Reducing atmosphere to manufacture graphene alumina composite

Detalhes bibliográficos
Autor(a) principal: Barbosa Pereira, Cristian Guilherme [UNESP]
Data de Publicação: 2022
Outros Autores: Faglioni, Felipe Dias [UNESP], Neto, Vicente Gerlin [UNESP], Fortulan, Carlos Alberto, Gelamo, Rogério Valentim, Foschini, Cesar Renato [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.ceramint.2022.02.270
http://hdl.handle.net/11449/234222
Resumo: The so-called advanced ceramics or engineering ceramics attract various industrial sectors on account of characteristics such as high hardness, biocompatibility, thermal stability, chemical inertia, and corrosion resistance. However, its use ends up being limited by its fragility. The use of carbon allotropes (graphene, nanotubes, and fullerenes) as reinforcement material in ceramics has been widely studied; however, the performance of these allotropes is restricted to specific mixing and sintering conditions. The present work produced a composite material with an Al2O3 (alumina) matrix from commercially available techniques such as conventional sintering and achieved mechanical properties as good as those of composites produced by modern laboratory techniques such as Spark Plasma Sintering. Alumina powders were mixed with multi-layered graphene (MLG) on a ball mill, followed by uniaxial and isostatic pressing and sintered in a reducing atmosphere. The pure alumina ceramic was compared to the alumina-MLG composite, and a 75% increase in microhardness and 40% increase in fracture toughness for the composition with 0.75 wt% of multi-layered graphene was measured. Results showed that alumina-MLG composite can be produced through the conventional mixture and sintering methods, maintaining its properties on par with more modern techniques.
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spelling Reducing atmosphere to manufacture graphene alumina compositeAluminaMechanical propertiesMulti-layered grapheneReducing atmosphereThe so-called advanced ceramics or engineering ceramics attract various industrial sectors on account of characteristics such as high hardness, biocompatibility, thermal stability, chemical inertia, and corrosion resistance. However, its use ends up being limited by its fragility. The use of carbon allotropes (graphene, nanotubes, and fullerenes) as reinforcement material in ceramics has been widely studied; however, the performance of these allotropes is restricted to specific mixing and sintering conditions. The present work produced a composite material with an Al2O3 (alumina) matrix from commercially available techniques such as conventional sintering and achieved mechanical properties as good as those of composites produced by modern laboratory techniques such as Spark Plasma Sintering. Alumina powders were mixed with multi-layered graphene (MLG) on a ball mill, followed by uniaxial and isostatic pressing and sintered in a reducing atmosphere. The pure alumina ceramic was compared to the alumina-MLG composite, and a 75% increase in microhardness and 40% increase in fracture toughness for the composition with 0.75 wt% of multi-layered graphene was measured. Results showed that alumina-MLG composite can be produced through the conventional mixture and sintering methods, maintaining its properties on par with more modern techniques.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)São Paulo State University – UNESP, Eng., Luis Edmundo Carrijo Coube Ave., BauruFederal Institute of Education Science and Technology of São Paulo – IFSP, Pedro Cavalo St., 709, BiriguiUniversity of São Paulo – USP, Trabalhador São Carlense Ave., 400, São CarlosFederal University of Triângulo Mineiro – UFTM, Dr. Randolfo Borges Júnior Ave., MGSão Paulo State University – UNESP, Eng., Luis Edmundo Carrijo Coube Ave., BauruUniversidade Estadual Paulista (UNESP)Science and Technology of São Paulo – IFSPUniversidade de São Paulo (USP)Federal University of Triângulo Mineiro – UFTMBarbosa Pereira, Cristian Guilherme [UNESP]Faglioni, Felipe Dias [UNESP]Neto, Vicente Gerlin [UNESP]Fortulan, Carlos AlbertoGelamo, Rogério ValentimFoschini, Cesar Renato [UNESP]2022-05-01T15:13:32Z2022-05-01T15:13:32Z2022-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.ceramint.2022.02.270Ceramics International.0272-8842http://hdl.handle.net/11449/23422210.1016/j.ceramint.2022.02.2702-s2.0-85125678060Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengCeramics Internationalinfo:eu-repo/semantics/openAccess2024-06-28T13:54:59Zoai:repositorio.unesp.br:11449/234222Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:32:02.899553Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Reducing atmosphere to manufacture graphene alumina composite
