Mathematical models of steel etching in the presence of tardiol

Correlation dependences obtained by the method of cuopled regression and using the Pesochinoky plan in the presence of Tardiol-D are presented. It is shown that with an increase in inhibitor concentration from 0.05 to 0.3 g/l the degree of protection, according to the data of coupled regression, increases by 7.2%, according to the data of mathematical planning - by 9.2%. With the temperature increase the protection coefficient increases, as well. The mathematical models derived can be employed to determine steel dissolution rate in the presence of inhibitors with varying etching conditions-concentration of acid, inhibitor and temperature