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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/020/01/0067-0077

    • Keywords

       

      Glass ceramics; crystallization; microstructure; dielectric behaviour

    • Abstract

       

      Glasses in the system (65 −x) [SrO·TiO2] − (35) [2SiO2·B2O3] − (x) [Bi2O3] wherex = 1, 5, 10 (wt%) prepared by melting in alumina crucible (1375–1575 K), were subjected to different heat treatment schedules followed by DTA studies. Crystallization study showed the formation of Sr2B2O5 as major phase at low temperature (≈950°C) heat treatment. At high temperatures, TiO2 and SrTiO3 with or without Sr2B2O5 crystallize out depending on heat treatment. In this paper, the influence of variation in composition, thermal treatment on the nature of crystallizing phases as well as on the resulting microstructures are investigated through XRD, IR and SEM. Uniform crystallization was achieved by suitable addition of Bi2O3 and proper heat treatment.

    • Author Affiliations

       

      O P Thakur1 2 Devendra Kumar1 Om Parkash1 3 Lakshman Pandey1 4

      1. Department of Ceramic Engineering, Banaras Hindu University, Varanasi - 221 005, India
      2. School of Materials Science and Technology, Institute of Technology, Banaras Hindu University, Varanasi - 221 005, India
      3. Ferrite Division, Solid State Physics Laboratory, Delhi - 110 054, India
      4. Department of Post-graduate Studies and Research in Physics, Rani Durgavati Vishwavidyalaya, Jabalpur - 482 001, India
    • Dates

       

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