Synthesis and sintering of Ca0.5Zr2P3O12 -a low thermal expansion material

D. K. Agrawal, V. S. Stubican

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Abstract

The single phase compound Ca0.5Zr2P3O12 (CZP) was prepared by solid state reaction technique. This material shows a negative thermal expansion in the temperature region of 30°-500°C. The effect of MgO and ZnO addition on the sintering behavior and thermal expansion characteristics of Ca0.5Zr2P3O12 was investigated. Mg3(PO4)2 and Zn3(PO4)2 were observed as minor phases responsible for improving the overall thermal expansion of CZP + MgO, ZnO systems. SEM studies and density data are also discussed. Observed sintering kinetics suggest that a liquid phase is promoting the sintering reaction. 98+% of theoretical density and near zero expansion behavior in certain compositions were observed.

Original languageEnglish (US)
Pages (from-to)99-106
Number of pages8
JournalMaterials Research Bulletin
Volume20
Issue number2
DOIs
StatePublished - Feb 1985

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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