Synthesis and characterization of nanocrystalline α-Al2O3 using Al and Fe2O3 (hematite) through mechanical alloying

被引：18

作者：

Bodaghi, Masoud ^{[2
]}

Zolfonoon, Hesam ^{[3
]}

Tahriri, Mohammadreza ^{[1
]}

Karimi, Meysam ^{[1
]}

机构：

[1] Amirkabir Univ Technol, Fac Biomed Engn, Biomat Grp, Tehran, Iran

[2] Mat & Energy Res Ctr, Dept Ceram, Tehran, Iran

[3] New Sci & Ind Co, Tehran, Iran

来源：

SOLID STATE SCIENCES | 2009年 / 11卷 / 02期

关键词：

Mechanical alloying; Synthesis; alpha-Al2O3; Reactive milling; Solid-state reaction; POWDER;

D O I：

10.1016/j.solidstatesciences.2008.06.021

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

In this present work, the synthesis of nanocrystalline alpha-Al2O3 using pure aluminum (AI) and Fe2O3 (hematite) as the precursors by mechanical alloying technique has been studied. The formation of alpha-Al2O3 nanocrystallites occurs during the solid-state reaction and through the reduction treatment. Also in this paper, effects of milling time on particle size and the lattice strain nanocrystalline alpha-Al2O3 have been investigated. Obtained powders were evaluated by scanning electron microscopy (SEM), transmission electron microscopy (TEM), differential thermal analysis (DTA), thermal gravimetric analysis (TGA) and X-ray diffraction (XRD). The obtained results indicated that a reduction reaction was completed after 2 h milling in a planetary mill. The crystallite size of obtained alpha-alumina (alpha-Al2O3) was in general about 12 nm. Finally, the results showed appropriate homogeneity and dispersion of related nanocrystalline. (c) 2008 Elsevier Masson SAS. All rights reserved.

引用

页码：496 / 500

页数：5

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