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- Title
Microscopic mapping of dopant content and its link to the structural and thermal stability of yttria-stabilized zirconia polycrystals.
- Authors
Zhu, Wenliang; Nakashima, Shizuka; Marin, Elia; Gu, Hui; Pezzotti, Giuseppe
- Abstract
The effect of yttria content on structural and thermal stability of zirconia in yttria-stabilized zirconia (YSZ) polycrystalline ceramics was systematically investigated by Raman spectroscopy and X-ray photoelectron spectroscopy. Taking advantage of an experimentally retrieved linear dependence of Raman bandwidth on yttria content, Raman imaging was applied as an effective tool in examining the local yttrium distribution in YSZ ceramics and its relationship with environmentally driven polymorphic transformation. A significant variation of monoclinic fraction with yttria content and temperature was found and interpreted according to a newly proposed model, which takes into account the change in lattice hydroxyl and oxygen vacancies and the possible formation of stable defect complexes.
- Subjects
THERMAL stability; X-ray photoelectron spectroscopy; PHOTOELECTRON spectroscopy; POLYMORPHIC transformations; YTTRIUM aluminum garnet; YTTRIUM oxides; YTTRIA stabilized zirconium oxide
- Publication
Journal of Materials Science, 2020, Vol 55, Issue 2, p524
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-019-04080-9