Abstract
PurposeChemical and electrochemical measurements were used to study the corrosion inhibition of aluminium in distilled water using one of pyridine derivatives as corrosion inhibitor.Design/methodology/approachCorrosion inhibition of aluminum in distilled water was investigated in the absence and presence of different concentrations of 2,6-di methyl pyridine (DMP). Potentiodynamic polarization, open circuit potential and Fourier Transform Infrared Spectroscopy were employed.FindingsInhibition efficiency of 86 per cent is reached with 0.0187 M of DMP at 25°C. Potentiodynamic polarization showed that DMP behaves as mixed type inhibitor. The inhibitor obeyed the Langmuir adsorption isotherm. The value of ΔG°ads suggests physico-chemical adsorption of the inhibitor molecule on the aluminium surface.Originality/valueThis paper indicates DMP could be used as corrosion inhibitor to prevent the corrosion of aluminium in in distilled water.
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