistance. Silver alloy solder is precious metal brazing filler metal in most, of the most widely, the largest amount of brazing filler metal. For brazing alloy main requirements are welding temperature, melt flow point, infiltrating and weld strength, etc. As brazing filler metal silver alloy may be added to copper, zinc, cadmium, manganese, tin, indium and alloy elements, to improve the welding performance.
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