Preparation and Anti-Oxidation Behavior of Mullite Coating on Carbon/Silicon Carbide Composite
Ethyl orthosilicate (TEOS) and aluminum nitrate were used as raw materials for preparation of mullite sol. The mullite coating (MC) on carbon/silicon carbide (Cf/SiC, f refers to fiber, the same below) was prepared by the dip coating method. Isothermal oxidation tests were performed on Cf/SiC and Cf/SiC MC and their oxidation behaviors were studied. The results show that the oxidation of Cf/SiC and Cf/SiC MC can be divided into three main stages: θ<700°C, 700°C<θ<1000°C, 1000°C<θ<1200°C. The oxidation rate-determining steps for each stage are different; the mass loss percentage of the Cf/SiC MC was fifty percent lower than that of the Cf/SiC. The Cf/SiC MC has good oxidation resistance.
Y. Yao et al., "Preparation and Anti-Oxidation Behavior of Mullite Coating on Carbon/Silicon Carbide Composite," Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society, vol. 35, no. 3, pp. 322-326, Chinese Ceramic Society, Mar 2007.
Materials Science and Engineering
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