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Título: | High temperature internal friction measurements of 3YTZP zirconia polycrystals. High temperature background and creep |
Autor: | Simas, P.; Castillo-Rodríguez, Miguel; Nó, M.L.; De-Bernardi, S.; Gómez-García, D. CSIC ORCID ; Domínguez-Rodríguez, Alejandro CSIC; San Juan, J. | Palabras clave: | Mechanical spectroscopy ZrO2 Ceramics Internal friction Creep |
Fecha de publicación: | 2014 | Editor: | Elsevier | Citación: | Journal of the European Ceramic Society 34: 3859- 3863 (2014) | Resumen: | This work focuses on the high-temperature mechanic properties of a 3 mol % yttria zirconia polycrystals (3YTZP), fabricated by hot-pressureless sintering. Systematic measurements of mechanical loss as a function of temperature and frequency were performed. An analytical method, based on the generalised Maxwell rheological model, has been used to analyse the high temperature internal friction background (HTB). This method has been previously applied to intermetallic compounds but never to ceramics, except in a preliminary study performed on fine grain and nano-crystalline zirconia. The HTB increases exponentially and its analysis provides an apparent activation enthalpy which correlates well with that obtained from creep experiments. This fact shows on the one hand the plausibility of applying the generalised Maxwell model to ceramics, and on the other hand indicates the possibility of using mechanical spectroscopy as a complementary helpful technique to investigate the high temperature deformation mechanism of materials | Versión del editor: | http://dx.doi.org/10.1016/j.jeurceramsoc.2014.05.016 | URI: | http://hdl.handle.net/10261/102091 | DOI: | 10.1016/j.jeurceramsoc.2014.05.016 |
Aparece en las colecciones: | (ICMS) Artículos |
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