Manufacture and use of engineered carbide and nitride composites
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United States of America Patent
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Mar 1, 2011
Grant Date -
Aug 13, 2009
app pub date -
Apr 16, 2009
filing date -
Oct 29, 2003
priority date (Note) -
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Abstract
Precursor materials and methods of making are disclosed. The precursor materials include at least one of a silica source, and a carbon source, with or without liquid and a binder The methods described include pyrolyzing the precursor material to form a carbonaceous mixture and heat treating the mixture for a pre-determined time and at an elevated temperature during which carbon and/or nitrogen react with silica in the mixture to form carbides and/or nitrides. The carbides and nitrides formed from said methods 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.
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