Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Patent
1979-08-17
1982-04-13
Hunt, Brooks H.
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
75208CS, 264111, 313141, 313144, B22F 300, B22F 302, B22F 704
Patent
active
043245889
ABSTRACT:
This invention relates to an arc erosion-resistant composite material and methods for its manufacture and, more specifically, composite arc erosion resistant materials useful as electrodes in spark plug and jet engine igniters to promote longer useful life. An arc resistant material in particulate form is dispersed throughout a lower melting matrix metal clad in a tube of nickel or nickel alloy, and then worked to a very small outside diameter, after which the composite may be cut to provide electrode elements. Ruthenium and iridium, and their alloys comprise the arc erosion resistant material. Suitable matrix metals comprise silver, gold, copper, nickel, and palladium.
REFERENCES:
patent: 2365083 (1944-12-01), Jarrett
patent: 2862844 (1958-12-01), Luedeman
patent: 3496622 (1970-02-01), Berghout et al.
patent: 3498763 (1970-03-01), Savage
patent: 3868530 (1975-02-01), Eaton et al.
patent: 4048705 (1977-09-01), Blanpain et al.
patent: 4093887 (1978-06-01), Corbach et al.
Stephans Robert
Zysk Edward D.
Crowe John E.
Engelhard Corporation
Genoni Kenneth A.
Hunt Brooks H.
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