Growth kinetics of tetragonal and monoclinic ZrO2 crystallites in 3 mol% yttria partially stabilized ZrO2 (3Y-PSZ) precursor powder

Chih-Wei Kuo, Kuen-Chan Lee, Feng-Lin Yen, Yun-Hwei Shen, Huey-Er Lee, Shaw-Bing Wen, Moo-Chin Wang, Margaret Mary Stack

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14 Citations (Scopus)

Abstract

The growth kinetics of tetragonal and monoclinic ZrO2 crystallites in 3 mol% yttria partially stabilized ZrO2 (3Y-PSZ) precursor powder has been investigated using X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET) specific surface area analysis, transmission electron microscopy (TEM) and high resolution TEM (HRTEM). After calcination of the 3Y-PSZ precursor powder between 773 and 1073 K for 2 h, the crystalline structures were composed of tetragonal and monoclinic ZrO2 as the primary and secondary phases, respectively. When the 3Y-PSZ precursor powder was calcined at 773 K for 2 h, the BET specific surface area was 97.13 m2/g, which is equivalent to a particle size of 10.30 nm. The crystallite sizes determined via XRD and BET agreed well, indicating that the powder was virtually non-agglomerated. The growth kinetics of tetragonal and monoclinic ZrO2 crystallite isothermal growth in the 3Y-PSZ precursor powder are described.
Original languageEnglish
Pages (from-to)288-295
Number of pages8
JournalJournal of Alloys and Compounds
Volume592
Early online date11 Jan 2014
DOIs
Publication statusPublished - Apr 2014

Keywords

  • activation energy
  • crystallite growth
  • tetragonal ZrO2
  • monoclinic ZrO2
  • 3 mol% yttria partially stabilized ZrO2 (3Y-PSZ)

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