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Properties of LZS/nanoAl2O3 glass-ceramic composites

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Properties of LZS/nanoAl2O3 glass-ceramic composites

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dc.contributor.author Arcaro, S. es_ES
dc.contributor.author Moreno, B. es_ES
dc.contributor.author Chinarro, E. es_ES
dc.contributor.author Salvador Moya, Mª Dolores es_ES
dc.contributor.author Borrell Tomás, María Amparo es_ES
dc.contributor.author Nieto, M.I. es_ES
dc.contributor.author Moreno, R. es_ES
dc.contributor.author Novaes de Oliveira, A.P. es_ES
dc.date.accessioned 2020-07-17T03:32:00Z
dc.date.available 2020-07-17T03:32:00Z
dc.date.issued 2017-07-05 es_ES
dc.identifier.issn 0925-8388 es_ES
dc.identifier.uri http://hdl.handle.net/10251/148182
dc.description.abstract [EN] The LZS glass-ceramic (19.58 Li2O center dot 11.10ZrO(2)center dot 69.32SiO(2)) have a high coefficient thermal expansion (CTE) which can be a limitation in some applications. The addition of alumina in a LZS glass-ceramic matrix is able to reduce the CTE significantly. This happens because of the alumina affinity with respect to lithium silicates to form beta-spodumene (LiAlSi2O6), a crystalline phase having a CTE nearly zero (0.9 x 10(-6) degrees C-1).In this work, (1-5 vol%) Al2O3 nanoparticles (13 nm) were added to a LZS (3.5 mu m) glass-ceramic matrix to prepare composites with the main goal of evaluation the influence of Al2O3 on their mechanical, thermal and electrical properties. Each composition was wet homogenized and then dried at 110 degrees C for 48 h for disaggregation. The composites, sintered at 900 degrees C for 30 min, with relative densities between 92% and 98%, showed zircon and beta-spodumene as main crystalline phases. The incorporation of increasing additions of nanosized alumina progressively decreases the final density. This makes the properties to slightly decrease, also. The Young's modulus significantly decreases from 111 to 78 GPa of hardness due to the exponential variation with porosity, but the changes of toughness and hardness are much lower. The electrical conductivity was maintained within +/- 10-7 S. cm(-1), and the dielectric constant ranged from 5 to 6 for all compositions. Thermal conductivity ranged around 4.2 to 3.5 W/mK. (C) 2017 Elsevier B.V. All rights reserved. es_ES
dc.description.sponsorship This work has been supported by CAPES in the frame of the International Cooperation Program Science without Borders for Special Visiting Researcher PVE (MEC/MCTI/CAPES/CNPq/FAPs/ No 71/2013), Project No A011/2013 (Brazil) and CNPq (National Council for Scientific and Technological Development, Brazil). This work has been also supported by Ministerio de Economia y Cornpetitividad and FEDER Funds under grant No MAT2016-67586-C3-R and grant ENE2013-49111-C2-1-R. A. Borrell acknowledges the MINECO for her Juan de la Cierva-Incorporacion contract (IJCI-2014-19839). es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation MINECO/MAT2015-67586-C3-R es_ES
dc.relation MINECO/ENE2013-49111-C2-1-R es_ES
dc.relation CAPES/71/2013 es_ES
dc.relation CAPES/A011/2013 es_ES
dc.relation MINISTERIO DE ECONOMIA INDUSTRIA Y COMPETITIVIDAD /IJCI-2014-19839 es_ES
dc.relation.ispartof Journal of Alloys and Compounds es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Composites es_ES
dc.subject Nanoalumina es_ES
dc.subject Glass-ceramics es_ES
dc.subject Properties es_ES
dc.subject.classification CIENCIA DE LOS MATERIALES E INGENIERIA METALURGICA es_ES
dc.title Properties of LZS/nanoAl2O3 glass-ceramic composites es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.jallcom.2017.03.299 es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Mecánica y de Materiales - Departament d'Enginyeria Mecànica i de Materials es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto de Tecnología de Materiales - Institut de Tecnologia de Materials es_ES
dc.description.bibliographicCitation Arcaro, S.; Moreno, B.; Chinarro, E.; Salvador Moya, MD.; Borrell Tomás, MA.; Nieto, M.; Moreno, R.... (2017). Properties of LZS/nanoAl2O3 glass-ceramic composites. Journal of Alloys and Compounds. 710:567-574. https://doi.org/10.1016/j.jallcom.2017.03.299 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.jallcom.2017.03.299 es_ES
dc.description.upvformatpinicio 567 es_ES
dc.description.upvformatpfin 574 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 710 es_ES
dc.relation.pasarela S\330949 es_ES
dc.contributor.funder European Regional Development Fund es_ES
dc.contributor.funder Ministerio de Economía y Competitividad es_ES
dc.contributor.funder MINISTERIO DE ECONOMIA INDUSTRIA Y COMPETITIVIDAD es_ES
dc.contributor.funder Coordenaçao de Aperfeiçoamento de Pessoal de Nível Superior, Brasil es_ES
dc.contributor.funder Conselho Nacional de Desenvolvimento Científico e Tecnológico, Brasil es_ES


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