熔盐
腐蚀
阴极保护
氟化物
电化学
材料科学
盐(化学)
冶金
熔盐反应器
集电器
无机化学
氧化还原
电极
化学
有机化学
物理化学
电解质
作者
Krishna Moorthi Sankar,Preet M. Singh
出处
期刊:Corrosion
[NACE International]
日期:2023-05-16
卷期号:79 (7): 809-814
摘要
Molten fluoride salts are candidate heat transfer fluids in a number of applications such as generation IV molten salt nuclear reactors and concentrated solar power plants. However, a chief concern in the design of these systems is the corrosion of structural materials that come in contact with these molten salts. Redox control methods such as the purification of salt, the addition of active elements, and applied electrochemical potential can be efficient methods for preventing the corrosion of structural materials in molten fluoride salts. Applied electrochemical potential as a redox control method for application in molten fluoride salts has rarely been explored. This study seeks to understand the viability of impressed current cathodic protection (CP) at various currents as a redox control method to prevent corrosion of stainless steel 316H in molten LiF-NaF-KF (FLiNaK) salt. Results show that application of CP can be an effective method to prevent corrosion of SS316H in molten FLiNaK salt, but the applied current will have to be optimized to prevent undesirable side effects such as reduction of salt constituents, salt deposition on electrodes, etc.
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