Preparation and Electrorheological Performance of SiO2 Particle Materials Adsorbed with YF3, Y2(CO3)3, Y2(C2O4)3 or YPO4
来源期刊：JOURNAL OF RARE EARTHS2002年第6期
论文作者：李淑新 马淑珍 李俊然 张邵华 许明远 高松
Key words：rare earths; adsorb; particle material; ER performance;
Abstract: The SiO2 adsorbing YF3, Y2(CO3)3, Y2(C2O4)3 and YPO4, respectively, formed four systems of particle materials: SiO2*YF3, SiO2*Y2(CO3)3 , SiO2*Y2(C2O4)3 and SiO2*YPO4. The electrorheological(ER) behavior of the electrorheological fluids (ERF) prepared by dispersing them in silicone oil was tested at 20 ℃ under d.c. field. The results show that the system of SiO2*YF3 does not display ER activity, and the ER performance of the particle materials of SiO2*Y2(CO3)3 is the best among them. The shearing stress of ERF with SiO2*Y2(CO3)3 particles is 1.644 KPa and the relative viscosity ηr(=ηE/η0) is 20.3 (under field strength E=4200 V*mm-1) while the adsorbed content of Y2(CO3)3 in the SiO2 particle materials is 12.4%(mass fraction).
李淑新1，马淑珍1，李俊然2，张邵华3，许明远2，高松2
(1.Department of Chemistry, Baoding Teacher′s College, Baoding 071051, China;
2.State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871, China;
3.School of Vehicle and Transmission Engineering, Beijing Institute of Technology, Beijing 100081, China)
Abstract:The SiO2 adsorbing YF3, Y2(CO3)3, Y2(C2O4)3 and YPO4, respectively, formed four systems of particle materials: SiO2*YF3, SiO2*Y2(CO3)3 , SiO2*Y2(C2O4)3 and SiO2*YPO4. The electrorheological(ER) behavior of the electrorheological fluids (ERF) prepared by dispersing them in silicone oil was tested at 20 ℃ under d.c. field. The results show that the system of SiO2*YF3 does not display ER activity, and the ER performance of the particle materials of SiO2*Y2(CO3)3 is the best among them. The shearing stress of ERF with SiO2*Y2(CO3)3 particles is 1.644 KPa and the relative viscosity ηr(=ηE/η0) is 20.3 (under field strength E=4200 V*mm-1) while the adsorbed content of Y2(CO3)3 in the SiO2 particle materials is 12.4%(mass fraction).
Key words:rare earths; adsorb; particle material; ER performance;
【全文内容正在添加中】
