Microstructure and Thermal Conductivity of Porous Al2 O3-ZrO2 Ceramics

Detalhes bibliográficos
Autor(a) principal: Delbrücke, Tiago
Data de Publicação: 2015
Outros Autores: Gouvêa, Rogério A., Raubach, Cristiane W., Longo, Elson [UNESP], Sousa, Vânia C., M.tebcheranic, Sergio, Kubaski, Evaldo T., Moreira, Mário L., Jurado, Jose R., Cava, Sergio
Tipo de documento: Artigo de conferência
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.4028/www.scientific.net/MSF.820.268
http://hdl.handle.net/11449/234162
Resumo: The improvement on the development of porous ceramic materials has leaded to new technologies in thermal insulation, for example, composite materials for better performance of pressure vessels in rocket engines. Within this context, the present work aims to evaluate the ability of a refractory ceramic base alumina/zirconia through the processes of co-precipitation and replica method in an organic fiber template. The green body was burnt-out and sintered at 1200-1600°C to obtain the continuous porous ceramic fibers. In the FEG-SEM analysis, an interconnected porous structure with small grains was observed. The crystalline phases were determined by X-ray diffraction and compared to micro-Raman results regarding the crystalline structure confirms that there present in the material zirconia is composed of more than one phase. Porosity was calculated through a mercury porosimeter as 77.9%, and the Laser Flash method gave a thermal conductivity value of 1.61 K W.m−1 .K−1 for the Al2 O3-ZrO2 fibers.
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spelling Microstructure and Thermal Conductivity of Porous Al2 O3-ZrO2 CeramicsAl2O3-ZrO2Porous ceramicReplica methodThermal propertiesThe improvement on the development of porous ceramic materials has leaded to new technologies in thermal insulation, for example, composite materials for better performance of pressure vessels in rocket engines. Within this context, the present work aims to evaluate the ability of a refractory ceramic base alumina/zirconia through the processes of co-precipitation and replica method in an organic fiber template. The green body was burnt-out and sintered at 1200-1600°C to obtain the continuous porous ceramic fibers. In the FEG-SEM analysis, an interconnected porous structure with small grains was observed. The crystalline phases were determined by X-ray diffraction and compared to micro-Raman results regarding the crystalline structure confirms that there present in the material zirconia is composed of more than one phase. Porosity was calculated through a mercury porosimeter as 77.9%, and the Laser Flash method gave a thermal conductivity value of 1.61 K W.m−1 .K−1 for the Al2 O3-ZrO2 fibers.Graduate Program in Science and Materials Engineering Technology Development Center Federal University of Pelotas, RSLaboratory of Biomaterials & Advanced Ceramics Federal University of Rio Grande do Sul, RSInterdisciplinary Laboratory of Ceramic Materials Ponta Grossa State University, PRNational Institute of Science and Technology of Materials in Nanotechnology Paulista State University, SPGlass Department Institute of Glass and CeramicInstitute of Physics and Mathematics Federal University of Pelotas, RSNational Institute of Science and Technology of Materials in Nanotechnology Paulista State University, SPFederal University of PelotasFederal University of Rio Grande do SulPonta Grossa State UniversityUniversidade Estadual Paulista (UNESP)Institute of Glass and CeramicDelbrücke, TiagoGouvêa, Rogério A.Raubach, Cristiane W.Longo, Elson [UNESP]Sousa, Vânia C.M.tebcheranic, SergioKubaski, Evaldo T.Moreira, Mário L.Jurado, Jose R.Cava, Sergio2022-05-01T13:57:25Z2022-05-01T13:57:25Z2015-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject268-273http://dx.doi.org/10.4028/www.scientific.net/MSF.820.268Materials Science Forum, v. 820 MSF, p. 268-273.1662-97520255-5476http://hdl.handle.net/11449/23416210.4028/www.scientific.net/MSF.820.2682-s2.0-85124900939Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Science Foruminfo:eu-repo/semantics/openAccess2022-05-01T13:57:25Zoai:repositorio.unesp.br:11449/234162Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:38:55.947956Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Microstructure and Thermal Conductivity of Porous Al2 O3-ZrO2 Ceramics
title Microstructure and Thermal Conductivity of Porous Al2 O3-ZrO2 Ceramics
spellingShingle Microstructure and Thermal Conductivity of Porous Al2 O3-ZrO2 Ceramics
Delbrücke, Tiago
Al2O3-ZrO2
Porous ceramic
Replica method
Thermal properties
title_short Microstructure and Thermal Conductivity of Porous Al2 O3-ZrO2 Ceramics
title_full Microstructure and Thermal Conductivity of Porous Al2 O3-ZrO2 Ceramics
title_fullStr Microstructure and Thermal Conductivity of Porous Al2 O3-ZrO2 Ceramics
title_full_unstemmed Microstructure and Thermal Conductivity of Porous Al2 O3-ZrO2 Ceramics
title_sort Microstructure and Thermal Conductivity of Porous Al2 O3-ZrO2 Ceramics
author Delbrücke, Tiago
author_facet Delbrücke, Tiago
Gouvêa, Rogério A.
