Hot corrosion of materials: a fluxing mechanism?
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Ca and Na could increase the basicity of the salt mixture, altering the solubility of the different metal oxides.
“Those could increase the basicity of the salt mixture, which will alter the solubility of the different metal oxides [40].”
From Fireside corrosion and deposition on heat exchangers in biomass combustion systems (2023) · cites this paper as [40]
The solubilities and dissolution mechanisms of metal oxides in molten Na2SO4 depend on the value of -log(aNa2O).
“As discussed below, the solubilities and dissolution mechanisms of metal oxides in molten Na2SO4 are dependent on the value of -log(aNa2O).”
From A review on molten sulfate salts induced hot corrosion (2021) · cites this paper as [74]
For each metal oxide except SiO2, there is a basicity value at which its solubility in pure molten Na2SO4 reaches a minimum.
“There is a basicity value for each oxide at which the solubility reaches the minimal value except SiO2.”
From A review on molten sulfate salts induced hot corrosion (2021) · cites this paper as [74]
For metal oxides with multiple valences available for the metal (e.g., cobalt, chromium and iron oxides), solubilities depend on the metal oxidation states, which in turn depend on the oxygen partial pressure.
“For metal oxides with multiple valences available for the metal (e.g., cobalt, chromium and iron oxides), solubilities depend on the metal oxidation states, which in turn is dependent on the oxygen partial pressure [68, 69, 74, 75].”
From A review on molten sulfate salts induced hot corrosion (2021) · cites this paper as [74]
Cites
Mechanisms for the hot corrosion of nickel-base alloys
Goebel, J. A., Pettit, F. S., & Goward, G. W. (1973) · Metallurgical Transactions · doi:10.1007/bf02649626 · Cited by 420 · see citing works
The Solubilities of NiO , Co3 O 4, and Ternary Oxides in Fused Na2 SO 4 at 1200°K
Gupta, D. K., & Rapp, R. A. (1980) · Journal of The Electrochemical Society · doi:10.1149/1.2129374 · Cited by 94 · see citing works
Self-citationSolubility of α ‐ Al2 O 3 in Fused Na2 SO 4 at 1200 K
Jose, P. D., Gupta, D. K., & Rapp, R. A. (1985) · Journal of The Electrochemical Society · doi:10.1149/1.2113944 · Cited by 58 · see citing works
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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 · see citing works
Effects of external stresses on hot corrosion behavior of stainless steel TP347HFG
Fu, J., Zhou, Q., Li, N., Liu, Z., & Liu, T. (2016) · Corrosion Science · doi:10.1016/j.corsci.2015.11.037 · Cited by 31 · see citing works
Breakdown mechanism of γ-Al2O3 on Ni2Al3 coatings exposed in a biomass fired power plant
Wu, D. L., Dahl, K. V., Grumsen, F. B., Christiansen, T. L., Montgomery, M., & Hald, J. (2020) · Corrosion Science · doi:10.1016/j.corsci.2020.108583 · Cited by 16 · see citing works
Fireside corrosion and deposition on heat exchangers in biomass combustion systems
Mori, S., Sanusi, T., Simms, N., & Sumner, J. (2023) · Materials at High Temperatures · doi:10.1080/09603409.2022.2138007 · Cited by 8 · see citing works
- Authors
- Rapp, R. A.
- Affiliations
- The Ohio State University (US)
- Corresponding author
- Rapp, Robert A
- Venue
- Corrosion Science
- Publisher
- Elsevier BV
- Published
- 2002-02
- Volume
- 44
- Issue
- 2
- Pages
- 209-221
- ISSN
- 0010-938X (ISSN-L)
- OpenAlex
- W2060837241
- Cited by
- 529
- References
- 3
- Citations by year
- 2026: 39 · 2025: 39 · 2024: 43 · 2023: 30 · 2022: 32 · 2021: 34 · 2020: 35 · 2019: 32 · 2018: 26 · 2017: 33 · 2016: 29 · 2015: 18 · 2014: 22 · 2013: 21 · 2012: 12
- FWCI
- 12.00
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Corrosion Science (publishedVersion)
- Topics
- Physical Sciences › Engineering › Aerospace Engineering › High-Temperature Coating Behaviors
- Physical Sciences › Materials Science › Materials Chemistry › Corrosion Behavior and Inhibition
- Physical Sciences › Engineering › Mechanical Engineering › Metallurgical Processes and Thermodynamics
- Keywords
- hot corrosion, electrochemical corrosion, oxide solubility, protective oxide scale, corrosion products
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Statistics and arithmetic are recomputed, not judged.
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