Synthesis and evaluation of the inhibitor effect of a new class of triazole compounds

In this work, a new class of triazole molecules, containing heteroatoms suc h as nitrogen and sulphur, is prepared. The effect of these molecules on th e corrosion behaviour of iron was investigated. Electrochemical studies wer e performed in aerated chloride acid solution (1 M) by potentiodynamic pola risation curves. Surfaces were characterised by scanning electron microscop y. The recorded electrochemical data showed that the corrosion resistance was greatly enhanced in the presence of inhibitor. The maximal protection effic iency exceeded 94%. The corrosion protection could be explained by the adso rption of inhibitor through the S- or N-atom and formation of a protective layer attached to the metal surface. (C) 2000 Published by Elsevier Science S.A.