| Investigation on pumping oxygen characteristics of （Bi2O3）0.73（Y2O3）0.27 solid electrolyte |
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| 引用本文： | 厉英,王常珍.Investigation on pumping oxygen characteristics of （Bi2O3）0.73（Y2O3）0.27 solid electrolyte[J].中国稀土学报(英文版),2008,26(3):337-340. |
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| 作者姓名： | 厉英 王常珍 |
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| 作者单位： | School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China （50774018） |
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| 摘 要： | （Bi2O3）0.73（Y2O3）0.27 fine powders prepared by wet chemical precipitation method were cold isostatically pressed to form solid electrolyte tubes, and sintered at 900 ℃ for 10 h in the air. Their pumping oxygen characteristics in non-dehydrated Ar gas were investigated, where a ZrO2 （Y2O3 stabilized） oxygen sensor was used to measure the oxygen partial pressure Po2. The results showed that the Po2 value reached magnitudes of 1×10^-2-1×10^-10 Pa at the applied pumping oxygen voltage of 0.5 V, 1×10^-37-1×10^-27 Pa at 1.0 V and 1×10^-53-1×10^47 Pa at 2.0 V within the temperature range from 550 to 650 ℃. Moreover, no cracks were found in the tested solid electrolyte tubes. Thus, the Bi2O3-Y2O3 system might be used in solid electrolyte oxygen pump for purifying gases.
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| 关 键 词： | (Bi2O3)0.73(Y2O3)0.27 电解质 氧感受器 稀土 |
| 收稿时间： | 29 April 2007 |
Investigation on pumping oxygen characteristics of (Bi2O3)0.73(Y2O3)0.27 solid electrolyte |
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| Ying LI,Changzhen WANG.Investigation on pumping oxygen characteristics of (Bi2O3)0.73(Y2O3)0.27 solid electrolyte[J].Journal of Rare Earths,2008,26(3):337-340. |
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| Authors: | Ying LI Changzhen WANG |
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| Affiliation: | aSchool of Materials and Metallurgy, Northeastern University, Shenyang 110004, China |
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| Abstract: | (Bi2O3)0.73(Y2O3)0.27 fine powders prepared by wet chemical precipitation method were cold isostatically pressed to form solid electrolyte tubes, and sintered at 900 °C for 10 h in the air. Their pumping oxygen characteristics in non-dehydrated Ar gas were investigated, where a ZrO2 (Y2O3 stabilized) oxygen sensor was used to measure the oxygen partial pressure Po2. The results showed that the Po2 value reached magnitudes of 1 × 10−20–1 × 10−10 Pa at the applied pumping oxygen voltage of 0.5 V, 1 × 10−37–1 × 10−27 Pa at 1.0 V and 1 × 10−53–1 × 10−47 Pa at 2.0 V within the temperature range from 550 to 650 °C. Moreover, no cracks were found in the tested solid electrolyte tubes. Thus, the Bi2O3-Y2O3 system might be used in solid electrolyte oxygen pump for purifying gases. |
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| Keywords: | (Bi2O3)0 73(Y2O3)0 27 solid electrolyte oxygen sensor oxygen pump rare earths |
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