The rates of chemical expansion for 20 at% yttrium-doped barium zirconate upon hydration at 100–900°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 on the chemical expansion process.

中文翻译：

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水合后钇掺杂锆酸钡中化学膨胀的非线性行为

使用热重分析法和高温X射线衍射法研究了在100-900°C下水分压为0.008和0.023 atm时，水合20％钇掺杂锆酸钡的化学膨胀速率。观察到在平衡条件下，膨胀速率作为质子浓度的函数的非线性行为，这表明缺陷相互作用对化学膨胀过程产生了影响。