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Title: Determining oxidation states of transition metals in molten salt corrosion using electron energy loss spectroscopy

Abstract

This work utilizes electron energy loss spectroscopy (EELS) to identify oxidation state of alloying elements in Ni-based alloys after exposure to molten chloride salt systems. Pure Ni and Ni 20Cr model alloy were corroded in molten ZnCl2 and KCl-MgCl2 under argon atmosphere at various temperatures. Oxidation states of Cr (Cr3+) and Ni (Ni2+) in the molten salt after corrosion were determined by monitoring changes in the L2,3 edges of corresponding EELS spectra. Oxidation state mapping technique using principal component analysis and multiple linear least squares fitting in HyperSpy Python package was developed.

Authors:
 [1]; ORCiD logo [1];  [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [4];  [2];  [2]; ORCiD logo [5];  [1]; ORCiD logo [6];  [1]; ORCiD logo [2]; ORCiD logo [1]
  1. Idaho National Lab. (INL), Idaho Falls, ID (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Stony Brook Univ., NY (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
  5. Stony Brook Univ., NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
  6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1777714
Alternate Identifier(s):
OSTI ID: 1765659
Report Number(s):
BNL-221001-2021-JAAM
Journal ID: ISSN 1359-6462
Grant/Contract Number:  
AC05-00OR22725; SC0012704; AC07-05ID14517
Resource Type:
Accepted Manuscript
Journal Name:
Scripta Materialia
Additional Journal Information:
Journal Volume: 197; Journal ID: ISSN 1359-6462
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; molten salt corrosion; electron energy loss spectroscopy; oxidation state mapping; principal component analysis; multiple linear least squares fitting

Citation Formats

Bawane, Kaustubh, Manganaris, Panayotis, Wang, Yachun, Sure, Jagadeesh, Ronne, Arthur, Halstenberg, Phillip, Dai, Sheng, Gill, Simerjeet K., Sasaki, Kotaro, Chen-Wiegart, Yu-chen Karen, Gakhar, Ruchi, Mahurin, Shannon, Pimblott, Simon M., Wishart, James F., and He, Lingfeng. Determining oxidation states of transition metals in molten salt corrosion using electron energy loss spectroscopy. United States: N. p., 2021. Web. doi:10.1016/j.scriptamat.2021.113790.
Bawane, Kaustubh, Manganaris, Panayotis, Wang, Yachun, Sure, Jagadeesh, Ronne, Arthur, Halstenberg, Phillip, Dai, Sheng, Gill, Simerjeet K., Sasaki, Kotaro, Chen-Wiegart, Yu-chen Karen, Gakhar, Ruchi, Mahurin, Shannon, Pimblott, Simon M., Wishart, James F., & He, Lingfeng. Determining oxidation states of transition metals in molten salt corrosion using electron energy loss spectroscopy. United States. https://doi.org/10.1016/j.scriptamat.2021.113790
Bawane, Kaustubh, Manganaris, Panayotis, Wang, Yachun, Sure, Jagadeesh, Ronne, Arthur, Halstenberg, Phillip, Dai, Sheng, Gill, Simerjeet K., Sasaki, Kotaro, Chen-Wiegart, Yu-chen Karen, Gakhar, Ruchi, Mahurin, Shannon, Pimblott, Simon M., Wishart, James F., and He, Lingfeng. Tue . "Determining oxidation states of transition metals in molten salt corrosion using electron energy loss spectroscopy". United States. https://doi.org/10.1016/j.scriptamat.2021.113790. https://www.osti.gov/servlets/purl/1777714.
@article{osti_1777714,
title = {Determining oxidation states of transition metals in molten salt corrosion using electron energy loss spectroscopy},
author = {Bawane, Kaustubh and Manganaris, Panayotis and Wang, Yachun and Sure, Jagadeesh and Ronne, Arthur and Halstenberg, Phillip and Dai, Sheng and Gill, Simerjeet K. and Sasaki, Kotaro and Chen-Wiegart, Yu-chen Karen and Gakhar, Ruchi and Mahurin, Shannon and Pimblott, Simon M. and Wishart, James F. and He, Lingfeng},
abstractNote = {This work utilizes electron energy loss spectroscopy (EELS) to identify oxidation state of alloying elements in Ni-based alloys after exposure to molten chloride salt systems. Pure Ni and Ni 20Cr model alloy were corroded in molten ZnCl2 and KCl-MgCl2 under argon atmosphere at various temperatures. Oxidation states of Cr (Cr3+) and Ni (Ni2+) in the molten salt after corrosion were determined by monitoring changes in the L2,3 edges of corresponding EELS spectra. Oxidation state mapping technique using principal component analysis and multiple linear least squares fitting in HyperSpy Python package was developed.},
doi = {10.1016/j.scriptamat.2021.113790},
journal = {Scripta Materialia},
number = ,
volume = 197,
place = {United States},
year = {Tue Feb 23 00:00:00 EST 2021},
month = {Tue Feb 23 00:00:00 EST 2021}
}

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