在线提供 29 June 2022
Abstract
This
research was undertaken to study the effect of Zr-enhanced plasma
electrolytic oxidation (PEO) as a pretreatment on the corrosion
performance of epoxy coating applied on Magnesium in 3.5 wt% NaCl
solution. The parameters of delamination index along with coating damage
index were extracted through electrochemical impedance spectroscopy
(EIS) tests to determine how Zr may affect the corrosion protection of
duplex PEO/epoxy coated samples. Pull-off adhesion tests were also
accomplished to form a better understanding of Zr-enhanced PEO coating’
function. According to the obtained results, the presence of Zr can
reduce the damage to the coating system by almost twice.
Keywords
Magnesium; EIS; Pretreatment; PEO; Epoxy; Zirconyl nitrate
