Comportamento mecânico de uma cerâmica Y-TZP: efeito de tratamentos de superfície e técnicas de processamento
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações do UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/13725 |
Resumo: | This study is composed by three studies with respective goals: 1st study- to evaluate the effect of post-processing surface treatments (polishing, heat treatment/annealing and glazing), associated or not with autoclave aging (LTD– Low Temperature Degradation) on the surface micro-morphology, phase transformation (t-m) and mechanical behavior (flexural strength and structural reliability) of a Y-TZP ceramic; 2nd study- to evaluate the effect of postprocessing surface treatments and associations (polishing, heat treatment, glazing, polishing + heat treatment and polishing + glazing) on the surface micro-morphology, phase transformation (t-m) and fatigue behavior of Y-TZP ceramic; 3rd study- to evaluate the effect of different pre-sintering fabrication processing techniques (CAD/CAM milling x in-lab fabrication processing techniques) on the outcomes aforementioned. For three studies, discs of Y-TZP ceramic were manufactured according to ISO: 6872-2008. To the first study, the specimens were divided into 10 groups according to the aging (with or without) and surface treatment (Ctrl; “as-sintered”; Ctrl + Aut: ‘as-sintered” + aging; Gr: ground with diamond bur; Gr + Aut: ground with diamond bur + aging; Gr + HT: ground with diamond bur + heat treatment; Gr + HT + Aut: ground with diamond bur + heat treatment+ aging; Gr + Pol: ground with diamond bur + polishing; Gr + Pol + Aut: ground with diamond bur + polishing + aging; Gr + Gl: ground with diamond bur + glazing; Gr + Gl + Aut: ground with diamond bur + glazing + aging. To the second study, the specimens were divided into 7 groups: Ctrl: “as-sintered”; Gr: ground; Gr + HT: ground and heat treatment; Gr + Pol: ground and polishing; Gr + Pol + HT: ground, polishing and heat treatment; Gr + Gl: ground and glazing; Gr + Pol + Gl: ground, polishing and glazing. To the third study, the specimens were divided into 5 groups: Polished: polishing group (conventional process); Machined: CAD/CAM milling; Fine, Xfine and SiC: fabrication using a cutting machine followed by grinding with diamond bur fine, xfine and 220-grit silicon carbide, respectively. All of the grinding procedures of the third study were performed before sintering. Regarding the first study, it observed that polishing generated higher characteristic strength than the other surface treatments and reduced the surface roughness. These findings corroborate to ones from the second study: the polishing promoted higher fatigue strength. According to the third study, the grinding with fine diamond burs (46μm) before sintering showed to be the best protocol to mimic the surface and the mechanical behavior of Y-TZP ceramic milled by CAD/CAM. |
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2018-07-10T14:22:50Z2018-07-10T14:22:50Z2017-07-07http://repositorio.ufsm.br/handle/1/13725This study is composed by three studies with respective goals: 1st study- to evaluate the effect of post-processing surface treatments (polishing, heat treatment/annealing and glazing), associated or not with autoclave aging (LTD– Low Temperature Degradation) on the surface micro-morphology, phase transformation (t-m) and mechanical behavior (flexural strength and structural reliability) of a Y-TZP ceramic; 2nd study- to evaluate the effect of postprocessing surface treatments and associations (polishing, heat treatment, glazing, polishing + heat treatment and polishing + glazing) on the surface micro-morphology, phase transformation (t-m) and fatigue behavior of Y-TZP ceramic; 3rd study- to evaluate the effect of different pre-sintering fabrication processing techniques (CAD/CAM milling x in-lab fabrication processing techniques) on the outcomes aforementioned. For three studies, discs of Y-TZP ceramic were manufactured according to ISO: 6872-2008. To the first study, the specimens were divided into 10 groups according to the aging (with or without) and surface treatment (Ctrl; “as-sintered”; Ctrl + Aut: ‘as-sintered” + aging; Gr: ground with diamond bur; Gr + Aut: ground with diamond bur + aging; Gr + HT: ground with diamond bur + heat treatment; Gr + HT + Aut: ground with diamond bur + heat treatment+ aging; Gr + Pol: