Effects of SiC/HfC ratios on the ablation and mechanical properties of 3D Cf/HfC-SiC composites |
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| Affiliation: | 1. Université Bordeaux, LCTS, UMR5801, F-33600 Pessac, France;2. CEA, DAM, Le Ripault, F-37260 Monts, France;1. State Key Laboratory of Solidification Processing, Carbon/Carbon Composites Research Center, Northwestern Polytechnical University, Xi’an 710072, China;2. School of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China;1. State Key Laboratory of Solidification Processing, Carbon/Carbon Composites Research Center, Northwestern Polytechnical University, Xi’an 710072, China;2. College of Materials and Mineral Resources, Xi’an University of Architecture and Technology, Xi’an 710055, China;1. High Enthalpy Plasma Research Center, Chonbuk National University 546 Bongdong-ro, Bongdong-eup, Wanju-gun, Jeollabuk-do 565-901, Republic of Korea;2. Department of Quantum System Engineering, Chonbuk National University 567 Baekje-daero, Deokjin-gu, Jeonju, Jeollabuk-do 561-756, Republic of Korea;3. Dai-Yang Industry Co. 24-33 Dunteo-Ro, Majang-Myun, Ichon-Si, Kyungki-Do 467-811, Republic of Korea |
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| 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. |
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| Keywords: | SiC/HfC ratio Ablation property Mechanical property Oxyacetylene torch test |
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