Corrosion Resistance of Electroless Ni-B-W-Mo Coatings using Electrochemical Impedance Spectroscopy

Detalhes bibliográficos
Autor(a) principal: Mukhopadhyay,Arkadeb
Data de Publicação: 2019
Outros Autores: Barman,Tapan Kumar, Sahoo,Prasanta
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=S0872-19042019000300005
Resumo: Quaternary Ni-B-W-Mo coatings were deposited on AISI 1040 steel by the electroless method. Some of the specimens were heat-treated at 300, 350, 400, 450 and 500 °C, for 1 hour. The deposited coatings contained a high weight percentage of W, and a low B content was detected by energy dispersive X-ray analysis. The coatings in as-deposited state were amorphous, and heat treatment resulted in crystallization with the precipitation of borides. W and Mo were present in the coatings, mainly in a solid solution form. The surface morphology study revealed densely nodulated structures, which are pertinent for sodium borohydride reduced electroless nickel coatings. Electrochemical impedance spectroscopy studies were conducted to determine the corrosion resistance of the as-deposited and heat-treated coatings in a 3.5% NaCl electrolyte. The corroded surfaces were observed under scanning electron microscope, to study the corrosion mechanism.
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spelling Corrosion Resistance of Electroless Ni-B-W-Mo Coatings using Electrochemical Impedance Spectroscopyelectroless nickelNi-B-W-Mocoating and corrosion resistanceQuaternary Ni-B-W-Mo coatings were deposited on AISI 1040 steel by the electroless method. Some of the specimens were heat-treated at 300, 350, 400, 450 and 500 °C, for 1 hour. The deposited coatings contained a high weight percentage of W, and a low B content was detected by energy dispersive X-ray analysis. The coatings in as-deposited state were amorphous, and heat treatment resulted in crystallization with the precipitation of borides. W and Mo were present in the coatings, mainly in a solid solution form. The surface morphology study revealed densely nodulated structures, which are pertinent for sodium borohydride reduced electroless nickel coatings. Electrochemical impedance spectroscopy studies were conducted to determine the corrosion resistance of the as-deposited and heat-treated coatings in a 3.5% NaCl electrolyte. The corroded surfaces were observed under scanning electron microscope, to study the corrosion mechanism.Sociedade Portuguesa de Electroquímica2019-05-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042019000300005Portugaliae Electrochimica Acta v.37 n.3 2019reponame: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=S0872-19042019000300005Mukhopadhyay,ArkadebBarman,Tapan KumarSahoo,Prasantainfo:eu-repo/semantics/openAccess2024-02-06T17:07:29Zoai:scielo:S0872-19042019000300005Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:20:24.615201Repositório 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 Corrosion Resistance of Electroless Ni-B-W-Mo Coatings using Electrochemical Impedance Spectroscopy
title Corrosion Resistance of Electroless Ni-B-W-Mo Coatings using Electrochemical Impedance Spectroscopy
spellingShingle Corrosion Resistance of Electroless Ni-B-W-Mo Coatings using Electrochemical Impedance Spectroscopy
Mukhopadhyay,Arkadeb
electroless nickel
Ni-B-W-Mo
coating and corrosion resistance
title_short Corrosion Resistance of Electroless Ni-B-W-Mo Coatings using Electrochemical Impedance Spectroscopy
title_full Corrosion Resistance of Electroless Ni-B-W-Mo Coatings using Electrochemical Impedance Spectroscopy
title_fullStr Corrosion Resistance of Electroless Ni-B-W-Mo Coatings using Electrochemical Impedance Spectroscopy
title_full_unstemmed Corrosion Resistance of Electroless Ni-B-W-Mo Coatings using Electrochemical Impedance Spectroscopy
title_sort Corrosion Resistance of Electroless Ni-B-W-Mo Coatings using Electrochemical Impedance Spectroscopy
author Mukhopadhyay,Arkadeb
author_facet Mukhopadhyay,Arkadeb
Barman,Tapan Kumar
Sahoo,Prasanta
author_role author
author2 Barman,Tapan Kumar
Sahoo,Prasanta
author2_role author
author
dc.contributor.author.fl_str_mv Mukhopadhyay,Arkadeb
Barman,Tapan Kumar
Sahoo,Prasanta
dc.subject.por.fl_str_mv electroless nickel
Ni-B-W-Mo
coating and corrosion resistance
topic electroless nickel
Ni-B-W-Mo
coating and corrosion resistance
description Quaternary Ni-B-W-Mo coatings were deposited on AISI 1040 steel by the electroless method. Some of the specimens were heat-treated at 300, 350, 400, 450 and 500 °C, for 1 hour. The deposited coatings contained a high weight percentage of W, and a low B content was detected by energy dispersive X-ray analysis. The coatings in as-deposited state were amorphous, and heat treatment resulted in crystallization with the precipitation of borides. W and Mo were present in the coatings, mainly in a solid solution form. The surface morphology study revealed densely nodulated structures, which are pertinent for sodium borohydride reduced electroless nickel coatings. Electrochemical impedance spectroscopy studies were conducted to determine the corrosion resistance of the as-deposited and heat-treated coatings in a 3.5% NaCl electrolyte. The corroded surfaces were observed under scanning electron microscope, to study the corrosion mechanism.
publishDate 2019
dc.date.none.fl_str_mv 2019-05-01
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=S0872-19042019000300005
url http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042019000300005
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042019000300005
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.37 n.3 2019
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
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