Thermodynamics and Electrochemical Studies of Corrosion at Stainless Steel 316 by Aurin tricarboxylic acid ammonium salt in hydrochloric acid

The influence of the concentration of Aurin tricarboxylic acid ammonium salt the corrosion of 316 stainless steel (SS) in chloride acid 1M solutions was studied. The potentiodynamicspolarization and scanning electron microscopy (SEM) have been used. The inhibition efficiency increased with an increase in the concentration of Aurin tricarboxylic acid ammonium salt.The adsorption of Aurin tricarboxylic acid ammonium salt onto the SS surface occure according tothe Langmuir isotherm. The corrosion kinetic parameters of 316 stainless steel and thermodynamic adsorption parameters for Aurin tricarboxylic acid ammonium salt were determined and discussed

کلیدواژه ها:

stainless steel 316 ، Aurin tricarboxylic acid ammonium salt ، Potentiodynamics polarization ، Corrosion inhibition ، Kinetic parameters