Microstructure evolution and isothermal oxidation properties of c-AlPO4 and SiC whisker co-modified mullite coated SiC-C/SiC composites
Microstructure evolution and isothermal oxidation properties of c-AlPO4 and SiC whisker co-modified mullite coated SiC-C/SiC composites
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c-AlPO4和SiC晶须共改性莫来石涂层SiC-C/SiC复合材料的微观结构演变及等温氧化性能
DOI：
10.1016/j.ceramint.2019.07.054
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发表时间：
2019-11
影响因子：
5.2
通讯作者：
Li Yang
中科院分区：
文献类型：
--
作者：
Pu Dongmei;Chen Pengju;Xiao Peng;Li Zhuan;Liu Zeyan;Li Yang
An oxidation protectivec-AlPO4and SiC whisker co-modified mullite coating (c-AlPO4-SiCw-mullite) on SiC coated C/SiC composites were manufactured by hydrothermal electrophoretic deposition accompanied by magnetic stirring. Phase composition ofc-AlPO4-SiCw-mullite coatings on SiC coated C/SiC composites with different deposition time was detected by X-ray Diffraction (XRD), element distribution and microstructure were investigated by electron probe microanalysis (EPMA) and scanning electron microscopy (SEM). Results show that a crack-free, dense and homogeneous coating was prepared by hydrothermal electrophoretic deposition method. The thickness, homogeneity and antioxidant properties ofc-AlPO4-SiCw-mullite coating were improved with the extension of deposition time from 10 min to 30 min. The coating manufactured after deposition of 30 min showed smoothest surface and highest density, which can effectively protect C/SiC composites from oxidation for 160 h at 1773 K in air with a weight loss of 10.02 mg cm−2. Microstructural characterization after oxidation indicated that the failure of thec-AlPO4-SiCw-mullite coating was due to the consecutive formation of penetrative micro-cracks and micro-holes.
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DOI：
10.1016/j.compositesb.2018.03.035
发表时间：
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期刊：
Composites Part B: Engineering
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