Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1986-10-14
1987-11-10
Stallard, Wayland
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 05BA, 75 05BB, 75 05BC, 75 05C, 264 15, B22F 900
Patent
active
047055600
ABSTRACT:
A process is disclosed for producing essentially spherical metallic powder particles. The process involves mechanically agglomerating a mixture comprising powders wherein the powders are selected from the group consisting of metals, metal alloys, metal-ceramic composites, ceramics, and wherein at least one of the powders is a relatively ductile and/or malleable metal. The resulting mechanically agglomerated powder particles are entrained in a carrier gas and passed through a high temperature zone at a temperture above the melting point of the lowest melting component of the mixture to melt at least about 50% by weight of the mechanically agglomerated particles and form essentially spherical powder particles of the melted portion, followed by resolidifying the resulting high temperature treated material.
REFERENCES:
patent: 3776704 (1973-12-01), Benjamin
patent: 3778249 (1973-12-01), Benjamin
patent: 3809545 (1974-05-01), Benjamin
Johnson Walter A.
Kemp, Jr. Preston B.
Steigelman James Q.
Castle Donald R.
GTE Products Corporation
Quatrini L. Rita
Stallard Wayland
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