Journal
CORROSION SCIENCE
Volume 77, Issue -, Pages 25-30Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2013.06.042
Keywords
Ceramic; Weight loss; High temperature corrosion
Funding
- National Basic Research Program of China [2011CB605805]
- Creative Research Group of National Natural Science Foundation of China [51021063]
- Hunan Provincial Innovation Foundation for Postgraduate
- Ministry of Education [20100162120002]
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HfC/ZrC coatings were co-deposited on carbon/carbon composites by chemical vapor deposition using a gas mixture of HfCl4, ZrCl4, CH4, H-2 and Ar. The phase composition, microstructure, growth behavior and ablation performance of the HfC/ZrC coatings are investigated. Results show that the as-prepared coatings are biphasic coating consisting of HfC and ZrC. The methane concentration plays a significant part in determining the internal structure, growth behavior and then the ablation performance of the HfC/ZrC coatings. The biphasic coating cans protect C/C composites through consuming the oxidized gases and isolating the substrate from ablation environment. Crown Copyright (C) 2013 Published by Elsevier Ltd. All rights reserved.
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