Crystallization kinetics and structure refinement of catio3 glass-ceramics produced by melt-quenching technique
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/1980-5373-MR-2021-0027 http://hdl.handle.net/11449/229345 |
Resumo: | Glass-ceramic materials were obtained by heat treatment (960°C for 2, 4, and 6 hs) of glasses with CaCO3 47.50 wt%-TiO2 23.75 wt%-SiO2 23.75-Al2O3 5.00 wt% formulation produced by the melt-quenching technique (melting at 1650°C and subsequent annealing at 650°C). The materials' structural characterization and crystallization kinetics (Kissinger method) indicate the presence of CaTiO3, CaSiO3, and CaTiSiO5 crystalline phases with activation energies 217, 281, and 446 kJ/mol, respectively. The structure refinement (Rietveld method) suggests metastability for the CaSiO3 and CaTiSiO5 phases as a function of the heat treatment time. The increase in time favors CaTiO3 crystallization, from 62.97 wt%, in the 2 hs treated sample, to 79.21 wt%, in the 6 hs treated sample. EDS and microstructure analyses confirm the glass-ceramic production and indicate segregation of the CaTiO3 phase for longer heat treatment times. |
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Crystallization kinetics and structure refinement of catio3 glass-ceramics produced by melt-quenching techniqueCaTiO3Glass-ceramicsKissinger MethodMelt-quenching TechniqueRietveld MethodGlass-ceramic materials were obtained by heat treatment (960°C for 2, 4, and 6 hs) of glasses with CaCO3 47.50 wt%-TiO2 23.75 wt%-SiO2 23.75-Al2O3 5.00 wt% formulation produced by the melt-quenching technique (melting at 1650°C and subsequent annealing at 650°C). The materials' structural characterization and crystallization kinetics (Kissinger method) indicate the presence of CaTiO3, CaSiO3, and CaTiSiO5 crystalline phases with activation energies 217, 281, and 446 kJ/mol, respectively. The structure refinement (Rietveld method) suggests metastability for the CaSiO3 and CaTiSiO5 phases as a function of the heat treatment time. The increase in time favors CaTiO3 crystallization, from 62.97 wt%, in the 2 hs treated sample, to 79.21 wt%, in the 6 hs treated sample. EDS and microstructure analyses confirm the glass-ceramic production and indicate segregation of the CaTiO3 phase for longer heat treatment times.Universidade Estadual Paulista (UNESP) Faculdade de Ciências e Tecnologia Departamento de FísicaUniversidade Estadual Paulista (UNESP) Faculdade de Ciências Departamento de QuímicaUniversidade Estadual Paulista (UNESP) Faculdade de Ciências e Tecnologia Departamento de FísicaUniversidade Estadual Paulista (UNESP) Faculdade de Ciências Departamento de QuímicaUniversidade Estadual Paulista (UNESP)Da Silveira, Wagner [UNESP]Macedo, Wagner Costa [UNESP]De Almeida Santos, Gleyson Tadeu [UNESP]Dos Santos, Luis Fernando [UNESP]Fernandes, José Diego [UNESP]De Oliveira Rocha, Kleper [UNESP]Teixeira, Silvio Rainho [UNESP]2022-04-29T08:32:04Z2022-04-29T08:32:04Z2021-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1590/1980-5373-MR-2021-0027Materials Research, v. 24.1980-53731516-1439http://hdl.handle.net/11449/22934510.1590/1980-5373-MR-2021-00272-s2.0-85112675964Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Researchinfo:eu-repo/semantics/openAccess2024-06-19T12:44:06Zoai:repositorio.unesp.br:11449/229345Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-06T00:03:12.568275Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Crystallization kinetics and structure refinement of catio3 glass-ceramics produced by melt-quenching technique |
title |
Crystallization kinetics and structure refinement of catio3 glass-ceramics produced by melt-quenching technique |
spellingShingle |
Crystallization kinetics and structure refinement of catio3 glass-ceramics produced by melt-quenching technique Da Silveira, Wagner [UNESP] CaTiO3 Glass-ceramics Kissinger Method Melt-quenching Technique Rietveld Method |
title_short |
Crystallization kinetics and structure refinement of catio3 glass-ceramics produced by melt-quenching technique |
title_full |
Crystallization kinetics and structure refinement of catio3 glass-ceramics produced by melt-quenching technique |
title_fullStr |
Crystallization kinetics and structure refinement of catio3 glass-ceramics produced by melt-quenching technique |
title_full_unstemmed |
Crystallization kinetics and structure refinement of catio3 glass-ceramics produced by melt-quenching technique |
title_sort |
Crystallization kinetics and structure refinement of catio3 glass-ceramics produced by melt-quenching technique |
author |
Da Silveira, Wagner [UNESP] |
author_facet |
Da Silveira, Wagner [UNESP] Macedo, Wagner Costa [UNESP] De Almeida Santos, Gleyson Tadeu [UNESP] Dos Santos, Luis Fernando [UNESP] Fernandes, José Diego [UNESP] De Oliveira Rocha, Kleper [UNESP] Teixeira, Silvio Rainho [UNESP] |
author_role |
author |
author2 |
Macedo, Wagner Costa [UNESP] De Almeida Santos, Gleyson Tadeu [UNESP] Dos Santos, Luis Fernando [UNESP] Fernandes, José Diego [UNESP] De Oliveira Rocha, Kleper [UNESP] Teixeira, Silvio Rainho [UNESP] |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Da Silveira, Wagner [UNESP] Macedo, Wagner Costa [UNESP] De Almeida Santos, Gleyson Tadeu [UNESP] Dos Santos, Luis Fernando [UNESP] Fernandes, José Diego [UNESP] De Oliveira Rocha, Kleper [UNESP] Teixeira, Silvio Rainho [UNESP] |
dc.subject.por.fl_str_mv |
CaTiO3 Glass-ceramics Kissinger Method Melt-quenching Technique Rietveld Method |
topic |
CaTiO3 Glass-ceramics Kissinger Method Melt-quenching Technique Rietveld Method |
description |
Glass-ceramic materials were obtained by heat treatment (960°C for 2, 4, and 6 hs) of glasses with CaCO3 47.50 wt%-TiO2 23.75 wt%-SiO2 23.75-Al2O3 5.00 wt% formulation produced by the melt-quenching technique (melting at 1650°C and subsequent annealing at 650°C). The materials' structural characterization and crystallization kinetics (Kissinger method) indicate the presence of CaTiO3, CaSiO3, and CaTiSiO5 crystalline phases with activation energies 217, 281, and 446 kJ/mol, respectively. The structure refinement (Rietveld method) suggests metastability for the CaSiO3 and CaTiSiO5 phases as a function of the heat treatment time. The increase in time favors CaTiO3 crystallization, from 62.97 wt%, in the 2 hs treated sample, to 79.21 wt%, in the 6 hs treated sample. EDS and microstructure analyses confirm the glass-ceramic production and indicate segregation of the CaTiO3 phase for longer heat treatment times. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-01-01 2022-04-29T08:32:04Z 2022-04-29T08:32:04Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/1980-5373-MR-2021-0027 Materials Research, v. 24. 1980-5373 1516-1439 http://hdl.handle.net/11449/229345 10.1590/1980-5373-MR-2021-0027 2-s2.0-85112675964 |
url |
http://dx.doi.org/10.1590/1980-5373-MR-2021-0027 http://hdl.handle.net/11449/229345 |
identifier_str_mv |
Materials Research, v. 24. 1980-5373 1516-1439 10.1590/1980-5373-MR-2021-0027 2-s2.0-85112675964 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Materials Research |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129577403285504 |