TITLE:
Co Complexes as a Corrosion Inhibitor for 316 L Stainless Steel in H2SO4 Solution
AUTHORS:
Amin Rabiei Baboukani, Ehsan Sharifi, Saeid Akhavan, Ahmad Saatchi
KEYWORDS:
Corrosion Inhibitors, Co Complex, 316 L Stainless Steel, Polarization, EIS
JOURNAL NAME:
Journal of Materials Science and Chemical Engineering,
Vol.4 No.9,
September
7,
2016
ABSTRACT: The effect of Co complexes with a Schiff base ligand on the electrochemical corrosion behavior of 316 L SS in 0.1 M H2SO4 at 25℃ has been investigated at various inhibitor concentration using electrochemical techniques (impedance spectroscopy (EIS), polarization curves). Corrosion measurements indicate that Co complex act as moderately inhibitors. Results revealed that increasing the concentration of Co complex increases the corresponding IE% values till 100 ppm. Co complex acts as mixed type inhibitors with predominant effect on the anodic dissolution of iron. Adsorption studies showed that the process follows Langmuir adsorption isotherm.