Raubach, Cristiane W.
Longo, Elson [UNESP]
Sousa, Vânia C.
M.tebcheranic, Sergio
Kubaski, Evaldo T.
Moreira, Mário L.
Jurado, Jose R.
Cava, Sergio
author_role author
author2 Gouvêa, Rogério A.
Raubach, Cristiane W.
Longo, Elson [UNESP]
Sousa, Vânia C.
M.tebcheranic, Sergio
Kubaski, Evaldo T.
Moreira, Mário L.
Jurado, Jose R.
Cava, Sergio
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Federal University of Pelotas
Federal University of Rio Grande do Sul
Ponta Grossa State University
Universidade Estadual Paulista (UNESP)
Institute of Glass and Ceramic
dc.contributor.author.fl_str_mv Delbrücke, Tiago
Gouvêa, Rogério A.
Raubach, Cristiane W.
Longo, Elson [UNESP]
Sousa, Vânia C.
M.tebcheranic, Sergio
Kubaski, Evaldo T.
Moreira, Mário L.
Jurado, Jose R.
Cava, Sergio
dc.subject.por.fl_str_mv Al2O3-ZrO2
Porous ceramic
Replica method
Thermal properties
topic Al2O3-ZrO2
Porous ceramic
Replica method
Thermal properties
description The improvement on the development of porous ceramic materials has leaded to new technologies in thermal insulation, for example, composite materials for better performance of pressure vessels in rocket engines. Within this context, the present work aims to evaluate the ability of a refractory ceramic base alumina/zirconia through the processes of co-precipitation and replica method in an organic fiber template. The green body was burnt-out and sintered at 1200-1600°C to obtain the continuous porous ceramic fibers. In the FEG-SEM analysis, an interconnected porous structure with small grains was observed. The crystalline phases were determined by X-ray diffraction and compared to micro-Raman results regarding the crystalline structure confirms that there present in the material zirconia is composed of more than one phase. Porosity was calculated through a mercury porosimeter as 77.9%, and the Laser Flash method gave a thermal conductivity value of 1.61 K W.m−1 .K−1 for the Al2 O3-ZrO2 fibers.
publishDate 2015
dc.date.none.fl_str_mv 2015-01-01
2022-05-01T13:57:25Z
2022-05-01T13:57:25Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/conferenceObject
format conferenceObject
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.4028/www.scientific.net/MSF.820.268
Materials Science Forum, v. 820 MSF, p. 268-273.
1662-9752
0255-5476
http://hdl.handle.net/11449/234162
10.4028/www.scientific.net/MSF.820.268
2-s2.0-85124900939
url http://dx.doi.org/10.4028/www.scientific.net/MSF.820.268
http://hdl.handle.net/11449/234162
identifier_str_mv Materials Science Forum, v. 820 MSF, p. 268-273.
1662-9752
0255-5476
10.4028/www.scientific.net/MSF.820.268
2-s2.0-85124900939
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Materials Science Forum
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 268-273
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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