High impact resistant ceramic composite

Patent · Tue Jul 16 00:00:00 EDT 1991

OSTI ID:867912

Derkacy, James A ^[1]

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1. Pittsburgh, PA

A ceramic material and a method of forming a ceramic material which possesses a high impact resistance. The material comprises: (a) a first continuous phase of .beta.-SiC; and (b) a second phase of about 25-40 vol % TiB.sub.2. Al.sub.2 O.sub.3 is preferably used as a densification aid. The material is formed by hot-pressing the mixture at a temperature from greater than about 1800.degree. C. to less than the transition temperature of .beta.-SiC to .alpha.-SiC. The hot-pressing is performed at a pressure of about 2000 psi to about 4000 psi in an inert atmosphere for several hours and results in the formation of a two phase sintered ceramic composite material.

• Research Organization: ALUMINUM CO OF AMERICA
• DOE Contract Number: AC04-87AL42548
• Assignee: Aluminum Company of America (Pittsburgh, PA)
• Patent Number(s): US 5032550
• Application Number: 07/420,922
• OSTI ID: 867912
• Country of Publication: United States
• Language: English

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-sic
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