Poly(aniline-formaldehyde): A new and effective corrosion inhibitor for mild steel in hydrochloric acid
By Quraishi, M.A. & Shukla, Sudhish Kumar
Published in Materials Chemistry and Physics
NULL
2009
Abstract
In recent years, polyanilines have emerged as efficient class of corrosion inhibitors for mild steel in acidic media. The corrosion inhibition of poly(aniline-formaldehyde) on mild steel in 1.0N HCl has been evaluated by potentiodynamic polarization, linear polarization, electrochemical impedance spectroscopy and weight loss measurements. Results obtained show that poly(aniline-formaldehyde) is a mixed inhibitor and it inhibits mild steel corrosion through adsorption mechanism. It showed >90% inhibition efficiency at 10 ppm. AFM clearly reveals that surface roughness of inhibited mild steel sample is less than uninhibited mild steel.
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