Preparation of 3D C/SiC-Cu Composites via Precursor Pyrolysis and Property Investigation
A novel composite,3D C/SiC-Cu,which contained copper as transpiration agent,was designed and prepared.The influence of copper contents (2.18,4.86,6.53vol %) upon the mechanical and anti-ablative properties was investigated.The flexural strengths of three composites were over 450MPa,and fracture toughness over 15.0MPa·m 1/2.After being ablated for 35 seconds in flowing oxyacetylene torch environment,the composites remained integral,and the flexural strength and strength retention ratio of the composite increased with the copper content increase.The maximum recession rate of the samples in oxyacetylene torch test was as low as O.0490mm/s.
C/SiC-Cu Transpiration Anti-ablative property Nozzle throat
Qikun Wang Haifeng Hu Zhaohui Chen
CFC Lab,College of Aerospace and Materials Engineering,National University of Defense Technology,Changsha 410073,P.R.China
国际会议
The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))
长沙
英文
1031-1033
2007-05-10（万方平台首次上网日期，不代表论文的发表时间）