Nanoscale physico-mechanical properties of an aging resistant ZTA composite

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorNew York University College of Dentistry-
Autor(es): dc.contributorNYU Langone Medical Center-
Autor(es): dc.contributorNYU Tandon School of Engineering-
Autor(es): dc.contributorInstitute of Research in Nuclear Energy-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorSchool of Dentistry Niteroi-
Autor(es): dc.contributorTechnological Institute of Aeronautics (ITA)-
Autor(es): dc.contributorMcMaster University-
Autor(es): dc.creatorBenalcázar Jalkh, E. B.-
Autor(es): dc.creatorCoelho, P. G.-
Autor(es): dc.creatorWitek, L.-
Autor(es): dc.creatorBergamo, E. T.P.-
Autor(es): dc.creatorLopes, A. C.O.-
Autor(es): dc.creatorMonteiro, K. N.-
Autor(es): dc.creatorCesar, P. F.-
Autor(es): dc.creatorGenova, L. A.-
Autor(es): dc.creatorLisboa-Filho, P. N. [UNESP]-
Autor(es): dc.creatorAbreu, J. L.B.-
Autor(es): dc.creatorCampos, T. M.B.-
Autor(es): dc.creatorCanteenwala, A.-
Autor(es): dc.creatorBonfante, E. A.-
Data de aceite: dc.date.accessioned2022-08-04T22:11:49Z-
Data de disponibilização: dc.date.available2022-08-04T22:11:49Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2021-10-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.jmbbm.2021.104690-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/222220-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/222220-
Descrição: dc.descriptionObjective: To characterize the effects of aging on the nanomechanical properties and 3D surface topographical parameters of an experimental Zirconia Toughened Alumina (ZTA) composite compared to its respective individual counterpart materials. Methods: Disk-shaped specimens comprised of three material groups were processed: 1) ZTA 70/30 (70% alumina reinforced with 30% second-generation 3Y-TZP); 2) Zpex (Second-generation 3Y-TZP), and; 3) Al2O3 (High purity Alumina) (n = 10/material, 12 × 1 mm). After synthesis, ceramic powders were pressed, the green-body samples were sintered and polished. Nanoindentation testing was performed to record elastic modulus (E) and hardness (H). Interferometry was utilized to assess 3D surface roughness parameters (Sa, Sq), while X-ray diffraction (XRD) and scanning electron microscope (SEM) assessed the crystalline content and microstructure. All tests were performed before and after simulated aging (134°C, 2.2 bar, 20 h). Statistical analyses were performed using linear mixed-model and least square difference pos-hoc tests (α = 5%). Results: XRD spectra indicated increase of monoclinic peaks for Zpex (~18%) relative to ZTA 70/30 (~2.5%) after aging. Additionally, aging did not affect the surface roughness parameters of ZTA 70/30 and Al2O3, although a significant increase in Sa was recorded for Zpex following aging (~90 nm) (p < 0.001). Al2O3 yielded the highest H and E values (H:21 GPa, E: 254 GPa), followed by ZTA 70/30 (H: 13 GPa, E: 214 GPa) and Zpex (H:11 GPa, E: 167 GPa), all significantly different (p < 0.03). Conclusion: ZTA 70/30 and Al2O3 presented high hydrothermal stability with respect to all evaluated variables, where artificial aging significantly increased the monoclinic content and surface roughness of Zpex.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionUniversidade Estadual de Maringá-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionDepartment of Prosthodontics and Periodontology University of São Paulo - Bauru School of Dentistry-
Descrição: dc.descriptionDepartment of Biomaterials New York University College of Dentistry-
Descrição: dc.descriptionHansjörg Wyss Department of Plastic Surgery NYU Langone Medical Center-
Descrição: dc.descriptionDepartment of Mechanical and Aerospace Engineering NYU Tandon School of Engineering-
Descrição: dc.descriptionDepartment of Biomedical Engineering NYU Tandon School of Engineering-
Descrição: dc.descriptionDepartment of Biomaterials and Oral Biology University of São Paulo School of Dentistry-
Descrição: dc.descriptionInstitute of Research in Nuclear Energy-
Descrição: dc.descriptionDepartment of Physics São Paulo State University-
Descrição: dc.descriptionAnalytical Laboratory of Restorative Biomaterials - LABiom-R Federal Fluminense University (UFF) School of Dentistry Niteroi-
Descrição: dc.descriptionTechnological Institute of Aeronautics (ITA)-
Descrição: dc.descriptionIntegrated Biomedical Engineering and Health Sciences McMaster University-
Descrição: dc.descriptionDepartment of Physics São Paulo State University-
Descrição: dc.descriptionFAPESP: 2012/19078-7-
Descrição: dc.descriptionUniversidade Estadual de Maringá: 2016/17793-1-
Descrição: dc.descriptionUniversidade Estadual de Maringá: 2016/18818-8-
Descrição: dc.descriptionUniversidade Estadual de Maringá: 2017/19362-0-
Descrição: dc.descriptionUniversidade Estadual de Maringá: 2018/03072-6-
Descrição: dc.descriptionUniversidade Estadual de Maringá: 2019/00452-5-
Descrição: dc.descriptionUniversidade Estadual de Maringá: 2019/08693-1-
Descrição: dc.descriptionCNPq: 304589/2017-9-
Descrição: dc.descriptionCNPq: 434487/2018-0-
Idioma: dc.languageen-
Relação: dc.relationJournal of the Mechanical Behavior of Biomedical Materials-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAlumina-
Palavras-chave: dc.subjectMechanical properties-
Palavras-chave: dc.subjectMicrostructure-
Palavras-chave: dc.subjectNanoindentation-
Palavras-chave: dc.subjectTopography-
Palavras-chave: dc.subjectZirconia-
Título: dc.titleNanoscale physico-mechanical properties of an aging resistant ZTA composite-
Tipo de arquivo: dc.typelivro digital-
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