Fabrication, Characterization, and Corrosion Protection of Siloxane Coating on an Oxygen Plasma Pre-treated Silver-Copper Alloy

Abstract In this study, siloxane has been used for the protection of metal artifacts from corrosion in form transparent barrier coating films because their good adhesion to substrate. The effect oxygen plasma pre-treatment on properties thin film silver-copper alloy substrate was investigated. Radiofrequency plasma-enhanced chemical vapor deposition (RF-PECVD) process. Surface identification and characterization deposited were carried out using Scanning Electron Microscopy coupled with energy-dispersive x-ray spectroscopy (SEM–EDX) Fourier-transform infrared (FT-IR). topography roughness investigated by atomic force microscopy (AFM). hydrophobic characteristic measured water contact angle measurement (WCA). thickness evaluated a spectroscopic ellipsometer (SE). Colorimetric (CM) evaluate changes appearance surface following PECVD SiO 2 protective layer. ability substrates as function RF power gas feed composition examined electrochemical impedance (EIS) technique. It found that improved efficiency samples 55.29 92.93%. Besides, after pretreatment step, showed better resistance tested samples.