聚变堆结构材料SiC／SiC的研究进展

Research and Development of SiC/SiC Composite for Fusion Application

SiC/SiC复合材料具有优异的高温强度、抗蠕变性能、耐腐蚀和热冲击性能、假塑性断裂行为以及在聚变环境下固有的低诱导放射性和放射余热,被公认为是聚变堆结构的候选材料,在国际上很多反应堆概念设计中颇受瞩目。综述了几十年来世界范围内对聚变堆包层结构应用背景下的SiC纤维、SiC单体、纤维-基体界面以及SiC/SiC复合材料的研究进展,阐述了对该复合材料辐照效应的研究现状,并在此基础之上指出了目前SiC/SiC复合材料应用于聚变堆包层结构材料的限制因素。

The SiC/SiC composite is a promising structural material candidate for fusion power cores and has been considered internationally in several power plant studies. It offers safety advantages arising from its low induced radioactivity and afterheat, and the possibility of high performance through high temperature operation. The recent progress in research, development, and characterizations studies on the SiC fiber, monolithic SiC, fiber-matrix interface and SiC/SiC composite for fusion applications these decades are summerized. The development of the irradiation effect studies is also reviewed. Finally, remaining general and specific technical issues for SiC composite development for fusion applications are identified.