Lightweight high performance ceramic material

Compositions: ceramic – Ceramic compositions – Carbide or oxycarbide containing

Reexamination Certificate

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C501S096300, C089S036020

Reexamination Certificate

active

07419925

ABSTRACT:
A sintered ceramic composition includes at least 50 wt. % boron carbide and at least 0.01 wt. % of at least one element selected from the group consisting of Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy Ho, Er, Tm, Yb, and Lu, the sintered ceramic composition being characterized by a density of at least 90% of theoretical density.

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