C/SiC复合材料表面SiC/Zr-Si-C/SiC复合涂层的制备及性能研究  

Fabrication and Properties of SiC/Zr-Si-C/SiC Coated on the Surface of C/SiC Composites

作　　者：向阳[1] 李伟[1] 王松[1] 陈朝辉[1] 

机构地区：[1]国防科技大学新型陶瓷纤维及其复合材料重点实验室,长沙410073

出　　处：《人工晶体学报》2013年第3期525-528,共4页Journal of Synthetic Crystals

基　　金：国家自然科学基金重大研究计划重点支持项目(90916002)

摘　　要：为提高C/SiC复合材料的抗氧化性能,设计了致密的CVD-SiC涂层和多孔的熔盐法Zr-Si-C涂层相间的涂层体系。通过实验测试,建立了该涂层的生长模型,并考核了材料在1773 K的抗氧化性能。氧化结果显示,材料在氧化2 h后的失重率为仅0.67%,弯曲强度保留率为99.7%,不同组成相间的结构涂层呈现出优异的抗氧化性能。In order to improve the oxidation behavior of carbon/silicon carbide composites, multilayer coatings of dense SiC alternated with porous Zr-Si-C were prepared by chemical vapor deposition combined with molten salt reaction. The results indicated that the process was effective. A growth model was proposed based on the deposition of SiC and the reaction of Zr-Si-C. Oxidation test showed that weight loss of the coated sample was only 0.67% after 2 h oxidation in air at 1773 K. The excellent oxidation protective ability of the coatings can be attributed to the alternated structure.

关 键 词：陶瓷基复合材料 化学气相沉积 熔盐 涂层 氧化 

分 类 号：TB323[一般工业技术—材料科学与工程]