Inhibition of the corrosion of mild steel in the pulp and paper industry

Abstract

The equipment used in pulp and paper industry is mostly made of mild steel. Sulphuric acid used during manufacturing of paper in different operations makes the environment corrosive leading to several types of corrosion like galvanic, pitting, stress, cracking, embitterment, blistering etc. To check such types of corrosion organic inhibitors are taken like cyclohexamethylenediamin and cyclohexamethylenediamineN, Ndimethyldiamine. The corrosion rate is studied at different concentrations and temperatures. Gravimetric (Weight loss Experiment) and potentiostatic polarization equipments are applied for experimental work. The above mentioned inhibitors exhibited good inhibition efficiency and surface coverage area at low and high temperatures.