Inorganic Materials

, Volume 54, Issue 12, pp 1267–1273 | Cite as

Preparation of NZP-Type Ca0.75 + 0.5xZr1.5Fe0.5(PO4)3 –x(SiO4)x Powders and Ceramic, Thermal Expansion Behavior

  • D. O. SavinykhEmail author
  • S. A. Khainakov
  • M. S. Boldin
  • A. I. Orlova
  • A. A. Aleksandrov
  • E. A. Lantsev
  • N. V. Sakharov
  • A. A. Murashov
  • S. Garcia-Granda
  • A. V. Nokhrin
  • V. N. Chuvil’deev


Ca0.75 + 0.5xZr1.5Fe0.5(PO4)3 –x(SiO4)x (x = 0–0.5) solid solutions have been synthesized by a sol–gel process and characterized by X-ray diffraction, IR spectroscopy, and differential scanning calorimetry. As expected, the synthesized phosphatosilicates crystallize in a NaZr2(PO4)3-type structure (trigonal symmetry, sp. gr. R\(\bar {3}\)c). The thermal expansion of the solid solutions has been studied by high-temperature X-ray diffraction in the temperature range from 25 to 800°C. Their thermal expansion parameters have been calculated and analyzed as functions of composition. High-density ceramics based on the Ca0.875Zr1.5Fe0.5(PO4)2.75(SiO4)0.25 phosphatosilicate have been produced by spark plasma sintering and their structure and properties have been studied in detail.


NZP phosphatosilicate sol–gel process X-ray diffraction solid solution thermal expansion SPS 



This work was supported by the Russian Science Foundation, project no. 16-13-10464: Advanced ceramic like mineral materials with improved and adjustable service characteristics: design, synthesis, study.


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Copyright information

© Pleiades Publishing, Inc. 2018

Authors and Affiliations

  • D. O. Savinykh
    • 1
    Email author
  • S. A. Khainakov
    • 2
  • M. S. Boldin
    • 1
  • A. I. Orlova
    • 1
  • A. A. Aleksandrov
    • 1
  • E. A. Lantsev
    • 1
  • N. V. Sakharov
    • 1
  • A. A. Murashov
    • 1
  • S. Garcia-Granda
    • 2
  • A. V. Nokhrin
    • 1
  • V. N. Chuvil’deev
    • 1
  1. 1.Lobachevsky State UniversityNizhny NovgorodRussia
  2. 2.University of OviedoOviedoSpain

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