Surface Grain Size Effects on the Corrosion of Magnesium
In many cases degradation of a material initiates at its surface, including wear, corrosion, fretting, etc. Such deterioration / failure modes are hence surface properties sensitive. This study is one discrete effort towards the optimization of the surface microstructure for specific properties by understanding the fundamentally unknown ‘corrosion – grain size relationship’ for magnesium. There is a special need to understand this relationship as we outline in some detail within this study. Results showed that there was a significant variation in corrosion resistance with grain size, which is a key finding; however these trends were also strongly dependent upon the specific thermomechanical processing used to prepare the specimens.
Nahed El Mahallawy and Mingxing Zhang
C. op’t Hoog et al., "Surface Grain Size Effects on the Corrosion of Magnesium", Key Engineering Materials, Vol. 384, pp. 229-240, 2008