Studies on the Effect of a Newly Synthesized Schiff Base Compound on the Corrosion of Copper in 3% NaCl Solution

摘要

A new Schiff base derivative, N,N-dimethy-4-((E)-4-((E)-(4-methoxybenzylidene) amino) styryl)aniline (DSA), was used as an inhibitor for copper corrosion in 3% NaCl solution. Its inhibitingperformance was evaluated by a series of techniques including weight loss, electrochemicalmeasurements, scanning electronic microscope (SEM), and theoretical calculations. Results show thatthe high inhibition efficiency for copper corrosion was successfully achieved jus8t with a smallamount of DSA. The DSA adsorption on copper surface obeys Langmuir adsorption isotherm.Furthermore, theoretical calculations give insightful explanations of the mechanism of DSA inhibition.