Cr^(2+)/Cr^(3+)对FLiNaK熔盐体系电偶腐蚀抑制行为及机理研究  

Effect of Cr/Cron Galvanic Corrosion Inhibition of Dissimilar Metallic Materials in 46.5%LiF-11.5%NaF-42.0%KF Molten Salts System

作　　者：左勇[1,2,3] 秦越强 申淼 杨新梅 ZUO Yong;QIN Yueqiang;SHEN Miao;YANG Xinmei(Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China;Dalian National Laboratory for Clean Energy,Chinese Academy of Sciences,Dalian 116023,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院上海应用物理研究所,上海201800 [2]中国科学院洁净能源创新研究院,大连116023 [3]中国科学院大学,北京100049

出　　处：《中国腐蚀与防护学报》2021年第3期341-345,共5页Journal of Chinese Society For Corrosion and Protection

基　　金：中国科学院战略性先导科技专项(XDA21000000)。

摘　　要：利用腐蚀电化学以及浸泡腐蚀实验结果表明,通过向FLiNaK熔盐体系引入Cr^(2+)/Cr^(3+)氧化还原缓冲离子对,可以使不同金属材料在该熔盐体系的电位差缩小乃至消除,并抑制不同金属材料之间的电偶腐蚀。Galvanic corrosion should be considered when dissimilar metallic materials in contact with each other in a molten salt system of high ionic conductivity. Corrosion electrochemistry and immersion corrosion tests indicated that the difference of the corrosion potentials of different metal materials can be decreased or diminished by coupling Cr^(2+)/Cr^(3+)into the 46.5%LiF-11.5%NaF-42.0%KF(in mole fraction) molten salt. Thus, the galvanic corrosion behavior between different metal materials can be effectively inhibited.

关 键 词：熔盐 电偶腐蚀 氧化还原缓冲离子对 腐蚀抑制 

分 类 号：O646.6[理学—物理化学]