Alloys compatibility in molten salt fluorides: Kurchatov Institute related experience
Alloys compatibility in molten salt fluorides: Kurchatov Institute related experience
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DOI：
10.1016/j.jnucmat.2013.05.007
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发表时间：
2013-10
影响因子：
3.1
通讯作者：
V. Ignatiev;A. Surenkov
中科院分区：
文献类型：
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作者：
V. Ignatiev;A. Surenkov
在过去几年中，人们对在核电系统中使用高温熔盐氟化物越来越感兴趣。对于所有熔盐反应堆设计，材料选择是一个非常重要的问题。本文总结了结果，从而为俄罗斯熔盐反应堆材料的选择提供了依据。腐蚀热对流回路的运行经验表明，“镍钼合金+以 UF4 和 PuF3+ 保护气体为燃料的氟化盐”系统在高达 750 °C 的温度下具有良好的性能。简要描述了正在进行的容器材料工作。镍基合金在应力和空载条件下的碲腐蚀研究也在温度高达 700–750 °C 的不同熔盐混合物中进行了测试，同时还测量了氧化还原电位。添加1%Al的HN80MTY合金是正在研究的镍基合金中最能抵抗碲晶间裂纹的合金。
In the last several years, there has been an increased interest in the use of high-temperature molten salt fluorides in nuclear power systems. For all molten salt reactor designs, materials selection is a very important issue. This paper summarizes results, which led to selection of materials for molten salt reactors in Russia. Operating experience with corrosion thermal convection loops has demonstrated good capability of the “nickel–molybdenum alloys + fluoride salt fueled by UF4and PuF3+ cover gas” system up to 750 °C. A brief description is given of the container material work in progress. Tellurium corrosion of Ni-based alloys in stressed and unloaded conditions studies was also tested in different molten salt mixtures at temperatures up to 700–750 °C, also with measurement of the redox potential. HN80MTY alloy with 1% added Al is the most resistant to tellurium intergranular cracking of Ni-base alloys under study.