Zirconia’88 pp 325-335 | Cite as

Microstructure Development During Sintering of Ultra Fine Grained Y-TZP

  • G. S. A. M. Theunissen
  • A. J. A. Winnubst
  • W. F. M. Groot Zevert
  • A. J. Burggraaf


Ultra-fine grained, weakly agglomerated Y2O3 doped tetragonal ZrO2 powders with a primary particle size of about 8 nm were prepared by means of two different hydrous-gel precipitation techniques. These methods are respectively the hydrolysis of a metal alkoxide (“alkoxide” method) or a metal chloride (“chloride” method) solution. The sintering behaviour of these powders is compared with a commercial powder (Tosoh TZ3Y). After isostatic compaction at 400 MPa the chloride, alkoxide and TZ3Y compacts densify to 97% relative density after 10 hours sintering at 1050, 1200 and 1100°C respectively. The change in crystallite size and pore morphology has been studied as function of time. The sintering kinetics are probably determined by the aggregate structure within the green compact which is different for the investigated powders. A nanoscale ceramic can be obtained (grain size 53 nm) by sintering a chloride compact during 6.5 hr at 1044°C.


Pore Radius Metal Chloride Primary Particle Size Sinter Behaviour American Ceramic Society 
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Copyright information

© Elsevier Science Publishers Ltd 1989

Authors and Affiliations

  • G. S. A. M. Theunissen
    • 1
  • A. J. A. Winnubst
    • 1
  • W. F. M. Groot Zevert
    • 1
  • A. J. Burggraaf
    • 1
  1. 1.Faculty of Chemical Technology, Lab. for Inorganic Chemistry, Materials Science and CatalysisUniversity of TwenteEnschedeThe Netherlands

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