The use of ferrous gluconate as corrosion inhibitor on aluminium alloy in 0.5M H2SO4 solution was
studied using gravimetric and potentiodynamic polarization measurements. The surface morphology of
the aluminium alloy was studied after exposure to 0.5 M H2SO4 solution in the presence and absence of
inhibitor using high resolution scanning electron microscopy equipped with energy dispersive
spectroscopy (HRSEM β EDS). The adsorption behaviour of the inhibitor was investigated. The results of
the investigation show that increase in concentration of ferrous gluconate corresponds to an improvement
on inhibition efficiency. Equally, the results showed the ferrous gluconate to be an effective corrosion
inhibitor for the aluminium in the acidic medium. The results obtained from the two methods used were
found to correlate with each other
