A simulation of a three dimensional electroplating process which includes a model of the heat flow generated during the plating is presented. The steady state temperature distribution in the cell is coupled to the electric field through the nonlinear polarization (overvoltage) boundary conditions and the temperature dependence of the electrolyte conductivity. As the conductivity directly influences the deposition rate, variations due to temperature can have an impact on the shape of the plated part. The thermal and electrostatic problems are simultaneously solved using the boundary element method, and a simple iterative scheme is employed to satisfy the boundary conditions. A newly developed boundary element procedure for crack geometries is used to cope with the thin shielding present in the cell. Utilizing this technique, a computationally expensive and cumbersome multidomain decomposition of the region is avoided.
KeywordsBoundary Element Boundary Element Method Nonlinear Boundary Condition Plating Process Flux Boundary Condition
Unable to display preview. Download preview PDF.
- Gray, L.J.; Giles, G.E.: Boundary element method for regions with thin internal cavities II. Engineering Analysis (submitted)Google Scholar
- Gray, L.J.; Askew, A.L.; Giles, G.E.: Contact heat transfer by the boundary element method. Proceedings of the European Boundary Element Conference,Brussels 1988 (in press).Google Scholar
- Gray, L.J.; Giles, G.E.: Application of the Thin Cavity Method in Electroplating. Proceedings of the Boundary Element 10 Conference Southampton: Computational Mechanics 1988.Google Scholar
- Gray, L.J.: Evaluation of Hypersingular Integrals in the Boundary Element Method.Google Scholar