High temperature oxidation behavior of SiB₆ sintered body by hot pressing and plasma method

Abstract

In recent years, “high temperature” ceramics as materials with strength and high melting point are drawing the attention for ceramists. These ceramic materials are expected to be used as a fireplace for nuclear fusion, aircraft engine, rocket nozzle and fireplace materials for high temperature incinerator. High-temperature oxidation behavior of sintered SiB₆ body was studied in air at 573-1273K for 5min to 25h by measuring mass gain and X-ray diffraction. In spite of increasing temperature and time, weight gain by oxidation of sintered SiB₆ body was not approved at 1273K. However, the oxidation was confirmed by X-ray diffraction analysis at higher then 873K.