{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T16:24:00Z","timestamp":1790785440529,"version":"4.1.0"},"reference-count":52,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2025,4,3]],"date-time":"2025-04-03T00:00:00Z","timestamp":1743638400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Research Foundation of Korea (NRF)","award":["NRF-2021M2D2A2076384"],"award-info":[{"award-number":["NRF-2021M2D2A2076384"]}]},{"name":"National Research Foundation of Korea (NRF)","award":["RS-2024-00402102"],"award-info":[{"award-number":["RS-2024-00402102"]}]},{"name":"Korea Institute of Energy Technology Evaluation and Planning (KETEP)","award":["NRF-2021M2D2A2076384"],"award-info":[{"award-number":["NRF-2021M2D2A2076384"]}]},{"name":"Korea Institute of Energy Technology Evaluation and Planning (KETEP)","award":["RS-2024-00402102"],"award-info":[{"award-number":["RS-2024-00402102"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>The molten salt reactor is a fourth-generation nuclear power plant considered a long-term eco-friendly energy source with high efficiency and the potential for green hydrogen production. The selection of alloys for such reactors, which can operate for more than 30 years, is a primary concern because of corrosion by high-temperature molten salt. In this study, three Fe- and Ni-based alloys were selected as structural material candidates. Corrosion immersion tests were conducted in NaCl\u2013KCl molten salt for 48 h at 800 \u00b0C and 40% RH conditions in an air environment. In the absence of moisture and oxygen removal, ClNaK salt-induced damage was observed in the investigated alloys. The corrosion behavior of the alloys was characterized using various techniques, including scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and Auger electron spectroscopy. The results show that the corrosion process can be explained by salt-induced surface damage, internal ion migration, and depletion to the surface. The corrosion rate is high in SS316L (16Cr-Fe), N10003 (7Cr-Ni), and C-276 (16Cr-Ni), in decreasing order. Based on the corrosion penetration, ion elution, and interfacial diffusion results, C-276 and N10003 are good candidates for structural materials for MSRs. Therefore, Ni-based alloys with high Cr content minimize surface damage and ion depletion in unpurified molten salt environments. This indicates that Ni-based alloys with high Cr content exhibit highly corrosion resistance.<\/jats:p>","DOI":"10.3390\/ma18071653","type":"journal-article","created":{"date-parts":[[2025,4,4]],"date-time":"2025-04-04T03:36:45Z","timestamp":1743737805000},"page":"1653","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["A Study on the Corrosion Behavior of Fe\/Ni-Based Structural Materials in Unpurified Molten Chloride Salt"],"prefix":"10.3390","volume":"18","author":[{"given":"Unho","family":"Lee","sequence":"first","affiliation":[{"name":"Department of Materials Science and Engineering, Gachon University, 1342, Seongnam-daero, Sujeong-gu, Seongnam-si 13120, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Min Wook","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering, Gachon University, 1342, Seongnam-daero, Sujeong-gu, Seongnam-si 13120, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-1055-8237","authenticated-orcid":false,"given":"Jisu","family":"Na","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering, Gachon University, 1342, Seongnam-daero, Sujeong-gu, Seongnam-si 13120, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mingyu","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering, Gachon University, 1342, Seongnam-daero, Sujeong-gu, Seongnam-si 13120, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8917-6461","authenticated-orcid":false,"given":"Sung Joong","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Nuclear Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5013-4005","authenticated-orcid":false,"given":"Dong-Joo","family":"Kim","sequence":"additional","affiliation":[{"name":"Materials Research and Education Center, Auburn University, 275 Wilmore Labs, Auburn, AL 36849, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0214-9701","authenticated-orcid":false,"given":"Young Soo","family":"Yoon","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering, Gachon University, 1342, Seongnam-daero, Sujeong-gu, Seongnam-si 13120, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,4,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2178","DOI":"10.1016\/j.enconman.2008.01.033","article-title":"Life cycle energy and greenhouse gas emissions of nuclear energy: A review","volume":"49","author":"Lenzen","year":"2008","journal-title":"Energy Convers. 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