Preparation of MgTiO_3 Ceramics by High Energy Ball Milling

作     者：陶珍东 TAO Zhendong~ 1,2 ZHANG Ying~1 YANG Zhongxi~ 1,2 WANG Yingzi~1 MENG Shanshan~1 TENG Tieli~1 (1.School of Materials Science and Engineering, Jinan University, Jinan 250022,China;2.School of Materials Science and Engineering, Shandong University, Jinan 250061,China)

作者机构：School of Materials Science and EngineeringJinan University Jinan 250022ChinaSchool of Materials Science and Engineering Shandong University Jinan 250061China 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2006年第21卷第3期

页      面：116-119页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

主　　题：high energy ball milling MgTiO3 ceramics sintering feature 

摘      要：MgTiO3 precursor was mechanochemically synthesized by high-energy ball milling of MgO and TiO2 . The sinteting characteristic of the resulted MgTiO3 precursor was investigated. The experirneatal resalts indicate that particles of both MgO and TiO2 powders become smaller rapidly, and then the costalline structures of MgO and TiO2 change significantly. MgTiO3 was observed by XRD after 30 hours of ball milling. Strong diffraction peaks of MgTiO3 were observed after 50 hours of ball milling. HRTEM observation proves that dense MgTiO3 ceramics with a compact crystalline structure can be sintered from rnechanochemically activated MgTiO3 precursor, the volume density of the resulting ceramie is as high aa 95% of the theoretical density, the porosity and average pore diameter of the ceramic are measured as 4.95% and 50 nm respectively, and the transverse strength exceeded 500 MPa.