Voltammetric Studies on the Role of Additives in Bright Zinc Electrodeposition from an Alkaline Non-Cyanide Bath

Detalhes bibliográficos
Autor(a) principal: Shanmugasigamani,S.
Data de Publicação: 2009
Outros Autores: Pushpavanam,M.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042009000600008
Resumo: Influence of various carrier additives and brightener additives on the voltammetric behavior of zinc electro deposition from an alkaline non-cyanide bath was studied. Two different cathodic peaks were observed. Peak I has been attributed to hydrogen reduction / UPD of zinc and peak II to reduction of the metal. The extent of polarization of the zinc deposition to more negative potentials and the corresponding peak current decide the nature of deposits. PVA was found to be the best carrier additive. PVA chains retain zinc hydroxyl anions and control the speed of the rate determining step. Unsaturated aldehydes bring about 3-dimensional nucleation and further increase the polarization when added with PVA.
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spelling Voltammetric Studies on the Role of Additives in Bright Zinc Electrodeposition from an Alkaline Non-Cyanide Bathaddition agentsalkaline non-cyanide bathbright zinc platingcyclic voltammetrypotential scan rangeInfluence of various carrier additives and brightener additives on the voltammetric behavior of zinc electro deposition from an alkaline non-cyanide bath was studied. Two different cathodic peaks were observed. Peak I has been attributed to hydrogen reduction / UPD of zinc and peak II to reduction of the metal. The extent of polarization of the zinc deposition to more negative potentials and the corresponding peak current decide the nature of deposits. PVA was found to be the best carrier additive. PVA chains retain zinc hydroxyl anions and control the speed of the rate determining step. Unsaturated aldehydes bring about 3-dimensional nucleation and further increase the polarization when added with PVA.Sociedade Portuguesa de Electroquímica2009-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042009000600008Portugaliae Electrochimica Acta v.27 n.6 2009reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAPenghttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042009000600008Shanmugasigamani,S.Pushpavanam,M.info:eu-repo/semantics/openAccess2024-02-06T17:07:03Zoai:scielo:S0872-19042009000600008Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:20:08.289600Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Voltammetric Studies on the Role of Additives in Bright Zinc Electrodeposition from an Alkaline Non-Cyanide Bath
title Voltammetric Studies on the Role of Additives in Bright Zinc Electrodeposition from an Alkaline Non-Cyanide Bath
spellingShingle Voltammetric Studies on the Role of Additives in Bright Zinc Electrodeposition from an Alkaline Non-Cyanide Bath
Shanmugasigamani,S.
addition agents
alkaline non-cyanide bath
bright zinc plating
cyclic voltammetry
potential scan range
title_short Voltammetric Studies on the Role of Additives in Bright Zinc Electrodeposition from an Alkaline Non-Cyanide Bath
title_full Voltammetric Studies on the Role of Additives in Bright Zinc Electrodeposition from an Alkaline Non-Cyanide Bath
title_fullStr Voltammetric Studies on the Role of Additives in Bright Zinc Electrodeposition from an Alkaline Non-Cyanide Bath
title_full_unstemmed Voltammetric Studies on the Role of Additives in Bright Zinc Electrodeposition from an Alkaline Non-Cyanide Bath
title_sort Voltammetric Studies on the Role of Additives in Bright Zinc Electrodeposition from an Alkaline Non-Cyanide Bath
author Shanmugasigamani,S.
author_facet Shanmugasigamani,S.
Pushpavanam,M.
author_role author
author2 Pushpavanam,M.
author2_role author
dc.contributor.author.fl_str_mv Shanmugasigamani,S.
Pushpavanam,M.
dc.subject.por.fl_str_mv addition agents
alkaline non-cyanide bath
bright zinc plating
cyclic voltammetry
potential scan range
topic addition agents
alkaline non-cyanide bath
bright zinc plating
cyclic voltammetry
potential scan range
description Influence of various carrier additives and brightener additives on the voltammetric behavior of zinc electro deposition from an alkaline non-cyanide bath was studied. Two different cathodic peaks were observed. Peak I has been attributed to hydrogen reduction / UPD of zinc and peak II to reduction of the metal. The extent of polarization of the zinc deposition to more negative potentials and the corresponding peak current decide the nature of deposits. PVA was found to be the best carrier additive. PVA chains retain zinc hydroxyl anions and control the speed of the rate determining step. Unsaturated aldehydes bring about 3-dimensional nucleation and further increase the polarization when added with PVA.
publishDate 2009
dc.date.none.fl_str_mv 2009-01-01
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042009000600008
url http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042009000600008
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042009000600008
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Portuguesa de Electroquímica
publisher.none.fl_str_mv Sociedade Portuguesa de Electroquímica
dc.source.none.fl_str_mv Portugaliae Electrochimica Acta v.27 n.6 2009
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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