Pulse Electroplating of Ultra-Fine Grained Zinc Coating on 316L Stainless Steel and its Corrosion Behaviour

Abstract

Pulse electrodeposition (PED) was used to produce nanocrystalline zinc film from zinc sulphate electrolyte. Differences reductive/oxide voltage were employed to study the grain size and surface morphology of these ultra-fine zinc coating with SEM. Also pulse times were discussed for the same electricity. The corrosion behaviour of these as formed zinc coating are investigated by potentiodynamic polarization. The different corrosion resistances of SS316L under different applied voltages and pulse time conditions are summarized, providing a foundation for further consideration of electroplating zinc.

Corrosion Protection of Injection Molded Porous 440C Stainless Steel by Electroplated Zinc Coating

“…For instance, the corrosion resistance of austenitic 316L stainless steel was improved with a Nb-coating by physical vapor deposition (PVD) [15] or by using anticorrosive polypyrrole films by Coatings 2021, 11, 949 2 of 11 electrodeposition [16]. Common alternatives such as galvanization or zinc-plating are also widely used to protect iron and steel from corrosion, which can also be applied on stainless steel [17]. Two common galvanization methods are hot-dip galvanization, which involves immersing the steel part in molten zinc [18], and electrogalvanization, which utilizes electrolysis to coat the sample material with zinc [19].…”

“…It has also been studied for protecting stainless steel. For example, electrolytic baths containing ZnSO 4 have been used to electrochemically coat 316L and 316 stainless steel grades [17,22].…”