ZrC_p/W复合材料的烧蚀性能

用自制的氧乙炔烧蚀装置对ＺｒＣｐ／Ｗ复合材料烧蚀性能进行了研究。结果表明：复合材料的质量烧蚀率和线烧蚀率由低到高的排列顺序为 ４０％ＺｒＣｐ（体积分数，下同）／Ｗ＜３０％ＺｒＣｐ／Ｗ＜Ｗ；钨中加入ＺｒＣ颗粒明显提高了钨的抗烧蚀性能，而且 ＺｒＣ颗粒含量越高，材料抗烧蚀性能越好。并用多波长高温计对烧蚀表面温度进行在线测试。复合材料烧蚀机理是Ｗ，ＺｒＣ的氧化烧蚀。

Ablation Properties of ZrC_p/W Composites

The ablation properties of ZrCp/W composite were measured using a self--made oxyacetylene ablation equipment. The results indicate that the values of mass ablation rate and linear ablation rate are in the order of W>30vol%ZrCp/W>40vol% ZrCp/W. The ablation resistance of the composites greatly increases with increasing ZrC particle content. The important ablation surface temperature curves were detected in situ using a multi--wavelength pyrometer. Thermochemical oxidation of ZrC and W is the main ablation mechanism of ZrCp/W composites.