期刊
CERAMICS INTERNATIONAL
卷 35, 期 1, 页码 453-456出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2007.12.002
关键词
Sintering; Electrical conductivity; Microstructure; Yttria stabilized zirconia
资金
- A1320061002
Fast densification of 8YSZ ceramics under a high pressure of 4.5 GPa was carried out at different temperatures (800, 1000, 1450 degrees C), by which a high relative density above 92% could be obtained. FT-Raman spectra indicate that the 8YSZ underwent a phase transition from partially tetragonal to partially cubic phase as temperatures increase from 1000 to 1450 degrees C when sintering under high pressure. The electrical properties of the samples under different high-pressure sintering conditions were measured by complex impedance method. The total conductivity of 0.92 x 10(-2) S cm(-1) at 800 degrees C has been obtained for 8YSZ under high pressure at 1450 degrees C, which is about 200 degrees C lower than that of the samples prepared by conventional pressureless sintering. (C) 2008 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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