Activity gradient driven mass transport in molten fluoride salt medium

Falconer, Cody; Elbakhshwan, Mohamed; Doniger, William; Weinstein, Matthew; Sridharan, Kumar; Couet, Adrien

doi:10.1038/s41529-022-00239-z

Activity gradient driven mass transport in molten fluoride salt medium

Journal Article · Tue Apr 19 00:00:00 EDT 2022 · npj Materials Degradation

DOI:https://doi.org/10.1038/s41529-022-00239-z· OSTI ID:1863629

; Elbakhshwan, Mohamed; Doniger, William; Weinstein, Matthew; Sridharan, Kumar;

Abstract

The molten salt-cooled reactor concept has garnered significant interest and one of the current challenges limiting the deployment of these reactor concepts is the complex corrosion phenomenon observed in molten salt environments. One of these phenomena is activity gradient mass transport, which has been shown to affect dissimilar materials submerged in the same salt medium even when best efforts have been made to electrically isolate dissimilar materials from one another. This mechanism while shown experimentally, has not been predictively studied through a modeling approach. In this study, activity gradients in several 316L-X materials systems have been modeled and the mass transport predicted by the model has been confirmed through static isothermal corrosion testing in a molten fluoride salt medium.

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Research Organization:: Texas A & M University, College Station, TX (United States); University of Wisconsin, Madison, WI (United States)

Sponsoring Organization:: National Science Foundation (NSF); USDOE; USDOE Office of Nuclear Energy (NE); USDOE Office of Nuclear Energy (NE), Nuclear Energy University Program (NEUP)

Grant/Contract Number:: NE0008651; NE0008802; NE0008803

OSTI ID:: 1863629

Alternate ID(s):: OSTI ID: 1978606

Journal Information:: npj Materials Degradation, Journal Name: npj Materials Degradation Journal Issue: 1 Vol. 6; ISSN 2397-2106

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United Kingdom

Language:: English

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