The roles of microstructure and surface energy on subcritical crack growth in glass-ceramics

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorAeronautics Technological Institute (ITA)-
Autor(es): dc.contributorState University of Maringá-
Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.contributorSão Francisco University (USF)-
Autor(es): dc.creatorRicco, Pamela [UNESP]-
Autor(es): dc.creatorde Carvalho Ramos, Nathália [UNESP]-
Autor(es): dc.creatorBastos Campos, Tiago Moreira-
Autor(es): dc.creatorSoares, Viviane Oliveira-
Autor(es): dc.creatorde Oliveira Carlos Villas Boas, Mariana-
Autor(es): dc.creatorMarques de Melo, Renata [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:48:27Z-
Data de disponibilização: dc.date.available2022-02-22T00:48:27Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-03-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.ceramint.2020.11.025-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/206865-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/206865-
Descrição: dc.descriptionThis study aimed to investigate the microstructure, failure probabilities, the susceptibility to subcritical crack growth (SCG), and the surface energy of two comercial brands IPS E.max CAD, Ivoclar Vivadent (LD-C) and Celtra DUO, Dentsply (LS-C) and experimental lithium disilicate (LD-E) and metasilicate (LM-E) glass-ceramics. Discs of each material were made to determine the subcritical crack growth parameters and the biaxial flexural strength (ISO 6872). The stresses to failure (MPa) were submitted to Weibull's analysis (CI 95%). The SCG was tested in water at five constant stress rates: 0.005; 0.05; 0.5; 5 and 50 MPa/s. By measuring the contact angles of water and diiodomethane on the glass-ceramics, we calculated the surface energy (mN/m). The characteristic strengths (MPa) and the Weibull moduli were 382.8 ± 8.3 and 10.1 ± 1.5, 148.5 ± 4.0 and 8.4 ± 0.8, 233.5 ± 10.4 and 5 ± 0.6, and 280.4 ± 9.1 and 6.8 ± 0.9 for LD-C, LS-C, LD-E and LM-E, respectively. The parameter of susceptibility to SCG (n) was: LD-C (18.2 ± 2.5), LS-C (25.6 ± 5.8), LD-E (23.2 ± 8.1), and the LM-E (15.1 ± 2.1). The polar and dispersive energy of LD-C was (~45) and (~26) respectively. The microstructures show that the commercial glass-ceramics are more refined and uniform than the experimental ones, which led to less strength variation. The stress corrosion cracking of the glass-ceramics, mainly LD-C, seemed to be a combination of the surface energy and microstructural features.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionDepartment of Dental Materials and Prosthodontics São Paulo State University (UNESP) Institute of Science and Technology, 777 Eng. Francisco José Longo Avenue, São José dos Campos-
Descrição: dc.descriptionAeronautics Technological Institute (ITA), 50 Marechal Eduardo Gomes Square-
Descrição: dc.descriptionDepartment of Sciences State University of Maringá, Reitor Zeferino Vaz Avenue-
Descrição: dc.descriptionDepartment of Materials Engineering (DEMa) Center for Research Technology and Education in Vitreous Materials (CeRTEV) Federal University of São Carlos (UFSCar)-
Descrição: dc.descriptionCollege of Dentistry São Francisco University (USF), 218 São Francisco de Assis Avenue-
Descrição: dc.descriptionDepartment of Dental Materials and Prosthodontics São Paulo State University (UNESP) Institute of Science and Technology, 777 Eng. Francisco José Longo Avenue, São José dos Campos-
Descrição: dc.descriptionCAPES: 001-
Descrição: dc.descriptionCNPq: 104429/2019-4-
Descrição: dc.descriptionCNPq: 156600/2018-8-
Descrição: dc.descriptionFAPESP: 2013/07793-6-
Formato: dc.format6827-6833-
Idioma: dc.languageen-
Relação: dc.relationCeramics International-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCeramic-
Palavras-chave: dc.subjectCrack-
Palavras-chave: dc.subjectFracture-
Título: dc.titleThe roles of microstructure and surface energy on subcritical crack growth in glass-ceramics-
Tipo de arquivo: dc.typelivro digital-
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