Manufacture and use of engineered carbide and nitride composites

US7897534B2 · kind B2 · utility

Assignee

• James Hardie Technology Limited · IE

Inventors

• Giang Biscan · Fontana, US
• Hamid Hojaji · Kensington, US
• David L. Melmeth · Fontana, US
• Thinh Pham · Sydney, AU
• Mark G. Stevens · Rancho Cucamonga, US
• Huagang Zhang · Yucaipa, US

Key dates

• Filing date: Apr 16, 2009
• Grant date: Mar 1, 2011
• Expiry date: Apr 16, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/3826
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

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.