Research of Self-assembled Monolayer of Alkanethiol for Corrosion Protection of Brass

Abstract

Self-assembled monolayers (SAMs) of alkanethiol have been fabricated on an anodized surface of brass. The inhibition behavior of SAMs of alkanethiol on brass in seawater had been investigated by electrochemical impedance spectroscopy (EIS) and polarization measurements. The results indicated that the pretreatment of anodizing on the surface of brass played a vital role in preparing of SAMs film. The anti-corrosion property of brass in seawater has been greatly improved by SAMs of alkanethiol. The inhibition efficiency is as high as 99.4% when the concentration of assemble solution was 10 mmol/L and the corresponding time was 4 h. The results have been discussed in terms of the structure of SAMs film and its performance of protection for brass in seawater.