Manufacture and use of engineered carbide and nitride...

C - Chemistry – Metallurgy – 04 – B

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Details

C04B 38/02 (2006.01) B32B 17/10 (2006.01) C04B 35/52 (2006.01)

Patent

CA 2753932

Carbides and nitrides are provided containing a controlled amount of pre- determined diluents and methods for their manufacture and use are disclosed. The carbides and nitrides with pre-determined diluents are formed by optionally pyrolyzing a precursor material to form a carbonaceous mixture and heat treating the carbonaceous mixture for a pre-determined time and at an elevated temperature during which carbon and/or nitrogen reacts with silica in the mixture to form carbides and/or nitrides and controlled amounts of pre- determined diluents. The carbides and nitrides disclosed herein may be used as blowing agents in a glass, ceramic, or metal forming processes or for promoting dispersion of the carbides and nitrides throughout a glass, ceramic, or metal composite.

L'invention porte sur des carbures et des nitrures contenant une quantité ajustée de diluants prédéfinis et sur des procédés pour leur fabrication et leur utilisation. Les carbures et les nitrures contenant des diluants prédéfinis sont formés par pyrolyse éventuelle d'une matière précurseur pour former un mélange carboné et traitement thermique du mélange carboné pendant un temps prédéfini et à une température élevée pendant lequel le carbone et/ou l'azote réagissent avec de la silice présente dans le mélange pour former des carbures et/ou des nitrures et des quantités ajustées de diluants prédéfinis. Les carbures et les nitrures de la présente invention peuvent être utilisés comme agents d'expansion dans des procédés de formage de verre, de céramique ou de métal ou pour favoriser la dispersion des carbures et des nitrures dans un composite de verre, de céramique ou de métal.

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