Microstructure and ablation performances of dual-matrix carbon/carbon composites

• Published in: Carbon (New York) Vol. 44; no. 9; pp. 1690 - 1694
• Main Authors: Yin, Jian, Xiong, Xiang, Zhang, Hongbo, Huang, Baiyun
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.08.2006; Elsevier Science
• Subjects: Ablation performance; Carbon/carbon composites; Chemistry; Colloidal state and disperse state; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Fullerenes and related materials; diamonds, graphite; General and physical chemistry; Materials science; Microstructure; Physics; Plasma flame; Porous materials; Specific materials; Microstructure; Ablation performance; Plasma flame; Carbon/carbon composites; Interfaces; Scanning electron microscopy; Composite materials; Pore; Porous materials; Morphology; Pyrolytic carbon; Structure; Carbon; Particles; Defects
• ISSN: 0008-6223; 1873-3891
• DOI: 10.1016/j.carbon.2006.01.017

The ablation performances of dual-matrix carbon/carbon composites were tested on a DJ-21 arc heater, and the morphologies of specimens were investigated by scanning electron microscopy (SEM). It is found that the composites have typical rough laminar pyrocarbon structure and ablation always tends to start at interfaces, defects and pores. In addition, the work indicates that ablation performances of parallel ablation are better than vertical ablation and parallel ablation is mainly controlled by block denudation while vertical ablation is more likely to be controlled by particle denudation.