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2006 , Vol. 21 >Issue 4: 821 - 827

DOI: https://doi.org/10.3724/SP.J.1077.2006.00821

研究论文

高能球磨制备立方AlN及其高温相变

  • 李鹏亮 ,
  • 周敬恩 ,
  • 席生岐
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  • 西安交通大学材料科学与工程学院金属材料强度国家重点实验室, 西安 710049

收稿日期: 2005-08-05

  修回日期: 2005-11-18

  网络出版日期: 2006-07-20

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Cubic AlN Synthesized by High Energy Ball Milling and Its Phase Conversion at High Temperature

  • LI Peng-Liang ,
  • ZHOU Jing-En ,
  • XI Sheng-Qi
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  • State Key Laboratory for Mechanical Behavior of Materials, School of Material Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China

Received date: 2005-08-05

  Revised date: 2005-11-18

  Online published: 2006-07-20

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摘要

研究了高能球磨过程中Al2O3的相变, 随着球磨时间的延长, 粉末中发生了γ -Al2O3向α -Al2O33的转变. 高能球磨20h, Al2O3部分非晶化, 同时, 有立方AlN生成. 增加球磨强度, 立方AlN生成量增加, 650r/min高能球磨40h, AlN生成量达到72%. 随后的氮气气氛退火实验发现, 在500℃以上, 立方氮化铝与氧化铝反应, 生成AlON相. AlON相的生成, 有效地降低了碳热还原氮化反应激活能.

关键词： 立方氮化铝; 氧化铝; 高能球磨; AlON

本文引用格式

李鹏亮 , 周敬恩 , 席生岐 . 高能球磨制备立方AlN及其高温相变[J]. 无机材料学报, 2006 , 21(4) : 821 -827 . DOI: 10.3724/SP.J.1077.2006.00821

Abstract

The phase conversion of Al2O3 during high-energy ball milling was investigated. After 20h milling, amorphous and AlN were observed in powders, these were not reported previously. The crystal structure of AlN gained during ball milling is cubic, differs from that of the regular hexagonal AlN synthesized with carbothermal reduction. AlON phase forms by the reaction of cubic AlN and γ-Al2O3 after annealing in N2 atmosphere at the temperature above 500℃. The formation of AlON phase decreases the commencing temperature of AlN.

Key words： cubic aluminum nitride; alumina; high energy ball milling; AlON

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