Refractory ceramic compositions and method for preparing same

Details Refractory ceramic compositions and method for preparing same Refractory ceramic compositions and method for preparing same

1975-02-11

1976-07-13

Garvin, Patrick P.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 57, 106733, C04B 3566, C04B 3568, C04B 3570, C04B 3548

Patent

active

039691233

ABSTRACT:
This invention relates to ceramic compositions of tungsten and tantalum oxides including 0 to 33 1/3 mole percent of a metal oxide such as hafnia. These ceramics are characterized by melting points greater than about 1400.degree.C and selectively controlled coefficients of thermal expansion of essentially zero to a negative value in the temperature range of 20.degree. to 1000.degree.C.

REFERENCES:
patent: 2802748 (1957-08-01), Glaser
patent: 3699044 (1972-10-01), Dosch
patent: 3706583 (1972-12-01), Fletcher
patent: 3736160 (1973-05-01), Hamling
patent: 3795522 (1974-03-01), Fox

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