Effect of Microstructure on Electrorheological Property for Pure TiO_(2) Particle Material  

Effect of Microstructure on Electrorheological Property for Pure Particle Material

作　　者：Yanli SHANG Shuzhen MA Junran LI Mingxiu LI Juan WANG Shaohua ZHANG 

机构地区：[1]State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China [2]Department of Chemistry, Hebei Normal University, Shijiazhuang 050091, China [3]Department of Chemistry, Baoding Teacherrs College, Baoding 071051, China [4]School of Vehicle and Transmission Engineering, Beijing Institute of Technology, Beijing 100081, China

出　　处：《Journal of Materials Science & Technology》2006年第4期572-576,共5页材料科学技术（英文版）

基　　金：This project was supported by the State Key Laboratory of Vehicle Transmission（No. 51457030103 JW0201）; the National Natural Science Foundation of China（Grant Nos. 20023005 and 29831010）;the National Key Project for Fundamental Researh （G1998061305）.

摘　　要：Pure titanium dioxide （TiO2） particle materials were prepared by hydrolyzing titanium tetrachloride （TiCl4）. The microstructures of these materials were determined by X-ray diffraction （XRD）, accelerated surface area and porosimetry apparatus （BET）, and transmission electron microscopy （TEM）. The TiO2 materials obtained by calcinations under different temperatures distinctly revealed different microstructures in crystal structure type, surface area, pore size, pore volume and grain size. The relationship between the microstructure of the TiO2 materials and their electrorheological （ER） activity was investigated. Anatase titania particles have better ER performance than rutile titania particles. Amorphous TiO2 materials display higher ER activity than the crystalline titania materials. A large pore volume can be more advantageous in improving the ER effect of a particle material.Pure titanium dioxide （TiO2） particle materials were prepared by hydrolyzing titanium tetrachloride （TiCl4）. The microstructures of these materials were determined by X-ray diffraction （XRD）, accelerated surface area and porosimetry apparatus （BET）, and transmission electron microscopy （TEM）. The TiO2 materials obtained by calcinations under different temperatures distinctly revealed different microstructures in crystal structure type, surface area, pore size, pore volume and grain size. The relationship between the microstructure of the TiO2 materials and their electrorheological （ER） activity was investigated. Anatase titania particles have better ER performance than rutile titania particles. Amorphous TiO2 materials display higher ER activity than the crystalline titania materials. A large pore volume can be more advantageous in improving the ER effect of a particle material.

关 键 词：Titanium dioxide TEMPERATURE MICROSTRUCTURE Electrorheolagical property 

分 类 号：TB32[一般工业技术—材料科学与工程] O37[理学—流体力学]