期刊
SURFACE & COATINGS TECHNOLOGY
卷 311, 期 -, 页码 191-198出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2017.01.014
关键词
UHTC coating; HfC nanowire; Toughness; Bonding strength; Ablation resistance
资金
- National Natural Science Foundation of China [51502223, 51672223, 51432008]
- Research Fund of the State Key Laboratory of Solidification Processing (NWPU), China [98-QZ-2014, SKLSP201506]
To improve the ablation resistance of the coated carbon/carbon composites, HfC nanowires acting as reinforcement materials were introduced into ZrB2-SiC/SiC multilayer coating. Synthesis, morphology, mechanical properties and ablation resistance of the coating were researched. A porous HfC nanowire layer was uniformly covered on SiC coating. Both of the toughness and interface bonding strength of ZrB2-SiC coating with HfC nano wires were higher than those of the coating without HfC nanowires. HfC nanowires could effectively inhibit the cracking and peeling of outer coating during ablation. After oxyacetylene torch ablation for 90 s, the mass ablation rate of the coated sample without and with HfC nanowires was 0.20 mg/s and - 0.12 mg/s, respectively. (C) 2017 Elsevier B.V. All rights reserved.
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