Abstract: The present invention is to provide metal material for electric/electronic devices, which is comprised of 20 to 50 mass % of Ag or 20 to 50 mass % of Pd to 10 to 40 mass % of Cu, 5 to 30 mass % of Co, said alloy has low contact resistance, good oxidation resistance, high hardness, good workability, and low wettability and anti-erosion property to Sn alloy solder.

Abstract: [Problem to be solved] For an Ag—CuO alloy based electrode material for thermal fuses, rolling workability is significantly decreased as the content of CuO is increasing, and the reduction of a plate thickness is difficult in the rolling process after internal oxidation. [Solution] An electrode material for thermal fuses comprising 50 to 99 mass % of Ag and 1 to 50 mass % of Cu is provided, the material having a structure in which an internal oxidation layer is formed at each of the front and back surfaces, and having a non-oxidized layer in the central portion.

Abstract: Although an Ag—CdO-based material has excellent electric properties such as deposition resistance, arc resistance and low contact resistance, which are required for an electric contact, the discharge standard provision in Japan, EC Directive on Waste from Electrical and Electronic Equipment (WEEE) and the like have been directed toward disuse of Cd, as already known. Thus, the present invention is characterized in that after an atmosphere in a pressured oxidation furnace is replaced with oxygen, the temperature of an internal-oxidative Ag alloy prepared under a condition of a cold roll rate of 50 to 95% is gradually raised from a temperature of 200° C. or less in a pressured oxygen atmosphere with an oxygen pressure of 5 to 50 kg/cm2 and internal oxidation processing is performed with an upper limit temperature of 700° C.

Abstract: Although an Ag—CdO-based material has excellent electric properties such as deposition resistance, arc resistance and low contact resistance, which are required for an electric contact, the discharge standard provision in Japan, EC Directive on Waste from Electrical and Electronic Equipment (WEEE) and the like have been directed toward disuse of Cd, as already known. Thus, the present invention is characterized in that after an atmosphere in a pressured oxidation furnace is replaced with oxygen, the temperature of an internal-oxidative Ag alloy prepared under a condition of a cold roll rate of 50 to 95% is gradually raised from a temperature of 200° C. or less in a pressured oxygen atmosphere with an oxygen pressure of 5 to 50 kg/cm2 and internal oxidation processing is performed with an upper limit temperature of 700° C.

Abstract: An object is to provide a thermal fuse that is free of a trouble of welding contact between a movable electrode (4) and a lead (2) even when temperature of an equipment to which the thermal fuse is connected rises gradually and that has small electric resistance at the time of conduction.

Abstract: An object is to provide a thermal fuse that is free of a trouble of welding contact between a movable electrode (4) and a lead (2) even when temperature of an equipment to which the thermal fuse is connected rises gradually and that has small electric resistance at the time of conduction.