Production of (Mo,W) C hexagonal carbide

Details Production of (Mo,W) C hexagonal carbide Production of (Mo,W) C hexagonal carbide

1982-10-05

1984-06-12

Doll, John

Chemistry of inorganic compounds

Carbon or compound thereof

Binary compound

420430, 501 93, C01B 3134

Patent

active

044541058

ABSTRACT:
Solid solutions of molybdenum and tungsten having molybdenum to tungsten atom ratios between about 1:1 and about 10:1 are produced by heating a mechanically milled mixture of a molybdenum oxide and tungsten oxide to a temperature between about 1000.degree. C. and about 1300.degree. C. at a rate of at least about 20.degree. C. per minute in a hydrogen-containing atmosphere and holding at temperature to reduce the oxides of molybdenum and tungsten and to provide a homogeneous solid solution of molybdenum and tungsten. The homogeneous solid solution is mixed with a stoichiometric excess of carbon and heated to a temperature between about 1200.degree. C. and about 1800.degree. C. under a protective atmosphere to react the carbon with the alloy powder to form a solid solution of hexagonal monocarbides.

REFERENCES:
patent: 4216009 (1980-08-01), Miyake et al.
patent: 4330332 (1982-05-01), Schachner et al.

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