The corrosion behaviours of Ni-Mo-Cr alloy and 316 stainless steel samples after immersing in NaCl-KCl-AlCl3 salt at 400.0°C for 168 h were investigated. The surface of Ni-Mo-Cr alloy basically kept its pre-corrosion morphology, with only a few corrosion pits. While NaCl-KCl-AlCl3 salt had stronger corrosivity to 316SS. After corrosion, the grain boundary of the surface of 316SS alloy was clearly visible, and the Fe and Cr atoms on the surface of 316SS were selectively corroded, leaving a Ni- rich layer of about 6.5 µm on the outmost surface of 316SS. At the temperature of 400.0°C, the corrosion resistance of Ni-Mo-Cr alloy to molten NaCl-KCl-AlCl3 salt was better than that of 316SS.
RobelinCChartrandPPeltonAD.Thermodynamic evaluation and optimization of the (NaCl+KCl+AlCl3) system. J Chem Thermodyn2004; 36: 683–699.
2.
SunSWangY.Effects of Ce and Ti on Al-Mn alloy electrodeposition coating on steel[J]. J-Northeast Univ Nat Sci.1999; 20: 395–397.
3.
UedaMKigawaHOhtsukaT.Co-deposition of Al–Cr–Ni alloys using constant potential and potential pulse techniques in AlCl3–NaCl–KCl molten salt. Electrochim Acta. 2007; 52: 2515–2519.
4.
TsudaTSasakiJUemuraY. Aluminum metal anode rechargeable batteries with sulfur–carbon composite cathodes and inorganic chloroaluminate ionic liquid. Chem Commun2022; 58: 1518–1521.
5.
ZhangWLiaoCNingX.An advanced Ni–graphite molten salt battery with 95°C operating temperature for energy storage application. Chem Eng J. 2022; 435: 135110.
6.
WangJJiaoHSongWL. Stable interface between a NaCl–AlCl3 melt and a liquid Ga negative electrode for a long-life stationary Al-ion energy storage battery. ACS Appl Mater Interfaces. 2020; 12: 15063.
7.
LiC-JLiPWangK. Survey of properties of key single and mixture halide salts for potential application as high temperature heat transfer fluids for concentrated solar thermal power systems. AIMS Energy. 2014; 2: 133–157.
8.
SarvghadMDelkasar MaherSCollardD. Materials compatibility for the next generation of concentrated solar power plants. Energy Storage Mater.2018; 14: 179–198.
9.
DingWGomez-VidalJBonkA. Molten chloride salts for next generation CSP plants: electrolytical salt purification for reducing corrosive impurity level. Sol Energy Mater Sol Cells. 2019; 199: 8–15.
10.
GuoSZhangJWuW. Corrosion in the molten fluoride and chloride salts and materials development for nuclear applications. Prog Mater Sci2018; 97: 448–487.
11.
KruizengaAM.Corrosion mechanisms in chloride and carbonate salts. Albuquerque: Sandia National Laboratories; 2012.
12.
LaiXYinHLiP. The corrosion behavior of 304 stainless steel in NaNO3–NaCl–NaF molten salt and vapor. RSC Adv2022; 12: 7157–7163.
13.
LiXLiuWTangZ. Insight into dynamic interaction of molten MgCl2-NaCl-KCl with impurity water via FPMD simulations. J Mol Liq2020; 314: 113596.
14.
WilliamsDF.Assessment of candidate molten salt coolants for the NGNP/NHI heat transfer loop. Oak Ridge (TN): Oak Ridge National Lab.; 2006.
15.
LiuBWeiXWangW. Corrosion behavior of Ni-based alloys in molten NaCl-CaCl2 -MgCl2 eutectic salt for concentrating solar power. Sol Energy Mater Sol Cells. 2017; 170: 77–86.
16.
SunHWangJLiZ. Corrosion behavior of 316SS and Ni-based alloys in a ternary NaCl-KCl-MgCl2 molten salt. Sol Energy. 2018; 171: 320–329.
17.
LiuQXuHYinH. Corrosion behaviour of 316 stainless steel in NaCl-KCl-MgCl2 salt vapour at 700°C. Corros Sci2022; 194: 109921.
18.
LiuQWangZLiuW. Ni-Mo-Cr alloy corrosion in molten NaCl-KCl-MgCl2 salt and vapour. Corros Sci2021; 180: 109183.
19.
Gomez-VidalJCTirawatR.Corrosion of alloys in a chloride molten salt (NaCl-LiCl) for solar thermal technologies. Sol Energy Mater Sol Cells. 2016; 157: 234–244.
20.
PoojaMRavishankarKSMadavV.High temperature corrosion behaviour of stainless steels and Inconel 625 in hydroxide salt. Mater Today Proc.2021; 46: 2612–2615.
21.
WangYLiXLiN. Thermal transport and storage performances of NaCl–KCl–NaF eutectic salt for high temperatures latent heat. Sol Energy Mater Sol Cells. 2020; 218: 110756.
22.
LiuQSunHYinH. Corrosion behaviour of 316H stainless steel in molten FLiNaK eutectic salt containing graphite particles. Corros Sci2019; 160: 108174.
23.
ErnstFCaoYMichalGM. Carbide precipitation in austenitic stainless steel carburized at low temperature. Acta Mater.2007; 55: 1895–1906.
24.
SunHWangJQTangZ. Assessment of effects of Mg treatment on corrosivity of molten NaCl-KCl-MgCl2 salt with Raman and infrared spectra. Corros Sci2020; 164: 108350.
25.
RaimanSSLeeS.Aggregation and data analysis of corrosion studies in molten chloride and fluoride salts. J Nucl Mater2018; 511: 523–535.
26.
DingWBonkABauerT.Corrosion behavior of metallic alloys in molten chloride salts for thermal energy storage in concentrated solar power plants: a review. Front Chem Sci Eng.2018; 12: 564–576.
27.
KnosallaCLauMSchmiesL. Investigation on the corrosion behavior of nickel-base alloys in molten chlorides for sensible heat energy applications. Adv Eng Mater2020; 22: 2000099.
28.
ZuoYSongYLTangR. A novel purification method for fluoride or chloride molten salts based on the redox of hydrogen on a nickel electrode. RSC Adv2021; 11: 35069–35076.
29.
FernándezAGCabezaLF.Corrosion monitoring and mitigation techniques on advanced thermal energy storage materials for CSP plants. Sol Energy Mater Sol Cells. 2019; 192: 179–187.
