Specialized metallurgical processes – compositions for use therei – Compositions – Loose particulate mixture containing metal particles
Patent
1997-02-24
1999-11-02
Mai, Ngoclan
Specialized metallurgical processes, compositions for use therei
Compositions
Loose particulate mixture containing metal particles
75246, 75331, 419 38, C22C 3300
Patent
active
059762160
ABSTRACT:
Powder metallurgically produced ferritic stainless steel articles are strengthened by alloying the ferritic material with a small amount of nickel (up to 3.0% by weight). Alloying is carried out by either admixing nickel powder to the ferritic alloy powder or by pre-alloying the stainless steel powder with nickel. Conventional sintering procedures, either in a hydrogen atmosphere or in a partial vacuum, are applicable. High strength stainless steel parts made in this manner are suitable for demanding applications, including automotive exhaust flanges and HEGO bosses.
REFERENCES:
patent: 4049429 (1977-09-01), Donachie
patent: 4139377 (1979-02-01), Bergh et al.
patent: 4552719 (1985-11-01), Morimoto et al.
patent: 4662939 (1987-05-01), Reinshagen
patent: 5529604 (1996-06-01), Reinshagen
patent: 5629091 (1997-05-01), Rao et al.
Klar Erhard
Samal Prasan K.
Mai Ngoclan
OMG Americas, Inc.
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