TY - JOUR
T1 - Investigation of Chemical Species in the Corrosion Barrier Layer on Thermal CO2 Treated AZ91D Magnesium Alloy with Lithium Nitrate
AU - Su, Yi Feng
AU - Jang, Gyoung Gug
AU - Wade, John E.
AU - Jun, Jiheon
N1 - Publisher Copyright:
© The Minerals, Metals & Materials Society 2024.
PY - 2024
Y1 - 2024
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85205511855&partnerID=8YFLogxK
U2 - 10.1007/s11837-024-06890-y
DO - 10.1007/s11837-024-06890-y
M3 - Article
AN - SCOPUS:85205511855
SN - 1047-4838
JO - JOM
JF - JOM
ER -