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    • Keywords


      Nanocomposite; silica–calcium zirconate; thermal coefficient expansion; dielectric constant.

    • Abstract


      Silica–calcium zirconate nanocomposite was prepared in a two-step procedure. First, nanocalcium zirconate was synthesized by the modified sol–gel method; then, silica was added to the prepared sol and the resulting product was calcined at 700–1000° C. Dilatometric measurements were performed to determine the coefficient of thermal expansion (𝑘𝛼). It was concluded that 𝑘𝛼 was decreased from 15.96 × 10−6 to 10.26 × 10−6 1° C−1 with the increase in calcium zirconate/silica ratio. Moreover, studies on the dielectric properties and calcination temperature showed that the dielectric constant (𝜀r) was increased from 3.9 to 5.7.

    • Author Affiliations


      Neda Kermani1 Maryam Kargar Razi1 Seyed Saeed Mirzaee2 Reza Tayebee3

      1. Department of Chemistry, Azad University Tehran North Branch, Tehran, Iran
      2. Department of Ceramic, Materials and Energy Research Centre, Karaj 3177983634, Iran
      3. Department of Chemistry, School of Sciences, Hakim Sabzevari University, Sabzevar, Iran
    • Dates

  • Bulletin of Materials Science | News

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