METHOD FOR SURFACE ACTIVATION OF WATER ATOMIZED POWDERS

METHOD FOR SURFACE ACTIVATION OF WATER ATOMIZED POWDERS

A method for pickling and consolidating water atomized metallic powders to reduce surface oxides. The technique includes introducing the powder into an acid bath-preferably nitric acid and hydrofluoric acid, rinsing the powder, introducing the powder into an alkaline bath, rinsing the powder and the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LINDY JACK CURTIS, JON MICHAEL POOLE
Format: Patent
Sprache:eng
Schlagworte:
CASTING
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:A method for pickling and consolidating water atomized metallic powders to reduce surface oxides. The technique includes introducing the powder into an acid bath-preferably nitric acid and hydrofluoric acid, rinsing the powder, introducing the powder into an alkaline bath, rinsing the powder and then consolidating the powder into a workpiece. Alternatively, the powder can be additionally introduced into a second acid bath and/or placed into a finishing boric acid bath before consolidation.