Contact for vacuum interrupter

Details Contact for vacuum interrupter Contact for vacuum interrupter

1979-05-23

1981-11-24

Hunt, Brooks H.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

428567, 428568, 75248, B22F 700

Patent

active

043025145

ABSTRACT:
A contact for a vacuum interrupter has excellent characteristics of high withstand voltage, low melt bonding property, large current durability and low chopping current and is prepared by uniformly distributing, in a copper matrix, two kinds of high melting point metal powders having a melting point of higher than 1450.degree. C. which have different particle diameters of (1) 80-300 .mu.m and (2) less than 30 .mu.m. The low chopping current characteristic is imparted by incorporating more than 10 wt. % of the high melting point metal powder. The high melting point metal powder can be selected from the group consisting of Cr, W, Mo, Ir and Co.

REFERENCES:
patent: 2983996 (1961-05-01), Neely et al.
patent: 3382066 (1968-05-01), Kenney et al.
patent: 3929424 (1975-12-01), Krock et al.
patent: 4123265 (1978-10-01), Takahashi et al.

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