Effects of SiC/HfC ratios on the ablation and mechanical properties of 3D Cf/HfC-SiC composites. Issue 6 (June 2017)

• Record Type: Journal Article
• Authors: Yan, Chunlei; Liu, Rongjun; Zhang, Changrui; Cao, Yingbin; Wang, Yanfei
• Is Part Of: Journal of the European Ceramic Society. Volume 37:Issue 6(2017)
• Page Start: 2343
• Page End: 2351
• Publication Date: 2017-06
• Subjects: Cf/HfC–SiC -- SiC/HfC ratio -- Ablation property -- Mechanical property -- Oxyacetylene torch test; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2017.01.017
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: Effects of SiC/HfC ratios on the ablation and mechanical properties of 3D Cf /HfC–SiC composites by precursor impregnation and pyrolysis (PIP) process were investigated systematically. Both strength (flexural and compressive strength) and modulus increase as the SiC/HfC ratio are improved. The compact and stiff HfC-SiC matrix in addition to the carbon fiber and PyC interphase with less reaction damage accounts for the improved mechanical properties of Cf /HfC-SiC with higher SiC/HfC ratios. Meanwhile, both weight loss and erosion depth of Cf /HfC-SiC are improved with the increased SiC/HfC ratios. Therefore, in order to balance the ablation and mechanical properties, an appropriate SiC/HfC ratio should be considered.