Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Patent
1983-07-14
1985-02-26
O'Keefe, Veronica
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
75228, 75238, 148 166, 148 315, C22C 3902
Patent
active
045016135
ABSTRACT:
The invention provides a method for manufacturing a sintered body, which comprises the steps of preparing a green compact comprising 5 to 60% weight of a chromium-containing ferroalloy powder, 0.2 to 2% by weight of a graphite powder, and a balance consisting substantially of an iron powder; sintering the green compact to provide a sintered body; nitriding the sintered body; and treating the nitrided sintered body with steam. The sintered body after nitridation may by subjected to a heat treatment in a non-oxidizing atmosphere before being steam-treated. A wear resistant sintered body manufactured by this method is also provided.
REFERENCES:
Norm Sint, (Heat Treatment of Metal Parts), 1979 Edition.
O'Keefe Veronica
Tokyo Shibaura Denki Kabushiki Kaisha
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