Preparation and ablation properties of Hf(Ta)C co-deposition coating for carbon/carbon composites

被引：85
|
作者：
Wang, Ya-lei [1 ]
Xiong, Xiang [1 ]
Li, Guo-dong [1 ]
Liu, Huai-fei [2 ]
Chen, Zhao-ke [1 ]
Sun, Wei [1 ]
Zhao, Xue-jia [1 ]
机构：
[1] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China
[2] Cent S Univ, Sch Met Sci & Engn, Changsha 410083, Peoples R China
来源：
CORROSION SCIENCE | 2013年 / 66卷
基金：
中国国家自然科学基金;
关键词：
Ceramic; Weight loss; High temperature corrosion; MULTILAYER COATINGS; HAFNIUM CARBIDE; PROTECTIVE-COATINGS; CARBON; BEHAVIOR; OXIDATION;
D O I：
10.1016/j.corsci.2012.09.016
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Continuous, uniform Hf(Ta)C coating was co-deposited on carbon/carbon composites by chemical vapor deposition. The phase composition, microstructure and ablation properties of the Hf(Ta)C coating are investigated. Results show that the as-prepared coating is a biphasic coating consisting of HfC and HfTaC2. The particle-stacked structure is effective to produce a crack free Hf(Ta)C coating and good adhesion between the coating and C/C composites. The Hf(Ta)C coating can effectively protect C/C composites from ablation. After 60 s ablation, the mass and linear ablation rates of coated sample are 0.01 +/- 0.02 mg cm(-2) s(-1) and 0.46 +/- 0.02 mu m s(-1), respectively. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：177 / 182
页数：6
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