title Reducing atmosphere to manufacture graphene alumina composite
spellingShingle Reducing atmosphere to manufacture graphene alumina composite
Barbosa Pereira, Cristian Guilherme [UNESP]
Alumina
Mechanical properties
Multi-layered graphene
Reducing atmosphere
title_short Reducing atmosphere to manufacture graphene alumina composite
title_full Reducing atmosphere to manufacture graphene alumina composite
title_fullStr Reducing atmosphere to manufacture graphene alumina composite
title_full_unstemmed Reducing atmosphere to manufacture graphene alumina composite
title_sort Reducing atmosphere to manufacture graphene alumina composite
author Barbosa Pereira, Cristian Guilherme [UNESP]
author_facet Barbosa Pereira, Cristian Guilherme [UNESP]
Faglioni, Felipe Dias [UNESP]
Neto, Vicente Gerlin [UNESP]
Fortulan, Carlos Alberto
Gelamo, Rogério Valentim
Foschini, Cesar Renato [UNESP]
author_role author
author2 Faglioni, Felipe Dias [UNESP]
Neto, Vicente Gerlin [UNESP]
Fortulan, Carlos Alberto
Gelamo, Rogério Valentim
Foschini, Cesar Renato [UNESP]
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
Science and Technology of São Paulo – IFSP
Universidade de São Paulo (USP)
Federal University of Triângulo Mineiro – UFTM
dc.contributor.author.fl_str_mv Barbosa Pereira, Cristian Guilherme [UNESP]
Faglioni, Felipe Dias [UNESP]
Neto, Vicente Gerlin [UNESP]
Fortulan, Carlos Alberto
Gelamo, Rogério Valentim
Foschini, Cesar Renato [UNESP]
dc.subject.por.fl_str_mv Alumina
Mechanical properties
Multi-layered graphene
Reducing atmosphere
topic Alumina
Mechanical properties
Multi-layered graphene
Reducing atmosphere
description The so-called advanced ceramics or engineering ceramics attract various industrial sectors on account of characteristics such as high hardness, biocompatibility, thermal stability, chemical inertia, and corrosion resistance. However, its use ends up being limited by its fragility. The use of carbon allotropes (graphene, nanotubes, and fullerenes) as reinforcement material in ceramics has been widely studied; however, the performance of these allotropes is restricted to specific mixing and sintering conditions. The present work produced a composite material with an Al2O3 (alumina) matrix from commercially available techniques such as conventional sintering and achieved mechanical properties as good as those of composites produced by modern laboratory techniques such as Spark Plasma Sintering. Alumina powders were mixed with multi-layered graphene (MLG) on a ball mill, followed by uniaxial and isostatic pressing and sintered in a reducing atmosphere. The pure alumina ceramic was compared to the alumina-MLG composite, and a 75% increase in microhardness and 40% increase in fracture toughness for the composition with 0.75 wt% of multi-layered graphene was measured. Results showed that alumina-MLG composite can be produced through the conventional mixture and sintering methods, maintaining its properties on par with more modern techniques.
publishDate 2022
dc.date.none.fl_str_mv 2022-05-01T15:13:32Z
2022-05-01T15:13:32Z
2022-01-01
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/10.1016/j.ceramint.2022.02.270
Ceramics International.
0272-8842
http://hdl.handle.net/11449/234222
10.1016/j.ceramint.2022.02.270
2-s2.0-85125678060
url http://dx.doi.org/10.1016/j.ceramint.2022.02.270
http://hdl.handle.net/11449/234222
identifier_str_mv Ceramics International.
0272-8842
10.1016/j.ceramint.2022.02.270
2-s2.0-85125678060
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Ceramics International
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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