Anticorrosion mechanisms of press hardened aluminized steel in
dissimilar assemblies
From the analysis of the polarization curves it can be supposed that
in the case of coupled systems with GI, Zn is expected to be sacrificial
and cathodically protect Usibor® AlSi until its full consumption from
the steel substrate. At the same time, according to the AESEC results,
Al can dissolve at cathodic areas. This could result in Al ion accumulation
in confined zone which can be speculated to enhance the corrosion protection
by the formation of layered double hydroxides (as suggested for