Evidence of excess oxygen accommodation in yttria partially-stabilized zirconia
Research output: Contribution to journal › Article › peer-review
Electronic versions
Documents
- 2019-Evidence of excess oxygen
Final published version, 722 KB, PDF document
Licence: CC BY-NC-ND Show licence
DOI
ttria partially stabilized zirconia (ZrO2)x(Y2O3)½-x has been investigated to understand accommodation of excess oxygen into its structure. ZrO2 powder with 8 wt% Y2O3 additions was treated in 30 vol% H2O2 solution to promote oxidation of the material. A new Raman peak was observed after treatment at 840 cm−1, consistent with previous reports of solid state peroxide ions (O22−). This was corroborated using atomic scale simulation based on density functional theory; these also highlighted the near-zero solution enthalpy for excess oxygen in the monoclinic structure via the formation of a peroxide ion defect.
| Original language | English |
|---|---|
| Pages (from-to) | 7-10 |
| Journal | Scripta Materialia |
| Volume | 175 |
| Early online date | 10 Sept 2019 |
| DOIs | |
| Publication status | Published - 15 Jan 2020 |
Total downloads
No data available