Model for vickers microhardness prediction applied to SnO2 and TiO2 in the normal and high pressure phases

The Vickers microhardness of TiO2 is calculated using elastic properties obtained by first principles calculations combined with Discrete Elements Method (DEM). The calculation is carried out in rutile and cotunnite phases. It was found that rutile phase, has a microhardness of 8.6 GPa and 12.8 GP...

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Autores principales: Caravaca, María de los Ángeles, Kosteski, Luis Eduardo, Miño, Julio C., Barrios D’Ambra, Ricardo José Luis, Uberti, Bruno, Casali, Ricardo Antonio
Formato: Artículo
Lenguaje:Inglés
Publicado: Elsevier 2021
Materias:
Microhardness
Toughness ceramics
Elastic constants
Acceso en línea:http://repositorio.unne.edu.ar/handle/123456789/28487
Aporte de:
RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) de Universidad Nacional del Nordeste
id I48-R184-123456789-28487
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spelling I48-R184-123456789-284872023-08-10T11:25:16Z Model for vickers microhardness prediction applied to SnO2 and TiO2 in the normal and high pressure phases Caravaca, María de los Ángeles Kosteski, Luis Eduardo Miño, Julio C. Barrios D’Ambra, Ricardo José Luis Uberti, Bruno Casali, Ricardo Antonio Microhardness Toughness ceramics Elastic constants The Vickers microhardness of TiO2 is calculated using elastic properties obtained by first principles calculations combined with Discrete Elements Method (DEM). The calculation is carried out in rutile and cotunnite phases. It was found that rutile phase, has a microhardness of 8.6 GPa and 12.8 GPa for the failure and fracture modes in agreement with experimental results range. In cotunnite phase the hardness for failure and fracture mode are 24.1 and 24.4 GPa, close to 26 GPa, applying Simunek model. To give insight to this methodology, the calculation is extended to SnO2 in the normal phase. The microhardness value obtained in the failure mode is 2.67 GPa. The method developed here, to obtain the Vickers microhardness, could be applied to a systematic study of tailoring materials. Since hardness is related to elastic shear properties, our results can be used as an assessment of the material properties as solid lubricating at first order. © 2014 Elsevier Ltd. All rights reserved. 2021-08-26T13:26:57Z 2021-08-26T13:26:57Z 2014-06-14 Artículo Caravaca, María de los Ángeles. et al., 2014. Model for Vickers microhardness prediction applied to SnO2 and TiO2 in the normal and high pressure phases. Journal of the European Ceramic Society. Manchester: Elsevier, vol. 34, no. 15, p. 3791-3800. ISSN 1873-619X. 0955-2219 http://repositorio.unne.edu.ar/handle/123456789/28487 eng openAccess http://creativecommons.org/licenses/by-nc-nd/2.5/ar/ application/pdf application/pdf Elsevier Journal of the European Ceramic Society, 2014, vol. 34, no. 15, p. 3791-3800.
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-184
collection RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
language Inglés
topic Microhardness
Toughness ceramics
Elastic constants
spellingShingle Microhardness
Toughness ceramics
Elastic constants
Caravaca, María de los Ángeles
Kosteski, Luis Eduardo
Miño, Julio C.
Barrios D’Ambra, Ricardo José Luis
Uberti, Bruno
Casali, Ricardo Antonio
Model for vickers microhardness prediction applied to SnO2 and TiO2 in the normal and high pressure phases
topic_facet Microhardness
Toughness ceramics
Elastic constants
description The Vickers microhardness of TiO2 is calculated using elastic properties obtained by first principles calculations combined with Discrete Elements Method (DEM). The calculation is carried out in rutile and cotunnite phases. It was found that rutile phase, has a microhardness of 8.6 GPa and 12.8 GPa for the failure and fracture modes in agreement with experimental results range. In cotunnite phase the hardness for failure and fracture mode are 24.1 and 24.4 GPa, close to 26 GPa, applying Simunek model. To give insight to this methodology, the calculation is extended to SnO2 in the normal phase. The microhardness value obtained in the failure mode is 2.67 GPa. The method developed here, to obtain the Vickers microhardness, could be applied to a systematic study of tailoring materials. Since hardness is related to elastic shear properties, our results can be used as an assessment of the material properties as solid lubricating at first order. © 2014 Elsevier Ltd. All rights reserved.
format Artículo
author Caravaca, María de los Ángeles
Kosteski, Luis Eduardo
Miño, Julio C.
Barrios D’Ambra, Ricardo José Luis
Uberti, Bruno
Casali, Ricardo Antonio
author_facet Caravaca, María de los Ángeles
Kosteski, Luis Eduardo
Miño, Julio C.
Barrios D’Ambra, Ricardo José Luis
Uberti, Bruno
Casali, Ricardo Antonio
author_sort Caravaca, María de los Ángeles
title Model for vickers microhardness prediction applied to SnO2 and TiO2 in the normal and high pressure phases
title_short Model for vickers microhardness prediction applied to SnO2 and TiO2 in the normal and high pressure phases
title_full Model for vickers microhardness prediction applied to SnO2 and TiO2 in the normal and high pressure phases
title_fullStr Model for vickers microhardness prediction applied to SnO2 and TiO2 in the normal and high pressure phases
title_full_unstemmed Model for vickers microhardness prediction applied to SnO2 and TiO2 in the normal and high pressure phases
title_sort model for vickers microhardness prediction applied to sno2 and tio2 in the normal and high pressure phases
publisher Elsevier
publishDate 2021
url http://repositorio.unne.edu.ar/handle/123456789/28487
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