Aluminium corrosion inhibition using benzene-1,2,4,5-tetracarboxylic dianhydride (PMDH)
Document Type
Article
Publication Date
1-1-2010
Abstract
Purpose - The purpose of this paper is to study the inhibitory activity of benzene-1,2,4,5-tetracarboxylic dianhydride (PMDH) on aluminium corrosion in hydrochloric acid 1 M HCl. Design/methodology/approach - The inhibitive effect of PMDH towards the corrosion of aluminium in 1 M HCl solution is studied by means of electrochemical impedance spectroscopy, polarization curves (LSV) and scanning electron microscopic techniques. The effect of inhibitor concentration and temperature against inhibitor action is investigated. Findings - In the presence of inhibitor (PMDH), the corrosion resistance of aluminium is improved and the corrosion rate and corrosion current are reduced, therefore the inhibition efficiency and polarization resistance are increased. With increasing temperature and decreasing inhibitor concentrations, the rate of aluminium corrosion increased. The surfactant acts as mixed type inhibitor and obeys a Langmuir isotherm. Originality/value - The results shown in this paper are an insight to the understanding of the corrosion resistance and electrochemical behaviour of aluminium for future industrial applications and development. © Emerald Group Publishing Limited.
Keywords
Corrosion inhibitors, Electrochemistry, Metals, Surface treatment, Aluminium corrosion, Corrosion current, Design/methodology/approach, Electrochemical behaviour, HCl solution, Inhibition efficiency, Inhibitive effects, Inhibitor concentration, Inhibitory activity, Langmuir isotherm, Mixed type, Polarization curves, Polarization resistances, Scanning electron microscopic, Aluminum, Benzene, Corrosion prevention, Corrosion rate, Corrosion resistance, Electrochemical corrosion, Electrochemical impedance spectroscopy, Hydrochloric acid, Industrial applications, Organic polymers, Polarization, Surface active agents
Divisions
CHEMISTRY
Publication Title
Anti-Corrosion Methods and Materials
Volume
57
Issue
1
Publisher
Emerald
Additional Information
Department of Chemistry, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA