Microstructure and oxidation resistant property of C/C composites modified by SiC-MoSi2-CrSi2 coating

Y. H. Chu, Q. G. Fu, C. W. Cao, H. J. Li, K. Z. Li, Q. Lei

科研成果: 期刊稿件文章同行评审

14 引用 (Scopus)

摘要

To prevent carbon/carbon (C/C) composites from oxidation, a dense and multiphase inlaid SiC-MoSi2-CrSi2 coating was prepared by pack cementation. The coatings were characterised by scanning electron microscopy, energy dispersive spectroscopy and X-ray diffraction. The effect of pack composition on the oxidation properties was studied on low density C/C composite, and then optimum composition was finalised. The optimum composition was the one containing 5 wt-%Cr and oxidation behaviour of high and low density C/C composites coatings with this composition was studied. Oxidation test shows that, when the Cr content was 5 wt-%, the SiC-MoSi2-CrSi2 coating possessed excellent oxidation resistant ability. After application of the SiC-MoSi2-CrSi2 multiphase coating, the low density C/C composite showed a mass loss of only 1·36% after oxidation at 1873 K for 43 h, while the mass loss of the coated high density sample was up to 7·45% after oxidation at 1873 K for 8 h.

源语言英语
页(从-至)355-361
页数7
期刊Surface Engineering
27
5
DOI
出版状态已出版 - 6月 2011

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