Advances in Ablation or Oxidation Mechanisms and Behaviors of Carbon Fiber-Reinforced Si-Based Composites

Composites with excellent thermomechanical and thermochemical properties are urgently needed in the aerospace field, especially for structural applications under high-temperature conditions. Carbon fiber-reinforced Si-based composites considered most promising potential materials due to their oxidation resistance ablative behaviors, good designability, mechanical properties. The reinforcement of relevant mainly involves carbon fiber, which possesses temperature abilities. In this paper, ablation behaviors mechanisms related reviewed. For pure (C/SiM composites), anti-ablation mechanism is attributed continuous glassy SiO2, inhibits damage substrate. C/SiM composite doping refractory metal compounds, oxides Si together protect main substrate from oxidation. Moreover, addition damage, thermophysical behavior severely destroy surface coating