Organic Compounds as Effective Inhibitors for Hydrogen Permeation of Type 1010 Steel

Abstract

Hydrogen permeation and corrosion inhibition characteristics of several organic compounds were studied on a type 1010 (UNS G10100) steel membrane in 0.5 M hydrochloric acid (HCl). Tafel extrapolation and linear polarization methods were used to estimate the corrosion rate, while the Devanathan-Stachurski technique was used to determine the hydrogen permeation rate. A simple corrosion model was used to correlate inhibitor concentration to its inhibiting efficiency. Maximum corrosion reduction and hydrogen permeation inhibiting efficiencies were measured as 82% and 98%, respectively.