Low temperature degradation of laser patterned 3Y-TZP: Enhancement of resistance after thermal treatment. Issue 4 (April 2018)

• Record Type: Journal Article
• Authors: Roitero, E.; Ochoa, M.; Anglada, M.; Mücklich, F.; Jiménez-Piqué, E.
• Is Part Of: Journal of the European Ceramic Society. Volume 38:Issue 4(2018)
• Page Start: 1742
• Page End: 1749
• Publication Date: 2018-04
• Subjects: Laser treatment -- 3Y-TZP -- Low temperature degradation -- Aging -- Direct laser interference patterning; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2017.10.044
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: 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.