吉林大学学报(工学版)

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高能振动球磨作用对纳米Al2O3相变温度的影响

张培萍1,刘淑凤1,2,张立功2,罗劲松2,安立楠2   

  1. 1.吉林大学 材料科学与工程学院,长春 130026; 2.中国科学院 长春光学精密机械与物理研究所 激发态物理开放实验室,长春 130033
  • 收稿日期:2005-06-28 修回日期:2005-12-09 出版日期:2006-09-01 发布日期:2006-09-01
  • 通讯作者: 张培萍

Effect of highenergy ball milling on phase transition
temperature of nanoAl2O3 powders

Zhang Pei-ping1, Liu Shu-feng1,2, Zhang Li-gong2 , Luo Jin-song2, An Li-nan2   

  1. 1.College of Materials Science and Engineering, Jilin University, Changchun 130026,China; 2.Open and Key Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033,China
  • Received:2005-06-28 Revised:2005-12-09 Online:2006-09-01 Published:2006-09-01

摘要: 为了探讨球磨作用对纳米Al2O3颗粒相变温度的影响,利用高能振动球磨机分别对纳米Al2O3进行不同时间的球磨,并将球磨作用后的Al2O3粉末在不同温度下进行退火处理。采用XRD、TEM、FTIR及DTA等方法测定处理前后Al2O3粉末的结构、物相组成及相变温度。结果表明:随着球磨时间的增长,Al2O3的相变温度降低,当球磨时间达50 h时,γAl2O3到θAl2O3相变以及θAl2O3到αAl2O3相变的温度均降低了100 ℃左右;球磨作用促进了Al2O3的晶化,同时可以造成纳米氧化铝的晶格缺陷,是导致相变温度降低的主要原因。

关键词: 无机非金属材料, 高能振动球磨, 纳米Al2O3, 相变温度

Abstract: To understand the phase transition temperature of nanoAl2O3 particles by the action of ball milling, the highenergy ball milling was employed on the nanoAl2O3 particles with different times, then the particles were annealed at different temperatures. The structure, component and phase transition temperature of nanoAl2O3 particles were investigated using XRD, TEM, FTIR and DTA. The results show that the phase transition temperature of nanoAl2O3 powders decreases with the milling time increasing. When the milling time reaches 50 h, the phase transition temperatures form γAl2O3 to θAl2O3 and from θAl2O3 to αAl2O3 decrease about 100 ℃, respectively. Ball milling induced partial crystallinereconstruction and high density of lattice defects, resulting in change of phase transition temperature.

Key words: nonmetallic inorganic material, highenergy ball milling, nanoAl2O3, phase transition temperature

中图分类号: 

  • TM28
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