Journal of Solid State Electrochemistry

, Volume 15, Issue 9, pp 1919–1926

Preparation and characterization of Bi0.75Er0.25O1.5 and Bi0.75Er0.125Y0.125O1.5 nanocrystalline ceramics by SPS

  • Rong Li
  • Qiang Zhen
  • Xionggang Lu
  • Michel Drache
  • Rose-Noëlle Vannier
Original Paper
  • 139 Downloads

Abstract

Nanopowders of Bi0.75Er0.25O1.5 and Bi0.75Er0.125Y0.125O1.5 were prepared by a reverse titration chemical coprecipitation method under controlled pH conditions. After calcination at 500 °C for 3 h, powders with grain size in the order of 10 nm were obtained. In order to keep the nanosize of grains, these powders were densified by spark plasma sintering. Samples with relative density higher than 96% were prepared in only 10 min up to 500 °C with an average grain size of 15 and 11 nm for Bi0.75Er0.25O1.5 and Bi0.75Er0.125Y0.125O1.5, respectively. Impedance spectroscopy revealed slightly higher conductivity for the Bi0.75Er0.125Y0.125O1.5 composition compared to Bi0.75Er0.25O1.5 nanoceramic, but performances remained lower than the corresponding Bi0.75Er0.25O1.5 microcrystalline sample. However, mechanical properties of both nanocrystalline ceramics are improved when compared to microcrystalline samples.

Keywords

Bi2O3–Er2O3 Bi2O3–Er2O3–Y2O3 Nanocrystalline ceramic SPS Ion conductivity Mechanical properties 

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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Rong Li
    • 1
    • 2
    • 3
  • Qiang Zhen
    • 1
    • 2
  • Xionggang Lu
    • 2
  • Michel Drache
    • 3
  • Rose-Noëlle Vannier
    • 3
  1. 1.Nano-science and Nano-technology Research CenterShanghai UniversityShanghaiPeople’s Republic of China
  2. 2.School of Materials Science and EngineeringShanghai UniversityShanghaiPeople’s Republic of China
  3. 3.Unité de Catalyse et de Chimie du solide, CNRS UMR 8181, Ecole Nationale Supérieure de Chimie de LilleUniv. Lille Nord de FranceVilleneuve d’Ascq CedexFrance

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