Adsorption of n‐Decylamine on Zinc from Acidic Chloride Solution

The adsorption of n‐decylamine on zinc from acidic chloride solution has been studied using the corrosion technique. The corrosion rates of zinc in acidic chloride solution containing n‐decylamine are measured as a function of n‐decylamine concentration. The degree of surface coverage as calculated from the corrosion rates is used to calculate the free energy of adsorption of n‐decylamine. The variation of negative free energy of adsorption with surface coverage is interpreted in terms of change in the mechanism of inhibitor action of n‐decylamine with concentration. The synergistic effect of n‐decylamine and chloride ions is discussed from the viewpoint of adsorption models.