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Electrical properties of reduced 3YTZP ceramics consolidated by spark plasma sintering

AuthorsPoyato, Rosalía ; Macías-Delgado, Aurelio; García-Valenzuela, A.; González-Romero, R. L.; Muñoz, A. ; Domínguez-Rodríguez, Alejandro
Spark plasma sintering
Impedance spectroscopy
Electrical conductivity
Issue Date2016
CitationCeramic International, 42(6): 6713-6719 (2016)
Abstract3 mol% Yttria doped zirconia ceramics were consolidated by spark plasma sintering (SPS) at two sintering temperatures with the aim of achieving two different reduction levels. Microstructural characterization of the ceramics was performed by scanning electron microscopy (SEM). Electrical properties were investigated by means of impedance spectroscopy from room temperature up to 500 °C. The two ceramics presented a remarkably different electrical behavior. The effect of the extra electrons introduced by reduction during SPS on both the bulk and the grain boundary conductivity was analyzed and discussed.
Publisher version (URL)http://dx.doi.org/10.1016/j.ceramint.2016.01.040
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