Perhydropolysilazane derived silica coating protecting Kapton from atomic oxygen attack

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	Perhydropolysilazane derived silica coating protecting Kapton from atomic oxygen attack
	L. F. Hu; M. S. Li; C. H. Xu; Y. M. Luo
	2011
发表期刊	Thin Solid Films
ISSN	0040-6090
卷号	520 期号:3 页码:1063-1068
摘要	By using surface sol-gel method with perhydropolysilazane (PHPS) as a precursor, a silica coating was prepared on a Kapton substrate as an atomic oxygen (AO) protective coating. The AO exposure tests were conducted in a ground-based simulator. It is found that the erosion yield of Kapton decreases by about three orders of magnitude after the superficial application of the coating. After AO exposure, the surface of the coating is smooth and uniform, no surface shrinkage induced cracks or undercutting erosion are observed. This is because that during AO exposure the PHPS is oxidized directly to form SiO(2) without through intermediate reaction processes, the surface shrinkage and cracking tendency are prohibited. Meanwhile, this PHPS derived silica coating also presents self-healing effect due to the oxidation of free Si. Compared with other kinds of silica or organic polymer coatings, this PHPS derived silica coating exhibits a superior AO erosion resistance. (C) 2011 Elsevier B.V. All rights reserved.
部门归属	[li, meishuan] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [hu, longfei] china acad aerosp aerodynam, beijing 100074, peoples r china. [xu, caihong; luo, yongming] chinese acad sci, inst chem, beijing 100080, peoples r china.;li, ms (reprint author), 72 wenhua rd, shenyang 110016, peoples r china;mshli@imr.ac.cn
关键词	Perhydropolysilazane Kapton Atomic Oxygen Sol-gel Erosion Yield Low-earth-orbit Surface Modification Spacecraft Materials Erosion Resistance Plasma Films Polysilazane Precursors Polymers
URL	查看原文
WOS记录号	WOS:000298486600030
引用统计	被引频次：42[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30394
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. F. Hu,M. S. Li,C. H. Xu,et al. Perhydropolysilazane derived silica coating protecting Kapton from atomic oxygen attack[J]. Thin Solid Films,2011,520(3):1063-1068.
APA	L. F. Hu,M. S. Li,C. H. Xu,&Y. M. Luo.(2011).Perhydropolysilazane derived silica coating protecting Kapton from atomic oxygen attack.Thin Solid Films,520(3),1063-1068.
MLA	L. F. Hu,et al."Perhydropolysilazane derived silica coating protecting Kapton from atomic oxygen attack".Thin Solid Films 520.3(2011):1063-1068.