Synthesis of [NZP]-structure-type materials by the combustion reaction method

Else Breval, Dinesh K. Agrawal

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16 Scopus citations

Abstract

Ca0.5Sr0.5Zr4P6O24 and Ba1.25Zr4P5.5Si0.5O24 compositions, which belong to the [NZP] family of low-thermal-expansion materials, were synthesized by the combustion reaction method using urea as a fuel and NH4NO3 as an oxidizer. The combustion method is a highly exothermic reaction often referred to as self-propagating high-temperature synthesis. The raw materials used were metal zirconates and fine ZrO2 powders. An earlier-described combustion method using metal nitrates, zirconium oxynitrate, and ammonium dihydrophosphate to synthesize [NZP] compounds was modified in the present study by replacing these costly raw materials with less-expensive oxides. The reactivity of different combinations of raw materials also is discussed.

Original languageEnglish (US)
Pages (from-to)1729-1735
Number of pages7
JournalJournal of the American Ceramic Society
Volume81
Issue number7
DOIs
StatePublished - Jul 1998

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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