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Influence of anodic pulses and periodic current reversion on electrodeposits
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Elektronik. Jönköping University, Sweden.ORCID iD: 0000-0002-7095-1907
RISE, SP – Sveriges Tekniska Forskningsinstitut. Jönköping University, Sweden; University of Trento, Italy.
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Elektronik, Miljötålighet. Jönköping University, Sweden.
Chang Zhou University, China.
2014 (English)In: Transactions of the Institute of Metal Finishing, ISSN 0020-2967, E-ISSN 1745-9192, Vol. 92, no 6, p. 336-341Article 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, p. 336-341
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Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-6720DOI: 10.1179/0020296714Z.000000000210Scopus ID: 2-s2.0-84913584983Local ID: 23721OAI: oai:DiVA.org:ri-6720DiVA, id: diva2:964560
Available from: 2016-09-08 Created: 2016-09-08 Last updated: 2020-12-01Bibliographically approved

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