Título:
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Low temperature degradation of laser patterned 3Y-TZP: enhancement of resistance after thermal treatment
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Autor/a:
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Roitero, Erica; Ochoa Vives, Manuel; Anglada Gomila, Marcos Juan; Mücklich, Frank; Jiménez Piqué, Emilio
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Otros autores:
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Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica; Universitat Politècnica de Catalunya. CIEFMA - Centre d'Integritat Estructural, Micromecànica i Fiabilitat dels Materials |
Abstract:
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The aim of this study is to characterize the resistance to low temperature degradation (LTD) of the surface of dental-grade zirconia (3Y-TZP) patterned with a Nd:YAG laser (532. nm harmonic and pulse duration of 10. ns) employing an interference setup.Laser patterning decreases the resistance to LTD of 3Y-TZP because of the presence of monoclinic phase and residual stresses, induced by the thermal shock during laser-material interaction. A thermal treatment (1. h at 1200. °C) anneals the affected microstructure and increase the resistance to LTD of laser patterned 3Y-TZP. Transformation delay may be attributed to monoclinic phase reversion, texture in the tetragonal phase and the existence of a net of shallow microcracks on the surface, accommodating autocatalytic transformation. |
Abstract:
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Peer Reviewed |
Materia(s):
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-Àrees temàtiques de la UPC::Enginyeria dels materials -Low temperature engineering -Aging -3Y-TZP -Aging -Direct laser interference patterning -Laser treatment -Low temperature degradation -Envelliment |
Derechos:
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Tipo de documento:
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Artículo - Versión presentada Artículo |
Editor:
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Elsevier
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