ground with diamond bur + polishing; Gr + Pol + Aut: ground with diamond bur + polishing + aging; Gr + Gl: ground with diamond bur + glazing; Gr + Gl + Aut: ground with diamond bur + glazing + aging. To the second study, the specimens were divided into 7 groups: Ctrl: “as-sintered”; Gr: ground; Gr + HT: ground and heat treatment; Gr + Pol: ground and polishing; Gr + Pol + HT: ground, polishing and heat treatment; Gr + Gl: ground and glazing; Gr + Pol + Gl: ground, polishing and glazing. To the third study, the specimens were divided into 5 groups: Polished: polishing group (conventional process); Machined: CAD/CAM milling; Fine, Xfine and SiC: fabrication using a cutting machine followed by grinding with diamond bur fine, xfine and 220-grit silicon carbide, respectively. All of the grinding procedures of the third study were performed before sintering. Regarding the first study, it observed that polishing generated higher characteristic strength than the other surface treatments and reduced the surface roughness. These findings corroborate to ones from the second study: the polishing promoted higher fatigue strength. According to the third study, the grinding with fine diamond burs (46μm) before sintering showed to be the best protocol to mimic the surface and the mechanical behavior of Y-TZP ceramic milled by CAD/CAM.A presente dissertação está composta por três estudos com respectivos objetivos: estudo 1- avaliar o efeito de tratamentos de superfície (polimento, tratamento térmico e glaze), associados ou não ao envelhecimento em autoclave (LTD), na micromorfologia de superfície, na transformação de fase (t-m), na resistência à flexão biaxial e na confiabilidade estrutural (Análise de Weibull) de uma cerâmica Y-TZP desgastada por ponta diamantada; estudo 2- avaliar o efeito de diferentes tratamentos de superfície e de suas associações (polimento, tratamento térmico, glaze, polimento + tratamento térmico, polimento + glaze) na micromorfologia de superfície, na transformação de fase (t-m) e no comportamento em fadiga de uma cerâmica Y-TZP desgastada por ponta diamantada; estudo 3- avaliar o efeito de diferentes métodos de confecção de amostras pré-sinterizadas (usinagem em CAD/CAM x técnicas de confecção em laboratório) nos desfechos acima mencionados. Para os três estudos, discos de cerâmica Y-TZP foram confeccionados conforme ISO 6872/2008. No estudo 1, os espécimes foram alocados em 10 grupos de acordo com o fator ‘tratamento de superfície’(Ctrl: sem tratamento; Ctrl + Aut: sem tratamento e envelhecido; Gr: desgastado; Gr + Aut: desgastado e envelhecido; Gr + HT: desgastado e tratado termicamente; Gr + HT + Aut: desgastado, tratado termicamente e envelhecido; Gr + Pol: desgastado e polido; Gr + Pol + Aut: desgastado, polido e envelhecido; Gr + Gl: desgastado e glazeado; Gr + Gl + Aut: desgastado, glazeado e envelhecido e o fator‘envelhecimento’ (com ou sem). No estudo 2, os espécimes foram alocados em 7 grupos de acordo com o tratamento de superfície: Ctrl: sem tratamento; Gr: desgastado; Gr + HT: desgastado e tratado termicamente; Gr + Pol: desgastado e polido; Gr + Pol + HT: desgastado, polido e tratado termicamente; Gr + Gl: desgastado e glazeado; Gr + Pol + Gl: desgastado, polido e glazeado. Para o estudo 3, os espécimes cerâmicos foram divididos em 5 grupos: Polished: grupo polido (confecção convencional); Machined: usinados pelo sistema CAD/CAM; grupos Fine, XFine e SiC: discos obtidos em máquina de corte e desgastados com ponta diamantada fine, com ponta diamantada xfine, e com lixa de carbeto de silício, respectivamente. Todos os desgastes do estudo 3 foram realizados antes da sinterização. Em relação ao estudo 1, observou-se que o polimento gerou maior resistência característica quando comparado aos demais tratamentos de superfície, além de ter reduzido a rugosidade. Esses dados corroboram com os resultados do estudo 2: polimento gerou maior resistência a fadiga. De acordo com o estudo 3, o desgaste com ponta diamantada de granulação fina (46μm) previamente a sinterização, apresentou o maior potencial em mimetizar tanto as características superficiais, quanto o comportamento mecânico gerado pela usinagem CAD/CAM.