Study and preparation of silver electrodeposits at negative potentials

Preparation of Co–Ag films by direct and pulse electrochemical methods

“…Fig. 1, curve a, shows the voltammogram from the optimized silver bath (Ag bath) under quiescent conditions, in which peak A appeared related to mass control silver deposition [20]. When cobalt(II) is present, the beginning of the silver deposition advanced, free-silver(I) concentration increased since cobalt(II) was slightly complexed with the agents present in the bath [19].…”

“…The aim of the work is to present a systematic study of Co-Ag preparation from a new electrolytic bath in order to favour the simultaneous electrodeposition of cobalt and silver and to modulate the deposits composition. The tested bath was selected on the basis of a previously-developed one containing thiourea as the main complexing agent [19], sodium gluconate and boric acid (Ag bath) that was able to deposit Ag at suitable negative potentials [20]. The interest is the preparation of uniform Co-Ag deposits of several microns (<10 lm) thick with adjustable cobalt percentages.…”

The iron-nickel-molybdenum (Fe-Ni-Mo) electrodeposited alloy on n-type silicon

“…The presence of molybdenum in metal alloys increases their magnetic interests [19, 4, and 21] and constitutes a protection of these metals against corrosion [23]. Thus, the increase of Mo quantity in the metallic films composition increases their resistivity [4].…”

“…Thus, the increase of Mo quantity in the metallic films composition increases their resistivity [4]. The electrodeposition of molybdenum with an iron-group element occurs through the socalled induced codeposition mechanism [23,24]. Molybdenum cannot be fully reduced in aqueous solutions by itself.…”

“…A concentration of 0.008 M in molybdate is chosen to enhance Mo incorporation into the deposits [23,25]. The influence of polarization, pH bath and Molybdenum concentration on the morphology and on the final composition of the deposits has been examined.…”