Synthesis of stabilized zirconia without dopants
Autor(a) principal: | |
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Data de Publicação: | 2008 |
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=S0366-69132008000200016 |
Resumo: | ZrO2-SiO2 powders were synthesized through Pechini's method starting with D4Vi, PMS and zirconium citrate. The complex polymer was decomposed to form different phases at high temperatures. During the resin decomposition, the phase transformation from monoclinic to tetragonal zirconia was detected by thermal analysis. The crystallization and the diffusion process of Si and Zr were analyzed by X-ray diffraction, XRD, scanning electron microscopy and microanalysis by EDS. Tetragonal zirconia at 1000 ºC, monoclinic zirconia at 1200 ºC and monoclinic zirconia with cristobalite silica from 1300 º to 1400 ºC were formed. From 1000 ºC to 1300 ºC a diffuse amorphous band was related to the silica phase. The mapping of Kα line of Zr and Si showed low diffusion of Si into the ZrO2 structure. The kinetics of crystallization formed macroparticles of silica and small particles of zirconia. A diffusion interface between SiO2 and ZrO2 to form ZrSiO4 phase was not observed, confirmed by XRD. |
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Cerâmica (São Paulo. Online) |
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Synthesis of stabilized zirconia without dopantsPechini methodzirconia stabilizationEDS microanalysisZrO2-SiO2 powders were synthesized through Pechini's method starting with D4Vi, PMS and zirconium citrate. The complex polymer was decomposed to form different phases at high temperatures. During the resin decomposition, the phase transformation from monoclinic to tetragonal zirconia was detected by thermal analysis. The crystallization and the diffusion process of Si and Zr were analyzed by X-ray diffraction, XRD, scanning electron microscopy and microanalysis by EDS. Tetragonal zirconia at 1000 ºC, monoclinic zirconia at 1200 ºC and monoclinic zirconia with cristobalite silica from 1300 º to 1400 ºC were formed. From 1000 ºC to 1300 ºC a diffuse amorphous band was related to the silica phase. The mapping of Kα line of Zr and Si showed low diffusion of Si into the ZrO2 structure. The kinetics of crystallization formed macroparticles of silica and small particles of zirconia. A diffusion interface between SiO2 and ZrO2 to form ZrSiO4 phase was not observed, confirmed by XRD.Associação Brasileira de Cerâmica2008-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132008000200016Cerâmica v.54 n.330 2008reponame:Cerâmica (São Paulo. Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S0366-69132008000200016info:eu-repo/semantics/openAccessPessoa,R. C.Cerqueira,M.Nasar,R. S.Yoshida,I. V. P.eng2008-08-14T00:00:00Zoai:scielo:S0366-69132008000200016Revistahttps://www.scielo.br/j/ce/PUBhttps://old.scielo.br/oai/scielo-oai.phpceram.abc@gmail.com||ceram.abc@gmail.com1678-45530366-6913opendoar:2008-08-14T00:00Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Synthesis of stabilized zirconia without dopants |
title |
Synthesis of stabilized zirconia without dopants |
spellingShingle |
Synthesis of stabilized zirconia without dopants Pessoa,R. C. Pechini method zirconia stabilization EDS microanalysis |
title_short |
Synthesis of stabilized zirconia without dopants |
title_full |
Synthesis of stabilized zirconia without dopants |
title_fullStr |
Synthesis of stabilized zirconia without dopants |
title_full_unstemmed |
Synthesis of stabilized zirconia without dopants |
title_sort |
Synthesis of stabilized zirconia without dopants |
author |
Pessoa,R. C. |
author_facet |
Pessoa,R. C. Cerqueira,M. Nasar,R. S. Yoshida,I. V. P. |
author_role |
author |
author2 |
Cerqueira,M. Nasar,R. S. Yoshida,I. V. P. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Pessoa,R. C. Cerqueira,M. Nasar,R. S. Yoshida,I. V. P. |
dc.subject.por.fl_str_mv |
Pechini method zirconia stabilization EDS microanalysis |
topic |
Pechini method zirconia stabilization EDS microanalysis |
description |
ZrO2-SiO2 powders were synthesized through Pechini's method starting with D4Vi, PMS and zirconium citrate. The complex polymer was decomposed to form different phases at high temperatures. During the resin decomposition, the phase transformation from monoclinic to tetragonal zirconia was detected by thermal analysis. The crystallization and the diffusion process of Si and Zr were analyzed by X-ray diffraction, XRD, scanning electron microscopy and microanalysis by EDS. Tetragonal zirconia at 1000 ºC, monoclinic zirconia at 1200 ºC and monoclinic zirconia with cristobalite silica from 1300 º to 1400 ºC were formed. From 1000 ºC to 1300 ºC a diffuse amorphous band was related to the silica phase. The mapping of Kα line of Zr and Si showed low diffusion of Si into the ZrO2 structure. The kinetics of crystallization formed macroparticles of silica and small particles of zirconia. A diffusion interface between SiO2 and ZrO2 to form ZrSiO4 phase was not observed, confirmed by XRD. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-06-01 |
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=S0366-69132008000200016 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132008000200016 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0366-69132008000200016 |
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.54 n.330 2008 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_ |
1748936781056704512 |