Inhibition of mild steel corrosion in sulphuric acid using indigo dye and synergistic halide additives

198Citations
Citations of this article
30Readers
Mendeley users who have this article in their library.

You may have access to this PDF.

Abstract

Gravimetric method was used to study the inhibitory properties of indigo dye during corrosion of mild steel in aerated sulphuric acid solutions at 30-50°C. The effect of addition of halide salts KCl, KBr and KI was also investigated. The corrosion rates in all systems studied increased with rise in temperature. The inhibition efficiency of indigo dye increased with concentration and synergistically increased on addition of halide salts. Temperature studies revealed increased inhibition efficiency at higher temperatures, which is suggestive of chemisorption mechanism. The inhibitor adsorption characteristics were approximated by Frumkins isotherm and Flory-Huggins isotherm. Activation energy for Fe dissolution in sulphuric acid was observed to reduce from 54.6kJmol-1 in the uninhibited system to 34.9kJmol-1 in the inhibited system. © 2003 Published by Elsevier B.V.

Cite

CITATION STYLE

APA

Oguzie, E. E., Unaegbu, C., Ogukwe, C. N., Okolue, B. N., & Onuchukwu, A. I. (2004). Inhibition of mild steel corrosion in sulphuric acid using indigo dye and synergistic halide additives. Materials Chemistry and Physics, 84(2–3), 363–368. https://doi.org/10.1016/j.matchemphys.2003.11.027

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free