Synthesis and characterization of a novel eco-friendly corrosion inhibition for mild steel in 1 M hydrochloric acid

Ahmed A. Al-Amiery, Fatin A. Binti Kassim, Abdul Amir H. Kadhum, Abu Bakar Mohamad

Research output: Contribution to journalArticle

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Abstract

The acid corrosion inhibition process of mild steel in 1 M HCl by azelaic acid dihydrazide has been investigated using electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, open circuit potential (OCP) and electrochemical frequency modulation (EFM). Azelaic acid dihydrazide was synthesized, and its chemical structure was elucidated and confirmed using spectroscopic techniques (infrared, nuclear magnetic resonance and mass spectroscopy). Potentiodynamic polarization studies indicate that azelaic acid dihydrazide is a mixed-type inhibitor. The inhibition efficiency increases with increased inhibitor concentration and reaches its maximum of 93% at 5 × 10-3 M. The adsorption of the inhibitor on a mild steel surface obeys Langmuir's adsorption isotherm. The effect of temperature on corrosion behavior in the presence of 5 × 10-3 M inhibitor was studied in the temperature range of 30-60 °C. The results indicated that inhibition efficiencies were enhanced with an increase in concentration of inhibitor and decreased with a rise in temperature. To inspect the surface morphology of inhibitor film on the mild steel surface, scanning electron microscopy (SEM) was used before and after immersion in 1.0 M HCl.

Original languageEnglish
Article number19890
JournalScientific Reports
Volume6
DOIs
Publication statusPublished - 22 Jan 2016

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Hydrochloric Acid
Carbon steel
Potentiodynamic polarization
Corrosion
Frequency modulation
Electrochemical impedance spectroscopy
Adsorption isotherms
Temperature
Surface morphology
Nuclear magnetic resonance
Spectroscopy
Infrared radiation
Adsorption
Scanning electron microscopy
Acids
Networks (circuits)
azelaic acid

ASJC Scopus subject areas

  • General

Cite this

Synthesis and characterization of a novel eco-friendly corrosion inhibition for mild steel in 1 M hydrochloric acid. / Al-Amiery, Ahmed A.; Binti Kassim, Fatin A.; Kadhum, Abdul Amir H.; Mohamad, Abu Bakar.

In: Scientific Reports, Vol. 6, 19890, 22.01.2016.

Research output: Contribution to journalArticle

Al-Amiery, Ahmed A. ; Binti Kassim, Fatin A. ; Kadhum, Abdul Amir H. ; Mohamad, Abu Bakar. / Synthesis and characterization of a novel eco-friendly corrosion inhibition for mild steel in 1 M hydrochloric acid. In: Scientific Reports. 2016 ; Vol. 6.
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