SYNTHESIS OF SOME SCHIFF BASES AND THEIR EVALUATION AS CORROSION INHIBITORS OF CARBON STEEL

Abstract

Corrosion of steel represents a phenomenon of negative impact economically and environmentally, since steel is widely used in concrete constructions and various industrial applications such as chemical manufacturing and oil refines industries. In the last decades, there was an increasing concern in the use of some classes of organic compounds especially oxygen, sulphur and nitrogen containing heterocyclic as corrosion inhibitors. It is believed that the function of these inhibitors is to be adsorbed on the metal surface. One of the most widely used families of organic compounds is Schiff bases and their chemistry is essential material in many organic chemistry textbooks. The Schiff bases inhibitors have many advantages such as high inhibition efficiency, low price, low toxicity, and easy production. The aim of the present study is to prepare some Schiff bases and then study their behavior as corrosion inhibitors of carbon steel in 1M hydrochloric acid. This work includes three main parts: