Specialized metallurgical processes – compositions for use therei – Processes – Producing or purifying free metal powder or producing or...
Patent
1991-09-30
1994-03-15
Wyszomierski, George
Specialized metallurgical processes, compositions for use therei
Processes
Producing or purifying free metal powder or producing or...
75346, 75 101, B22F 914
Patent
active
052942422
ABSTRACT:
A metal powder is produced by atomizing molten metal in an electric arc spray gun and rapidly quenching the resulting droplets in a liquid cryogen to form fine, highly spherical, oxide-free particles. The rapid quenching yields particles with a very fine, uniform microstructure which melt rapidly and uniformly when later heated. The powder is especially well-suited for making solder paste for device fabrication in the electronics industry.
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Berger Kerry B.
Swan Robert B.
Zurecki Zbigniew
Air Products and Chemicals
Fernbacher John M.
Marsh William F.
Simmons James C.
Wyszomierski George
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