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Journal of Materials Science

, Volume 15, Issue 1, pp 114–118 | Cite as

Solid state reactions in the ZrO2 · SiO2 - αAl2O3 system

  • E. Di Rupo
  • M. R. Anseau
Papers

Abstract

Solid state reactions between ZrO2· SiO2 and αAl2O3 in mixed powders were studied by quantitative X-ray diffraction, density measurements and qualitative EDAX. Data were obtained at temperatures ranging from 1400 to 1600° C for 5 h; the initial molar ratios of the reactants (Al2O3/ZrO2 · SiO2) varying from 0 to 5. The results indicate that: (1) ZrO2· SiO2 and αAl2O3 react and form ZrO2, crystalline 3Al2O3 · 2SiO2 and a noncrystalline mullite phase; (2) the non-crystalline mullite phase is an important transitional phase towards equilibrium under subsolidus conditions. In the experimental conditions used the amount of the non-crystalline phase varies by as much as about 15%. This phase is of great importance in the mechanisms of reaction sintering between ZrO2 · SiO2 and αAl2O3.

Keywords

Polymer SiO2 Transitional Phase Solid State Solid State Reaction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman and Hall Ltd. 1980

Authors and Affiliations

  • E. Di Rupo
    • 1
  • M. R. Anseau
    • 1
  1. 1.Department of Materials ScienceUniversity of MonsMonsBelgium

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