共 21 条
Non-linear Behavior for Chemical Expansion in Yttrium-doped Barium Zirconate upon Hydration
被引:12
|作者:
Hoshino, Kenta
[1
,2
]
Hyodo, Junji
[1
]
Yamazaki, Yoshihiro
[1
,2
,3
]
机构:
[1] Kyushu Univ, INAMORI Frontier Res Ctr, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan
[2] Kyushu Univ, Dept Mat Sci & Engn, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan
[3] Kyushu Univ, Kyushu Univ Platform Inter Transdisciplinary Ener, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan
关键词:
Proton-conducting oxides;
Chemical expansion upon hydration;
Non-linear behavior;
PROTON CONDUCTION;
SOLUBILITY;
STABILITY;
D O I:
10.1246/cl.200942
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
The rates of chemical expansion for 20 at% yttrium-doped barium zirconate upon hydration at 100-900 degrees C under water partial pressures of 0.008 and 0.023 atm have been studied using combined thermogravimetry and high-temperature X-ray diffractometry. Non-linear behavior for the rates of expansion as a function of proton concentration under equilibrium conditions was observed, suggesting that defect interactions impacted the chemical expansion process.
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页码:899 / 902
页数:4
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