Tungsten carbide-cobalt flame spray powder and method

Details Tungsten carbide-cobalt flame spray powder and method Tungsten carbide-cobalt flame spray powder and method

1976-04-08

1977-05-24

Stallard, W.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

428546, 75252, 106 1, 75 5AC, 75 5BC, B22F 100, C23C 700

Patent

active

040253341

ABSTRACT:
Tungsten carbide-cobalt agglomerated flame spray powder is produced by spray drying a slurry of particles in an aqueous cobalt nitrate solution. The agglomerates are classified according to size and the out-of-size agglomerates are recycled. The classified agglomerates are heated in flowing hydrogen, to reduce the nitrate to cobalt metal, and then sintered to strengthen the agglomerates for subsequent flame spraying.

REFERENCES:
patent: 3211386 (1965-10-01), Frehn
patent: 3305326 (1967-02-01), Longo
patent: 3419415 (1968-12-01), Dittrich
patent: 3606359 (1971-09-01), McCormick
patent: 3890137 (1975-06-01), Beyer et al.
patent: 3907546 (1975-09-01), Port et al.
patent: 3936295 (1976-02-01), Cromwell et al.

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