TY - GEN
T1 - Investigation of high temperature elastic modulus and internal friction of SOFC electrolytes using resonance method
AU - Kushi, T.
AU - Sato, K.
AU - Unemoto, A.
AU - Amezawa, K.
AU - Kawada, T.
PY - 2009
Y1 - 2009
N2 - The Young's modulus, the shear modulus, the Poisson ratio and the internal friction of typical electrolyte materials for SOFC, (Gd2O3) 0.05(CeO2)0.9, (Sm2O 3)0.05, (CeO2)0.9, (Y 2O3)0.08(ZrO2)0.92, (Y2O3)0.1(ZrO2)0.9, (Sc 2O3)0.1(ZrO2)0.9, (Sc2O3)0.9Ce0.01(ZrO 2)0.89 were evaluated by a resonance method. The measurements were carried out from room temperature to 1273 K in flowing pure Ar. The Young's modulus of (Gd2O3)0.05(CeO 2)0.9 and (Sm2O3) 0.05(CeO2)0.9 gradually decreased with increasing temperature as expected for the typical ceramics. However, the Young's modulus of the series of zirconia drastically decreased in the temperature range between 573 K and 873 K, and correspondingly the internal friction increased. Such a characteristic temperature dependence of the mechanical properties was discussed in terms of phase change.
AB - The Young's modulus, the shear modulus, the Poisson ratio and the internal friction of typical electrolyte materials for SOFC, (Gd2O3) 0.05(CeO2)0.9, (Sm2O 3)0.05, (CeO2)0.9, (Y 2O3)0.08(ZrO2)0.92, (Y2O3)0.1(ZrO2)0.9, (Sc 2O3)0.1(ZrO2)0.9, (Sc2O3)0.9Ce0.01(ZrO 2)0.89 were evaluated by a resonance method. The measurements were carried out from room temperature to 1273 K in flowing pure Ar. The Young's modulus of (Gd2O3)0.05(CeO 2)0.9 and (Sm2O3) 0.05(CeO2)0.9 gradually decreased with increasing temperature as expected for the typical ceramics. However, the Young's modulus of the series of zirconia drastically decreased in the temperature range between 573 K and 873 K, and correspondingly the internal friction increased. Such a characteristic temperature dependence of the mechanical properties was discussed in terms of phase change.
UR - http://www.scopus.com/inward/record.url?scp=77649174140&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77649174140&partnerID=8YFLogxK
U2 - 10.1149/1.3205705
DO - 10.1149/1.3205705
M3 - Conference contribution
AN - SCOPUS:77649174140
SN - 9781566777391
T3 - ECS Transactions
SP - 1673
EP - 1677
BT - ECS Transactions - Solid Oxide Fuel Cells 11 (SOFC-XI)
T2 - 11th International Symposium on Solid Oxide Fuel Cells (SOFC-XI)- 216th ECS Meeting
Y2 - 4 October 2009 through 9 October 2009
ER -