Process for retarding spontaneous combustion of powdery mixtures

Details Process for retarding spontaneous combustion of powdery mixtures Process for retarding spontaneous combustion of powdery mixtures

1997-04-29

1998-10-20

Mai, Ngoclan

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Powder pretreatment

419 22, 419 38, B22F 100

Patent

active

058261591

ABSTRACT:
The sinterability of a copper/tungsten green compact is improved by using copper oxide, tungsten oxide or both as the copper and/or tungsten source. Sinterability is further enhanced by including steam in the sintering atmosphere. Spontaneous combustion of the source powders used to form the sintering compacts can be reduced or eliminated by including corrosion inhibitor in the powders.

REFERENCES:
patent: 4395294 (1983-07-01), Hobbins et al.
patent: 4731128 (1988-03-01), Casullo
patent: 4781980 (1988-11-01), Yoshitake et al.
patent: 5094686 (1992-03-01), Kawakami et al.
patent: 5439638 (1995-08-01), Houck et al.

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