Galvanic Corrosion of Steel–Brass Couple in Petroleum Waste Water in Presence of a Green Corrosion Inhibitor: Electrochemical, Kinetics, and Mathematical View

Anees A. Khadom, Baker M. Abod, Hameed B. Mahood, Abdul Amir H. Kadhum

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Control of galvanic corrosion of steel–brass couples in petroleum waste water solution by Curcuma longa was studied at different temperatures, inhibitor concentrations, and velocities using the electrochemical polarization technique. Inhibition efficiency was increased with the increase in inhibitor concentration and decreased with both rises in temperature and solution velocity. Maximum inhibitor efficiency was 94.9% in static solution, higher level of inhibitor concentration and lower level of temperature. The adsorption of Curcuma longa obeyed a Langmuir adsorption isotherm by formation of spontaneous physical layer on the metal surface. Scanning electron microscopy of the metal surface revealed that damage was lower in the presence of Curcuma longa. Activation studied via Arrhenius equation showed that the adsorb layer on the surface increases the energy barrier for corrosive dissolution which is also supported by the higher values of activation energy. Mathematical and statistical analyses were also used as a successful tool to correlate the corrosion rate data with operating conditions.

Original languageEnglish
Pages (from-to)1300-1310
Number of pages11
JournalJournal of Failure Analysis and Prevention
Volume18
Issue number5
DOIs
Publication statusPublished - 1 Oct 2018

Fingerprint

Petroleum
Corrosion inhibitors
Wastewater
Crude oil
Corrosion
Kinetics
Metals
Caustics
Energy barriers
Corrosion rate
Adsorption isotherms
Temperature
Dissolution
Activation energy
Chemical activation
Polarization
Adsorption
Scanning electron microscopy

Keywords

  • Electrochemical
  • Friendly inhibitor
  • Galvanic corrosion
  • Regression
  • Surface morphology

ASJC Scopus subject areas

  • Materials Science(all)
  • Safety, Risk, Reliability and Quality
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Galvanic Corrosion of Steel–Brass Couple in Petroleum Waste Water in Presence of a Green Corrosion Inhibitor : Electrochemical, Kinetics, and Mathematical View. / Khadom, Anees A.; Abod, Baker M.; Mahood, Hameed B.; Kadhum, Abdul Amir H.

In: Journal of Failure Analysis and Prevention, Vol. 18, No. 5, 01.10.2018, p. 1300-1310.

Research output: Contribution to journalArticle

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