Effect of Magnetized Water on Corrosion Resistance of Metals

Magnetic treatment water is widely used in the industrial water treatment, but it has different effects on the corrosion resistance of magnetized water for different metals. The corrosion resistance of 20G carbon steel and 316L stainless steel was studied respectively under the condition of simulated boiler water with and without magnetization (pH = 9.0) at 300 ℃ by polarization curves and electrochemical impedance spectroscopy. The results showed that the magnetization of simulated boiler water could increase the resistance value and reduce the corrosion current density of 20G carbon steel, while the impedance value reduced and the current density increased of the 316L stainless steel electrodes in the magnetizated simulated boiler water. The results showed that the simulated boiler water treated by magneticzation could improve the corrosion resistance of 20G carbon steel, but reduces the corrosion resistance of 316L stainless steel.