TY - GEN
T1 - Effect of annealing atmosphere on oxygen diffusion through Ba-Fe-based perovskite oxide
AU - Watanabe, Ken
AU - Kida, Tetsuya
AU - Sakaguchi, Isao
AU - Ohashi, Naoki
AU - Shimanoe, Kengo
AU - Haneda, Hajime
PY - 2011
Y1 - 2011
N2 - To determine the effect of the annealing atmosphere on oxygen diffusion through Ba0.95La0.05FeO3-δ pellets, 18O2 tracer diffusion and high-resolution secondary ion mapping were performed. When annealing in air, the 18O concentration around the surface up to a depth of 40 μm was almost constant. On the other hand, when annealing in vacuum, the 18O concentration obviously decreased. High-resolution secondary ion mapping indicated that the 18O concentration around the grain boundary was reduced. These results suggested that the grain boundary of BLF annealed in vacuum prevents oxygen diffusion.
AB - To determine the effect of the annealing atmosphere on oxygen diffusion through Ba0.95La0.05FeO3-δ pellets, 18O2 tracer diffusion and high-resolution secondary ion mapping were performed. When annealing in air, the 18O concentration around the surface up to a depth of 40 μm was almost constant. On the other hand, when annealing in vacuum, the 18O concentration obviously decreased. High-resolution secondary ion mapping indicated that the 18O concentration around the grain boundary was reduced. These results suggested that the grain boundary of BLF annealed in vacuum prevents oxygen diffusion.
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U2 - 10.4028/www.scientific.net/KEM.485.141
DO - 10.4028/www.scientific.net/KEM.485.141
M3 - Conference contribution
AN - SCOPUS:79960567171
SN - 9783037851821
T3 - Key Engineering Materials
SP - 141
EP - 144
BT - Electroceramics in Japan XIV
PB - Trans Tech Publications Ltd
ER -