TY - GEN
T1 - Mechanical strength evaluation of YSZ, GDC and LSCF under SOFC operating conditions
AU - Watanabe, S.
AU - Sato, K.
AU - Iguchi, Fumitada
AU - Yashiro, K.
AU - Hashida, T.
AU - Kawada, T.
N1 - Funding Information:
This study was supported by "Development of Systems and Elemental Technology on SOFCs," funded by New Energy and Industrial Technology Development Organization (NEDO).
Publisher Copyright:
© The Electrochemical Society.
PY - 2017/5/30
Y1 - 2017/5/30
N2 - Our group has attempted to construct multiscale model which can simulate elastic and inelastic deformation and fracture probability with consideration of electrochemical, thermal and mechanical properties of constituent materials. The model requires the details of material properties to simulate cells/stacks under operating conditions. In this study, we focus on mechanical properties of SOFC materials including 8YSZ electrolyte, 10GDC barrier layer and LSCF6428 cathode which are well-known as brittle materials, and evaluated their elasticity, fracture properties and strain using Small Punch (SP) test. Mechanical characteristics of 8YSZ showed drastic change in the intermediate temperature range. LSCF6428 exhibited the trends of ferroelasticity and the fracture strength inversely correlated with the fracture strain for temperature variation. Fracture strain of 10GDC was the smallest among three materials in the whole testing temperature range.
AB - Our group has attempted to construct multiscale model which can simulate elastic and inelastic deformation and fracture probability with consideration of electrochemical, thermal and mechanical properties of constituent materials. The model requires the details of material properties to simulate cells/stacks under operating conditions. In this study, we focus on mechanical properties of SOFC materials including 8YSZ electrolyte, 10GDC barrier layer and LSCF6428 cathode which are well-known as brittle materials, and evaluated their elasticity, fracture properties and strain using Small Punch (SP) test. Mechanical characteristics of 8YSZ showed drastic change in the intermediate temperature range. LSCF6428 exhibited the trends of ferroelasticity and the fracture strength inversely correlated with the fracture strain for temperature variation. Fracture strain of 10GDC was the smallest among three materials in the whole testing temperature range.
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U2 - 10.1149/07801.2181ecst
DO - 10.1149/07801.2181ecst
M3 - Conference contribution
AN - SCOPUS:85028452797
T3 - ECS Transactions
SP - 2181
EP - 2190
BT - ECS Transactions
A2 - Singhal, S. C.
A2 - Kawada, T.
PB - Electrochemical Society Inc.
T2 - 15th International Symposium on Solid Oxide Fuel Cells, SOFC 2017
Y2 - 23 July 2017 through 28 July 2017
ER -