Abstract
The inhibitive effect of glycine on the corrosion of aluminium in 1IN HCl and 1N H_2SO_4 were studied at 303K, 348K and 358K by weight loss method. The weight loss data were confirmed by potentiostatic polarization method. The inhibition efficiency of glycine increased with increase in concentration of inhibitor (0.1 percent to 1.0 percent) and decreased with rise in temperature from 303K to 358K. The adsorption of this compound on the aluminium surface from the acid has been found to obey Temkin's adsorption isotherm. The potentiostatic polarization results revealed that glycine is a mixed type inhibitor. The values of activation energy (Ea) indicated physical adsorption of this compound on the metal surface.
NSTL