Crystallization kinetics and structure refinement of catio3 glass-ceramics produced by melt-quenching technique

Detalhes bibliográficos
Autor(a) principal: Da Silveira, Wagner [UNESP]
Data de Publicação: 2021
Outros Autores: 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]
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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spelling 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
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