摘要
通过在燃料元件锆合金表面制备涂层能够增强其在事故工况下的容错能力,同时不影响锆合金基底性能,是自福岛事故以来短期内提高核电运行安全性最有效的手段之一。综述了不同燃料涂层材质的国内外研究现状,包括Cr系、FeCrAl系、陶瓷系和高熵合金系等,从涂层材料沉积工艺参数、事故工况下稳定性、涂层失效过程等方面分析介绍了现有耐事故燃料涂层的性能优势及面临的主要问题。Cr涂层和FeCrAl涂层对基底杰出的保护能力受到了广泛关注,现阶段已进入中试阶段,但其在核电工况下的稳定性仍然需要进一步确认。研发安全稳定、高效的耐事故燃料涂层对核电发展具有重要意义。
The zirconium coating on the surface of the fuel element can enhance its fault-tolerance ability under accident conditions without affecting the properties of the zirconium substrate.It is one of the most effective means to improve the safety of nuclear power operation in the short term since the Fukushima accident.The research status of fuel coatings with different materials at domestic and overseas was reviewed,including Cr system,FeCrAl system,ceramic system and high entropy alloy system.The performance advantages and main problems of existing accident-resistant fuel coatings were analyzed and introduced from the aspects of deposition process parameters of coating materials,stability under accident conditions and coating failure process.The excellent protective ability of Cr coating and FeCrAl coating to the substrate has been widely concerned by researchers.At present,it has entered the pilot stage,but its stability under nuclear power conditions still needs to be further confirmed.The development of safe,stable and efficient accident-resistant fuel coatings is of great significance to the development of nuclear power.
作者
刘志鑫
郭辉
双应忠
李佳雨
韩明
梁国亮
谢钟音
刘涛
俞杰
LIU Zhixin;GUO Hui;SHUANG Yingzhong;LI Jiayu;HAN Ming;LIANG Guoliang;XIE Zhongyin;LIU Tao;YU Jie(Institute of Environmental Engineering Technology,China Institute for Radiation Protection,Taiyuan 030006,China;CNNC Key Laboratory on Radioactive Gas Purification Technology,China Institute for Radiation Protection,Taiyuan 030006,China)
出处
《热加工工艺》
北大核心
2025年第22期18-24,31,共8页
Hot Working Technology
基金
国家重大科研项目(KY20007)。
关键词
耐事故燃料涂层
包壳材料
涂层改性
沉积技术
accident resistant cladding coatings
encapsulation material
coating modification
sedimentation technology
