Effect of Metallic Li on the Surface Chemistry of Inconel 625 Exposed to Molten LiCl-Li2O-Li
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Authors
Phillips, William C.
Chidambaram, Dev
Issue Date
2019
Type
Article
Language
en_US
Keywords
Corrosion , High temperature corrosion , Lithium chromate , Pyroprocessing
Alternative Title
Abstract
This study explores the surface chemistry of Inconel 625 samples exposed to molten LiCl-Li2O-Li solutions at 650 degrees C for 500 and 1000hr and aims to understand the effect of solvated Li on corrosion behavior in molten LiCl-Li2O-Li. The surfaces of Inconel 625 samples were analyzed using X-ray diffraction, Raman spectroscopy, and X-ray photoelectron spectroscopy. The oxide films formed on the surface of the samples in the absence of Li is composed of LiCrO2, with small contributions of Li2CrO4 and NiFexCr2-xO4. The presence of Li was observed to destabilize these compounds, resulting in a primarily metallic surface with trace amounts of oxidized Cr, Mo, and Nb present depending on the concentration of Li in solution. (c) The Author(s) 2019. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives 4.0 License (CC BY-NC-ND, http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reuse, distribution, and reproduction in any medium, provided the original work is not changed in any way and is properly cited. For permission for commercial reuse, please email:oa@electrochem.org.
Description
Citation
Phillips, W., & Chidambaram, D. (2019). Effect of Metallic Li on the Surface Chemistry of Inconel 625 Exposed to Molten LiCl-Li2O-Li. Journal of The Electrochemical Society, 166(11), C3193�"C3199. doi:10.1149/2.0231911jes
Publisher
Journal of The Electrochemical Society
License
Attribution-NonCommercial-NoDerivatives 4.0 International
Journal
Volume
Issue
PubMed ID
ISSN
0013-4651