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- Title
Annealing-Induced Off-Stoichiometric and Structural Alterations in Ca 2+ - and Y 3+ -Stabilized Zirconia Ceramics.
- Authors
Zhu, Wenliang; Nakashima, Shizuka; Marin, Elia; Gu, Hui; Pezzotti, Giuseppe
- Abstract
In the current study, high-temperature stability was investigated in two types of zirconia ceramics stabilized with two different additives, namely, calcia and yttria. The evolutions of structure and oxygen-vacancy-related defects upon annealing in air were investigated as a function of temperature by combining X-ray diffractometry with Raman, X-ray photoelectron and cathodoluminescence spectroscopies. We systematically characterized variations in the concentration of oxygen vacancies and hydroxyl groups during thermal treatments and linked them to structural alterations and polymorphic transformation. With this approach, we clarified how the combined effects of different dopants and temperature impacted on structural development and on the thermal stability of the oxygen-vacancy-related defect complex.
- Subjects
YTTRIA stabilized zirconium oxide; X-ray photoelectron spectroscopy; POLYMORPHIC transformations; ZIRCONIUM oxide; CERAMICS; THERMAL stability; HYDROXYL group
- Publication
Materials (1996-1944), 2021, Vol 14, Issue 19, p5555
- ISSN
1996-1944
- Publication type
Article
- DOI
10.3390/ma14195555