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US 6,146,559 AGranted
Preparation of high density titanium diboride ceramics with preceramic polymer binders
AssigneeDow Corning Corporation
InventorGregg Alan Zank
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Abstract
A method for preparing high density titanium diboride ceramic bodies in which titanium diboride powder is first mixed with a preceramic organosilicon polymer. The mixture is then molded and sintered under pressure or by a pressureless process.
Claims10
A method of preparing a sintered titanium diboride body comprising:
- (a) mixing components comprising titanium diboride powder and at least 10% by weight preceramic organosilicon polymer to form a uniform mixture, wherein the preceramic organosilicon polymer is one which provides a char containing silicon and carbon and the carbon is present in at least a stoichiometric amount based on the silicon content;
- (b) forming the uniform mixture into a desired shape to obtain a handleable green body;
- and
- (c) sintering the handleable green body in an inert atmosphere at a temperature greater than 2000.degree. C. to obtain a sintered body with a density greater than about 4.0 g/cm.sup.3.
1 more element
Dependencies are inferred from the claim text.