Electrochemical studies on corrosion of stainless steel electrode: III Inhibition of pitting corrosion

ABSTRACT

The inhibition of corrosion of 18-8 Cr-Ni stainless steel by quaternary ammonium salts been investigated in de-erated 0.1N-KGl solution at different pH values. The electrochemical studies employed is the cyclic polarization measurements at a scan rate of 0.025 V/min. over the potential range -1.5 V to +1.5 V. The percentage inhibition efficiency is found to decrease according to the type of quaternary ammonium compounds, tetramethyl > tetraethyl > tetrabutyl ammonium chlorides