Tin Electrodeposition from Sulfuric Acid Solution Containing Nigella Sativa Essential Oil Added

Abstract

Experimental investigations have been performed, using cyclic and linear sweep
Voltammetry, to determine the effects of Nigella sativa essential oil additive (NS) on the
electrodeposition of tin on mild steel in acid sulfuric solution. The experiments were
performed under different plating time, different current densities, pH and temperature
conditions. Tin electrodeposition on mild steel was performed using a DC - supply at
denoted operating parameters. The presence of the NS additive caused an increase of the
activation energy and of the overvoltage of the reduction of hydrogen and stannous ions.
The surface of the plated steel was examined using Scanning electron microscope. Different
surface characteristics were obtained depending upon the presence or free-additive. The
electrodeposition rate of the plated surface was also determined by a gravimetric
technique. The quality of the electro-deposition of tin, in the presence of Nigella sativa, was
good as indicated by the microstructural morphology of the plated surface except for the
few porosities demonstrated.