Inhibition performance of 2-(Dibutylamino)-4,6-Dimercapto- 1,3,5-Triazine self-assembled film for copper corrosion in 3.5 wt% NaCl solutions

Abstract

The printed circuit board (PCB) acts as a carrier for various components to achieve interconnection and interconnection with each other. Therefore, the protection of copper on the surface of PCB is very important. It is of great practical significance to quest the approach to reduce the corrosion of copper in the chloride ion environment. The film of 2-(Dibutylamino)-4,6-Dimercapto-1,3,5-Triazine(MSDS) fabricated by self-assembly on a copper surface can prevent copper corrosion in a 3.5% NaCl solution. Electrochemical testing, morphological characterization and theoretical calculations were used to study its inhibition mechanism and performance. The results display that MSDS modified copper has better corrosion inhibition performance than 2,4,6-trimercapto-1,3,5-triazine (TMTA) modified copper in 3.5% NaCl solution, and the corrosion resistance of MSDS SAMs reaches 97.91%,this shows that MSDS has more excellent corrosion resistance in triazines.