• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/094/0110

    • Keywords

       

      Boron carbide; gamma irradiation; amorphisation; scanning electron microscopy; X-ray diffraction; Fourier transform infrared spectroscopy; elemental mapping analysis.

    • Abstract

       

      Boron carbide (B$_4$C) has been widely used in nuclear reactors and nuclear applications. In this work, the high-purity (99.9%) B$_4$C samples were irradiated using a gamma source ($^{60}$Co) with a dose rate ($D$) of 0.27 Gy/s at different gamma irradiation doses at room temperature. Phase and microstructural characterisation of B$_4$C samples were carried out using X-ray diffraction (XRD) and scanning electron microscopy (SEM). XRD results displayed some degradation of the diffraction peaks. The calculations reveal that 62% of B$_4$C has changed into the amorphous phase when the irradiation dose is 194.4 kGy. Fourier transform infrared spectroscopy (FTIR) was used to explain chemical bonds and functional groups of B$_4$C samples before and after gamma irradiation. The results showed that C–C chemical bonds are weaker than B–C chemical bonds and tend to break under gamma irradiation. Element mapping analysis for each gamma irradiation dose of B$_4$C samples was performed using SEM patterns. The dynamics of the elements on the surface and chemical formula of all B$_4$C samples were also determined after gamma irradiation.

    • Author Affiliations

       

      MATLAB N MIRZAYEV1 2 DEMIR ERTUGRUL1 3 KHAGANI F MAMMADOV2 VLADIMIR A SUKRATOV1 SAKIN H JABAROV2 4 SAPHINA BIIRA5 ELMAR B ASGEROV1 BEKHZODJON A ABDURAKHIMOV6 A BERIL TUGRUL33

      1. Joint Institute for Nuclear Research, Dubna, Moscow Distr., Russia 141980
      2. Institute of Radiation Problems, Azerbaijan National Academy of Sciences, 1143 Baku, Azerbaijan
      3. Istanbul Technical University, 34469 Istanbul, Turkey
      4. Azerbaijan State Pedagogical University, Baku AZ-1000, Azerbaijan
      5. Department of Physics, Busitema University, P.O. Box 236, Tororo, Uganda
      6. Institute of Nuclear Physics, Academy of Sciences of Uzbekistan, 100214 Tashkent, Uzbekistan
    • Dates

       
  • Pramana – Journal of Physics | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.