Refractory metal borides, carbides and nitrides and...

Details Refractory metal borides, carbides and nitrides and... Refractory metal borides, carbides and nitrides and...

C - Chemistry, Metallurgy

01

B

261/1, 23/11, 75

C01B 21/06 (2006.01) C01B 31/30 (2006.01) C01B 35/04 (2006.01) C04B 35/56 (2006.01) C04B 35/58 (2006.01) C04B 41/51 (2006.01) C04B 41/88 (2006.01) C25C 3/08 (2006.01) C01B 21/076 (2006.01)

Patent

CA 1220319

ABSTRACT OF THE DISCLOSURE Refractory metal borides, carbides, nitrides and mixtures thereof of the Group IVb, Vb and VIb metals are produced from a glass or microcrystalline gel formed from organo-metallic precursors. Typically TiO2.B2O3 glass is produced by hydrolysis of titanium butoxide and trimethyl borate, followed by gelling/ drying. The glass may have carbon inclusions or may be mixed with carbon or aluminum powder or a mixture thereof, and reacted. In the case of aluminothermic and carbo-aluminothermic reduction, there is a residual aluminum-containing phase in the product. Composites can also be produced by including inert materials in the reaction mixture.

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