TY - GEN
T1 - Nanostructuration effect on ionic conductivity of zirconia ceramics for IT-SOFC
AU - Djurado, E.
AU - Boulfrad, S.
AU - Dessemond, L.
PY - 2008
Y1 - 2008
N2 - For pure ionic conductor materials, such as YSZ, the influence of the nanometric grain size on conductivity is still controversial. This work reports the influence of grain size of massive stabilized zirconia ceramics on the electrical properties. Dense and pure cubic zirconia ceramics ranging from 25 to 240 nm and of 93 to 98% of theoretical density were successfully prepared. Impedance spectroscopy measurements were carried out in order to discriminate and describe the conduction and blocking properties of the grains and the grain boundaries of cubic zirconia according to its microstructure. The role of the space-charge layers was highlighted.
AB - For pure ionic conductor materials, such as YSZ, the influence of the nanometric grain size on conductivity is still controversial. This work reports the influence of grain size of massive stabilized zirconia ceramics on the electrical properties. Dense and pure cubic zirconia ceramics ranging from 25 to 240 nm and of 93 to 98% of theoretical density were successfully prepared. Impedance spectroscopy measurements were carried out in order to discriminate and describe the conduction and blocking properties of the grains and the grain boundaries of cubic zirconia according to its microstructure. The role of the space-charge layers was highlighted.
UR - http://www.scopus.com/inward/record.url?scp=84872140870&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84872140870
SN - 9788880800842
T3 - A Global Road Map for Ceramic Materials and Technologies: Forecasting the Future of Ceramics, International Ceramic Federation - 2nd International Congress on Ceramics, ICC 2008, Final Programme
BT - A Global Road Map for Ceramic Materials and Technologies
T2 - 2nd International Congress on Ceramics, ICC 2008
Y2 - 29 June 2008 through 4 July 2008
ER -