Journal of Thermal Analysis and Calorimetry

, Volume 122, Issue 2, pp 579–588 | Cite as

A three-step synthesis process of submicron boron carbide powders using microwave energy

  • M. R. Forouzan
  • R. Taherzadeh Mousavian
  • T. Sharif
  • Y. A. Afkham


In this study, a three-step synthesis process is proposed for the production of submicron B4C powders. The initial step is the mechanical activation of a Mg–C–B2O3 mixture, which is carried out by using a high-energy planetary ball mill. The second phase is the microwave-assisted combustion synthesis, used to fabricate the MgO–B4C composite powders. The final stage is an acid leaching for removing the MgO phase. The results of DSC, XRD, and SEM analyses indicated that mechanical activation was a vital process for microwave synthesis and that no starting powders were remained unreacted after microwave heating. A considerable reduction in reaction temperature was obtained from DSC analysis after mechanical activation process. TG results indicated that separated milling of Mg with B2O3 powders would avoid the formation of gases during exothermic reactions. Finally, it was found that submicron boron carbide powders with an average crystallite size about 114 nm were produced with a high purity after acid leaching.


Boron carbide Microwave-assisted combustion synthesis (MACS) Mechanical activation Ball milling 


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2015

Authors and Affiliations

  • M. R. Forouzan
    • 1
  • R. Taherzadeh Mousavian
    • 2
  • T. Sharif
    • 3
  • Y. A. Afkham
    • 4
  1. 1.Department of Materials Science and EngineeringShiraz UniversityShirazIran
  2. 2.Young Researchers and Elite Club, Ilkhchi BranchIslamic Azad UniversityIlkhchiIran
  3. 3.Department of Metallurgy, Karaj BranchIslamic Azad UniversityKarajIran
  4. 4.Faculty of Materials EngineeringSahand University of TechnologyTabrizIran

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