Wear and corrosion resistance of Nb-V carbide layers produced in vermicular cast iron using TRD treatments

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dc.contributor.authorMariani, Fabio Edson
dc.contributor.authorTakeya, Gustavo Satoru
dc.contributor.authorNeto Lombardi, Amadeu
dc.contributor.authorPicone, Carlos Alberto [UNESP]
dc.contributor.authorCasteletti, Luiz Carlos
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniv Tecnol Fed Parana
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2020-12-11T20:53:22Z
dc.date.available2020-12-11T20:53:22Z
dc.date.issued2020-09-15
dc.description.abstractNb, V and Nb-V carbide layers were produced by means of the diffusion thermo-reactive treatment (TRD) in a vermicular cast iron, in baths composed of sodium borate, aluminum, ferro-niobium and/or ferro-vanadium, at 1000 degrees C with 2 h treatment time. Austempering was carried out after the TRD treatment in a molten salt bath at 300 degrees C. The samples were characterized by optical microscopy, XRD, Vickers microhardness, Daimler-Benz Rockwell-C, microadhesive wear tests and corrosion tests using potentiodynamic polarization tests. The TRD treatments were highly efficient in the production of uniform carbide layers, with thicknesses above 25 mu m and with good adhesions to the substrates. The layers showed hardness above 2300, 2500 and 3050 HV for the cases of Nb, V and Nb-V carbides, respectively. The wear resistance of the samples was increased from 10 to 30x in relation to the austempered substrate. The layers also showed corrosion resistance much higher than that of the substrate. The results obtained indicated the great effectiveness of the TRD treatment for the production of high performance carbide layers in vermicular cast iron.en
dc.description.affiliationUniv Sao Paulo, Sao Carlos Sch Engn, Prod Engn Dept, 400 Trabalhador Saocarlense Ave, BR-13140170 Sao Carlos, SP, Brazil
dc.description.affiliationUniv Sao Paulo, Sao Carlos Sch Engn, Mat Engn Dept, 1100 Joao Dagnone Ave, BR-13140170 Sao Carlos, SP, Brazil
dc.description.affiliationUniv Tecnol Fed Parana, Mech Engn Dept, 3131 Pioneiros Ave, BR-86036370 Londrina, Parana, Brazil
dc.description.affiliationSao Paulo State Univ, 56 Brasil Ave, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.affiliationUnespSao Paulo State Univ, 56 Brasil Ave, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdCAPES: 001
dc.description.sponsorshipIdCNPq: 305294/2015-6
dc.description.sponsorshipIdCNPq: 141416/2016-5
dc.format.extent8
dc.identifierhttp://dx.doi.org/10.1016/j.surfcoat.2020.126050
dc.identifier.citationSurface & Coatings Technology. Lausanne: Elsevier Science Sa, v. 397, 8 p., 2020.
dc.identifier.doi10.1016/j.surfcoat.2020.126050
dc.identifier.issn0257-8972
dc.identifier.urihttp://hdl.handle.net/11449/197829
dc.identifier.wosWOS:000543496400044
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofSurface & Coatings Technology
dc.sourceWeb of Science
dc.subjectVermicular cast iron
dc.subjectTRD treatment
dc.subjectAustempering
dc.subjectWear
dc.subjectCorrosion
dc.titleWear and corrosion resistance of Nb-V carbide layers produced in vermicular cast iron using TRD treatmentsen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes0346141862450103[4]
unesp.author.orcid0000-0001-5846-4279[1]
unesp.author.orcid0000-0002-7701-1360[4]

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