Anodic metal matrix removal rate in electrolytic in-process dressing I: Two-dimensional modeling

The electric field or current density distribution around a diamond particl e embedded in a metal anode during electrolytic in-processing dressing (ELI D) is calculated for the two-dimensional case of a long diamond particle wi thout protrusion and for a periodic array of such long, parallel particles. It is found that there is a field concentration at the diamond/metal bound ary so that the metal dissolution rate is the largest at such boundary. For the periodic array, the average current density is independent of the diam ond concentration so that the metal dissolution rate increases with increas ing diamond concentration. Hence, for the same ELID effect, the current req uired for a high diamond concentration tool is less than that required for a low diamond concentration tool. (C) 2000 American Institute of Physics. [ S0021-8979(00)02105-8].