Synthesis of Nanocrystalline High-Temperature Zirconia Phases

Abstract

The formation of ZrO2 nanocrystals during heat treatment of amorphous ZrO(OH)2 is studied. The results indicate that the high-temperature phases of ZrO2 (T-ZrO2 and trace amounts of C-ZrO2) can be produced and stabilized at 350–375°C in nanoparticles with a size of coherently scattering domains on the order of 20 nm. Heating to above 500–600°C leads to the formation and growth of the stable phase M-ZrO2. The nature of the starting zirconium salt is shown to have a significant effect on the thermal decomposition of zirconium hydroxides.

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Petrunin, V.F., Popov, V.V., Zhu Hongzhi et al. Synthesis of Nanocrystalline High-Temperature Zirconia Phases. Inorganic Materials 40, 251–258 (2004). https://doi.org/10.1023/B:INMA.0000020523.89340.46

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Keywords

  • Zirconium
  • Heat Treatment
  • Hydroxide
  • Inorganic Chemistry
  • Thermal Decomposition