C/C复合材料的氧化对激光防护的影响研究

Research of the effect of carbon-carbon composites oxidation on laser protection

研究了不同风速下激光辐照C/C复合材料的氧化速率,利用温度场计算结果,结合氧气在空气中的传质速率,计算了激光辐照下C/C复合材料的氧化烧蚀速率及氧化放热的影响。数值计算结果表明,激光辐照期间,较低风速下氧化对烧蚀的贡献很小。作为激光防护材料,C/C复合材料激光辐照期间的氧化烧蚀可以忽略。

Tbe oxidation velocity of carbon-carbon composites irradiated by the high energy laser has been studied. The temperature field and the mass transfer velocity of oxygen among the air have been computed. Bases on this, the oxidation ablation velocity and the heat quantity generated in the course of oxidation of carbon-carbon composites irradiated by the high energy laser have been obtained. The result indicates that the oxidation has little contribution to ablation at low wind speed. As a kind of laser protection material,the oxidation of the carbon-carbon composites can be neglected.