Ablation resistant zirconium and hafnium ceramics

Compositions: ceramic – Ceramic compositions – Carbide or oxycarbide containing

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501 92, 501 463, C04B 35577, C04B 3558

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active

057504504

ABSTRACT:
High temperature ablation resistant ceramic composites have been made. These ceramics are composites of zirconium diboride and zirconium carbide with silicon carbide, hafnium diboride and hafnium carbide with silicon carbide and ceramic composites which contain mixed diborides and/or carbides of zirconium and hafnium, along with silicon carbide.

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