Retention at room temperature of the tetragonal t″-form in Sc2O3-doped ZrO2 nanopowders

Autores
Abdala, Paula Macarena; Lamas, Diego Germán; Fantini, Márcia C..A.; Craievich, Aldo F.
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Synchrotron X-ray powder diffraction was applied to the study of the effect of crystallite size on the crystal structure of ZrO2-10 mol% Sc2O3 nanopowders synthesized by a nitrate-lysine gel-combustion route. Nanopowders with different average crystallite sizes were obtained by calcination at several temperatures, ranging from 650 to 1200°C. The metastable t"-form of the tetragonal phase, exhibiting a cubic unit cell and tetragonal P42/nmc spatial symmetry, was retained at room temperature in fine nanocrystalline powders, completely avoiding the presence of the stable rhombohedral beta phase. Differently, this phase was identified in samples calcined at high temperatures and its content increased with increasing crystallite size. The critical maximum crystallite size for the retention of the mestastable t"-form resulted of about 35 nm.
Fil: Abdala, Paula Macarena. Instituto de Investigaciones Científicas y Técnicas de las Fuerzas Armadas; Argentina
Fil: Lamas, Diego Germán. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación. Centro Interdisciplinario de Metodología de las Ciencias Sociales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Fil: Fantini, Márcia C..A.. Universidade de Sao Paulo; Brasil
Fil: Craievich, Aldo F.. Universidade de Sao Paulo; Brasil
Materia
Nanocrystalline powders
ZrO2-Sc2O3
Metastable phases
Synchrotron X-ray powder diffractions
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/242474
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/242474
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Retention at room temperature of the tetragonal t″-form in Sc2O3-doped ZrO2 nanopowdersAbdala, Paula MacarenaLamas, Diego GermánFantini, Márcia C..A.Craievich, Aldo F.Nanocrystalline powdersZrO2-Sc2O3Metastable phasesSynchrotron X-ray powder diffractionshttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2Synchrotron X-ray powder diffraction was applied to the study of the effect of crystallite size on the crystal structure of ZrO2-10 mol% Sc2O3 nanopowders synthesized by a nitrate-lysine gel-combustion route. Nanopowders with different average crystallite sizes were obtained by calcination at several temperatures, ranging from 650 to 1200°C. The metastable t"-form of the tetragonal phase, exhibiting a cubic unit cell and tetragonal P42/nmc spatial symmetry, was retained at room temperature in fine nanocrystalline powders, completely avoiding the presence of the stable rhombohedral beta phase. Differently, this phase was identified in samples calcined at high temperatures and its content increased with increasing crystallite size. The critical maximum crystallite size for the retention of the mestastable t"-form resulted of about 35 nm.Fil: Abdala, Paula Macarena. Instituto de Investigaciones Científicas y Técnicas de las Fuerzas Armadas; ArgentinaFil: Lamas, Diego Germán. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación. Centro Interdisciplinario de Metodología de las Ciencias Sociales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Fantini, Márcia C..A.. Universidade de Sao Paulo; BrasilFil: Craievich, Aldo F.. Universidade de Sao Paulo; BrasilElsevier Science SA2010-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/242474Abdala, Paula Macarena; Lamas, Diego Germán; Fantini, Márcia C..A.; Craievich, Aldo F.; Retention at room temperature of the tetragonal t″-form in Sc2O3-doped ZrO2 nanopowders; Elsevier Science SA; Journal of Alloys and Compounds; 495; 2; 4-2010; 561-5640925-8388CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S092583880901651Xinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jallcom.2009.08.083info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-17T11:32:53Zoai:ri.conicet.gov.ar:11336/242474instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-17 11:32:53.41CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Retention at room temperature of the tetragonal t″-form in Sc2O3-doped ZrO2 nanopowders
title Retention at room temperature of the tetragonal t″-form in Sc2O3-doped ZrO2 nanopowders
spellingShingle Retention at room temperature of the tetragonal t″-form in Sc2O3-doped ZrO2 nanopowders
Abdala, Paula Macarena
Nanocrystalline powders
ZrO2-Sc2O3
Metastable phases
Synchrotron X-ray powder diffractions
title_short Retention at room temperature of the tetragonal t″-form in Sc2O3-doped ZrO2 nanopowders
title_full Retention at room temperature of the tetragonal t″-form in Sc2O3-doped ZrO2 nanopowders
title_fullStr Retention at room temperature of the tetragonal t″-form in Sc2O3-doped ZrO2 nanopowders
title_full_unstemmed Retention at room temperature of the tetragonal t″-form in Sc2O3-doped ZrO2 nanopowders
title_sort Retention at room temperature of the tetragonal t″-form in Sc2O3-doped ZrO2 nanopowders
dc.creator.none.fl_str_mv Abdala, Paula Macarena
Lamas, Diego Germán
Fantini, Márcia C..A.
