Method for forming reinforced powder particles

Details Method for forming reinforced powder particles Method for forming reinforced powder particles

1992-12-04

1993-10-19

Theisen, Mary Lynn

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

By extrusion spraying or gravity fall through orifice

264 12, B29B 910

Patent

active

052542955

ABSTRACT:
A flowable slurry comprising powder matrix particles and reinforcing particles is pumped, under pressure, through an atomizing nozzle to form discrete droplets containing reinforcing particles coated with the powder matrix particles The discrete droplets are suspended in an elevated temperature environment for a sufficient time to evaporate the water from the droplets and form nonreacted reinforced powder particles. The reinforced powder particles are nonagglomerated and are suitable for immediate use as powder for thermal spray coatings or for dry processed compacted structural components.

REFERENCES:
patent: 4361624 (1982-11-01), Spivack
patent: 4638029 (1987-01-01), Meschke et al.
patent: 4867931 (1989-09-01), Cochran, Jr.
patent: 4981511 (1991-01-01), Schmidberger et al.
patent: 5080977 (1992-01-01), Zaplatynsky
patent: 5171489 (1992-12-01), Hirao et al.
Article entitled "Process Requirements for Plasma Sprayed Coatings for Internal Combustion Engine Components" by W. f. Calosso and A. R. Nicoll (from The American Society of Mechanical Engineers--1987).

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