TY - GEN
T1 - Experimental study of aging induced damage and self-healing behavior of glass/ceramic sealant used in SOFC
AU - Liu, W. N.
AU - Sun, X.
AU - Koeppel, B.
AU - Khaleel, M.
PY - 2008
Y1 - 2008
N2 - High operating temperature of solid oxide fuel cells require that sealant must function at high temperature between 600° and 900°C and in the oxidizing and reducing environments of fuel and air. In this paper, experiment tests were implemented to investigate the aging dependent volume fraction of ceramic phases, aging induced micro-damage, and self-healing behavior of the glass ceramic sealant used in solid oxide fuel cells (SOFCs). With longer heat treatment or aging time during operation, further crystallization may reduce the residual glass content while boosting the ceramic crystalline content. Meanwhile, the micro-damage was induced by the cooling down process from the operating temperature to the room temperature, which can potentially degrade the mechanical properties of the glass/ceramic sealant. Upon reheating to the SOFC operating temperature, the glass/ceramic sealant exhibits the possible self-healing characterization, which can restore the mechanical performance of the glass/ceramic sealant.
AB - High operating temperature of solid oxide fuel cells require that sealant must function at high temperature between 600° and 900°C and in the oxidizing and reducing environments of fuel and air. In this paper, experiment tests were implemented to investigate the aging dependent volume fraction of ceramic phases, aging induced micro-damage, and self-healing behavior of the glass ceramic sealant used in solid oxide fuel cells (SOFCs). With longer heat treatment or aging time during operation, further crystallization may reduce the residual glass content while boosting the ceramic crystalline content. Meanwhile, the micro-damage was induced by the cooling down process from the operating temperature to the room temperature, which can potentially degrade the mechanical properties of the glass/ceramic sealant. Upon reheating to the SOFC operating temperature, the glass/ceramic sealant exhibits the possible self-healing characterization, which can restore the mechanical performance of the glass/ceramic sealant.
KW - Aging
KW - Glass/ceramic sealant
KW - Micro-voids
KW - SOFC
KW - Self-healing
UR - http://www.scopus.com/inward/record.url?scp=63749094329&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:63749094329
SN - 9781605606217
T3 - Materials Science and Technology Conference and Exhibition, MS and T'08
SP - 380
EP - 389
BT - Materials Science and Technology Conference and Exhibition MS and T'08
T2 - Materials Science and Technology Conference and Exhibition, MS and T'08
Y2 - 5 October 2008 through 9 October 2008
ER -