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESporUniversidade Federal de Santa MariaCentro de Ciências da SaúdePrograma de Pós-Graduação em Ciências OdontológicasUFSMBrasilOdontologiaAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessCAD/CAMDegradação hidrotérmicaEnvelhecimento em baixa temperaturaFadigaResistência à flexãoTratamento de superfícieZircônia policristalina parcialmente estabilizada por óxido de ítrioFatigueFlexural strengthHydrothermal degradationLow temperature agingSurface treatmentsZirconium oxide partially stabilized by yttriumCNPQ::CIENCIAS DA SAUDE::ODONTOLOGIAComportamento mecânico de uma cerâmica Y-TZP: efeito de tratamentos de superfície e técnicas de processamentoMechanical behavior of a Y-TZP ceramic: effect of surface treatments and processing technicsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisSoares, Luiz Felipe Valandrohttp://lattes.cnpq.br/0535309012233484Soares, Fabio Zovico Maxnuckhttp://lattes.cnpq.br/9161496362299849Cesar, Paulo Franciscohttp://lattes.cnpq.br/3000945612440374http://lattes.cnpq.br/6374121378990220Zucuni, Camila Pauleski400200000000600e224b638-4870-48ca-bbe8-49eca7986c1010c4222b-f1fc-4cc8-b175-00b145d378c1ac8aaeea-a9b6-4b98-bb2d-ef3e3844aa0de3d007a0-b6cd-42a7-b60e-6924f5a9500areponame:Biblioteca Digital de Teses e Dissertações do UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALDIS_PPGCO_2017_ZUCUNI_CAMILA.pdfDIS_PPGCO_2017_ZUCUNI_CAMILA.pdfDissertação de Mestradoapplication/pdf40560282http://repositorio.ufsm.br/bitstream/1/13725/1/DIS_PPGCO_2017_ZUCUNI_CAMILA.pdf467186dafec48a889afc46a69b97108fMD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; 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dc.title.por.fl_str_mv |
Comportamento mecânico de uma cerâmica Y-TZP: efeito de tratamentos de superfície e técnicas de processamento |
dc.title.alternative.eng.fl_str_mv |
Mechanical behavior of a Y-TZP ceramic: effect of surface treatments and processing technics |
title |
Comportamento mecânico de uma cerâmica Y-TZP: efeito de tratamentos de superfície e técnicas de processamento |
spellingShingle |
Comportamento mecânico de uma cerâmica Y-TZP: efeito de tratamentos de superfície e técnicas de processamento Zucuni, Camila Pauleski CAD/CAM Degradação hidrotérmica Envelhecimento em baixa temperatura Fadiga Resistência à flexão Tratamento de superfície Zircônia policristalina parcialmente estabilizada por óxido de ítrio Fatigue Flexural strength Hydrothermal degradation Low temperature aging Surface treatments Zirconium oxide partially stabilized by yttrium CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA |
title_short |
Comportamento mecânico de uma cerâmica Y-TZP: efeito de tratamentos de superfície e técnicas de processamento |
title_full |
Comportamento mecânico de uma cerâmica Y-TZP: efeito de tratamentos de superfície e técnicas de processamento |
title_fullStr |
Comportamento mecânico de uma cerâmica Y-TZP: efeito de tratamentos de superfície e técnicas de processamento |
title_full_unstemmed |
Comportamento mecânico de uma cerâmica Y-TZP: efeito de tratamentos de superfície e técnicas de processamento |
title_sort |
Comportamento mecânico de uma cerâmica Y-TZP: efeito de tratamentos de superfície e técnicas de processamento |
author |
Zucuni, Camila Pauleski |
author_facet |
Zucuni, Camila Pauleski |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Soares, Luiz Felipe Valandro |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/0535309012233484 |
dc.contributor.referee1.fl_str_mv |
Soares, Fabio Zovico Maxnuck |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/9161496362299849 |
dc.contributor.referee2.fl_str_mv |
Cesar, Paulo Francisco |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/3000945612440374 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/6374121378990220 |
dc.contributor.author.fl_str_mv |
Zucuni, Camila Pauleski |
contributor_str_mv |
Soares, Luiz Felipe Valandro Soares, Fabio Zovico Maxnuck Cesar, Paulo Francisco |
dc.subject.por.fl_str_mv |
CAD/CAM Degradação hidrotérmica Envelhecimento em baixa temperatura Fadiga Resistência à flexão Tratamento de superfície Zircônia policristalina parcialmente estabilizada por óxido de ítrio |
topic |
CAD/CAM Degradação hidrotérmica Envelhecimento em baixa temperatura Fadiga Resistência à flexão Tratamento de superfície Zircônia policristalina parcialmente estabilizada por óxido de ítrio Fatigue Flexural strength Hydrothermal degradation Low temperature aging Surface treatments Zirconium oxide partially stabilized by yttrium CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA |
