Effect of magnetic field on anodic dissolution in electrochemical machining

The authors modeled the electrochemical reactions of ECM with magnetic field using COMSOL commercial software. They studied the effect of filed strength and direction on the electrolyte mass transfer rate and the anodic dissolution amount. The mathematical models of the electrolyte rate distribution and the anodic dissolution amount were established. Simulation results indicated that the magnetic field would enhance the mass transfer rate and anodic dissolution amount and that the direction of the field will play a bigger part than the intensity in this connection. Experiments were also conducted to verify the model accuracy. Their experimental results were in good consistency with those of simulations. It is observed that the direction of the magnetic field that has a decisive say in altering the electrochemical machining system and this conclusion will potentially promote the application of magnetic field assisted electrochemical machining. The magnetic field works favorably to electromagnetic anodic dissolution reactions by improving both the mass transport rate and the corrosion rate.