Abstract Next-generation nuclear reactor concepts and advanced techniques for reprocessing spent nuclear fuel (SNF) are drawing great attention in the nuclear field. Molten halide salts have been proposed as the fuel solvent and coolants for many molten salt reactor (MSR) concepts, and the electrolyte for the electrochemical separation of the SNF. The major concern of using molten salts is the corrosion of the structural materials imposed by these extreme environments. Materials corrosion is more challenging in the molten salt nuclear systems than in the traditional water reactors as the formation of the passivating oxide layer on the corrosion resistant alloys becomes thermodynamically unfavorable in molten salts and the use of many corrosion resistant alloys is restricted. This review takes a comprehensive approach covering all relevant work in the field: corrosion data accumulated since the 1950s to date, major corrosion problems and corresponding mechanisms, metallurgical factors, historical development of corrosion resistant alloys and recent attempts. The key environmental factors influencing corrosion in various nuclear systems, electrode kinetics, thermodynamic properties, and corrosion prevention techniques are also reviewed. Finally, current progress and challenges are summarized with an attempt at identifying knowledge gaps and future research directions.

中文翻译：

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用于核应用的熔融氟化物和氯化物盐和材料开发中的腐蚀

摘要 下一代核反应堆的概念和先进的乏核燃料（SNF）后处理技术正引起核领域的高度关注。熔融卤化物盐已被提议作为许多熔融盐反应堆 (MSR) 概念的燃料溶剂和冷却剂，以及用于 SNF 电化学分离的电解质。使用熔盐的主要问题是这些极端环境对结构材料的腐蚀。熔盐核系统中的材料腐蚀比传统的水反应堆更具挑战性，因为耐腐蚀合金上钝化氧化层的形成在熔盐中在热力学上变得不利，并且许多耐腐蚀合金的使用受到限制。这篇综述采用了涵盖该领域所有相关工作的综合方法：自 1950 年代至今积累的腐蚀数据、主要腐蚀问题和相应机制、冶金因素、耐腐蚀合金的历史发展和最近的尝试。还回顾了影响各种核系统腐蚀的关键环境因素、电极动力学、热力学特性和腐蚀预防技术。最后，总结了当前的进展和挑战，试图找出知识差距和未来的研究方向。还回顾了影响各种核系统腐蚀的关键环境因素、电极动力学、热力学特性和腐蚀预防技术。最后，总结了当前的进展和挑战，试图找出知识差距和未来的研究方向。还回顾了影响各种核系统腐蚀的关键环境因素、电极动力学、热力学特性和腐蚀预防技术。最后，总结了当前的进展和挑战，试图找出知识差距和未来的研究方向。