Liquid phase sintered SiC ceramics from starting materials of different grade
Autor(a) principal: | |
---|---|
Data de Publicação: | 2004 |
Outros Autores: | , , |
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=S0366-69132004000300014 |
Resumo: | Possibility of high performance ceramics manufactured from commercial SiC powder of technical grade has been shown. Sintering behavior and microstructure formation under conditions of liquid phase sintering (LPS) with oxynitride sintering aids (AlN-Y2O3) of three SiC-based compositions have been investigated. Two of the compositions were based on Alcoa 1000 SiC powder of technical grade, and the third one, which was used as a reference, was based on H.C. Starck UF-15 fine grade commercial powder. Milling process used for Alcoa 1000 SiC powder granulometry improvement has been investigated in detail, while chemical treatment of milled SiC powders has been used for pick-up impurities removal. Dilatometric experiments showed that SiC powder of technical grade after appropriate treatment exhibits sinterability comparable with the fine grade SiC. Microstructural investigations performed on sintered samples showed that the final microstructure of the Alcoa 1000 SiC based materials was practically identical with the H.C. Starck SiC based reference ones. Preliminary investigations of hardness and fracture toughness were carried out revealing excellent results for the materials produced from cheaper, nationally produced starting powder. |
id |
USP-29_105db8a2564b18485946668795d7980d |
---|---|
oai_identifier_str |
oai:scielo:S0366-69132004000300014 |
network_acronym_str |
USP-29 |
network_name_str |
Cerâmica (São Paulo. Online) |
repository_id_str |
|
spelling |
Liquid phase sintered SiC ceramics from starting materials of different gradesilicon carbideliquid phase sinteringcommercial powderPossibility of high performance ceramics manufactured from commercial SiC powder of technical grade has been shown. Sintering behavior and microstructure formation under conditions of liquid phase sintering (LPS) with oxynitride sintering aids (AlN-Y2O3) of three SiC-based compositions have been investigated. Two of the compositions were based on Alcoa 1000 SiC powder of technical grade, and the third one, which was used as a reference, was based on H.C. Starck UF-15 fine grade commercial powder. Milling process used for Alcoa 1000 SiC powder granulometry improvement has been investigated in detail, while chemical treatment of milled SiC powders has been used for pick-up impurities removal. Dilatometric experiments showed that SiC powder of technical grade after appropriate treatment exhibits sinterability comparable with the fine grade SiC. Microstructural investigations performed on sintered samples showed that the final microstructure of the Alcoa 1000 SiC based materials was practically identical with the H.C. Starck SiC based reference ones. Preliminary investigations of hardness and fracture toughness were carried out revealing excellent results for the materials produced from cheaper, nationally produced starting powder.Associação Brasileira de Cerâmica2004-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132004000300014Cerâmica v.50 n.315 2004reponame:Cerâmica (São Paulo. Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S0366-69132004000300014info:eu-repo/semantics/openAccessIzhevskyi,V. A.Genova,L. A.Bressiani,J. C.Bressiani,A. H. A.eng2004-11-10T00:00:00Zoai:scielo:S0366-69132004000300014Revistahttps://www.scielo.br/j/ce/PUBhttps://old.scielo.br/oai/scielo-oai.phpceram.abc@gmail.com||ceram.abc@gmail.com1678-45530366-6913opendoar:2004-11-10T00:00Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Liquid phase sintered SiC ceramics from starting materials of different grade |
title |
Liquid phase sintered SiC ceramics from starting materials of different grade |
spellingShingle |
Liquid phase sintered SiC ceramics from starting materials of different grade Izhevskyi,V. A. silicon carbide liquid phase sintering commercial powder |
title_short |
Liquid phase sintered SiC ceramics from starting materials of different grade |
title_full |
Liquid phase sintered SiC ceramics from starting materials of different grade |
title_fullStr |
Liquid phase sintered SiC ceramics from starting materials of different grade |
title_full_unstemmed |
Liquid phase sintered SiC ceramics from starting materials of different grade |
title_sort |
Liquid phase sintered SiC ceramics from starting materials of different grade |
author |
Izhevskyi,V. A. |
author_facet |
Izhevskyi,V. A. Genova,L. A. Bressiani,J. C. Bressiani,A. H. A. |
author_role |
author |
author2 |
Genova,L. A. Bressiani,J. C. Bressiani,A. H. A. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Izhevskyi,V. A. Genova,L. A. Bressiani,J. C. Bressiani,A. H. A. |
dc.subject.por.fl_str_mv |
silicon carbide liquid phase sintering commercial powder |
topic |
silicon carbide liquid phase sintering commercial powder |
description |
Possibility of high performance ceramics manufactured from commercial SiC powder of technical grade has been shown. Sintering behavior and microstructure formation under conditions of liquid phase sintering (LPS) with oxynitride sintering aids (AlN-Y2O3) of three SiC-based compositions have been investigated. Two of the compositions were based on Alcoa 1000 SiC powder of technical grade, and the third one, which was used as a reference, was based on H.C. Starck UF-15 fine grade commercial powder. Milling process used for Alcoa 1000 SiC powder granulometry improvement has been investigated in detail, while chemical treatment of milled SiC powders has been used for pick-up impurities removal. Dilatometric experiments showed that SiC powder of technical grade after appropriate treatment exhibits sinterability comparable with the fine grade SiC. Microstructural investigations performed on sintered samples showed that the final microstructure of the Alcoa 1000 SiC based materials was practically identical with the H.C. Starck SiC based reference ones. Preliminary investigations of hardness and fracture toughness were carried out revealing excellent results for the materials produced from cheaper, nationally produced starting powder. |
publishDate |
2004 |
dc.date.none.fl_str_mv |
2004-09-01 |
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=S0366-69132004000300014 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132004000300014 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0366-69132004000300014 |
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.50 n.315 2004 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_ |
1748936780216795136 |