Specialized metallurgical processes – compositions for use therei – Compositions – Loose particulate mixture containing metal particles
Patent
1987-11-16
1989-06-06
Brody, Christopher W.
Specialized metallurgical processes, compositions for use therei
Compositions
Loose particulate mixture containing metal particles
B22F 100
Patent
active
048368504
ABSTRACT:
A powdered material and a process for producing the material are disclosed. The powdered material consists essentially of iron group based and chromium based spherical particles. The material is essentially free of elliptical shaped material and elongated particles having rounded ends. The material has a particle size of less than about 20 micrometers. The process for making the spherical particles involves mechanically reducing the size of a starting material to produce a finer powder the major portion of which has a particle size of less than about 20 micrometers. The finer powder is entrained in a carrier gas and passed through a high temperature zone at a temperature above the melting point of the powder to melt at least about 50% by weight of the powder and form the spherical particles of the melted portion. The powder is then directly solidified.
REFERENCES:
patent: 4264354 (1981-04-01), Cheetham
patent: 4264641 (1981-04-01), Mahoney et al.
patent: 4711660 (1987-12-01), Kemp, Jr. et al.
patent: 4711661 (1987-12-01), Kemp, Jr. et al.
patent: 4731111 (1988-03-01), Kopat et al.
patent: 4756746 (1986-06-01), Cheney et al.
Johnson Walter A.
Kemp, Jr. Preston B.
Brody Christopher W.
Castle Donald R.
GTE Products Corporation
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