Double SiC coating on carbon/carbon composites against oxidation by a two-step method

Can Sun, He Jun Li, Qian Gang Fu, Jia Ping Zhang, Han Peng

科研成果: 期刊稿件文章同行评审

25 引用 (Scopus)

摘要

To improve the oxidation resistance of C/C composites, a double SiC protective coating was prepared by a two-step technique. Firstly, the inner SiC layer was prepared by a pack cementation technique, and then an outer uniform and compact SiC coating was obtained by low pressure chemical vapor deposition. The microstructures and phase compositions of the coatings were characterized by SEM, EDS and XRD analyses. Oxidation behaviour of the SiC coated C/C composites was also investigated. It was found that the double SiC coating could protect C/C composites against oxidation at 1773 K in air for 178 h with a mass loss of 1.25%. The coated samples also underwent thermal shocks between 1773 K and room temperature 16 times. The mass loss of the coated C/C composites was only 2.74%. Double SiC layer structures were uniform and dense, and can suppress the generation of thermal stresses, facilitating an excellent anti-oxidation coating.

源语言英语
页(从-至)2107-2112
页数6
期刊Transactions of Nonferrous Metals Society of China (English Edition)
23
7
DOI
出版状态已出版 - 7月 2013

指纹

探究 'Double SiC coating on carbon/carbon composites against oxidation by a two-step method' 的科研主题。它们共同构成独一无二的指纹。

引用此