Self-assembled monolayers formed on AZ31 Mg alloy

Self-assembled monolayer (SAM) was successfully adsorbed on the AZ31 Mg alloy surface using oleic acid and stearic acid with various organic solvents, such as acetone, ethanol, and hexane. The surface monolayers were characterized using contact angle measurements, X-ray photoelectron spectroscopy (XPS) and anodic polarization test. It was shown that the higher contact angle and the best anti-corrosion property were obtained with treatment in oleic acid with ethanol solution.

► Self-assembled monolayer is successfully prepared on AZ31 Mg alloy.
► Treatment was performed in oleic acid and stearic acid.
► The higher contact angle and best anti-corrosion property were obtained.
► Oleic acid with ethanol solvent was the best solution.