Mullite Oxidation Resistant Coating for SiC-coated Carbon/Carbon Composites by Supersonic Plasma Spraying
作者： Chao Ma , Hejun Li , Heng Wu , Qiangang Fu , Can Sun
DOI: 10.1016/J.JMST.2012.11.001
关键词:
摘要: To improve the oxidation resistance of carbon/carbon (C/C) composites, mullite coating was prepared on surface SiC-coated C/C composites by supersonic plasma spraying. Phases and microstructures were characterized X-ray diffraction (XRD) scanning electron microscopy (SEM). The primarily consists a single phase (3Al2O3−2SiO2). SEM results show that continuous well bonded with SiC inner layer without penetrating crack. Mullite exhibited good resistance. After 98.5 h at 1773 K 9 thermal shock cycles between room temperature, weight loss coated only 2.57%.
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