Artequick as Inhibitor of ASTM A36 Mild Steel Corrosion through Anodic Sites Dissolution: Computational and Electrochemical Approach

Abstract

ATK was investigated to ascertain its IE(%) on ASTM A36 MS corrosion in a HCl medium. This was possible through the use of WL, Td, Tm, PDP, EIS and SEM techniques. It was seen from all experimental results that, through adsorption onto the MS surface, ATK mitigated active corrosion sites. CR was seen to decrease with higher inhibitor Ct from 197.6 to 19.3 mg/hr -1 /cm 2 . IE(%) of ATK, which rose from 50 to 90.2%, with corresponding increased Ct, from 150 to 750 ppm, was better by adding PPQ to it than ATS. An increase in Rct, up from 346 to 1153 /cm 2 , and a decrease in icorr, from 312.2 to 64.4 mA, were seen, with higher Ct of ATK, which indicated reduced anodic dissolution and better CI. A mixed type inhibition was deduced from Tafel slopes of PDP results. A physical adsorption mechanism was proposed, while, in Td terms, ATK exhibited a stable and spontaneous reaction.