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摘要:
福岛核事故发生后，为提高核燃料元件抵抗严重事故能力而开发的耐事故燃料成为核行业研究热点。本文介绍了以BeO、SiC掺杂为代表的热导增强型UO2芯块、高铀密度高热导燃料芯块和全陶瓷微封装燃料芯块，总结了耐事故燃料芯块的优势特性、热导率、制备方法和研究进展，分析和展望了耐事故燃料芯块的现有问题和应用前景，以期为耐事故燃料芯块的研究提供参考。
Abstract:After the Fukushima nuclear accident, the accident tolerant fuel (ATF) is developed to improve the ability of nuclear fuel components to resist the serious accidents and becomes the hot research topic in the nuclear industry. The enhanced thermal conductivity UO2 pellets represented by BeO and SiC doping, high uranium density and high thermal conductivity fuel pellets, and fully ceramic microencapsulated fuel pellets were reviewed in this paper. The advantage characteristics, thermal conductivity, preparation process, and research progress of the accident resistant fuel pellets were introduced. The problems and application prospects of the accident resistant fuel pellets were focused and prospected to provide the reference for the study of the accident tolerant fuel pellets.
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