| Preparation and Electrorheological Property of NaNO3-Doped Y2O3 Material |
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| 引用本文： | 霍莉,马淑珍,商艳丽,贾云玲,许明远,李俊然,张少华. Preparation and Electrorheological Property of NaNO3-Doped Y2O3 Material[J]. 中国稀土学报(英文版), 2006, 24(1): 39-43. DOI: 10.1016/S1002-0721(06)60062-8 |
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| 作者姓名： | 霍莉 马淑珍 商艳丽 贾云玲 许明远 李俊然 张少华 |
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| 作者单位： | State Key Laboratory of Rare Earth Materials Chemistry and Applications College of Chemistry and Molecular Engineering Peking University Beijing 100871 China，Department of Chemistry Baoding Teacher′s College Baoding 071051 China，Department of Chemistry Baoding Teacher′s College Baoding 071051 China，State Key Laboratory of Rare Earth Materials Chemistry and Applications College of Chemistry and Molecular Engineering Peking University Beijing 100871 China，Department of Chemistry Hebei Normal University Shijiazhuang 050091 China，State Key Laboratory of Rare Earth Materials Chemistry and Applications College of Chemistry and Molecular Engineering Peking University Beijing 100871 China，Department of Chemistry Hebei Normal University Shijiazhuang 050091 China，Department of Chemistry Baoding Teacher′s College Baoding 071051 China，State Key Laboratory of Rare Earth Materials Chemistry and Applications College of Chemistry and Molecular Engineering Peking University Beijing 100871 China，School of Vehicle and Transmission Engineering Beijing Institute of Technology Beijing 100081 China |
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| 基金项目： | Project is supported by the State Key Laboratory of Vehicle Transmission，the National Natural Science Foundation of China，国家重点基础研究发展计划(973计划) |
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| 摘 要： | Theelectrorheological(ER)fluidisasuspension ofpolarizablesolidparticlesdispersedinanon con ductingliquid,exhibitingdrasticandreversible changeinrheologicalpropertieswhenanexternalelec tricfieldisappliedviaorderingofthemicrostructure intoparticulatecolumns[1].Thisrapidandreversibleresponsehaspotentialapplicationinmanyelectrically controlledmechanicaldeviceswhichtransformelectri calenergyintomechanicalenergy,suchasclutches,valves,dampingdevices,andsoon[2,3].However,ERfluidhasnotbeenutilizedlarg…
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| 关 键 词： | NaNO3 掺杂 Y2O3 电流变性能 显微结构 |
| 文章编号： | 1002-0721（2006）01-039-05 |
| 收稿时间： | 2005-06-12 |
| 修稿时间： | 2005-10-31 |
Preparation and Electrorheological Property of NaNO3-Doped Y2O3 Material |
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| Li , Shuzhen Ma, Yanli Shang, Yunling Jia, Mingyuan Xu, Junran Li,Shaohua Zhang. Preparation and Electrorheological Property of NaNO3-Doped Y2O3 Material[J]. Journal of Rare Earths, 2006, 24(1): 39-43. DOI: 10.1016/S1002-0721(06)60062-8 |
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| Authors: | Li Shuzhen Ma Yanli Shang Yunling Jia Mingyuan Xu Junran Li Shaohua Zhang |
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| Affiliation: | aState Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China;bDepartment of Chemistry, Baoding Teacher's College, Baoding 071051, China;cDepartment of Chemistry, Hebei Normal University, Shijiazhuang 050091, China;dSchool of Vehicle and Transmission Engineering, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | A new class of electrorheological (ER) material using rare earth (RE=Y) oxide as the substrate, NaNO3-doped Y2O3 materials, were synthesized using Na2CO3 and Y(NO3)3 as starting materials. Their ER performance, dielectric property, and crystal structure were studied. The results show that doping NaNO3 can markedly enhance the ER activity of the Y2O3 material. For the suspensions of these materials in dimethyl silicone oil, a clear dependence of the shear stress on the doping degree of NaNO3 was observed, and the optimal value of Na/Y molar ratio of 0.6 in doping degree was discovered, the relative viscosity ηr (ηE/η0, E=4.2 kV*mm-1) of the suspensions is nine times higher than that of pure Y2O3 material. The new results of the relationship between ER effect and the microstructure were obtained, which are helpful for further understanding the mechanism of ER effect and synthesizing a good ER material. |
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| Keywords: | electrorheological property yttrium oxide NaNO3 doping microstructure rare earths |
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