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Effects of Chromate and Vanadate Anions on the Hot Corrosion of Preoxidized Ni by a Thin Fused Na2 SO 4 Film at 900°C
Open accessAbstract
The effects of chromate and vanadate anions on the hot corrosion of preoxidized Ni by a thin fused film in an gas atmosphere at 900°C were investigated by use of a sodium sensor and an oxygen probe. The chromate anion suppressed the sulfidation of Ni probably by precipitating solid from the melt. However, the corrosion rate during self‐sustained hot corrosion was faster than for a pure sodium sulfate melt, probably due to the fast counterdiffusion of species. The vanadate anion rapidly attacked the protective oxide and enhanced the sulfidation of Ni causing a self‐sustained hot corrosion of Ni.
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The redox potential of CrO4 2-/Cr2O3 is lower than that for the reduction of sulfate ions.
“The redox potential of CrO4 2- /Cr2O3 is lower than that for the reduction of sulfate ions [101].”
From A review on molten sulfate salts induced hot corrosion (2021) · cites this paper as [101]
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A review on molten sulfate salts induced hot corrosion
Hu, S., Finklea, H., & Liu, X. (2021) · Journal of Materials Science & Technology · doi:10.1016/j.jmst.2021.03.013 · Cited by 183
Metadata
- Authors
- Otsuka, N., & Rapp, R. A.
- Affiliations
- Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio 43210
- The Ohio State University (US)
- Venue
- Journal of The Electrochemical Society
- Publisher
- The Electrochemical Society
- Published
- 1990-01-01
- Volume
- 137
- Issue
- 1
- Pages
- 53-60
- ISSN
- 0013-4651 (ISSN-L)
- 1945-7111
- OpenAlex
- W2006571974
- Cited by
- 50
- References
- 0
- Citations by year
- 2026: 1 · 2025: 1 · 2024: 1 · 2023: 1 · 2022: 5 · 2021: 4 · 2020: 1 · 2019: 3 · 2018: 3 · 2017: 3 · 2016: 3 · 2015: 4 · 2014: 2
- FWCI
- 7.27
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- Journal of The Electrochemical Society (publishedVersion)
- Funders
- National Science Foundation (8620311)
- Division of Materials Research
- Topics
- Physical Sciences › Materials Science › Surfaces, Coatings and Films › High-Temperature Coating Behaviors
- Physical Sciences › Chemistry › Electrochemistry › Molten salt chemistry and electrochemical processes
- Physical Sciences › Materials Science › Materials Chemistry › Advancements in Solid Oxide Fuel Cells
- Keywords
- hot corrosion, chromate anion, vanadate anions, sulfidation, counter-diffusion, molten salt corrosion
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