Method for manufacturing electrode material for vacuum circuit b

Details Method for manufacturing electrode material for vacuum circuit b Method for manufacturing electrode material for vacuum circuit b

1998-03-20

1999-11-16

Willis, Prince

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75623, 420428, 420590, C22B 900, C22B 3430, C22C 2706, C22C 100

Patent

active

059850000

ABSTRACT:
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.

REFERENCES:
patent: 4537745 (1985-08-01), Hassler et al.
patent: 5480472 (1996-01-01), Noda et al.
patent: 5636241 (1997-06-01), Yamada et al.

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