Laser melt spin atomized metal powder and process

Details Laser melt spin atomized metal powder and process Laser melt spin atomized metal powder and process

1983-12-05

1984-11-13

Stallard, W.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

264 8, 264 10, 264 12, B22D 2308

Patent

active

044823754

ABSTRACT:
A method of producing rapidly solidified metal powder utilizes a spinning metal source and a laser beam to melt the surface layer of the source and atomize it. The laser beam is directed at a glancing angle along the surface of the spinning metal source. The source spins at a high speed of 10,000-30,000 revolutions per minute. The atomized metal is solidified rapidly in an inert gas atmosphere. Very high cooling rates up to 10.sup.6 .degree. C. per second can be achieved. Very small and uniformly distributed particles of rapidly solidified metal can be obtained having a narrow particle size distribution from about 50-150 microns and typically having a high percentage of the particles at a particle size of below 100 microns.

REFERENCES:
patent: 4014964 (1977-03-01), Probst et al.
patent: 4218410 (1980-08-01), Stephan et al.
patent: 4374075 (1983-02-01), Yolton et al.

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