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Si3N4/SiC composite ceramic specimens, made to JIS standard, were sintered and subjected to three-point bending. Semi-elliptical surface cracks of 50–400 μm in diameter were made on the tensile side of each specimen. Crack-healing behavior as a function of environment, temperature, time, and crack size, and oxidation behavior as a function of temperature and time were studied. The main conclusions...
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