Refractory carbide particles with thin outer layer of highly cry

Details Refractory carbide particles with thin outer layer of highly cry Refractory carbide particles with thin outer layer of highly cry

1965-12-22

1976-03-23

Pendegrass, Verlin R.

Work holders

Operator supported

176 91SP, G21C 2100

Patent

active

039456293

ABSTRACT:
A method of making refractory carbide particles, which method comprises heating a granule containing refractory metal and carbon to a sufficient temperature to form a molten droplet of refractory carbide, carbon being included in said droplet in excess of the stoichiometric amount which combines with the refractory metal in the highest usual valence thereof, and cooling said molten droplet below the eutectic temperature within 60 seconds or less to cause a thin continuous layer of highly crystalline carbon to precipitate out on the outer surface thereof.

REFERENCES:
patent: 1829950 (1931-11-01), Voiztlander et al.
patent: 3129188 (1964-04-01), Sawman et al.
patent: 3163609 (1964-12-01), Sawman et al.
patent: 3179722 (1965-04-01), Shoemaker
patent: 3179723 (1965-04-01), Goeddel

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