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Synthesis of a NiTi2-AlNi-Al2O3 nanocomposite by mechanical alloying and heat treatment of Al-TiO2-NiO

  • Reza BeygiEmail author
  • Majid Zarezadeh Mehrizi
  • Hossein Mostaan
  • Mahdi Rafiei
  • Ahmadreza Abbasian
Article
  • 24 Downloads

Abstract

The aim of the present study was to investigate the phases formed during ball milling of Al-TiO2-NiO. For this purpose, a mixture of Al-TiO2-NiO with a molar ratio of 6:1:1 was used. Characterization of the milled powders by X-ray diffraction, differential thermal analysis, field-emission scanning electron microscopy, and transmission electron microscopy showed the formation of nanocrystalline NiTi2 along with AlNi. A thermodynamical investigation confirmed that NiO was reduced by Al during ball milling, which consequently promoted TiO2 reduction and the formation of NiTi2. Al is capable of reducing NiO either during ball milling or at temperatures above the melting point of Al; by contrast, TiO2 can be reduced by Al only by milling.

Keywords

mechanical alloying NiTi2−AlNi nanocomposite reaction mechanism 

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Notes

Acknowledgement

The authors wish to thank the research board of Arak University for the financial support and the provision of the research facilities used in this work.

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Copyright information

© University of Science and Technology Beijing and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Reza Beygi
    • 1
    Email author
  • Majid Zarezadeh Mehrizi
    • 1
  • Hossein Mostaan
    • 1
  • Mahdi Rafiei
    • 2
  • Ahmadreza Abbasian
    • 3
  1. 1.Department of Materials Engineering and MetallurgyFaculty of Engineering, Arak UniversityArakIran
  2. 2.Advanced Materials Research Center, Department of Materials Engineering, Najafabad BranchIslamic Azad UniversityNajafabadIran
  3. 3.Department of Materials EngineeringFaculty of Engineering, University of Sistan and BaluchestanZahedanIran

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