Fine hollow particles of metals and metal alloys and their produ

Details Fine hollow particles of metals and metal alloys and their produ Fine hollow particles of metals and metal alloys and their produ

1988-10-26

1991-06-18

Morris, Theodore

Specialized metallurgical processes, compositions for use therei

Processes

Producing solid particulate free metal directly from liquid...

75255, B22F 906

Patent

active

050246950

ABSTRACT:
Soluble gas is introduced in a melt material which is then atomized and rapidly cooled. The cooling drives the gas from solution, further disintegrating the atomized material to an ultra-fine powder. In one embodiment the atomization and rapid cooling are effected using a gas atomization die. Introduction of the soluble gas may be effected by addition of reactive constituents to the melt, for reactively forming such gas. Finer powders with desirable metallurgical properties are formed using a metallic melt.

REFERENCES:
patent: 4021167 (1977-05-01), Niimi et al.
patent: 4162914 (1979-07-01), Cremer
patent: 4548767 (1985-10-01), Hendricks
patent: 4565571 (1986-01-01), Abbaschian
patent: 4626278 (1986-12-01), Kenney et al.

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