Cyanide-Free Silver Electrochemical Deposition on Copper and Nickel. Issue 14 (18th October 2018)

• Record Type: Journal Article
• Authors: Christophe, J.; Guilbert, G.; Rayée, Q.; Poelman, M.; Olivier, M.-G.; Buess-Herman, C.
• Is Part Of: Journal of the Electrochemical Society. Volume 165:Issue 14(2018)
• Page Start: D676
• Page End: D680
• Publication Date: 2018-10-18
• Subjects: Electrodeposition -- Cyanide-free bath -- deep eutectic solvent -- Silver plating; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.1011813jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : Uracil was used as complexing agent to developp cyanide-free processes for silver deposition on copper and nickel substrates. We have highlighted that the molar ratio Ur/Ag + between uracil and silver ions concentrations and the pH are crucial in the formulation of a stable and efficient bath and were found to be equal to 4 and 13.7 respectively. Silver was deposited in a single step on copper according to a three-dimensional nucleation mechanism while silver plating of nickel substrates was found to require an additionnal silver strike step. We worked out a choline chloride – oxalic acid DES-based silver solution which allowed to obtain bright, adherent and ductile silver coatings on Ni.