TY - JOUR
T1 - A Semi-Mechanistic Model for Predicting the Service Life of Composite Coatings on VW63Z Magnesium Alloy
AU - Wang, Xiaoxue
AU - Guo, Jingjing
AU - Zeng, Zihao
AU - Zhou, Peng
AU - Wang, Rongqiao
AU - Liu, Xiuchun
AU - Gao, Kai
AU - Sun, Jingli
AU - Yuan, Yong
AU - Wang, Fuhui
N1 - Publisher Copyright:
© The Chinese Society for Metals (CSM) and Springer-Verlag GmbH Germany, part of Springer Nature 2024.
PY - 2024/7
Y1 - 2024/7
N2 - The application of Mg alloys is always accompanied by various coating technology, but a reliable model predicting the service life of coatings on Mg alloys is lacking but urgent. In this work, a semi-mechanistic model was proposed to predict the service life of plasma electrolytic oxidation (PEO) coating/electrophoretic coatings on a VW63Z Mg alloy; the model was decomposed into three parts: a first part depicting the degradation time of organic coating (L1) and the diffusion time of electrolyte in the inorganic coating (L2), respectively; a second part interpreting the breakdown of coatings due to the corrosion process (L3); a final part establishing an algorithm converting the accelerated tests into the real service environment (α); the effect of structural stress and dissimilar metal joints on the service life of coatings was also considered. Based on the ongoing accelerated experiments, the semi-mechanistic model could be able to predict the service life of both PEO coatings and composite coatings on VW63Z Mg alloy with a satisfiable precision.
AB - The application of Mg alloys is always accompanied by various coating technology, but a reliable model predicting the service life of coatings on Mg alloys is lacking but urgent. In this work, a semi-mechanistic model was proposed to predict the service life of plasma electrolytic oxidation (PEO) coating/electrophoretic coatings on a VW63Z Mg alloy; the model was decomposed into three parts: a first part depicting the degradation time of organic coating (L1) and the diffusion time of electrolyte in the inorganic coating (L2), respectively; a second part interpreting the breakdown of coatings due to the corrosion process (L3); a final part establishing an algorithm converting the accelerated tests into the real service environment (α); the effect of structural stress and dissimilar metal joints on the service life of coatings was also considered. Based on the ongoing accelerated experiments, the semi-mechanistic model could be able to predict the service life of both PEO coatings and composite coatings on VW63Z Mg alloy with a satisfiable precision.
KW - Corrosion resistance
KW - Electrophoretic coating
KW - Magnesium alloy
KW - Plasma electrolytic oxidation
KW - Service life prediction
UR - https://www.scopus.com/pages/publications/85191039356
U2 - 10.1007/s40195-024-01698-w
DO - 10.1007/s40195-024-01698-w
M3 - 文章
AN - SCOPUS:85191039356
SN - 1006-7191
VL - 37
SP - 1161
EP - 1176
JO - Acta Metallurgica Sinica (English Letters)
JF - Acta Metallurgica Sinica (English Letters)
IS - 7
ER -