dc.subject.eng.fl_str_mv |
Fatigue Flexural strength Hydrothermal degradation Low temperature aging Surface treatments Zirconium oxide partially stabilized by yttrium |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA |
description |
This study is composed by three studies with respective goals: 1st study- to evaluate the effect of post-processing surface treatments (polishing, heat treatment/annealing and glazing), associated or not with autoclave aging (LTD– Low Temperature Degradation) on the surface micro-morphology, phase transformation (t-m) and mechanical behavior (flexural strength and structural reliability) of a Y-TZP ceramic; 2nd study- to evaluate the effect of postprocessing surface treatments and associations (polishing, heat treatment, glazing, polishing + heat treatment and polishing + glazing) on the surface micro-morphology, phase transformation (t-m) and fatigue behavior of Y-TZP ceramic; 3rd study- to evaluate the effect of different pre-sintering fabrication processing techniques (CAD/CAM milling x in-lab fabrication processing techniques) on the outcomes aforementioned. For three studies, discs of Y-TZP ceramic were manufactured according to ISO: 6872-2008. To the first study, the specimens were divided into 10 groups according to the aging (with or without) and surface treatment (Ctrl; “as-sintered”; Ctrl + Aut: ‘as-sintered” + aging; Gr: ground with diamond bur; Gr + Aut: ground with diamond bur + aging; Gr + HT: ground with diamond bur + heat treatment; Gr + HT + Aut: ground with diamond bur + heat treatment+ aging; Gr + Pol: ground with diamond bur + polishing; Gr + Pol + Aut: ground with diamond bur + polishing + aging; Gr + Gl: ground with diamond bur + glazing; Gr + Gl + Aut: ground with diamond bur + glazing + aging. To the second study, the specimens were divided into 7 groups: Ctrl: “as-sintered”; Gr: ground; Gr + HT: ground and heat treatment; Gr + Pol: ground and polishing; Gr + Pol + HT: ground, polishing and heat treatment; Gr + Gl: ground and glazing; Gr + Pol + Gl: ground, polishing and glazing. To the third study, the specimens were divided into 5 groups: Polished: polishing group (conventional process); Machined: CAD/CAM milling; Fine, Xfine and SiC: fabrication using a cutting machine followed by grinding with diamond bur fine, xfine and 220-grit silicon carbide, respectively. All of the grinding procedures of the third study were performed before sintering. Regarding the first study, it observed that polishing generated higher characteristic strength than the other surface treatments and reduced the surface roughness. These findings corroborate to ones from the second study: the polishing promoted higher fatigue strength. According to the third study, the grinding with fine diamond burs (46μm) before sintering showed to be the best protocol to mimic the surface and the mechanical behavior of Y-TZP ceramic milled by CAD/CAM. |
publishDate |
2017 |
dc.date.issued.fl_str_mv |
2017-07-07 |
dc.date.accessioned.fl_str_mv |
2018-07-10T14:22:50Z |
dc.date.available.fl_str_mv |
2018-07-10T14:22:50Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/13725 |
url |
http://repositorio.ufsm.br/handle/1/13725 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.cnpq.fl_str_mv |
400200000000 |
dc.relation.confidence.fl_str_mv |
600 |
dc.relation.authority.fl_str_mv |
e224b638-4870-48ca-bbe8-49eca7986c10 10c4222b-f1fc-4cc8-b175-00b145d378c1 ac8aaeea-a9b6-4b98-bb2d-ef3e3844aa0d e3d007a0-b6cd-42a7-b60e-6924f5a9500a |
dc.rights.driver.fl_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências da Saúde |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Ciências Odontológicas |
dc.publisher.initials.fl_str_mv |
UFSM |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Odontologia |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências da Saúde |
dc.source.none.fl_str_mv |
reponame:Biblioteca Digital de Teses e Dissertações do UFSM instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Biblioteca Digital de Teses e Dissertações do UFSM |
collection |
Biblioteca Digital de Teses e Dissertações do UFSM |
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Biblioteca Digital de Teses e Dissertações do UFSM - Universidade Federal de Santa Maria (UFSM) |
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atendimento.sib@ufsm.br||tedebc@gmail.com |
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