2·6H2O in-situ self-generated MgO on the corrosion of KCl-MgCl2 molten salt was investigated. The results show that after 72 h of corrosion in KCl-MgCl2, KCl-MgCl2+5wt% MgO and KCl-MgCl2+5wt% MgCl2·6H2O, the mass loss of Inconel 625 cladding metal is 0.00714, 0.00512, and 0.00308 g·cm-2, respectively. The corrosion rate of Inconel 625 cladding metal in molten salt with in-situ self-generated MgO is decreased by 56.86% and 39.85%. Although the addition of nano-MgO particles in the molten salt can alleviate the corrosion of the chloride molten salt, the molten salt is agglomerated or settled, leading to a non-uniform distribution of MgO and MgCr2O4 protective shell layers. Adding MgCl2·6H2O to the molten salt can generate in-situ MgO, and the generated MgO and MgCr2O4 protective shells are more uniform, which hinder the erosion of corrosive media, so it is an effective method to reduce the corrosion of chloride molten salt."/>
School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China
[Yang Taisen, Zhang Guiqing, Dai Zhiyong, Liang Xuewei, Wang Yingdi, Su Yunhai. Effect of In-situ Self-Generated MgO on Corrosion Resistance of KCl-MgCl2 Molten Salt[J]. Rare Metal Materials and Engineering,2024,53(5):1268~1276.]
DOI:10.12442/j. issn.1002-185X.20230516