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Influence of anodic pulses and periodic current reversion on electrodeposits
Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology.
Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology.ORCID iD: 0000-0003-2924-137X
Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology.
Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing - Surface technology.
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2014 (English)In: Transactions of the Institute of Metal Finishing, ISSN 0020-2967, E-ISSN 1745-9192, Vol. 92, no 6, 336-341 p.Article in journal (Refereed) Published
Abstract [en]

This paper discusses how anodic pulses and periodic current reversion influence electrodeposition. Depending on the involved metal and electrolyte, very different effects can be observed and taken advantage of. The Wagner number, Wa, describing the current distribution is shown to be useful for predicting the throwing power at low frequencies of current reversion, even in complex electrochemical systems, but is less useful at higher frequencies. Passivation can occur due to oxide formation, super-saturation of metal salts or depletion of complexing agents at the electrode surface. Furthermore, dissolution and desorption processes in the anodic period can have strong influence on the succeeding cathodic electrocrystallisation affecting preferred crystal orientation, intrinsic stress and current efficiency. A literature survey is combined with experiments from silver plating from a cyanide bath.

Place, publisher, year, edition, pages
2014. Vol. 92, no 6, 336-341 p.
Keyword [en]
Pulse reverse, Periodic current reversion, Silver, Throwing power, Passivation, Internal stress
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:hj:diva-25505DOI: 10.1179/0020296714Z.000000000210ISI: 000346154000008Scopus ID: 2-s2.0-84913584983Local ID: JTHMaterialISOAI: oai:DiVA.org:hj-25505DiVA: diva2:775969
Available from: 2015-01-05 Created: 2015-01-05 Last updated: 2017-07-06Bibliographically approved

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Leisner, PeterZanella, CaterinaBelov, Ilja
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CiteExportLink to record
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Citation style
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