Method of making monotunsten carbide and mixtures of monotungste

Details Method of making monotunsten carbide and mixtures of monotungste Method of making monotunsten carbide and mixtures of monotungste

1991-08-13

1992-11-24

Straub, Gary P.

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

51307, 423440, C04B 3556, C01B 3130, C01B 3134, C09C 168

Patent

active

051661039

ABSTRACT:
A process for production of high surface area, sub-micron size, monotungsten carbide and mixtures of monotungsten carbide-titanium carbide by reacting a mixture of tungsten oxide (or APT), titanium oxide and carbon powders in a mixing reactor. When the temperature in the reactor reaches reaction temperature a vacuum is applied. The charge is kept under a high vacuum until the reaction is complete, and is agitated to enhance the release of carbon monoxide. The products typically contain in excess of 99% carbides, have a surface area greater than 4.2 m.sup.2 /g for mixture at monotungsten carbide and titanium carbide, and an average particle size between 0.2 and 0.5 microns.

REFERENCES:
patent: 2800393 (1957-07-01), Mettler
patent: 3892644 (1975-07-01), Borg et al.
patent: 4008090 (1977-02-01), Miyake et al.
patent: 4664899 (1987-05-01), Kimmel et al.

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