caa a22 4500 463230361 CHVBK 20180405153240.0 cr unu---uuuuu 170326e20070401xx s 000 0 eng 10.1007/s10853-006-1336-5 doi (NATIONALLICENCE)springer-10.1007/s10853-006-1336-5 Preparation, microstructure and electrorheological property of nano-sized TiO2 particle materials doped with metal oxides [Elektronische Daten] [Yan-Li Shang, Yun-Ling Jia, Fu-Hui Liao, Jun-Ran Li, Ming-Xiu Li, Juan Wang, Shao-Hua Zhang] New nano-sized TiO2 electrorheological (ER) materials doped with different metal (M=Na, Zr, Ce, Al, Ca, Zn) oxides have been prepared. Relationships between the composition, microstructure, conductivity, dielectric property and ER effect of these materials have been studied. The results show that doping Na2O, ZrO2, Al2O3 or CeO2 can enhance the ER performance of the TiO2 material, whereas, doping CaO or ZnO would decrease the ER activity of the material. The shear stress (τE) of the suspension (25wt%) of Na-doped TiO2 in dimethyl silicone oil reaches 1.6kPa at the electric field strength E=4.2kV/mm and shear rate γ=300s−1, and its τr value of 54.6 (τr=τE/τ0, where τ0 is the shear stress at no electric field) is seven times higher than that of pure TiO2 suspension. This high τr value is very advantageous to the use. The dielectric loss tangent (tanδ) plays a dominant role in influencing the ER performance of a particle material, and the effect of the surface area (pore volume, especially) and grain size should be taken into account. Springer Science+Business Media, LLC, 2006 Shang Yan-Li State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, 100871, Beijing, China aut Jia Yun-Ling State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, 100871, Beijing, China aut Liao Fu-Hui State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, 100871, Beijing, China aut Li Jun-Ran State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, 100871, Beijing, China aut Li Ming-Xiu Department of Chemistry, Hebei Normal University, 050091, Shijiazhuang, China aut Wang Juan School of Vehicle and Transmission Engineering, Beijing Institute of Technology, 100081, Beijing, China aut Zhang Shao-Hua School of Vehicle and Transmission Engineering, Beijing Institute of Technology, 100081, Beijing, China aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/8(2007-04-01), 2586-2590 0022-2461 42:8<2586 2007 42 10853 https://doi.org/10.1007/s10853-006-1336-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1336-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shang Yan-Li State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, 100871, Beijing, China aut NATIONALLICENCE 700 1- Jia Yun-Ling State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, 100871, Beijing, China aut NATIONALLICENCE 700 1- Liao Fu-Hui State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, 100871, Beijing, China aut NATIONALLICENCE 700 1- Li Jun-Ran State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, 100871, Beijing, China aut NATIONALLICENCE 700 1- Li Ming-Xiu Department of Chemistry, Hebei Normal University, 050091, Shijiazhuang, China aut NATIONALLICENCE 700 1- Wang Juan School of Vehicle and Transmission Engineering, Beijing Institute of Technology, 100081, Beijing, China aut NATIONALLICENCE 700 1- Zhang Shao-Hua School of Vehicle and Transmission Engineering, Beijing Institute of Technology, 100081, Beijing, China aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/8(2007-04-01), 2586-2590 0022-2461 42:8<2586 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer