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Title: Grain Boundary Resistivity of Yttria-Stabilized Zirconia at 1400°C

The grain size dependence of the bulk resistivity of 3 mol% yttria-stabilized zirconia at 1400°C was determined from the effect of a dc electric field E a = 18.1  V/cm on grain growth and the corresponding electric current during isothermal annealing tests. Employing the brick layer model, the present annealing test results were in accordance with extrapolations of the values obtained at lower temperature employing impedance spectroscopy and 4-point-probe dc. The combined values give that the magnitude of the grain boundary resistivity ρ b = 133  ohm-cm. The electric field across the grain boundary width was 28–43 times the applied field for the grain size and current ranges in the present annealing test.
Authors:
 [1] ;  [2] ;  [1] ;  [3] ;  [1]
  1. Materials Science and Engineering Department, North Carolina State University, Raleigh, NC 27695-7907, USA
  2. Materials and Metallurgy Department, Kunming University of Science and Technology, Kunming, Yunnan 650093, China
  3. Department of Mechanical Engineering, Engineering Center, ECME 114, University of Colorado, Boulder, CO 80309-0427, USA
Publication Date:
OSTI Identifier:
1198233
Grant/Contract Number:
F602.ER46403
Type:
Published Article
Journal Name:
Journal of Ceramics
Additional Journal Information:
Journal Volume: 2013; Related Information: CHORUS Timestamp: 2016-07-30 07:49:13; Journal ID: ISSN 2090-8628
Publisher:
Hindawi Publishing Corporation
Sponsoring Org:
USDOE
Country of Publication:
Country unknown/Code not available
Language:
English