The Effects of Pulsed Current Parameters on Porosity of Copper Prepared by Jet Electrodeposition

摘要

Surface texturing has become an increasingly prevalent approach to improve the tribological propertiesof materials. The present work aims to study a novel texturing technology. A copper coating with aporous surface structure was directly prepared on stainless steel using a copper sulfate solution bath viahigh-speed jet electrodeposition. A fine, uniform honeycomb structure with micron sized pores can beachieved using a pulsed current. The duty cycle, current density and current frequency of the pulsedcurrent have a notable influence on the microstructure of the deposited surface. Decreasing the dutycycle and increasing the current density can help to achieve a homogeneous and fine porous surface. Themechanism for depositing a porous surface was discussed according to the roles of the current parametersin the formation of the coating microstructure.