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Rapid mechanically activated solid-state synthesis of nanocrystalline α-Al2O3 using Fe2O3 and Al

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Powder Metallurgy and Metal Ceramics Aims and scope

In this research, we demonstrate rapid mechanochemical synthesis of nanocrystalline α-alumina (α-Al2O3) from a starting mixture of hematite (Fe2O3) and aluminum (Al). The formation of α-Al2O3 nanocrystallites occurs during the solid-state reaction and through the reduction treatment. Also in this paper, effects of milling time on the particle size and lattice strain of nanocrystalline α-Al2O3 are investigated. The results indicate that complete reduction is reached only after 2 h of milling in a planetary mill and the crystallite size of obtained α-Al2O3 is in general about 12 nm. Also, it is found that increasing the milling time can effectively decrease the nanocrystalline size and increase the lattice strain of α-Al2O3. Finally, the experimental results show appropriate homogeneity and dispersion of related nanocrystallites.

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Authors and Affiliations

  1. Ceramic Department, Materials and Energy Research Center, Tehran, Iran

    M. Bodaghi

  2. Materials Science & Engineering Department, Iran University of Science and Technology, Tehran, Iran

    A. Mirhabibi

  3. Biomaterial Group, Faculty of Biomedical Engineering (Center of Excellence), Amirkabir University of Technology, Tehran, Iran

    M. Tahriri

Authors
  1. M. Bodaghi
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  2. A. Mirhabibi
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  3. M. Tahriri
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Corresponding author

Correspondence to M. Tahriri.

Additional information

Published in Poroshkovaya Metallurgiya, Vol. 48, No. 11–12 (470), pp. 30–37, 2009.

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Bodaghi, M., Mirhabibi, A. & Tahriri, M. Rapid mechanically activated solid-state synthesis of nanocrystalline α-Al2O3 using Fe2O3 and Al. Powder Metall Met Ceram 48, 634–640 (2009). https://doi.org/10.1007/s11106-010-9180-1

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  • DOI: https://doi.org/10.1007/s11106-010-9180-1

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