C/SiC复合材料喷管焊接连接技术研究

摘要

C/SiC-金属连接是C/SiC复合材料喷管应用的关键技术.本文综述了上海空间推进研究所对CVD铌和钎焊两种C/SiC复合材料喷管连接技术的分析和研究试验,指出其存在的问题和解决途径以及后续发展的重点.此外,还探讨了工业CT在复合材料喷管焊接连接件的检测情况,说明微焦点工业CT对C/SiC喷管-金属连接件具有较好的检测效果,可以为产品质量评估提供可靠依据.%Jointing of C/SiC-metal is the key technique of C/SiC composites nozzle. This paper introduced the analysis and research experiments of chemical vapor deposit Nb( CVD Nb) and brazing which are two kind of general jointing methods of C/SiC-metal on Shanghai Institute of Space Propulsion. The existing problems, their solutions and further developing emphases were also presented. Moreover, this paper discussed non-destructive testing( NDT) method of CT to C/SiC nozzle weld jointed with metal, and results showed that micro-focus CT had more test effect, which can provide reliable evidence to jointed C/SiC nozzle products.