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Stabilizing Zirconia

  1. Feb 18, 2012 #1
    It is well known that Zirconia can be stabilized using Y2O3 or Sc2O3. However, stabilization is very dependent on the method of stabilizing; for example, coperecipitation, Sol-Gel, Solid State methods can provide different degrees of stabilization.

    Does anyone know what the reasons for these discrepancies is?
     
  2. jcsd
  3. Feb 18, 2012 #2

    Astronuc

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    Staff: Mentor

    Well, there are different forms of zirconia: cubic, tetragonal and monoclinic. The dopants would have different influence depending on the form and fabrication method.

    See - http://accuratus.com/zirc.html [Broken]

    Partially Stabilized Zirconia – Toughening Mechanisms, Properties and Applications of PSZ
    http://www.azom.com/article.aspx?ArticleID=4790

    Yttria Stabilized Zirconia Bulk Ceramic Fibres ( ZrO2 ) Type ZYBF from Zircar Zirconia
    http://www.azom.com/article.aspx?ArticleID=3095 [Broken]

    Yttria Stabilized Zirconia Fiber - Ceramic Fiber Products for Use in Corrosive Environments from Zir
    http://www.azom.com/article.aspx?ArticleID=3086 [Broken]
     
    Last edited by a moderator: May 5, 2017
  4. Feb 21, 2012 #3

    uby

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    don't confuse stabilized with toughened. stabilized indicates that the high-temperature cubic phase has been made metastable at low and intermediate temperatures by the addition of an aliovalent dopant in solid solution. toughened refers to the microstructure, usually with non-equiaxed grains.
     
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