Material Selection and Corrosion Studies of Candidate Bearing Materials for Use in Molten Chloride Salt

James R. Keiser; Xin He; Dino Sulejmanovic; Jun Qu; Kevin R. Robb; Keith Oldinski

doi:10.1115/1.4054507

Material Selection and Corrosion Studies of Candidate Bearing Materials for Use in Molten Chloride Salt

James R. Keiser, Xin He, Dino Sulejmanovic, Jun Qu, Kevin R. Robb, Keith Oldinski

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

5 Scopus citations

Abstract

Molten chloride salts are being given strong consideration for use in heat transfer and storage in concentrating solar power (CSP) systems as well as in some nuclear reactor applications. Containment of the molten salt, particularly at the highest temperatures, is a major material concern and has received considerable study. Another material issue is the pumps that will be required to move the molten salt along with the bearing materials that will be required to have sufficient corrosion resistance as well as wear resistance in the high temperature salt. A pair of coordinated studies in our laboratory has addressed the corrosion, and the wear issues of candidate bearing materials including the selection of candidate materials as well as their performance in a molten sodium chloride-potassium chloride-magnesium chloride salt environment. This article addresses the selection of candidate materials and their chemical compatibility with the molten salt. The studies have identified material pairs that have suitable properties for use as bearings that would be immersed in molten chloride salt.

Original language	English
Article number	021001
Journal	Journal of Solar Energy Engineering, Transactions of the ASME
Volume	145
Issue number	2
DOIs	https://doi.org/10.1115/1.4054507
State	Published - Apr 1 2023

Funding

We acknowledge the efforts of Adam Willoughby in preparation for and operation of the capsule corrosion studies, Tyson Jordan for metallographic examination of the samples and Tracie Lowe for the SEM-EDS examination of the samples. This research was supported by the U.S. Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE) under Solar Energy Technologies Office (SETO) Agreement Number 34328 and under contract DE-AC05-00OR22725 with Oak Ridge National Laboratory, managed by UT-Battelle, LLC. The DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan.2

Funders	Funder number
U.S. Department of Energy
Office of Energy Efficiency and Renewable Energy
Oak Ridge National Laboratory
Solar Energy Technologies Office	DE-AC05-00OR22725, 34328
UT-Battelle

Keywords

bearing materials
chloride salts
concentrating solar power
corrosion

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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abstract = "Molten chloride salts are being given strong consideration for use in heat transfer and storage in concentrating solar power (CSP) systems as well as in some nuclear reactor applications. Containment of the molten salt, particularly at the highest temperatures, is a major material concern and has received considerable study. Another material issue is the pumps that will be required to move the molten salt along with the bearing materials that will be required to have sufficient corrosion resistance as well as wear resistance in the high temperature salt. A pair of coordinated studies in our laboratory has addressed the corrosion, and the wear issues of candidate bearing materials including the selection of candidate materials as well as their performance in a molten sodium chloride-potassium chloride-magnesium chloride salt environment. This article addresses the selection of candidate materials and their chemical compatibility with the molten salt. The studies have identified material pairs that have suitable properties for use as bearings that would be immersed in molten chloride salt.",

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AU - Robb, Kevin R.

AU - Oldinski, Keith

PY - 2023/4/1

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AB - Molten chloride salts are being given strong consideration for use in heat transfer and storage in concentrating solar power (CSP) systems as well as in some nuclear reactor applications. Containment of the molten salt, particularly at the highest temperatures, is a major material concern and has received considerable study. Another material issue is the pumps that will be required to move the molten salt along with the bearing materials that will be required to have sufficient corrosion resistance as well as wear resistance in the high temperature salt. A pair of coordinated studies in our laboratory has addressed the corrosion, and the wear issues of candidate bearing materials including the selection of candidate materials as well as their performance in a molten sodium chloride-potassium chloride-magnesium chloride salt environment. This article addresses the selection of candidate materials and their chemical compatibility with the molten salt. The studies have identified material pairs that have suitable properties for use as bearings that would be immersed in molten chloride salt.

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Material Selection and Corrosion Studies of Candidate Bearing Materials for Use in Molten Chloride Salt

Abstract

Funding

Keywords

UN SDGs

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