Journal
CORROSION SCIENCE
Volume 151, Issue -, Pages 20-26Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2019.01.041
Keywords
Hot corrosion; Ni,Co-based alloy; Lithium molten salt; Electrolytic reduction; Structural material
Funding
- Technology Innovation Program (Development of eco-friendly smelting technology for the production of rare metal production for lowering manufacturing costs using solid oxide membrane) [10063427]
- Human Resources Program in Energy Technoloy of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) - Ministry of Trade, Industry & Energy (MOTIE), Republic of Korea [20184030201970]
- National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning (MSIP), Republic of Korea [2017M2B2B1072888, 2017M2B2B1072889]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20184030201970] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2017M2B2B1072889, 2017M2B2B1072888] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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In this study, hot corrosion behaviours of Haynes 282 (H282), Nimonic 90 (N90), and Haynes HR160 (HR160) in LiCI-Li2O molten salt were investigated at 650 degrees C under argon atmosphere. The corrosion rate was in the order of H282 < N90 < HR160, depending on the morphology and structure of the scale. H282 showed a localised corrosion behaviour, while N90 showed a uniform corrosion behaviour. For HR-160, intergranular corrosion was observed. The high Cr content caused intergranular corrosion in the corrosion layer. Thus, excess Cr has a deleterious effect on the corrosion kinetics during hot corrosion in LiCI-Li2O molten salt.
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