Adsorption and inhibition effect of 2,4-diamino-6-hydroxypyrimidine for mild steel corrosion in HCl medium: experimental and theoretical investigation, Ionics
Yükleniyor...
Tarih
2019
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Ionics
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
2,4-Diamino-6-hydroxypyrimidine (2D6H) was examined as corrosion inhibitor of mild steel (MS) in 0.1 M HCl using potentiodynamic
measurements, linear polarization resistance (LPR), scanning electron microscopy, electrochemical experiments, and
quantum chemical calculations. All measurements show that the corrosion inhibition effectiveness is forthright compared to the
concentration of 2D6H ranging from 0.5 to 10.0 mM. Adsorption of 2D6H on the MS surface in the presence of HCl is
determined to obey Langmuir adsorption isotherm. The electronic features elucidated by quantum chemical calculations were
associated with the experimental inhibition productivities. The mechanism of inhibition was revealed by Epzc measurements.
Açıklama
Anahtar Kelimeler
Interfaces . Electrochemical techniques . Quantumchemical calculation . Potential of zero charge . Adsorption
