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We have characterized the high-temperature subcritical crack growth and oxidation resistance of a liquid-phase-sintered (LPS) SiC with 20% volume fraction yttrium aluminum garnet (YAG) second phase. Constant stress-rate testing in air in the temperature range 1100-1300 o C yielded a crack growth exponent, n=38.9+/-9.9 and an activation energy, Q scg =(380+/-237) kJ mol ...
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