Abstract
A unique corrosion barrier layer, formed by thermal CO2 treatment with LiNO3 on AZ91D, was characterized to reveal the chemical species and their spatial distribution using the combination of scanning transmission electron microscopy (STEM), energy dispersive spectroscopy (EDS), and electron energy loss spectroscopy (EELS) techniques. Two distinct and spatially segregated phases were identified as Li compound(s) with MgCO3 and MgO in the surface barrier layer. Based on the characterization results, it is presumed that the reaction of Mg oxide/hydroxide with LiNO3 and CO2 occurred preferentially in some local areas where Li compound(s) with MgCO3 were present, but the unreacted areas contained MgO in the surface barrier layer.
| Original language | English |
|---|---|
| Article number | 111015 |
| Pages (from-to) | 2735-2742 |
| Number of pages | 8 |
| Journal | JOM |
| Volume | 77 |
| Issue number | 5 |
| DOIs | |
| State | Published - May 2025 |
Funding
This work was supported by the US Department of Energy, Office of Energy Efficiency & Renewable Energy (EERE) Vehicle Technology Office (VTO). The Talos was supported by the US Department of Energy, Office of Nuclear Energy, Fuel Cycle R&D Program, and the Nuclear Science User Facilities. Q.Q. Ren and Holden Hyer at ORNL provided their scientific and technical review that improved the contents of this manuscript. This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).