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无机材料学报

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燃烧法合成的纳米α-Al2O3晶格热膨胀系数研究

储刚1,2; 翟秀静2; 符岩2; 吕子剑2,3; 毕诗文2   

  1. 1. 辽宁石油化工大学分析测试研究中心, 抚顺 113001; 2. 东北大学材料与冶金学院, 沈阳 110004; 3. 中国铝业股份有限公司河南分公司， 郑州 450041
  • 收稿日期:2004-04-02 修回日期:2004-06-23 出版日期:2005-05-20 网络出版日期:2005-05-20

Lattice Thermal Expansion Coefficients of Combustion Synthesized α-Al2O3 Nanoparticles

CHU Gang1,2; ZHAI Xiu-Jing2; FU Yan2; LU Zi-Jian2,3; BI Shi-Wen2   

  1. 1. Research Centre of Analysis and Test; Liaoning University of Petroleum & Chemical Technology; Fushun 113001; China; 2.School of Materials & Metallurgy; Northeastern University; Shenyang 110004, China; 3.Henan Branch China Aluminium; Zhengzhou 450041, China
  • Received:2004-04-02 Revised:2004-06-23 Published:2005-05-20 Online:2005-05-20

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摘要： 采用动态高温粉晶X射线衍射技术,对燃烧法合成的纳米α-Al2O3从室温到1100℃之间的晶格热膨胀系数进行了测定.实验结果表明:在测试温度范围内,纳米α-Al2O3的晶胞参数与温度呈线性关系.燃烧法合成的纳米α-Al2O3的晶胞参数随温度的变化符合关系式: △α/(α0△T)=7.27×10-6/℃、△c/(c0△T)=7.50×10-6/℃和△V/(V0△T)=21.92×10-6/℃.

关键词: α-Al2O3, 纳米粉, 燃烧合成, 晶格热膨胀系数, 动态高温粉晶X射线衍射

Abstract: The α-Al2O3 nanoparticles were prepared by the combustion synthesis method, The lattice parameters of α-Al2O3 were determined by XRD at temperatures ranging from roomtemperature to 1100℃, the thermal expansion coefficients of △α/α0; △c/c0 and △V/V0 per℃ of α-Al2O3 lattice were 7.27×10-6/℃, 7.50×10-6/℃ and 21.92×10-6/℃ respectively.

Key words: a-Al2O3, nanopartides, combustion synthesis, lattice thermal expansion coefficients, dynamic high temperature powder XRD

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