Characterization of high-energy milled alumina powders
Main Author: | |
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Publication Date: | 1998 |
Other Authors: | , , , |
Format: | Article |
Language: | eng |
Source: | Cerâmica (São Paulo. Online) |
Download full: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69131998000500003 |
Summary: | 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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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 |
_version_ |
1748936779401003008 |