原位生成SiC-MoSi_2-TiSi_2涂层的工艺条件研究  

Study on the preparation of the SiC-MoSi_2-TiSi_2 coating made by pack cementation method

作　　者：焦更生[1,2] 李贺军[2] 卢国锋[1] 

机构地区：[1]渭南师范学院复合材料工程中心,陕西渭南714000 [2]西北工业大学碳/碳复合材料工程技术研究中心,陕西西安710072

出　　处：《功能材料》2011年第10期1847-1850,共4页Journal of Functional Materials

基　　金：国家杰出青年基金资助项目(50225210);陕西省教育厅科研基金资助项目(09JK425);渭南师范学院科研基金资助项目(11YKZ003)

摘　　要：用一次包埋法制备了C/C复合材料SiC-MoSi2-TiSi2复相陶瓷内涂层,对制备涂层的影响因素进行了分析。最终确定的制备条件为制备温度2573K,保温时间为2h,MoSi2和TiC的配比为5∶2。结果表明C/C复合材料表面SiC-MoSi2-TiSi2复相陶瓷涂层在1500℃有氧环境下氧化49h,失重仅仅2.18%,失重率为1.17×10-4g/(cm2.h),具有良好的抗氧化性能。The internal SiC-MoSi2-TiSi2 coating for C/C composites made by pack cementation was studied.The influencing factor was analyzed when the coating was made.It is discovered that the optimum temperature was 2573K,the prepared time was 2h and the mixture ratio of MoSi2 and TiC was 5∶2.Oxidation test shows that the weight loss of the SiC-MoSi2-TiSi2 coated C/C composites characterized by excellent thermal shock resistance is only 2.18%（the weight loss rate is 1.17×10-4g/（cm2·h）） at 1773K for 49h.

关 键 词：原位生成 涂层 SiC-MoSi2-TiSi2 

分 类 号：TQ165[化学工程—高温制品工业]