| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1469586 | Corrosion Science | 2012 | 7 Pages |
Dual-phase steel was electroplated with Fe prior to reduction annealing to improve surface quality and corrosion characteristics after galvannealing. This pre-electroplating process caused remarkable reduction in surface cracks and induced δ-phase formation over the surface of the galvannealed coating. Moreover, the degree of Fe–Zn alloying significantly increased, resulting in a thicker coating. Consequently, the corrosion potential increased and corrosion current decreased in the highly polarized anodic reaction. Further, spontaneous passivation occurred, resulting in a very low corrosion rate.
► Galvannealed steel pre-electroplated with Fe. ► Fe pre-electroplating on dual-phase steel for the suppression of oxide formation during reduction annealing. ► Fe pre-electroplating remarkably reduced in surface defects and improved homogeneity of the galvannealed coating. ► Degree of Fe–Zn alloying increased, resulting in a thicker coating. ► Corrosion resistance increased and, further, spontaneous passivation occurred.
