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| Pressureless reactive sintering mechanism of nanocrystalline Bi2O3-Y2O3 solid electrolyte | |
| 作者姓名： | Qiang Zhen Liangyan Dong Gang Shi Rong Li Weiming He Jianqiang Liu |
| 作者单位： | [1]Nano-science and Nano-technology Research Center, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China [2]Railway Worker College of Qiqihar, Qiqihar 161002, China [3]School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China |
| 基金项目： | 中国科学院资助项目，the Nano Technology Special Foundation of Shanghai Science and Technology Committee |
| 摘 要： | The nanocrystalline Bi2O3-Y2O3 solid electrolyte material was synthesized by pressureless reactive sintering process with Bi2O3 and Y2O3 nano mixed powder as raw materials, which was prepared by a chemical coprecipitation process. The study on the behavior of nano δ-Bi2O3 formation and its grain growth showed that the solid solution reaction of Y2O3 and β-Bi2O3 to form δ-Bi2O3occurs mainly in the initial stage of sintering process, and nano δ-Bi2O3 crystal grains grow approximately following the rule of paracurve ((D-D0)2=K.t) during sintering process. After sintered at 600℃ for 2 h, the samples could reach above 96% in relative density and have dense microstructure with few remaining pores, the δ-Bi2O3 grains are less than 100 nm in size. |
| 关 键 词： | 纳米晶 三氧化二铋 三氧化二钇 固体电解质 晶粒生长 相变 无压反应烧结过程 |
| 收稿时间： | 2004-10-15 |
Pressureless reactive sintering mechanism of nanocrystalline Bi2O3-Y2O3 solid electrolyte |
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| Qiang Zhen Liangyan Dong Gang Shi Rong Li Weiming He Jianqiang Liu.Pressureless reactive sintering mechanism of nanocrystalline Bi2O3-Y2O3 solid electrolyte[J].Journal of University of Science and Technology Beijing,2006,13(1):87-91. | |
| Authors: | Qiang Zhen Liangyan Dong Gang Shi Rong Li Weiming He Jianqiang Liu |
| Affiliation: | 1. Nano-science and Nano-technology Research Center, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China;School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China 2. Railway Worker College of Qiqihar, Qiqihar 161002, China 3. School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China |
| Abstract: | The nanocrystalline Bi2O3-Y2O3 solid electrolyte material was synthesized by pressureless reactive sintering process with Bi2O3 and Y2O3 nano mixed powder as raw materials, which was prepared by a chemical coprecipitation process. The study on the behavior of nano δ-Bi2O3 formation and its grain growth showed that the solid solution reaction of Y2O3 and β-Bi2O3 to form δ-Bi2O3occurs mainly in the initial stage of sintering process, and nano δ-Bi2O3 crystal grains grow approximately following the rule of paracurve ((D-D0)2=K.t) during sintering process. After sintered at 600℃ for 2 h, the samples could reach above 96% in relative density and have dense microstructure with few remaining pores, the δ-Bi2O3 grains are less than 100 nm in size. |
| Keywords: | nanocrystalline bismuth oxide-yttrium oxide solid electrolyte pressureless reactive sintering process crystal grain growth phase transformation |
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