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Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/348603
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dc.contributor.CRUESPUNIVERSIDADE ESTADUAL DE CAMPINASpt_BR
dc.contributor.authorunicampVolpe, Pedro Luiz Onófrio-
dc.typeArtigopt_BR
dc.titleThe characterisation of the protective film formed by benzotriazole on the 90/10 copper-nickel alloy surface in H2SO4 mediapt_BR
dc.contributor.authorMaciel, José Maria-
dc.contributor.authorJaimes, Ruth Flavia Vera Villamil-
dc.contributor.authorCorio, Paola-
dc.contributor.authorRubim, Joel Camargo-
dc.contributor.authorVolpe, Pedro Luis-
dc.contributor.authorAgostinho Neto, Augusto-
dc.contributor.authorAgostinho, Silvia Maria Leite-
dc.subjectEspectroscopia Ramanpt_BR
dc.subject.otherlanguageRaman spectroscopypt_BR
dc.description.abstractThe nature of the protective film formed by benzotriazole (BTAH) on the surface of the 90/10 CuNi alloy in deaerated 0.5 mol L−1 H2SO4 solution containing Fe(III) ions as oxidant was investigated by weight-loss, calorimetric measurements, and by surface-enhanced Raman spectroscopy (SERS). The SERS measurements show that the protective film is composed by the [Cu(I)BTA]n polymeric complex and that the BTAH molecules are also adsorbed on the electrode surface. A modification of the BET isotherm for adsorption of gases in solids is proposed to describe the experimental results obtained from weight-loss experiments that suggest an adsorption in multilayers. Electrochemical studies of copper and nickel in 0.5 mol L−1 H2SO4 in presence and absence of BTAH have also been made as an aid to interpret the results. The calculated adsorption free energy of the cuprous benzotriazolate on the surface of the alloy is in accordance with the value for pure copperpt_BR
dc.relation.ispartofCorrosion sciencept_BR
dc.publisher.cityOxfordpt_BR
dc.publisher.countryReino Unidopt_BR
dc.publisherElsevierpt_BR
dc.date.issued2008-
dc.date.monthofcirculationMar.pt_BR
dc.language.isoengpt_BR
dc.description.volume50pt_BR
dc.description.issuenumber3pt_BR
dc.description.firstpage879pt_BR
dc.description.lastpage886pt_BR
dc.rightsFechadopt_BR
dc.sourceWOSpt_BR
dc.identifier.issn0010-938Xpt_BR
dc.identifier.eissn1879-0496pt_BR
dc.identifier.doi10.1016/j.corsci.2007.10.011pt_BR
dc.identifier.urlhttps://www.sciencedirect.com/science/article/pii/S0010938X07003046pt_BR
dc.description.sponsorshipCONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQpt_BR
dc.description.sponsorshipFUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESPpt_BR
dc.description.sponsordocumentnumberSem informaçãopt_BR
dc.description.sponsordocumentnumberSem informaçãopt_BR
dc.date.available2020-09-02T22:09:42Z-
dc.date.accessioned2020-09-02T22:09:42Z-
dc.description.provenanceSubmitted by Thais de Brito Barroso (tbrito@unicamp.br) on 2020-09-02T22:09:42Z No. of bitstreams: 0. Added 1 bitstream(s) on 2021-01-04T15:12:27Z : No. of bitstreams: 1 000254665500029.pdf: 488541 bytes, checksum: 6255f2873d0904dc36ee74ab4b56b7dd (MD5)en
dc.description.provenanceMade available in DSpace on 2020-09-02T22:09:42Z (GMT). No. of bitstreams: 0 Previous issue date: 2008en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/348603-
dc.contributor.departmentDepartamento de Físico-Químicapt_BR
dc.contributor.unidadeInstituto de Químicapt_BR
dc.subject.keywordA. benzotriazolept_BR
dc.subject.keywordA. copper–nickel alloyspt_BR
dc.subject.keywordA. corrosion inhibitorspt_BR
dc.subject.keywordB. raman spectroscopypt_BR
dc.subject.keywordC. adsorption isothermspt_BR
dc.identifier.source000254665500029pt_BR
dc.creator.orcid0000-0002-0956-5724pt_BR
dc.type.formArtigopt_BR
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