Process for producing fine powders by hot substrate microatomiza

Details Process for producing fine powders by hot substrate microatomiza Process for producing fine powders by hot substrate microatomiza

1991-05-17

1992-06-23

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Spheroidizing or rounding of solid particles

65 213, 75342, 164 46, 264 5, 264500, 425 6, B29B 902

Patent

active

051240912

ABSTRACT:
A process for producing fine powder, which includes entraining a starting powder material in a carrier gas, injecting the starting powder material using the carrier gas into a high temperature jet to form a high velocity stream of molten droplets, fragmenting the resulting high velocity molten droplets by impacting against a substrate wherein the temperature of the substrate is above the melting point of the powder material, to form smaller droplets, and allowing the resulting fragmented smaller droplets to spheroidize and solidify in flight.

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patent: 5076991 (1991-12-01), Poole et al.
H. Hohmann, et al., "Metal Powder Production by Ultrasonic Capillary or Standing Wave Technique (Modern Developments In. Powder Metallurgy" Eds. P. Ulf Gummeson D. A. Gustopson, 1988, vol. 20, pp. 159-167.

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