Wet processing and characterization of ZrO2/stainless steel composites: electrical and mechanical perfomance
Autor(a) principal: | |
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Data de Publicação: | 2001 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Materials research (São Carlos. Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392001000300013 |
Resumo: | Zirconia/stainless steel composites have been prepared by a wet processing method with metal volume concentration ranging from 15% to 30%. The composites were characterized by electrical and mechanical measurements. The dependence of the electrical properties of these composites with the metal concentration presents a percolative behaviour with a metal-insulator transition, in addition to an increment of the capacity in the neighbourhood of a critical volume concentration. This value was found to be f c = 0.285, which is much higher than the theoretical value for randomly dispersed 3D composites (f c = 0.16). It has been found that the incorporation of stainless steel particles to zirconia matrix, increases the toughness and decreases both the hardness and the flexural strength. The enhancement of toughness is attributed to a crack deflection mechanism as a consequence of a weak ZrO2/stainless steel interface. |
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Wet processing and characterization of ZrO2/stainless steel composites: electrical and mechanical perfomanceZirconia/stainless steel compositeswet-processingmechanical propertieselectrical propertiesZirconia/stainless steel composites have been prepared by a wet processing method with metal volume concentration ranging from 15% to 30%. The composites were characterized by electrical and mechanical measurements. The dependence of the electrical properties of these composites with the metal concentration presents a percolative behaviour with a metal-insulator transition, in addition to an increment of the capacity in the neighbourhood of a critical volume concentration. This value was found to be f c = 0.285, which is much higher than the theoretical value for randomly dispersed 3D composites (f c = 0.16). It has been found that the incorporation of stainless steel particles to zirconia matrix, increases the toughness and decreases both the hardness and the flexural strength. The enhancement of toughness is attributed to a crack deflection mechanism as a consequence of a weak ZrO2/stainless steel interface.ABM, ABC, ABPol2001-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392001000300013Materials Research v.4 n.3 2001reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392001000300013info:eu-repo/semantics/openAccessLópez-Esteban,S.Bartolomé,J.F.Pecharromán,C.Mello Castanho,S.R.H.Moya,J.S.eng2001-08-23T00:00:00Zoai:scielo:S1516-14392001000300013Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2001-08-23T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.none.fl_str_mv |
Wet processing and characterization of ZrO2/stainless steel composites: electrical and mechanical perfomance |
title |
Wet processing and characterization of ZrO2/stainless steel composites: electrical and mechanical perfomance |
spellingShingle |
Wet processing and characterization of ZrO2/stainless steel composites: electrical and mechanical perfomance López-Esteban,S. Zirconia/stainless steel composites wet-processing mechanical properties electrical properties |
title_short |
Wet processing and characterization of ZrO2/stainless steel composites: electrical and mechanical perfomance |
title_full |
Wet processing and characterization of ZrO2/stainless steel composites: electrical and mechanical perfomance |
title_fullStr |
Wet processing and characterization of ZrO2/stainless steel composites: electrical and mechanical perfomance |
title_full_unstemmed |
Wet processing and characterization of ZrO2/stainless steel composites: electrical and mechanical perfomance |
title_sort |
Wet processing and characterization of ZrO2/stainless steel composites: electrical and mechanical perfomance |
author |
López-Esteban,S. |
author_facet |
López-Esteban,S. Bartolomé,J.F. Pecharromán,C. Mello Castanho,S.R.H. Moya,J.S. |
author_role |
author |
author2 |
Bartolomé,J.F. Pecharromán,C. Mello Castanho,S.R.H. Moya,J.S. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
López-Esteban,S. Bartolomé,J.F. Pecharromán,C. Mello Castanho,S.R.H. Moya,J.S. |
dc.subject.por.fl_str_mv |
Zirconia/stainless steel composites wet-processing mechanical properties electrical properties |
topic |
Zirconia/stainless steel composites wet-processing mechanical properties electrical properties |
description |
Zirconia/stainless steel composites have been prepared by a wet processing method with metal volume concentration ranging from 15% to 30%. The composites were characterized by electrical and mechanical measurements. The dependence of the electrical properties of these composites with the metal concentration presents a percolative behaviour with a metal-insulator transition, in addition to an increment of the capacity in the neighbourhood of a critical volume concentration. This value was found to be f c = 0.285, which is much higher than the theoretical value for randomly dispersed 3D composites (f c = 0.16). It has been found that the incorporation of stainless steel particles to zirconia matrix, increases the toughness and decreases both the hardness and the flexural strength. The enhancement of toughness is attributed to a crack deflection mechanism as a consequence of a weak ZrO2/stainless steel interface. |
publishDate |
2001 |
dc.date.none.fl_str_mv |
2001-07-01 |
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=S1516-14392001000300013 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392001000300013 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1516-14392001000300013 |
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 |
ABM, ABC, ABPol |
publisher.none.fl_str_mv |
ABM, ABC, ABPol |
dc.source.none.fl_str_mv |
Materials Research v.4 n.3 2001 reponame:Materials research (São Carlos. Online) instname:Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL |
instname_str |
Universidade Federal de São Carlos (UFSCAR) |
instacron_str |
ABM ABC ABPOL |
institution |
ABM ABC ABPOL |
reponame_str |
Materials research (São Carlos. Online) |
collection |
Materials research (São Carlos. Online) |
repository.name.fl_str_mv |
Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR) |
repository.mail.fl_str_mv |
dedz@power.ufscar.br |
_version_ |
1754212656903880704 |