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. Rc). The thermal expansion of the solid solutions has been studied by high-temperature X-ray diffraction in the temperature range from 25 to 800 degrees 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.
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Karlsruhe Inst Technol, Inst Appl Mat Ceram Mat & Technol, Haid Und Neu Str 7, D-76131 Karlsruhe, GermanyKarlsruhe Inst Technol, Inst Appl Mat Ceram Mat & Technol, Haid Und Neu Str 7, D-76131 Karlsruhe, Germany
Bucharsky, E. C.
Schell, K. G.
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Karlsruhe Inst Technol, Inst Appl Mat Ceram Mat & Technol, Haid Und Neu Str 7, D-76131 Karlsruhe, GermanyKarlsruhe Inst Technol, Inst Appl Mat Ceram Mat & Technol, Haid Und Neu Str 7, D-76131 Karlsruhe, Germany
Schell, K. G.
Hintennach, A.
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Daimler AG, Mercedesstr 137, D-70327 Stuttgart, GermanyKarlsruhe Inst Technol, Inst Appl Mat Ceram Mat & Technol, Haid Und Neu Str 7, D-76131 Karlsruhe, Germany
Hintennach, A.
Hoffmann, M. J.
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Karlsruhe Inst Technol, Inst Appl Mat Ceram Mat & Technol, Haid Und Neu Str 7, D-76131 Karlsruhe, GermanyKarlsruhe Inst Technol, Inst Appl Mat Ceram Mat & Technol, Haid Und Neu Str 7, D-76131 Karlsruhe, Germany