二氧化铀基事故容错燃料芯块烧结技术研究进展  

Progress in sintering technology for uranium dioxide-based accident tolerant fuel pellets

作　　者：粟丹科 喻冲[1] 张润畦 梁艺涵 SU Danke;YU Chong;ZHANG Runqi;LIANG Yihan(Nuclear Fuel and Material Institute,Nuclear Power Institute of China,Chengdu 610213,China;School of Metallurgical and Ecological Engineering,University of Science&Technology Beijing,Beijing 100083,China)

机构地区：[1]中国核动力研究设计院核燃料元件及材料研究所,四川成都610213 [2]北京科技大学冶金与生态工程学院,北京100083

出　　处：《内蒙古科技大学学报》2024年第4期307-320,共14页Journal of Inner Mongolia University of Science and Technology

基　　金：中核集团领创科研项目(KLC2101)。

摘　　要：二氧化铀(UO_(2))是商业轻水堆主要采用的燃料类型,但福岛核事故暴露了二氧化铀燃料的缺陷,进而催生了事故容错燃料研究计划的提出。UO_(2)基事故容错燃料芯块通常通过复合高热导率相或制备大晶粒来提高其导热性和机械性能,但迄今为止,还没有关于UO_(2)基事故容错燃料芯块烧结技术方面的系统性论述。基于此,总结了不同类型的UO_(2)基事故容错燃料芯块的烧结方法及研究进展,旨在探索新一代烧结工艺及提升我国先进核燃料的技术水平。Uranium dioxide(UO_(2))is the main fuel type used in commercial light-water reactors.Still,the Fukushima nuclear accident exposed the defects of UO_(2)fuel,which led to the proposal of an accident-tolerant fuel research program.UO_(2)-based accident-tolerant fuel pellets are usually improved in terms of thermal conductivity and mechanical properties by combining high thermal conductivity phases or preparing large grains.Still,so far,there has been no systematic discussion on the sintering technology of UO_(2)-based accident-tolerant fuel pellets.Based on this,the sintering methods and research progress of different types of UO_(2)-based accident-tolerant fuel pellets were summarized,aiming to explore a new generation of sintering processes and improve the technological level of advanced nuclear fuels in China.

关 键 词：二氧化铀 事故容错燃料 高热导率 场辅助烧结 界面反应 

分 类 号：TL211.1[核科学技术—核燃料循环与材料]