Compositions – Electrically conductive or emissive compositions – Metal compound containing
Patent
1983-09-03
1987-03-03
Bell, Mark L.
Compositions
Electrically conductive or emissive compositions
Metal compound containing
501 96, 501 98, 252520, C04B 3558, C04B 3510
Patent
active
046474056
ABSTRACT:
A dense essentially non-porous composite ceramic material of a diboride of group IVa metal, preferably titanium, and alumina in a 3:5 mole ratio has a macroscopically uniform structure made up of non-uniformly dispersed agglomerates of alumina of random shapes and dimensions and a fibrous sponge-like electrically conductive structure of submicronic grains of the group IVa metal boride in intimate wetting contact with the alumina agglomerates. The material is made by reaction hot pressing of coarse grain precursor powders.
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Bell Mark L.
Eltech Systems Corporation
Freer John J.
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