Effect of excess Mg to control corrosion in molten MgCl2 and KCl eutectic salt mixture
Abstract
Structural alloys may experience corrosion when exposed to molten chloride salts due to selective dissolution of active alloying elements. One way to prevent this is to make the molten salt reducing. For the KCl + MgCl2 eutectic salt mixture, pure Mg can be added to achieve this. However, Mg can form intermetallic compounds with nickel at high temperatures, which may cause alloy embrittlement. This work shows that an optimum level of excess Mg could be added to the molten salt which will prevent corrosion of alloys like 316 H, while not forming any detectable Ni-Mg intermetallic phases on Ni-rich alloy surfaces.
- Authors:
-
- Georgia Inst. of Technology, Atlanta, GA (United States)
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Georgia Inst. of Technology, Atlanta, GA (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sandia National Lab. (SNL-CA), Livermore, CA (United States)
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Sandia National Lab. (SNL-CA), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1834148
- Report Number(s):
- SAND-2021-14085J
Journal ID: ISSN 0010-938X; 701379
- Grant/Contract Number:
- NA0003525
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Corrosion Science
- Additional Journal Information:
- Journal Volume: 194; Journal ID: ISSN 0010-938X
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; dealloying; DFT corrosion simulations; molten chloride salts; molten salt corrosion; molten salt reactors (MSR); selective dissolution
Citation Formats
Hanson, Kasey, Sankar, Krishna Moorthi, Weck, Philippe F., Startt, Jacob K., Dingreville, Remi, Deo, Chaitanya S., Sugar, Joshua D., and Singh, Preet M. Effect of excess Mg to control corrosion in molten MgCl2 and KCl eutectic salt mixture. United States: N. p., 2021.
Web. doi:10.1016/j.corsci.2021.109914.
Hanson, Kasey, Sankar, Krishna Moorthi, Weck, Philippe F., Startt, Jacob K., Dingreville, Remi, Deo, Chaitanya S., Sugar, Joshua D., & Singh, Preet M. Effect of excess Mg to control corrosion in molten MgCl2 and KCl eutectic salt mixture. United States. https://doi.org/10.1016/j.corsci.2021.109914
Hanson, Kasey, Sankar, Krishna Moorthi, Weck, Philippe F., Startt, Jacob K., Dingreville, Remi, Deo, Chaitanya S., Sugar, Joshua D., and Singh, Preet M. Wed .
"Effect of excess Mg to control corrosion in molten MgCl2 and KCl eutectic salt mixture". United States. https://doi.org/10.1016/j.corsci.2021.109914. https://www.osti.gov/servlets/purl/1834148.
@article{osti_1834148,
title = {Effect of excess Mg to control corrosion in molten MgCl2 and KCl eutectic salt mixture},
author = {Hanson, Kasey and Sankar, Krishna Moorthi and Weck, Philippe F. and Startt, Jacob K. and Dingreville, Remi and Deo, Chaitanya S. and Sugar, Joshua D. and Singh, Preet M.},
abstractNote = {Structural alloys may experience corrosion when exposed to molten chloride salts due to selective dissolution of active alloying elements. One way to prevent this is to make the molten salt reducing. For the KCl + MgCl2 eutectic salt mixture, pure Mg can be added to achieve this. However, Mg can form intermetallic compounds with nickel at high temperatures, which may cause alloy embrittlement. This work shows that an optimum level of excess Mg could be added to the molten salt which will prevent corrosion of alloys like 316 H, while not forming any detectable Ni-Mg intermetallic phases on Ni-rich alloy surfaces.},
doi = {10.1016/j.corsci.2021.109914},
journal = {Corrosion Science},
number = ,
volume = 194,
place = {United States},
year = {Wed Oct 27 00:00:00 EDT 2021},
month = {Wed Oct 27 00:00:00 EDT 2021}
}
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