Mechanical properties and ablation resistance of HfC nanowire modified carbon/carbon composites. Issue 10 (July 2020)

• Record Type: Journal Article
• Authors: Fu, Yanqin; Zhang, Yulei; Zhang, Jian; Li, Tao; Chen, Guohui
• Is Part Of: Ceramics international. Volume 46:Issue 10(2020)Part B
• Page Start: 16142
• Page End: 16150
• Publication Date: 2020-07
• Subjects: HfC nanowires -- Carbon/carbon composites -- HfCnws-C/C composites -- Mechanical properties -- Ablation resistance; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2020.03.168
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Hafnium carbide nanowires (HfCnws) were in-situ grown in carbon/carbon (C/C) composites, and subsquently the preforms were densified by isothermal chemical vapor infiltration to obtain HfCnws modified carbon/carbon (HfCnws-C/C) composites. Morphology and microstructure of HfCnws were examined, and the effect of HfCnws on the mechanical property and ablation resistance of C/C composites were also investigated. Results show that introducing HfCnws refined the grain size of pyrolytic carbon (PyC). The out-of-plane compression, interlaminar shear and flexual strength of HfCnws-C/C composites increased by 120.80%, 45.60% and 94.65%, respectively compared with pure C/C, and the HfCnws-C/C shows good ablation resistance under oxy-acetylene flame ablation.