两步法制备具有自愈合能力的纯SiC涂层

引用本文: 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(01): 239-244. doi: 10.3866/PKU.WHXB201228239 shu

Citation: CHEN Yang, WANG Cheng-Guo, ZHAO Wei. Fabrication of a Self-Healing Pure SiC Coating by a Two-Step Technique[J]. Acta Physico-Chimica Sinica, 2012, 28(01): 239-244. doi: 10.3866/PKU.WHXB201228239 shu

两步法制备具有自愈合能力的纯SiC涂层

基金项目:
国家重点基础研究发展规划项目(973) (2011CB605601) (973) (2011CB605601)

国际科技合作项目(2009DFR50600)资助 (2009DFR50600)

摘要: 为了提高碳/碳(C/C)复合材料的抗氧化性能, 通过两步法在基体表面制备了具有自愈合能力的纯SiC涂层. 首先, 通过高含氢硅油(H-PSO)的高温热解在基体表面引入SiC 纳米线, 然后通过高温渗Si, 在碳材料表面生成厚度约为100-200 μm的涂层. 通过X射线衍射(XRD)、扫描电子显微镜(SEM)表征了所制备的涂层形貌及相组成, 并对所制备的试样进行了氧化实验. 实验结果表明: 涂层是由纯SiC构成的, 且具有一定的自愈合能力; 所制备的试样在1400 °C下氧化4 h, 失重仅为0.71%, 抗氧化性能得到提高.

关键词:

English

Fabrication of a Self-Healing Pure SiC Coating by a Two-Step Technique

1.
1. Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of Education, Shandong University, Jinan 250061, P. R. China;
2. Carbon Fiber Engineering Research Center, Shandong University, Jinan 250061, P. R. China
Received Date: 18 July 2011
Available Online: 29 December 2011
Fund Project:
国家重点基础研究发展规划项目(973) (2011CB605601)

国际科技合作项目(2009DFR50600)资助

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 ar n 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 °C in air over 4 h with a corresponding mass loss of only 0.71%.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

两步法制备具有自愈合能力的纯SiC涂层

English

Fabrication of a Self-Healing Pure SiC Coating by a Two-Step Technique

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

两步法制备具有自愈合能力的纯SiC涂层

English

Fabrication of a Self-Healing Pure SiC Coating by a Two-Step Technique

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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