Corrosion inhibition of tetrabutylphosphonium benzotriazolate on carbon steel in acidic medium
Year: 2024
Type: article
Abstract: The inhibition effect of tetrabutylphosphonium benzotriazolate (TBPB) on carbon steel in a 1 mol·L −1 HCl solution was investigated using a combination of analytical techniques, including polarization curve, electrochemical impedance spectroscopy , scanning electron microscopy, atomic force microscopy , and X-ray photoelectron spectroscopy. The study revealed that TBPB acts as a mixed corrosion inhibitor for carbon steel in acidic conditions. The efficiency of corrosion inhibition was observed to increase gradually with rising TBPB concentrations, reaching a maximum of 92 % at a concentration of 10 mmol·L −1 . This enhancement in corrosion inhibition efficiency is attributed to the adsorption of TBPB on the metal surface , effectively isolating it from the corrosive medium and thereby preventing corrosion reactions. Importantly, this mechanism aligns well with the Langmuir isothermal adsorption model.
Authors: Xi Huang, Haojun Jiang, Kun Cao, Wenheng Huang, Jiachun Liu, Binyue Liu, Hong Wang
Institution: Neijiang Normal University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,100
Awards: G3515008082, G6769891901
OpenAlex ID: W4403155115