Premium
Evaluation of Curam drug as an ecofriendly corrosion inhibitor for protection of stainless steel‐304 in hydrochloric acid solution: Chemical, electrochemical, and surface morphology studies
Author(s) -
ElHaddad Mahmoud N.,
Fouda Abd ElAziz S.
Publication year - 2021
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.202000409
Subject(s) - hydrochloric acid , chemistry , dielectric spectroscopy , corrosion , adsorption , electrochemistry , dissolution , corrosion inhibitor , langmuir adsorption model , fourier transform infrared spectroscopy , nuclear chemistry , polarization (electrochemistry) , atomic force microscopy , chemical engineering , analytical chemistry (journal) , metallurgy , inorganic chemistry , materials science , nanotechnology , chromatography , electrode , organic chemistry , engineering
In the present work, the Curam drug was used as an eco‐friendly corrosion inhibitor for the protection of stainless steel 304 (SS‐304) in 2.0 M HCl solution. The inhibition efficiency was determined by mass loss (ML), Potentiodynamic polarization (PDP), and electrochemical impedance spectroscopy (EIS) measurements. The surface morphology analysis carried out using Fourier transform infrared spectroscopy (FT‐IR) and atomic force microscopy (AFM). ML data prove that with an increase in the temperature, Curam still exhibits good anti‐corrosion performance. The inhibition efficiency of Curam can still be maintained at about 72% at 318 K. The data of electrochemical measurements indicate that Curam is the mixed‐type inhibitor. The adsorption process of Curam on the SS‐304 surface obeys the Langmuir adsorption isotherm. FT‐IR and AFM analysis showed the excellent inhibition performance of Curam for SS‐304 dissolution in an acidic medium. The data obtained by chemical and electrochemical measurements are in good agreement with one another.