| 摘要 |
PURPOSE:To obtain a contact material for electric apparatus with low contact resistance and superior welding resistance by incorporating tin oxide and zinc oxide or indium oxide into silver and by further incorporating copper as a component. CONSTITUTION:A mother alloy is prepd. by adding tin, zinc and copper to silver or tin, indium and copper to silver. The mother alloy is powdered, internally oxidized, sintered, and worked to obtain a contact material. The total amount of tin and zinc or indium to be added to silver before internal oxidation is about 2-20wt%, and the amount of copper is 0.2-3wt%. |
