Patent ID: 6790332
Filing Date: 2004-09-14
Classification: C25D

Abstract:
A method for galvanically depositing nickel, cobalt, nickel alloys, or cobalt alloys, comprising:subjecting at least one anode and at least one cathode in a galvanic bath with periodic current pulses, said galvanic bath comprising an electrolyte containing nickel compound or cobalt compounds; and depositing nickel, cobalt, nickel alloys, or cobalt alloys on a deposition body; wherein a IA/IC ratio of an anode current density IA to a cathode current density IC is selected to be greater than 1 and smaller than 1.5, said anode current density IA and cathode current density IC being defined as current densities with respect to said deposition body during periodic pulses where said deposition body serves as anode and cathode respectively, and wherein a charge ratio QA/QC=TAIA/TCIC of a charge QA, transported during an anode pulse of duration TA, to a charge QC, transported during a cathode pulse of duration TC, is between 30% and 45%.