Method of collecting plasma synthesize ceramic powders

Details Method of collecting plasma synthesize ceramic powders Method of collecting plasma synthesize ceramic powders

1990-06-26

1991-12-17

Roy, Upendra

Specialized metallurgical processes, compositions for use therei

Processes

Producing or purifying free metal powder or producing or...

75345, 148 206, B22F 914, C23C 1500

Patent

active

050731939

ABSTRACT:
A system for producing ceramic or cermet material in a plasma type thermal reactor wherein a reactor flame and reactants are introduced into one end of a reaction chamber through which a concentric film of collecting liquid (oil) flows and empties at the opposite end into a pool of collecting liquid. The collecting (and cooling) liquid enters the chamber at the same end the flame enters and forms a liquid wall surrounding the flame that sweeps substantially the whole inner periphery of the walls of the chamber from one end to the opposite end and empties into the pool of collecting (and cooling) liquid. Liquid from the pool is recirculated back to the one end and is filtered to remove the particulate formed from the reactants.

REFERENCES:
patent: 4289952 (1981-09-01), Haggerty
patent: 4533382 (1985-08-01), Miura et al.
patent: 4619691 (1986-10-01), Araya et al.
patent: 4756746 (1988-07-01), Kemp, Jr. et al.
patent: 4769064 (1988-09-01), Buss et al.
patent: 4872905 (1989-10-01), Bourne et al.
"RF Plasma System for the Production of Ultra-Fine Ultra-Pure Silicon Carbide" Hallbough, Journal of Material Science, vol. 18, 1983, 3190-3194.
"Synthesis of Ultrafine SiC Powders by Laser-Driven Gas Phase Reaction" Suyama et al., Ceramics Bul, vol. 64, vol. 10, 1985.
Produzione di Carburo di Silico-B Poluere Ultrafine per Sintesi di Plasma Ode Pous-Battelle Ceramica Intermacrore, vol. 13, 1978.

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