In-situ observation on filiform corrosion propagation and its dependence on Zr distribution in Mg alloy WE43

Exploring mechanism of corrosion inhibition of WE43 and AZ31 alloys by aqueous molybdate in Hank’s solution by multisine impedimetric monitoring

“…The cathodic activity of IMPs in the microstructure of the AZ31 and WE43 alloys [28,63] and the presence of Clions in Hank's solution result in the occurrence of pitting corrosion [22,28,63]. In the case of the WE43 alloy, the corrosion process has an additional step in the form of filiform corrosion, which initiates on the surface regions of cathodic IMPs [28,64,65].…”