Tetragonal ZrO2-Y2O3: Part II : The mechanical and electrical properties

K. Keizer*, M. van Hemert, A.J.A. Winnubst, M.A.C.G. van de Graaf, A.J. Burggraaf

*Corresponding author for this work

Research output: Contribution to journalConference articleAcademicpeer-review

Abstract

Dense tetragonal zirconia-yttria ceramics has been prepared with grain sizes between 0.1 and 0.5 µm. The fracture toughness and flexure strength at room temperature are independent on grain size and composition in the tetragonal phase region with YO1.5 larger than 5 at.%. The ageing rate of the mechanical properties increases with increasing grain size, but for samples with grains of 0.1 um no ageing is observed. The bulk and grain boundary resistivities are 1.5-2 times higher than in cubic materials. A low impurity level decreases the grain boundary resistivity while the bulk resistivity is hardly affected.

Original languageEnglish
Pages (from-to)783-788
Number of pages6
JournalJournal de Physique. Colloque
Volume47
Issue numberC1
DOIs
Publication statusPublished - 1 Feb 1986
Event13th International Conference on Science of Ceramics 1985 - Orléans, France
Duration: 9 Sep 198511 Sep 1985
Conference number: 13

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