Inhibition effect ofCynara cardunculusleaf extract on corrosion of St37 steel immersed in seawater with and without bleach solution
Yükleniyor...
Dosyalar
Tarih
2021
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Taylor & Francis Inc
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The inhibition performance of an aqueous extract ofCynara cardunculusleaves on the corrosion of St37 steel immersed in seawater and seawater with bleach was investigated using weight loss measurements, electrochemical methods, and surface characterization techniques. It was found that the extract components acted primarily as a mixed-type inhibitor, and inhibition efficiency increased with increasing inhibitor concentration. Electrochemical impedance spectroscopy (EIS) and dynamic electrochemical impedance spectroscopy (DEIS) confirmed the formation of a protective layer on the metallic surface in both solutions. The adsorption of inhibiting molecules conformed to the Langmuir isotherm model. The thermodynamic parameter values indicated that chemisorption constituted the major contribution to the adsorption process. This result was corroborated by scanning electron microscopy (SEM) and energy-dispersive X-ray (EDX) analyses. The significant inhibition effect can be related to the large amount of phenolic compounds in the CC aqueous extract as revealed by the Fourier-transform infrared (FTIR) spectrum.
Açıklama
Anahtar Kelimeler
Bleach, orrosion, Cynara cardunculus leaf extract, Seawater, St37 steel, Electrochemical Impedance Spectroscopy, Hydrochloric-Acid Solution, 1 M Hcl, Carbon-Steel, Mild-Steel, Nanoparticles Composite, Chloride Solutions, Pitting Corrosion, Stainless-Steels, Leaves Extract
Kaynak
Chemical Engineering Communications
WoS Q DeÄŸeri
Q3
Scopus Q DeÄŸeri
Q2
Cilt
208
Sayı
9
