Redox potential control in molten salt systems for corrosion mitigation

Jinsuo Zhang; Charles W. Forsberg; Michael F. Simpson; Shaoqiang Guo; Stephen T. Lam; Raluca O. Scarlat; Francesco Carotti; Kevin J. Chan; Preet M. Singh; William Doniger; Kumar Sridharan; James R. Keiser

doi:10.1016/j.corsci.2018.08.035

Redox potential control in molten salt systems for corrosion mitigation

Jinsuo Zhang, Charles W. Forsberg, Michael F. Simpson, Shaoqiang Guo, Stephen T. Lam, Raluca O. Scarlat, Francesco Carotti, Kevin J. Chan, Preet M. Singh, William Doniger, Kumar Sridharan, James R. Keiser

Corrosion Science & Technology

Research output: Contribution to journal › Review article › peer-review

128 Scopus citations

Abstract

In a molten salt nuclear reactor system, the redox potential must be controlled for mitigating corrosion of structural materials. The paper presented a critical review on the available knowledge of redox potential control in molten fluoride salt systems. The major phenomena that affect the redox potential and material corrosion are fission, TF production by transmutation, and salt contamination with metal fluorides or other oxidizing impurities. Redox potential control methodologies include gas sparging, contacting the salt with a reducing metal, and adding soluble salt redox buffers to the salt. Redox potential measurement technologies include electrochemical sensors and optical spectroscopy. The paper also analyzed the current technology issues and recommended near future studies.

Original language	English
Pages (from-to)	44-53
Number of pages	10
Journal	Corrosion Science
Volume	144
DOIs	https://doi.org/10.1016/j.corsci.2018.08.035
State	Published - Nov 2018

Funding

The study was made possible by projects funded by Office of Nuclear Energy of U.S. Department of Energy , Award Number DE-NE0008306 and DE-NE-0008285 . Scarlat and Carotti acknowledge the support of the U.S. Nuclear Regulatory Commission project NRC-HQ-84-15-G-0046 and of the U.S. Department of Energy Office of Nuclear Energy projects 15-8352, 16-10647 , 17-13232 and IRP-17-14541 .

Keywords

Corrosion
Molten salt reactor
Redox potential control

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10.1016/j.corsci.2018.08.035

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title = "Redox potential control in molten salt systems for corrosion mitigation",

abstract = "In a molten salt nuclear reactor system, the redox potential must be controlled for mitigating corrosion of structural materials. The paper presented a critical review on the available knowledge of redox potential control in molten fluoride salt systems. The major phenomena that affect the redox potential and material corrosion are fission, TF production by transmutation, and salt contamination with metal fluorides or other oxidizing impurities. Redox potential control methodologies include gas sparging, contacting the salt with a reducing metal, and adding soluble salt redox buffers to the salt. Redox potential measurement technologies include electrochemical sensors and optical spectroscopy. The paper also analyzed the current technology issues and recommended near future studies.",

keywords = "Corrosion, Molten salt reactor, Redox potential control",

author = "Jinsuo Zhang and Forsberg, {Charles W.} and Simpson, {Michael F.} and Shaoqiang Guo and Lam, {Stephen T.} and Scarlat, {Raluca O.} and Francesco Carotti and Chan, {Kevin J.} and Singh, {Preet M.} and William Doniger and Kumar Sridharan and Keiser, {James R.}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2018",

month = nov,

doi = "10.1016/j.corsci.2018.08.035",

language = "English",

volume = "144",

pages = "44--53",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier",

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TY - JOUR

T1 - Redox potential control in molten salt systems for corrosion mitigation

AU - Zhang, Jinsuo

AU - Forsberg, Charles W.

AU - Simpson, Michael F.

AU - Guo, Shaoqiang

AU - Lam, Stephen T.

AU - Scarlat, Raluca O.

AU - Carotti, Francesco

AU - Chan, Kevin J.

AU - Singh, Preet M.

AU - Doniger, William

AU - Sridharan, Kumar

AU - Keiser, James R.

PY - 2018/11

Y1 - 2018/11

N2 - In a molten salt nuclear reactor system, the redox potential must be controlled for mitigating corrosion of structural materials. The paper presented a critical review on the available knowledge of redox potential control in molten fluoride salt systems. The major phenomena that affect the redox potential and material corrosion are fission, TF production by transmutation, and salt contamination with metal fluorides or other oxidizing impurities. Redox potential control methodologies include gas sparging, contacting the salt with a reducing metal, and adding soluble salt redox buffers to the salt. Redox potential measurement technologies include electrochemical sensors and optical spectroscopy. The paper also analyzed the current technology issues and recommended near future studies.

AB - In a molten salt nuclear reactor system, the redox potential must be controlled for mitigating corrosion of structural materials. The paper presented a critical review on the available knowledge of redox potential control in molten fluoride salt systems. The major phenomena that affect the redox potential and material corrosion are fission, TF production by transmutation, and salt contamination with metal fluorides or other oxidizing impurities. Redox potential control methodologies include gas sparging, contacting the salt with a reducing metal, and adding soluble salt redox buffers to the salt. Redox potential measurement technologies include electrochemical sensors and optical spectroscopy. The paper also analyzed the current technology issues and recommended near future studies.

KW - Corrosion

KW - Molten salt reactor

KW - Redox potential control

UR - http://www.scopus.com/inward/record.url?scp=85053715617&partnerID=8YFLogxK

U2 - 10.1016/j.corsci.2018.08.035

DO - 10.1016/j.corsci.2018.08.035

M3 - Review article

AN - SCOPUS:85053715617

SN - 0010-938X

VL - 144

SP - 44

EP - 53

JO - Corrosion Science

JF - Corrosion Science

ER -

Redox potential control in molten salt systems for corrosion mitigation

Abstract

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Keywords

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