1Department of Chemistry, Government Arts College, Salem-636 007, Tamil Nadu, India
2Department of Chemistry, Periyar University, Salem-636 011, Tamil Nadu, India
3School of Display and Chemical Engineering, Yeungnam University, Gyeongsan, South Korea
*Corresponding Author E-mail: sherinbanu77@gmail.com
Online published on 6 March, 2013.
Molybdate conversion coatings (MCC) were formed directly on aluminium by simple chemical immersion method at various time intervals, temperatures from various bath composition. The influence of process parameters such as temperature, immersion time and concentration of the corrosion resistance behaviour and surface morphology was studied. The corrosion resistance behaviour was studied by Tafel polarization and Electrochemical Impedance Spectroscopy. The surface morphology of the coatings has been analyzed by Scanning Electron Microscope. The elemental compositions of the coatings are analyzed by Energy dispersive X-ray spectroscopy (EDX).
Aluminium, molybdate conversion coatings, Corrosion resistance, Surface analysis
