锆合金包壳表面纳米多层涂层的研究进展-中国材料进展

文章信息/Info

Title:: Research Progress of Nanolaminated Coatings on Zirconium Alloy Cladding

Author(s):: LIU Xueqiang; ZUO Jiadong; WANG Yaqiang; ZHANG Jinyu; WU Kai; LIU Gang; SUN Jun; State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China

Keywords:: zirconium alloy cladding; accident-tolerant fuel; nanolaminated coating; microstructure; service performance

摘要:: 日本福岛核事故后，以提升核反应堆事故工况下安全性为目的的事故容错燃料技术成为了世界范围内研究的热点。包壳涂层技术是事故容错燃料短期规划的主要方向，在锆合金燃料包壳表面制备防护涂层能够在不改变现有核包壳管元件产业链的前提下，有效提升失水事故工况下锆合金包壳的事故容错能力。纳米多层涂层由于其固有的特征尺寸效应和界面效应，表现出了优异的核性能，以及在事故容错燃料包壳涂层材料领域的巨大应用潜力。综述了近年来国内外锆合金包壳表面纳米多层涂层的研究进展，主要包括多层涂层的分类、制备技术及服役性能，同时总结了纳米多层涂层的性能优势及应用前景，并对其未来发展前景进行了展望。

Abstract:: After the Fukushima nuclear accident in Japan, the accident-tolerant fuel (ATF) technology for improving the stability and security of nuclear reactors at the loss-of-coolant accident conditions has been a research focus across the world. The cladding coating technology is the main heading direction of ATF in the short-term planning. Without changing the industrial chain of current nuclear cladding tube, the zirconium alloy cladding coated with protective coating can effectively improve the capability of accident tolerance at the loss-of-coolant accident conditions. Due to the inherent size effect and interfacial effect,nanolaminated coatings exhibit excellent nuclear performance, and are regarded as a kind of potential ATF cladding coating materials. This paper reviewed the recent progress in research on nanolaminated coatings on the surface of zirconium alloy cladding, mainly including the category, preparation technology and service performance of nanolaminated coatings. Moreover, the performance advantage and application prospect of nanolaminated coatings were summarized with prospecting the future development.