Abstract
An investigation of phase transformations, taking place in a composite ZrO2(Y)–Al2O3 ceramic material sintered from ultrafine powders manufactured by a plasmochemical process, is performed during its storage and subsequent thermal heating. The composite low-porosity ceramics based on zirconium dioxide is found to be stable in interactions with the environment during long-term storage under standard conditions and thermal heating. A high efficiency of a spontaneous t→m phase transformation is observed in the composite ceramics with an open porosity of more than 6%. The composite ceramics, in which low porosity is combined with a reduced content of the stabilizing yttrium impurity in the crystal lattice of zirconium dioxide, is characterized by the lowest phase stability.
Original language | English |
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Pages (from-to) | 1593-1599 |
Number of pages | 7 |
Journal | Russian Physics Journal |
Volume | 57 |
Issue number | 11 |
DOIs | |
Publication status | Published - 1 Mar 2015 |
Keywords
- calorimetry
- composite ceramics
- dilatometry
- phase stability
- zirconia
ASJC Scopus subject areas
- Physics and Astronomy(all)