物理化学学报2012，Vol.28Issue(1)：239-244,6.DOI:10.3866/PKU.WHXB201228239
两步法制备具有自愈合能力的纯SiC涂层
Fabrication of a Self-Healing Pure SiC Coating by a Two-Step Technique
摘要
Abstract
A self-healing pure SiC coating was prepared on a carbon/carbon (C/C) composite by a two-step technique to protect the C/C composite from oxidation.First,SiC nanowires were obtained on the substrate surface by the thermal decomposition of hydrogen silicone oil (H-PSO).Second,a coating with a thickness of 100-200 μm was produced by infiltrating with silicon at high temperature in an argon atmosphere.The morphology and phase composition of the coating were observed by X-ray diffraction (XRD) and scanning electron microscopy (SEM).Oxidation tests were carried out on specimens and the results indicated that the obtained coating consisted of pure SiC and had a certain self-healing ability.The SiC self-healing coating significantly increased the antioxidant properties of the C/C composites and it protected the C/C composites from oxidation at 1400 ℃ in air over 4 h with a corresponding mass loss of only 0.71％.关键词
C/C复合材料/SiC纳米线/SiC涂层/抗氧化性能/自愈合Key words
C/Ccomposite/SiC nanowire/SiC coating/Oxidation resistance/Self-healing分类
化学化工引用本文复制引用
陈旸,王成国,赵伟..两步法制备具有自愈合能力的纯SiC涂层[J].物理化学学报,2012,28(1):239-244,6.基金项目
The project was supported by the National Key Basic Research Program of China (973) (2011CB605601) and International Technical Cooperation Projects,China (2009DFR50600) （973）
国家重点基础研究发展规划项目(973)(2011CB605601)和国际科技合作项目(2009DFR50600)资助 （973）
