Corrosion inhibition of mild steel by Schiff base compounds in various aqueous solutions: Part 1

The corrosion inhibition by Schiff base compounds derived from diamines and o-hydroxy, o-methoxy aromatic aldehydes was investigated by weight loss, e lectrochemical measurements and surface analysis of SS 400 in various aqueo us solutions such as tap water (LC), concentrated tap water (I-IC) and HCl solutions. The maximum inhibition efficiency (eta) of N,N'-bis(salicylaldeh yde)-1,12-diaminododecane (Sardn) for SS 400 in HCl solution approached 93% . The adsorption of Saldn on mild steel in HCl solution was obeyed Langmuir 's isotherm. (C) 1998 Published by Elsevier Science Ltd. All rights reserve d.