Preparation and properties of C/TaC composites via PIP process

详细信息    查看全文

• 作者：Jinming Jiang ; Song Wang ; ^{wangs_0731@163.com} ; Wei Li ; Xiaosong Shen ; Zhaohui Chen
• 关键词：C/TaC ; PIP ; Mechanical properties ; Composites ; Oxidation
• 刊名：Ceramics International
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：43
• 期：2
• 页码：2379-2383
• 全文大小：886 K
• 卷排序：43

文摘

Prepared by precursor infiltration and pyrolysis process (PIP), the carbon fiber reinforced tantalum carbide composites (C/TaC) were studied from the aspects of micro-structural, mechanical and ablation properties. The TaC phase formation was confirmed by the X-ray diffraction of the composites while the matrix formation around each individual fiber and the porosity between fiber bundles were presented by the cross-sectional microstructures of the composites. Furthermore, with a flexural strength of 166.5±16.84 MPa, the as-received C/TaC composites demonstrated a non-catastrophic facture behavior. Compared with the C/SiC composites by the PIP process, the C/TaC composites presented better ablation resistances, where the mass lose rate and linear recession rate during the oxyacetylene torch test were decreased by 45.9% and 78.6%, respectively. Besides, the durability of C/TaC in water vapor condition was also evaluated.