Abstract
The influence of atmosphere and temperature on Young's modulus of porous SiC with the porosity of 0.1%, 10.6%, 23.4% and 30.3% was investigated. In air, young's modulus of SiC with the porosity of 0.1% and 10.6% decreased with temperature, but that of SiC with the porosity of 23.4% and 30.3% increased in the temperature range of 1000 to 1200°C. In argon atomosphere, young's modulus of all SiC decreased with temperature. The difference of young's modulus was related to the oxidation of samples during measuring. Weight gain of porous SiC by the oxidation was bigger than densified SiC.
