Characterization of high-energy milled alumina powders

Detalhes bibliográficos
Autor(a) principal: Tomasi,Roberto
Data de Publicação: 1998
Outros Autores: Rabelo,Adriano A., Chinelatto,Adriana S. A., Reis,Laudo, Botta Fo,Walter J.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Cerâmica (São Paulo. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69131998000500003
Resumo: The utilization of reactive high-energy milling has been reported for the synthesis of ceramic powders namely, metal oxides, carbides, borides, nitrides or mixtures of ceramics or ceramic and metal compounds. In this work, high-energy milling was used for reduction of alumina powders to nanometric particle size. The ceramic characteristics of the powders were analyzed in terms of the behavior during deagglomeration, compaction curves, sintering and microstructure characterization. It was observed that the high energy milling has strong effect in producing agglomeration of the nanosized powders. This effect is explained by the high-energy impact of the balls, which may fracture particles or just cause the particles compacting. In this case, strong agglomerates are produced. As the powder surface area increases, stronger agglomerates are produced.
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spelling Characterization of high-energy milled alumina powdersaluminananometric particlehigh-energy millingThe utilization of reactive high-energy milling has been reported for the synthesis of ceramic powders namely, metal oxides, carbides, borides, nitrides or mixtures of ceramics or ceramic and metal compounds. In this work, high-energy milling was used for reduction of alumina powders to nanometric particle size. The ceramic characteristics of the powders were analyzed in terms of the behavior during deagglomeration, compaction curves, sintering and microstructure characterization. It was observed that the high energy milling has strong effect in producing agglomeration of the nanosized powders. This effect is explained by the high-energy impact of the balls, which may fracture particles or just cause the particles compacting. In this case, strong agglomerates are produced. As the powder surface area increases, stronger agglomerates are produced.Associação Brasileira de Cerâmica1998-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69131998000500003Cerâmica v.44 n.289 1998reponame:Cerâmica (São Paulo. Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S0366-69131998000500003info:eu-repo/semantics/openAccessTomasi,RobertoRabelo,Adriano A.Chinelatto,Adriana S. A.Reis,LaudoBotta Fo,Walter J.eng2000-06-12T00:00:00Zoai:scielo:S0366-69131998000500003Revistahttps://www.scielo.br/j/ce/PUBhttps://old.scielo.br/oai/scielo-oai.phpceram.abc@gmail.com||ceram.abc@gmail.com1678-45530366-6913opendoar:2000-06-12T00:00Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Characterization of high-energy milled alumina powders
title Characterization of high-energy milled alumina powders
spellingShingle Characterization of high-energy milled alumina powders
Tomasi,Roberto
alumina
nanometric particle
high-energy milling
title_short Characterization of high-energy milled alumina powders
title_full Characterization of high-energy milled alumina powders
title_fullStr Characterization of high-energy milled alumina powders
title_full_unstemmed Characterization of high-energy milled alumina powders
title_sort Characterization of high-energy milled alumina powders
author Tomasi,Roberto
author_facet Tomasi,Roberto
Rabelo,Adriano A.
Chinelatto,Adriana S. A.
Reis,Laudo
Botta Fo,Walter J.
author_role author
author2 Rabelo,Adriano A.
Chinelatto,Adriana S. A.
Reis,Laudo
Botta Fo,Walter J.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Tomasi,Roberto
Rabelo,Adriano A.
Chinelatto,Adriana S. A.
Reis,Laudo
Botta Fo,Walter J.
dc.subject.por.fl_str_mv alumina
nanometric particle
high-energy milling
topic alumina
nanometric particle
high-energy milling
description The utilization of reactive high-energy milling has been reported for the synthesis of ceramic powders namely, metal oxides, carbides, borides, nitrides or mixtures of ceramics or ceramic and metal compounds. In this work, high-energy milling was used for reduction of alumina powders to nanometric particle size. The ceramic characteristics of the powders were analyzed in terms of the behavior during deagglomeration, compaction curves, sintering and microstructure characterization. It was observed that the high energy milling has strong effect in producing agglomeration of the nanosized powders. This effect is explained by the high-energy impact of the balls, which may fracture particles or just cause the particles compacting. In this case, strong agglomerates are produced. As the powder surface area increases, stronger agglomerates are produced.
publishDate 1998
dc.date.none.fl_str_mv 1998-10-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69131998000500003
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69131998000500003
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0366-69131998000500003
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Associação Brasileira de Cerâmica
publisher.none.fl_str_mv Associação Brasileira de Cerâmica
dc.source.none.fl_str_mv Cerâmica v.44 n.289 1998
reponame:Cerâmica (São Paulo. Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Cerâmica (São Paulo. Online)
collection Cerâmica (São Paulo. Online)
repository.name.fl_str_mv Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv ceram.abc@gmail.com||ceram.abc@gmail.com
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