C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
261/1
C04B 35/56 (2006.01) C04B 35/563 (2006.01) C04B 35/58 (2006.01)
Patent
CA 1336983
A boron carbide/titanium diboride composite ceramic powder is disclosed produced by mixing boron carbide and a titanium source, such that the average reactant particle size is less than 20 micrometers and substantially all discrete reactant areas are less than 50 micrometers, followed by heating the mixture wherein the boron carbide particles form substrates to which the titanium diboride particles are attached. The resulting powder has boron carbide and titanium diboride particles less than 20 micrometers in diameter. This powder can then be densified to form a part wherein the titanium diboride grains have an average size of less than 20 micrometers and the boron carbide grains having an average size of less than 50 micrometers. Because of the uniformity of initial dispersion, the densified part shows a microstructure that is also very uniform in distribution of boron carbide and titanium diboride.
600023
Khazai Bijan
Moore William G.
Smart & Biggar
The Dow Chemical Company
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