Modeling and Simulation of Non-Uniform Electrolytic Machining Based on Cellular Automata

Porous microstructure is a common surface morphology that widely used in antifouling, drag reduction, adsorption, and other applications. In this paper, the lattice gas automata (LGA) method was to simulate non-uniform electrochemical machining of porous structure at mesoscopic level. cellular space, metal electrolyte were separated into orderly grids, migration corrosive particles determined by an electric field, influences concentration gradient corrosion products considered. It found different pore morphologies formed due competition between dissolution diffusion. When voltage low, diffusion sufficient, no deposit bottom pore. The grew faster along depth attained cylindrical shape with large depth-to-diameter ratio. As increased, rates all directions same; therefore, became approximately spherical. continued increase, not discharged time rapid rate. Consequently, sedimentary layer hindered further dissolution. turn, disc-shaped secondary pores formed. obtained simulation results verified experimental findings. This study revealed causes pores, which has certain guiding significance for machining.