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: | , , , , , |
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Formato: | Artículo |
Lenguaje: | Inglés |
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Elsevier
2021
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Materias: | |
Acceso en línea: | http://repositorio.unne.edu.ar/handle/123456789/28487 |
Aporte de: |
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I48-R184-123456789-28487 |
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record_format |
dspace |
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 A. 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 A. |
author_facet |
Caravaca, María de los Ángeles Kosteski, Luis Eduardo Miño, Julio C. Barrios D’Ambra, Ricardo José Luis Uberti, Bruno Casali, Ricardo A. |
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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Repositorios |
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