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

Kaustubh Bawane; Panayotis Manganaris; Yachun Wang; Jagadeesh Sure; Arthur Ronne; Phillip Halstenberg; Sheng Dai; Simerjeet K. Gill; Kotaro Sasaki; Yu chen Karen Chen-Wiegart; Ruchi Gakhar; Shannon Mahurin; Simon M. Pimblott; James F. Wishart; Lingfeng He

doi:10.1016/j.scriptamat.2021.113790

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

Kaustubh Bawane
, Panayotis Manganaris
, Yachun Wang
, Jagadeesh Sure
, Arthur Ronne
, Phillip Halstenberg
, Sheng Dai
, Simerjeet K. Gill
, Kotaro Sasaki
, Yu chen Karen Chen-Wiegart
, Ruchi Gakhar
, Shannon Mahurin
, Simon M. Pimblott
, James F. Wishart
, Lingfeng He

Materials Science and Engineering

Idaho National Laboratory
Brookhaven National Laboratory
Stony Brook University
Oak Ridge National Laboratory
University of Tennessee

Research output: Contribution to journal › Article › peer-review

35 Scopus citations

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 L_2,3 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.

Original language	English
Article number	113790
Journal	Scripta Materialia
Volume	197
DOIs	https://doi.org/10.1016/j.scriptamat.2021.113790
State	Published - May 2021

Keywords

Electron energy loss spectroscopy
Molten salt corrosion
Multiple linear least squares fitting
Oxidation state mapping
Principal component analysis

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10.1016/j.scriptamat.2021.113790

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Bawane, K., Manganaris, P., Wang, Y., Sure, J., Ronne, A., Halstenberg, P., Dai, S., Gill, S. K., Sasaki, K., Chen-Wiegart, Y. C. K., Gakhar, R., Mahurin, S., Pimblott, S. M., Wishart, J. F., & He, L. (2021). Determining oxidation states of transition metals in molten salt corrosion using electron energy loss spectroscopy. Scripta Materialia, 197, Article 113790. https://doi.org/10.1016/j.scriptamat.2021.113790

@article{e0bc947cc4bb4243b24256d9055f2da7,

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.",

keywords = "Electron energy loss spectroscopy, Molten salt corrosion, Multiple linear least squares fitting, Oxidation state mapping, Principal component analysis",

author = "Kaustubh Bawane and Panayotis Manganaris and Yachun Wang and Jagadeesh Sure and Arthur Ronne and Phillip Halstenberg and Sheng Dai and Gill, \{Simerjeet K.\} and Kotaro Sasaki and Chen-Wiegart, \{Yu chen Karen\} and Ruchi Gakhar and Shannon Mahurin and Pimblott, \{Simon M.\} and Wishart, \{James F.\} and Lingfeng He",

note = "Publisher Copyright: {\textcopyright} 2021",

year = "2021",

month = may,

doi = "10.1016/j.scriptamat.2021.113790",

language = "English",

volume = "197",

journal = "Scripta Materialia",

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Bawane, K, Manganaris, P, Wang, Y, Sure, J, Ronne, A, Halstenberg, P, Dai, S, Gill, SK, Sasaki, K, Chen-Wiegart, YCK, Gakhar, R, Mahurin, S, Pimblott, SM, Wishart, JF & He, L 2021, 'Determining oxidation states of transition metals in molten salt corrosion using electron energy loss spectroscopy', Scripta Materialia, vol. 197, 113790. https://doi.org/10.1016/j.scriptamat.2021.113790

TY - JOUR

T1 - Determining oxidation states of transition metals in molten salt corrosion using electron energy loss spectroscopy

AU - Bawane, Kaustubh

AU - Manganaris, Panayotis

AU - Wang, Yachun

AU - Sure, Jagadeesh

AU - Ronne, Arthur

AU - Halstenberg, Phillip

AU - Dai, Sheng

AU - Gill, Simerjeet K.

AU - Sasaki, Kotaro

AU - Chen-Wiegart, Yu chen Karen

AU - Gakhar, Ruchi

AU - Mahurin, Shannon

AU - Pimblott, Simon M.

AU - Wishart, James F.

AU - He, Lingfeng

PY - 2021/5

Y1 - 2021/5

N2 - 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.

AB - 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.

KW - Electron energy loss spectroscopy

KW - Molten salt corrosion

KW - Multiple linear least squares fitting

KW - Oxidation state mapping

KW - Principal component analysis

UR - https://www.scopus.com/pages/publications/85101299823

U2 - 10.1016/j.scriptamat.2021.113790

DO - 10.1016/j.scriptamat.2021.113790

M3 - Article

AN - SCOPUS:85101299823

SN - 1359-6462

VL - 197

JO - Scripta Materialia

JF - Scripta Materialia

M1 - 113790

ER -

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

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