Fuji Electric Co., Ltd.

Katsuro Shiozaki

Hisaji Shinohara

Tatsuo Take

Shunichi Hatakeyama

Kazuro Shibata

Hiromi Iwai

Masayuki Furusawa

Tsuneki Shinokura

To provide a Cu-Cr alloy electrode material, a mixture of Cu and cr materials at a predetermined ratio is heated until the mixture has been entirely melted, and the molten metal obtained is quenched to precipitate fine Cr particles in a Cu base. Since Cr is melted into Cu before quenching, and then Cr precipitates, Cr particles finer than those in the sintering or infiltration method can disperse in a Cu base. This invention prevents defects such as voids in the structure and the weakening of the fusion of Cu and Cr or failure of Cr to precipitate into the Cu base caused by oxide films on the surface of the Cr particles, thereby providing a fine alloy structure.

Method for manufacturing electrode material for vacuum circuit breaker

Growing community of inventors

Saitama, Japan

Katsuro Shiozaki