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Structural evolution of ZTA composites during synthesis and processing
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SYSNO ASEP 0456284 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Structural evolution of ZTA composites during synthesis and processing Author(s) Exare, C. (FR)
Kiat, J. M. (FR)
Guiblin, N. (FR)
Porcher, F. (FR)
Petříček, Václav (FZU-D) RID, ORCID, SAISource Title Journal of the European Ceramic Society. - : Elsevier - ISSN 0955-2219
Roč. 35, č. 4 (2015), s. 1273-1283Number of pages 11 s. Language eng - English Country GB - United Kingdom Keywords ceramics ; alumina–zirconia composites ; structural properties ; strain effect ; size effect Subject RIV CB - Analytical Chemistry, Separation R&D Projects GA14-03276S GA ČR - Czech Science Foundation (CSF) Institutional support FZU-D - RVO:68378271 UT WOS 000348084300015 EID SCOPUS 84920546271 DOI 10.1016/j.jeurceramsoc.2014.10.031 Annotation We have studied the structural properties of industrial Zirconia Toughened Alumina (ZTA) composites for different compositions of zirconia and yttria at the main stages of the process. Influences on phases stability, lattice parameters, homogeneous and non-homogeneous strains, particles and crystallites sizes, have been considered and discussed. The structural states are explained from a very delicate balance of three competing effects: yttria-doping, strain and size effect. The first and third one have been shown to stabilize the tetragonal phase relatively to the monoclinic phase, a nd to destabilize the tetragonal phase relatively to the cubic phase whereas the second one is doing the opposite. In addition to this competition, the most prominent local effects have also being considered to fully understand the microscopic situation: i.e. the micro-strains and the inhomogeneous distribution of yttria which both increases the metastable coexistence of phase. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2016
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