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dc.contributor.author
Abdala, Paula Macarena
dc.contributor.author
Lamas, Diego Germán
dc.contributor.author
Fantini, Márcia C..A.
dc.contributor.author
Craievich, Aldo F.
dc.date.available
2024-08-14T11:27:11Z
dc.date.issued
2010-04
dc.identifier.citation
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
dc.identifier.issn
0925-8388
dc.identifier.uri
http://hdl.handle.net/11336/242474
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science SA
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Nanocrystalline powders
dc.subject
ZrO2-Sc2O3
dc.subject
Metastable phases
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Synchrotron X-ray powder diffractions
dc.subject.classification
Nano-materiales
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Nanotecnología
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INGENIERÍAS Y TECNOLOGÍAS
dc.title
Retention at room temperature of the tetragonal t″-form in Sc2O3-doped ZrO2 nanopowders
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-08-12T14:01:58Z
dc.journal.volume
495
dc.journal.number
2
dc.journal.pagination
561-564
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Abdala, Paula Macarena. Instituto de Investigaciones Científicas y Técnicas de las Fuerzas Armadas; Argentina
dc.description.fil
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
dc.description.fil
Fil: Fantini, Márcia C..A.. Universidade de Sao Paulo; Brasil
dc.description.fil
Fil: Craievich, Aldo F.. Universidade de Sao Paulo; Brasil
dc.journal.title
Journal of Alloys and Compounds
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S092583880901651X
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jallcom.2009.08.083
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