以不同质量比SiC/ZrC有机前驱体混合溶液为浸溃剂,采用前驱体浸渍裂解法(PIP)制得C/C-SiC-ZrC复合材料.对C/C-SiC-ZrC复合材料的组成、微观结构及烧蚀性能进行了分析和测试,探讨了SiC/ZrC前驱体配比对复合材料烧蚀性能的影响.结果表明,随着ZrC含量的增加,复合材料的质量烧蚀率和线娆蚀率呈现出先减小后增大的趋势.采用质量比为1∶3的SiC/ZrC前驱体混合溶液制备的C/C-SiC-ZrC复合材料具有相对较好的烧蚀性能,试样在氧乙炔焰下3 000℃烧蚀20 s,其质量烧蚀率和线烧蚀率分别为-0.65mg/s和21 μm/s.SiC-ZrC复相陶瓷中ZrC含量过低或过高均不利于提高其氧化稳定性,而ZrC含量适中的SiC-ZrC复相陶瓷具有较好的氧化稳定性.
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