A Study of Ni-Co Alloy Electroforming by Using High Frequency Pulse Electric and Magnetic Fields

Abstract

In general, the use of additives which raises the density of metal-ion in electroforming solution and the application of impulse current are the common methods to improve the mechanical characteristic of electroformed layer. However, our study exhibits that it is possible to obtain better results by tailoring the relative intensity of the electric and applied magnetic fields and the flow rate of the electrolyte. The MHD (Magnetohydrodynamic) Effect arising from the application of an external magnetic field can have remarkable influence on the crystal behavior, yielding more uniform electroformed layer and electric current distribution, while providing higher deposition rate and better mechanical properties of the Ni-Co electroformed layer.