期刊
CORROSION SCIENCE
卷 123, 期 -, 页码 139-146出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2017.04.014
关键词
Oxyacetylene flame; C/C composites; HfC-SiC; Coating; Cyclic ablation
资金
- National Natural Science Foundation of China [51521061, U1435202, 51572223]
- State Key Laboratory of Solidification Processing (NWPU), China [142-TZ-2016, 201404]
- Program of Introducing Talents of Discipline to Universities, China (111 Project) [B08040]
To enhance the cyclic ablation performance of SiC coating from1750 degrees C to room temperature under vertical oxyacetylene torch, interface design and HfC additive were combined. A porous surface of C/C composites was firstly constructed by oxyacetylene flame so as to form an inlaid interface after the pack cementation preparation of HfC-SiC coating. After 8 ablation thermal cycles, the mass loss per unit area of the HfC-SiC coating was only 36.47 mg cm(-2). Based on thermogravimetric analysis, adhesive strength and thermal expansion test, effect of the inlaid interface on oxidation as well as ablation performance of the HfC-SiC coating was discussed.
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