Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group vib metal
Patent
1994-12-22
1995-11-21
Bos, Steven
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group vib metal
423593, C01G 4100, C01G 300
Patent
active
054684579
ABSTRACT:
A method of making a tungsten-copper composite oxide wherein an amount of an oxide of tungsten and an amount of an oxide of copper are combined to form a mixture, the oxide of tungsten or the oxide of copper, or both, being in a hydrated form. The mixture is then milled, dehydrated and fired at a temperature and for a time sufficient to form the tungsten-copper composite oxide, the time sufficient to form the tungsten-copper composite oxide being at least about one-half the time sufficient to form the tungsten-copper composite oxide from a mixture of tungsten trioxide, WO.sub.3, and cupric oxide, CuO, under substantially similar conditions.
REFERENCES:
V. V. Skorokhod et al., Reaction in the Cu-W-O System, Journal of Inorganic Materials of the Russian Academy of Sciences, vol. 20, No. 3, pp. 458-460 (1984), Mar.
A. K. Basu, F. R. Sale, Copper-tungsten Composite Powders by the Hydrogen Reduction of Copper Tungstate, Journal of Materials Science, 13 (1978) pp. 2703-2711, no month.
Q. Chongliang et al., A Study on Fine Grain W-Cu Electrode Material with High Homogeneity, Proceedings of the 13th International Plansee Seminar, Metallwerk Plansee, vol. 1, pp. 461-470 (1993), no month.
V. V. Skorokhod et al., Theory and Technology of Sintering, Thermal, and Chemicothermal Treatment Processes, Poroshkovaya Metallurgiya, No. 9 (249), pp. 9-13 (1983), Sep.
Dorfman Leonid P.
Houck David L.
Kopatz Nelson E.
Scheithauer Michael J.
Bos Steven
Clark Robert F.
Osram Sylvania Inc.
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