高能球磨法低温合成Mg4Nb2O9纳米粉体-陕西师范大学学报期刊社网站

陕西师范大学学报（自然科学版）

物理学

高能球磨法低温合成Mg4Nb2O9纳米粉体

付志粉1，2，马建立1，丁兰芳1，吴怡1，刘鹏1

(1 陕西师范大学物理学与信息技术学院，陕西西安 710062；2 安徽理工大学理学院，安徽淮南 232001)

付志粉，女，硕士研究生．研究方向为电子信息功能材料.

摘要:

以MgO和Nb2O5为原料，用高能球磨法制备Mg4Nb2O9前驱体，前驱体经900℃热处理合成Mg4Nb2O9纳米粉体．采用X射线衍射和扫描电镜（Scanning Electron Microscopy, SEM）研究了粉体随合成温度、球磨时间、保温时间的微结构变化和物相转变过程．结果表明，MgO-Nb2O5混合物经60 h高能球磨在900℃保温3 h合成出粒径为50～80 nm 的Mg4Nb2O9纳米粉体．高能球磨法制备的粉体在1 200℃可烧结成致密的具有优异性能的Mg4Nb2O9陶瓷．

关键词：

高能球磨；纳米粉体； X射线衍射

收稿日期：

2009-02-06

中图分类号：

O511+.2

文献标识码：

文章编号：

1672-4291(2009)06-0023-04

基金项目：

国家自然科学基金资助项目(50872078)

Doi:

Low temperature synthesis of Mg4Nb2O9 nanopowders by high-energy ball-milling method

FU Zhi-fen1，2, MA Jian-li1, DING Lan-fang1, WU Yi1, LIU Peng1

(1 College of Physics and Information Technology, Shaanxi Normal University, Xi′an 710062, Shaanxi, China； 2 College of science, Anhui University of Science and Technology, Huainan 232001, Anhui, China)

Abstract:

The Mg4Nb2O9 nanopowders are prepared at 900℃ by high-energy ball-milling. The influences of calcining temperature、milling time and dwell time of the formation temperature on the microstructure and the phase composition of single phase Mg4Nb2O9 powders are investigated by the X-ray diffraction (XRD) and scanning electron microscopy (SEM). It is found that the single phase Mg4Nb2O9 nanopowders grain with the size of 50～80 nm are sythesized at 900℃ for 3 h by high-energy ball-milling method. The dense Mg4Nb2O9 ceramics is obtained from the milled powders after annealing at 1 200℃.

KeyWords:

high-energy ball-milling; nanopowder; X-ray diffraction pattern(XRD)