Craievich, Aldo F.
author Abdala, Paula Macarena
author_facet Abdala, Paula Macarena
Lamas, Diego Germán
Fantini, Márcia C..A.
Craievich, Aldo F.
author_role author
author2 Lamas, Diego Germán
Fantini, Márcia C..A.
Craievich, Aldo F.
author2_role author
author
author
dc.subject.none.fl_str_mv Nanocrystalline powders
ZrO2-Sc2O3
Metastable phases
Synchrotron X-ray powder diffractions
topic Nanocrystalline powders
ZrO2-Sc2O3
Metastable phases
Synchrotron X-ray powder diffractions
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Synchrotron X-ray powder diffraction was applied to the study of the effect of crystallite size on the crystal structure of ZrO2-10 mol% Sc2O3 nanopowders synthesized by a nitrate-lysine gel-combustion route. Nanopowders with different average crystallite sizes were obtained by calcination at several temperatures, ranging from 650 to 1200°C. The metastable t"-form of the tetragonal phase, exhibiting a cubic unit cell and tetragonal P42/nmc spatial symmetry, was retained at room temperature in fine nanocrystalline powders, completely avoiding the presence of the stable rhombohedral beta phase. Differently, this phase was identified in samples calcined at high temperatures and its content increased with increasing crystallite size. The critical maximum crystallite size for the retention of the mestastable t"-form resulted of about 35 nm.
Fil: Abdala, Paula Macarena. Instituto de Investigaciones Científicas y Técnicas de las Fuerzas Armadas; Argentina
Fil: Lamas, Diego Germán. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación. Centro Interdisciplinario de Metodología de las Ciencias Sociales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Fil: Fantini, Márcia C..A.. Universidade de Sao Paulo; Brasil
Fil: Craievich, Aldo F.. Universidade de Sao Paulo; Brasil
description Synchrotron X-ray powder diffraction was applied to the study of the effect of crystallite size on the crystal structure of ZrO2-10 mol% Sc2O3 nanopowders synthesized by a nitrate-lysine gel-combustion route. Nanopowders with different average crystallite sizes were obtained by calcination at several temperatures, ranging from 650 to 1200°C. The metastable t"-form of the tetragonal phase, exhibiting a cubic unit cell and tetragonal P42/nmc spatial symmetry, was retained at room temperature in fine nanocrystalline powders, completely avoiding the presence of the stable rhombohedral beta phase. Differently, this phase was identified in samples calcined at high temperatures and its content increased with increasing crystallite size. The critical maximum crystallite size for the retention of the mestastable t"-form resulted of about 35 nm.
publishDate 2010
dc.date.none.fl_str_mv 2010-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/242474
Abdala, Paula Macarena; Lamas, Diego Germán; Fantini, Márcia C..A.; Craievich, Aldo F.; Retention at room temperature of the tetragonal t″-form in Sc2O3-doped ZrO2 nanopowders; Elsevier Science SA; Journal of Alloys and Compounds; 495; 2; 4-2010; 561-564
0925-8388
CONICET Digital
CONICET
url http://hdl.handle.net/11336/242474
identifier_str_mv Abdala, Paula Macarena; Lamas, Diego Germán; Fantini, Márcia C..A.; Craievich, Aldo F.; Retention at room temperature of the tetragonal t″-form in Sc2O3-doped ZrO2 nanopowders; Elsevier Science SA; Journal of Alloys and Compounds; 495; 2; 4-2010; 561-564
0925-8388
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S092583880901651X
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jallcom.2009.08.083
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science SA
publisher.none.fl_str_mv Elsevier Science SA
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.001348

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