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US 5,482,673 AGranted
Method for preparing ceramic composite
AssigneeMartin Marietta Energy Systems, Inc.
InventorsKathleen B. Alexander, Terry N. Tiegs, Paul F. Becher, Shirley B. Waters
Life of this patent
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Abstract
A process for preparing ceramic composite comprising blending TiC particulates, Al.sub.2 O.sub.3 particulates and nickle aluminide and consolidating the mixture at a temperature and pressure sufficient to produce a densified ceramic composite having fracture toughness equal to or greater than 7 MPa m.sup.1/2, a hardness equal to or greater than 18 GPa.
Claims1
A process for the preparation of a ceramic composite comprising alumina particulates, titanium carbide particulates, and a ductile binder of nickel aluminide comprising:
- Step 1. blending powders of said alumina particulates, said titanium carbide particulates and said ductile binder of nickel aluminide to form a mixture, said titanium carbide particulates content is about 25 vol % of said ceramic composite and said ductile binder of nickel aluminide content is about 10 vol % of said ceramic composite;
- and
- Step 2. consolidating said mixture of Step 1. under a temperature and pressure sufficient to produce a densified ceramic composite having a fracture toughness equal to or greater than 7 MPa m.sup.1/2, a hardness equal to or greater than 18 GPa, and said ductile binder of nickel aluminide being isotropically distributed throughout said densified ceramic composite.
Dependencies are inferred from the claim text.