Method of making distributor rotor electrode containing dielectr

Details Method of making distributor rotor electrode containing dielectr Method of making distributor rotor electrode containing dielectr

1978-09-14

1980-09-23

Hunt, Brooks H.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75212, 75213, 252512, 123633, 200 24, B22F 500

Patent

active

042240689

ABSTRACT:
This invention relates to an improved method of making a distributor rotor electrode wherein dielectric particles are dispersed in an electrically conductive metal matrix for suppressing radio frequency intereference. More particularly, the invention relates to a method of making such electrodes wherein a mixture comprised of silica and copper oxide is fused into a solid material which is then comminuted into powder particles 50 microns in size, or less, and having irregular shapes. The powder particles themselves are comprised of a microscopic interspersion of a silica based phase and a copper oxide based phase. These powder particles are thereafter combined with a powder of an electrically conductive metal to form a uniform second mixture comprising about 0.5 to 15 weight percent silica. The second mixture is then pressed in a compact for a rotor electrode body and sintered to form a wear resistant densified rotor electrode.

REFERENCES:
patent: 3085876 (1963-04-01), Alexander et al.
patent: 3730706 (1973-05-01), Buescher et al.
patent: 3802892 (1974-04-01), Pirooz
patent: 4072771 (1978-02-01), Grier
patent: 4077378 (1978-03-01), Okumura
patent: 4130671 (1978-12-01), Nagesh et al.
patent: 4135066 (1979-01-01), Yamanaka et al.

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