Novel fabrication of a hierarchical structured surface with improved corrosion inhibition by using hydrothermal synthesis and ultraprecision machining

Abstract

Hydrophobic surfaces are effective on corrosion resistance as the contact with corrosive medium is reduced. In this study, a novel route integrating hydrothermal synthesis with ultraprecision machining (UPM) is reported to prepare a hierarchical cuprous oxide-stearic acid (Cu2O-STA) copper surface. Electrochemical methods were utilized to characterize the corrosion resistance performance. The results indicated that Cu2O-STA surfaces showed good corrosion resistance properties. The enhancement on the properties achieved via introducing UPM fabricated microgrooves was also revealed, by comparing the electrochemical behaviors of Cu2O-STA modified flat samples with the hierarchical surfaces based on Cu2O-STA modified microgrooves.