Journal of Materials Science

, Volume 30, Issue 3, pp 720–723 | Cite as

A stabilization mechanism of M2O3c-type rare earth tetragonal stabilized ZrO2 via co-decomposition

  • G. Pretorius


Evidence was obtained that c-type rare earth M2O3 stabilized ZrO2 in the tetragonal phase via oxygen coordination between the M2O3 molecule and the ZrO2 unit cell. The ratio for 100% stabilization was calculated to be 2.7 mol% M2O3 stabilizer. This was experimentally proved by using the co-decomposition process to obtain 100% tetragonal stabilization efficiency. It has also been established that stabilization is dependant upon the average Zr-O bond length of 226 pm as a parameter and not necessarily of an exact radius varying between 206 pm and 246 pm.


Oxygen Polymer Bond Length Rare Earth Material Processing 
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Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • G. Pretorius
    • 1
  1. 1.Department of ChemistryUniversity of PretoriaSouth Africa

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