Study of essential oils as vapour phase inhibitors for corrosion of mild steel and copper

Abstract

In the present investigation five essential oils from natural products namely Jasminum Grandiflorum Jasminum Sambac Oleum Palmarosae Ocimum Basilicum and Vetiveria Zizanioides have been chosen as Vapour phase Corrosion Inhibitor to study the corrosion inhibition properties of the these oils on mild steel and copper These essential oils were procured from a perfume manufacturing company They were systematically characterized by Fourier Transform Infrared spectroscopy and Gas Chromatographic analysis The corrosion rate surface coverage and inhibition efficiency of the VCI were determined by various weight loss methods such as VIA test F12 Cyclic corrosion test Salt spray test Long duration protection test Stevenson chamber test and electrochemical methods such as Potentiodynamic polarization and A C Impedance methods The suitability of the oils in packaging was studied by Razor Blade test The application of the oils in protecting electrical and electronic components was studied by visual observation method