dc.contributorDias, Avelino Manuel da Silva
dc.contributor
dc.contributorhttp://lattes.cnpq.br/1840848773429843
dc.contributor
dc.contributorhttp://lattes.cnpq.br/1142442322601442
dc.contributorSilva, Luiz Cláudio Ferreira da
dc.contributor
dc.contributorhttp://lattes.cnpq.br/3812459994118013
dc.contributorFreire Júnior, Raimundo Carlos Silvério
dc.contributor
dc.contributorhttp://lattes.cnpq.br/1042806990155996
dc.contributorChristoforo, André Luis
dc.contributor
dc.contributorhttp://lattes.cnpq.br/7623383075429186
dc.creatorLibório, Maxwell Santana
dc.date.accessioned2016-04-04T21:38:35Z
dc.date.accessioned2022-10-05T23:10:54Z
dc.date.available2016-04-04T21:38:35Z
dc.date.available2022-10-05T23:10:54Z
dc.date.created2016-04-04T21:38:35Z
dc.date.issued2015-03-02
dc.identifierLIBÓRIO, Maxwell Santana. Metodologia númerico-experimental para avaliação da espessura de filmes de nitreto de titânio obtidos por processamento a plasma. 2015. 73f. Dissertação (Mestrado em Engenharia Mecânica) - Centro de Tecnologia, Universidade Federal do Rio Grande do Norte, Natal, 2015.
dc.identifierhttps://repositorio.ufrn.br/jspui/handle/123456789/20161
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3948742
dc.description.abstractIn recent decades, changes in the surface properties of materials have been used to improve their tribological characteristics. However, this improvement depends on the process, treatment time and, primarily, the thickness of this surface film layer. Physical vapor deposition (PVD) of titanium nitrate (TiN) has been used to increase the surface hardness of metallic materials. Thus, the aim of the present study was to propose a numerical-experimental method to assess the film thickness (l) of TiN deposited by PVD. To reach this objective, experimental results of hardness (H) assays were combined with a numerical simulation to study the behavior of this property as a function of maximum penetration depth of the indenter (hmax) into the film/substrate conjugate. Two methodologies were adopted to determine film thickness. The first consists of the numerical results of the H x hmax curve with the experimental curve obtained by the instrumental indentation test. This methodology was used successfully in a TiN-coated titanium (Ti) conjugate. A second strategy combined the numerical results of the Hv x hmax curve with Vickers experimental hardness data (Hv). This methodology was applied to a TiN-coated M2 tool steel conjugate. The mechanical properties of the materials studied were also determined in the present study. The thicknesses results obtained for the two conjugates were compatible with their experimental data.
dc.languagepor
dc.publisherUniversidade Federal do Rio Grande do Norte
dc.publisherBrasil
dc.publisherUFRN
dc.publisherPROGRAMA DE PÓS-GRADUAÇÃO EM ENGENHARIA MECÂNICA
dc.rightsAcesso Aberto
dc.subjectNitretação a plasma
dc.subjectIndentação instrumentada
dc.subjectElementos finitos
dc.subjectDureza
dc.titleMetodologia númerico-experimental para avaliação da espessura de filmes de nitreto de titânio obtidos por processamento a plasma
dc.typemasterThesis


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