surfactants

magnesium

knockdown

corrosion_68592

corrosion behavior

conversion coating

stir processing

supercurrent

highbush

friction stir processing

ldhs

corrosion_97313

urbanization_137853

non-woven

transitional justice_63005

user authentication

self-avoiding

behavior magnesium

corrosion_103465

formula see text_117340

Corrosion Science

Friction stir processing (FSP) is applied to modify the surface microstructure of cast AZ91 magnesium alloy. The electrochemical and hydrogen evolution measurements reveal that the corrosion rate of processed alloy in 3.5 wt% NaCl solution is significantly decreased. This is mainly attributed to the alteration of corrosion process induced by modification on the morphology and distribution of β-Mg 17 Al 12 phase via FSP. It is originally reported that the formation of a compact and continuous β phase layer on the FSPed surface owing to the segregation of fine β phase effectively enhances the stability and passivity of corrosion product film.

Enhanced corrosion resistance of AZ91 magnesium alloy through refinement and homogenization of surface microstructure by friction stir processing