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Hot corrosion behaviour of nickel-cobalt-based alloys in a lithium molten salt
- Authors
- Cho, Soo Haeng; Kwon, Suk Cheol; Kim, Dae Young; Choi, Woo Seok; Kim, Yong Soo; Lee, Jong Hyeon
- Issue Date
- May-2019
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Hot corrosion; Ni,Co-based alloy; Lithium molten salt; Electrolytic reduction; Structural material
- Citation
- CORROSION SCIENCE, v.151, pp.20 - 26
- Indexed
- SCIE
SCOPUS
- Journal Title
- CORROSION SCIENCE
- Volume
- 151
- Start Page
- 20
- End Page
- 26
- ISSN
- 0010-938X
- Abstract
- 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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