TY  - JOUR
AU  - Guo, X.
AU  - Ding, Y.
TI  - Grain boundary space charge effect in Zirconia
JO  - Journal of the Electrochemical Society
VL  - 151
SN  - 0013-4651
CY  - Pennington, NJ
PB  - Electrochemical Society
M1  - PreJuSER-34062
SP  - J1 - J7
PY  - 2004
N1  - Record converted from VDB: 12.11.2012
AB  - According to the space charge concept, oxygen vacancies are depleted in the grain boundary space charge layers of acceptor-doped ZrO2; whereas electrons are expected to accumulate in the space charge layers if present, leading to significant changes in the grain boundary electrical properties. In this work, electrons were introduced to 8 mol % TiO2 and 7.36 mol % Y2O3-codoped ZrO2 by annealing in the mixture of 2% H-2-Ar; as a result, the grain boundary arc disappeared, and the electrical conductivities increased considerably, especially for the sample with finer grain size. Both phenomena suggest highly conductive grain boundaries resulting from the accumulation of electrons in the space charge layers. (C) 2003 The Electrochemical Society.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000187428800073
DO  - DOI:10.1149/1.1625948
UR  - https://juser.fz-juelich.de/record/34062
ER  -