Advertisement

Prediction of electrodeposition rates from an impinging jet

Authors

  • Quan Li,

    1. Dept. of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, PA 18015
    Search for more papers by this author
  • J. D. A. Walker

    Corresponding author
    1. Dept. of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, PA 18015
    • Dept. of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, PA 18015
    Search for more papers by this author

Abstract

A mathematical model and numerical algorithm are developed to predict electrodeposition rates from a 2-D jet of electrolyte that impinges on a flat surface. The principal situations of interest are for applied voltages that produce current densities below the limiting current. The motion is assumed to be at high speed with the jet inducing a thin laminar boundary layer on the surface; a progressively thinner concentration layer and an electrochemical double layer near the surface are accounted for. Two cases, corresponding to a submerged and unsubmerged jet, are considered. A boundary integral method is used to compute the current density along the plate in a general iterative numerical procedure coupled to the solution of the hydrodynamic, concentration and electrochemical boundary layers. The results show that relatively high deposition rates occur near the point of impingement and that altering the jet angle relative to the surface influences local electrodeposition rates significantly.

Ancillary