The Butler-Volmer equation analysis was used to develop a new calculation method which analyses the data corresponding to intermediate values of anodic and cathodic polarizations in inhibited 2M HCl solutions without having to resort to simplifying hypotheses that might introduce calculation errors. Comparison of the values obtained from gravimetric and electrochemical methods gave more satisfactory results than in previous developments, thus making it possible to affirm that this is a fast and reliable tool for obtaining values for corrosion rate, anodic and cathodic Tafel slopes, and the value of the constant B in the Stern-Geary equation.
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