Cyclohexylamine acts as a pitting inhibitor for AISI 304 stainless steel in neutral NaCl solutions. The pitting resistance was investigated by means of different electrochemical measurement methods

such as stable anodic polarization curves

EIS

potentiostatic open - circuit relaxation curves and chronopotential method for pit growth etc. It was found that cyclohexylamine can prevent AISI 304 in NaCl solutions from both pitting initiation and pitting propagation. Since cyclohexylamine is adsorbed on the metal surface

it enhances the self - repaired ability of passive film so that it can hinder pitting nu-cleation and pit growth.