现代技术陶瓷2026，Vol.47Issue(3)：256-271,16.DOI:10.16253/j.cnki.37-1226/tq.2026.03.003
全陶瓷微封装燃料TRISO颗粒涂层力学及界面特性研究
Mechanical and Interfacial Bonding Properties of TRISO Coatings in Ceramic-Based Dispersed Matrix Fuel
摘要
Abstract
Ceramic-based dispersed matrix fuel(CDM)takes advantage of the excellent thermal conductivity and irradiation resistance of SiC materials,which can further enhance the operational safety of TRISO(Tristructural-isotropic)pellets and meet the requirements of higher temperatures and fuel consumption in reactors.In this work,the mechanical properties of the TRISO pellets coating and its interfacial bonding properties with the SiC matrix in CDM with zirconia simulated core were studied.The Young's modulus and Vickers' hardness of each coating,as well as the fracture toughness of the SiC coating and the SiC substrate,were tested by the micrometer indentation method.Furthermore,the bonding force of the relevant interfaces was evaluated by using the push-out method and the indentation method,and the crack propagation behavior at each coating and interface was investigated with microstructure characterization.The results show that considering the bonding force of each interface of the CDM sample and the strength of each coating area itself,the relatively loose Buffer layer and the core/Buffer interface with weak bonding are prone to damage and failure.The study has proposed feasible testing methods and analytical approaches for the characterization of the mechanical properties and interfacial bonding of fuel microsphere-coated coatings,providing an important reference for the improvement of the sample processing technology of TRISO and CDM.关键词
TRISO微球/CDM/热解碳/微观结构/力学性能/界面结合力Key words
TRISO microsphere/CDM/Pyrolytic carbon/Microstructure/Mechanical properties/Interfacial bonding分类
化学化工引用本文复制引用
翟晟业,张鹏,李统业,王凯,倪娜,李垣明,何宗倍..全陶瓷微封装燃料TRISO颗粒涂层力学及界面特性研究[J].现代技术陶瓷,2026,47(3):256-271,16.基金项目
国家自然科学基金资助项目(U20B2013) （U20B2013）
四川省自然科学基金项目(2024NSFJQ003) （2024NSFJQ003）
中核集团基础研究项目(CNNC-JCYJ-202218).National Natural Science Foundation of China(U20B2013) （CNNC-JCYJ-202218）
Natural Science Foundation of Sichuan Province(2024NSFJQ003) （2024NSFJQ003）
China National Nuclear Corporation Basic Research Project(CNNC-JCYJ-202218). （CNNC-JCYJ-202218）
