Process for the preparation of alloy powders which can be sinter

Details Process for the preparation of alloy powders which can be sinter Process for the preparation of alloy powders which can be sinter

1981-05-04

1983-02-15

Stallard, W.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

C22B 504, C22B 3412, C22C 104

Patent

active

043739474

ABSTRACT:
A process is disclosed for the preparation of alloy powders, which can be sintered and which are based on titanium, by the calciothermal reduction of the oxides of the metals forming the alloys in the presence of neutral additives. This can be accomplished by mixing TiO.sub.2 with oxides of the other components of the alloy, admixing an alkaline earth oxide or carbonate with the metal oxides, calcining the mixture. After cooling, the mixture is crushed and calcium is added. Thereafter, green compacts are formed which are heated and leached to remove the calcium oxide. The powder obtained is of uniform structure composition, is free of segrations of oxides nitrides carbides and/or hydrides and has high bulk and tap densities and can be molded by isostatic hot molding.

REFERENCES:
patent: 2287771 (1942-06-01), Alexander
patent: 2800404 (1957-07-01), Rostron et al.
patent: 2834667 (1958-05-01), Rostron
patent: 2922712 (1960-01-01), Raney
patent: 2984560 (1961-05-01), Dombrowski

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