title: Magnetic field effects on electrochemical metal depositions.
abstract: This paper discusses recent experimental and numerical results from the authors' labs on the effects of moderate magnetic (B) fields in electrochemical reactions. The probably best understood effect of B fields during electrochemical reactions is the magnetohydrodynamic (MHD) effect. In the majority of cases it manifests itself in increased mass transport rates which are a direct consequence of Lorentz forces in the bulk of the electrolyte. This enhanced mass transport can directly affect the electrocrystallization. The partial currents for the nucleation of nickel in magnetic fields were determined using anin situmicro-gravimetric technique and are discussed on the basis of the nucleation model of Heerman and Tarallo. Another focus of the paper is the numerical simulation of MHD effects on electrochemical metal depositions. A careful analysis of the governing equations shows that many MHD problems must be treated in a 3D geometry. In most cases there is a complex interplay of natural and magnetically driven convection.
authors.affiliation: Department of Physical Chemistry and Electrochemistry, Dresden University of Technology, D-01062 Dresden, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Bund
authors.affiliation: Department of Physical Chemistry and Electrochemistry, Dresden University of Technology, D-01062 Dresden, Germany.
authors.forename: Adriana
authors.initials: A
authors.lastname: Ispas
authors.affiliation: Research Center Dresden Rossendorf, MHD group, PO Box 51 01 19, D-01314 Dresden, Germany.
authors.forename: Gerd
authors.initials: G
authors.lastname: Mutschke
keywords: electroplating; experiment; magnetoelectrolysis; magnetohydrodynamics; numerical simulation