Deoxidation treatment for atomized metal powder

Details Deoxidation treatment for atomized metal powder Deoxidation treatment for atomized metal powder

C - Chemistry, Metallurgy

23

F

C23F 1/38 (2006.01) B22F 1/00 (2006.01) C22C 1/04 (2006.01)

Patent

CA 2063139

PC-3162/1 DEOXIDATION TREATMENT OF ATOMIZED METAL POWDER ABSTRACT The invention provides a method for removing the oxide surface from water atomized metal powders containing an oxidizer capable of oxidizing chromium froma trivalent to a soluble hexavalent state, whereby chromium oxides are removed from the metal powder surface. The powder is then treated with a dilute acid solutionessentially devoid of hydrofluoric acid to remove other hydrated oxides from themetal powder surface. The powder is then water washed and dried.

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