Compositions: ceramic – Ceramic compositions – Refractory
A tough, ablative-resistant, dielectric ceramic material is constructed using powder metallurgy techniques. The composite comprises a boron nitride particulate phase immersed in an Al.sub.2 O.sub.3 matrix. The boron nitride particles are preferably 3-5 microns in size, and create the capability of sustaining thermal strains without generating the thermal stresses that lead to material failure. The composite displays superior mechanical strength characteristics.
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Freiman Stephen W.
McDonough William J.
Mecholsky, Jr. John J.
Rice Roy W.
Branning A. L.
McCarthy Helen M.
McDonnell T. E.
Sciascia R. S.
The United States of America as represented by the Secretary of
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