Kinetics of Sn and Co codeposition in citrate solutions

Survila, Arvydas; Mockus, Z.; Kanapeckait≐, Stas≐

doi:10.1016/s0013-4686(00)00633-2

Cited by 42 publications

(29 citation statements)

References 8 publications

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“…Co-Ni 23 alloys) or not, as can be noted for Cu-Co and Sn-Co alloys 24 . In the case of these last mentioned alloys, Co-alloys can be obtained from both complexed and uncomplexed species, as follows 8 :…”

Section: Introductionmentioning

confidence: 79%

“…Earlier reports [20][21][22] have showed that depending on the solution pH and on the citrate/copper ratio in the electrolyte, different copper complexes could be formed. According to the conditions showed in 31 , and no large excess of citrate was added to the baths of Table 1, the cobalt deposition must probably occur from aquo-complexes 24 .…”

Section: Cathodic Polarization Curvesmentioning

confidence: 98%

“…It means that the alloy deposition in this work must be probably taking place under limiting conditions, and the influence of cobalt deposition process in the alloy is small 8,28 . Survila et al 24 have shown that in low citrate concentration solutions, the cobalt co-deposition may occur preferentially throw aquo-complexes and at large overpotentials. Therefore, the cathodic efficiencies earlier…”

Section: Alloy Electrodepositionmentioning

confidence: 99%

“…Co-citrate complexes are only present in solutions with pH values around 5.0 and containing a large citrate concentration 24,25 . In low citrate concentration solutions, Co deposition occurs preferentially throw aquo-complexes and with a large overvoltage 24 .…”

Section: Introductionmentioning

confidence: 99%

“…In low citrate concentration solutions, Co deposition occurs preferentially throw aquo-complexes and with a large overvoltage 24 . For Cu-Co alloys coatings, citrate concentration higher than 0.5 mol.L -1 is needed to keep the bath stability and to produce of a Cu-Co solid solution 9 .…”

Section: Introductionmentioning

confidence: 99%

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Influence of cathodic current density and mechanical stirring on the electrodeposition of Cu-Co alloys in citrate bath

et al. 2008

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Cathodic polarization curves of Cu-Co alloys were galvanostatically obtained on a platinum net, using electrolytes containing copper and cobalt sulfates, sodium citrate and boric acid (pH values ranging from 4.88 to 6.00), with different mechanical stirring conditions. In order to evaluate quantitatively the influence of the applied current density and the mechanical stirring on the cathodic efficiency, the alloy composition for the Cu-Co alloy deposition process, and the average deposition potential, an experimental central composite design 2 2 was employed, and three current density intervals (0.11 to 0.60, 0.50 to 1.98 and 2.44 to 9.94 mA.cm -2 ) were chosen from the polarization curves for this purpose. The results indicated that the current density (mainly in the range between 0.11 and 0.60 mA.cm ), only the average potential was influenced by the current density. On the other hand, the mechanical stirring had a significant effect only on the copper content, for both the lowest (0.11 to 0.60 mA.cm -2 ) and the highest current density range (2.44 to 9.94 mA.cm -2 ). Indeed, in the last range, none of the studied deposition parameters presented significant influence on the studied variables, except for the copper content. This could probably be explained by the direct incorporation of Cu-Citrate complexes in the coating, which was enhanced at high current values.

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Section: Introductionmentioning

confidence: 79%