Electric contact materials

Details Electric contact materials Electric contact materials

1982-04-12

1984-07-03

Hunt, Brooks H.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75237, 75238, 200205, 200206, 419 21, 419 10, B22F 300

Patent

active

044577800

ABSTRACT:
The invention relates to electric contact materials for use in switches, such as moulded circuit breakers, air circuit breakers, magnetic switches, etc.
The electric contact materials comprise 5-60 weight % iron group metals, 1-11 weight % graphite, 5-70 weight % refractory materials, and the residual part consisting of silver, said refractory materials being held in the state of dispersion in the iron group metals and/or silver, thereby providing welding resistance, wear resistance, and insulation resistance as well as high practical utility of low temperature rise.

REFERENCES:
patent: 2180956 (1939-11-01), Hensel
patent: 2234969 (1941-03-01), Hensel et al.
patent: 2319240 (1943-05-01), Larsen et al.
Jones, W. D., Fundamental Principles of Powder Metallurgy, 1960, pp. 766-773.

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