Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Patent
1988-05-18
1991-03-19
Lechert, Jr., Stephen J.
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
75247, 419 12, 419 23, 420464, 420497, 420502, 420505, 420503, C22C 2114
Patent
active
050007793
ABSTRACT:
The subject of this invention is the development of new alloys along with new processing approaches for the utilization of the alloys. A particular class of alloys comprises at least one noble metal selected from the group comprising gold, palladium, silver and copper and an amount of between about 0.20 weight percent and about 0.80 weight percent of at least one metalloid selected from the group of metalloids consisting of boron, phosphorous, silicon and lithium. Rapid solidification technology in powder fabrication and the addition of metalloids have been combined to produce a new class of palladium based alloys. The metalloid additions greatly increase the hardness, enhance the fine grain structure and aid sintering densification. Net-shape forming is a benefit derived from the characteristics of the new alloys.
REFERENCES:
patent: 2048648 (1936-07-01), Feussner et al.
patent: 2095890 (1937-10-01), Powell
patent: 2138599 (1938-11-01), Gwyn
patent: 4149883 (1979-04-01), Harmsen et al.
Platinum Metals Review, p. 44, 1988, vol. 32.
Agarwal Dwarika P.
Bourguignon Laura L.
Faroog Shaji
German Randall M.
Bhat N.
Dishong George W.
Leach & Garner
Lechert Jr. Stephen J.
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