Stability of cubic phase in nanocrystalline ZrO2

Chatterjee, A. ; Pradhan, S. K. ; Datta, A. ; De, M. ; Chakravorty, D. (1994) Stability of cubic phase in nanocrystalline ZrO2 Journal of Materials Research, 9 (2). pp. 263-265. ISSN 0884-2914

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Stable cubic ZrO2 up to a temperature of 1173 K has been synthesized by a chemical precipitation technique. Such a stability appears to be driven by particle size. The critical value below which cubic ZrO2 has been found to be stable is 17 nm. The x-ray diffraction pattern of such ultrafine cubic particles is similar to that obtained by stabilization of ZrO2 by the addition of 20 mole % CaO.

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