Influence of Perpendicular Magnetic Field Strength on Corrosion Resistance of 316 Stainless Steel in Nitric Acid

Abstract

Austenitic stainless steels find extensive applications across various industries. The versatility of these steels stems from their impressive combination of properties, such as high resistance to general corrosion, exceptional mechanical characteristics, and cost-effectiveness. This study aims to analyze the impact of perpendicular magnetic field strength in an aerated solution of 68% weight nitric acid on the corrosion kinetics of AISI 316 austenitic stainless steel after one hour of immersion. Studies were conducted on open circuit potential (OCP), polarization and electrochemical impedance spectroscopy (EIS) tests. All tests were performed at a temperature of 22 °C. The results show that increased magnetic field strength decreases open circuit potential (OCP) and transfer resistance (Rt), and increases double layer capacity (Cd), polarization resistance (Rp), and corrosion potential (Ecorr) of AISI 316 stainless steel in a nitric acid solution. The magnetic field intensity influences the parameters of corrosion kinetics of 316 stainless steel in an aerated solution of 68 % weight nitric acid.