Polarization Phenomena during Zn–Ni–Fe Alloy Electrodeposition in Acidic Chloride Bath

Effect of graphene addition on composition, morphology and corrosion behavior of ZnNiFe-graphene composite coatings

“…Hence, Zn alloy coatings, particularly Zn-Ni and Zn-Fe coatings are largely used for enhanced anti-corrosive performance and high mechanical strength [2][3][4]. It has been also shown that co-deposition of Fe with Zn-Ni alloy to form ZnNiFe co-deposit further enhances the corrosion resistance, mechanical strength and coating surface uniformity [5][6][7].…”

“…In the case of Zn alloy electrodeposition, Zn (even though possessing lower reduction potential) deposits predominantly when compared to other relatively nobler elements like Ni and Fe. This phenomenon is termed as anomalous co-deposition [5][6][7][8][9]. The anomalous co-deposition is typically observed while co-depositing Fe group elements along with Zn.…”

“…The anomalous co-deposition is typically observed while co-depositing Fe group elements along with Zn. Several researchers have studied the anomalous deposition behavior and proposed mechanisms such as the hydroxide suppression mechanism (HSM) and underpotential deposition (UPD) of the less noble ions [5][6][7][8][9].…”