Loading...
Please wait, while we are loading the content...
Similar Documents
Mechanical Properties Durability of $Sc_{2}O_{3}-Y_{2}O_{3}$ Co-Stabilized $ZrO_{2}$ Thermal Barrier Materials for High Temperature Application
| Content Provider | MDPI |
|---|---|
| Author | Fan, Wei Wang, Yiqi Liu, Yanfen Bai, Yu Wang, Yu Liu, Qi |
| Copyright Year | 2022 |
| Description | The poor phase stability of conventional 6–8 wt.% yttria-partially stabilized zirconia (YSZ) results in the formation of detrimental cracks in thermal barrier coatings (TBCs) as well as the decrease of fracture toughness, limiting its long-term application above 1200 °C. Here, we try to prove that a higher t′-phase stability is the prerequisite for the mechanical properties durability of $ZrO_{2}$-based TBC materials. Compared with YSZ ceramic, 7.0 mol.% $Sc_{2}O_{3}$ and 0.5 mol.% $Y_{2}O_{3}$ co-stabilized $ZrO_{2}$ (ScYSZ) shows a superior t′ phase stability at 1300 °C. In addition, the fracture toughness of ScYSZ is nearly stable after being annealed at 1300 °C for 0–40 h, while the value of YSZ gradually declines during the aging process. The stable fracture toughness of ScYSZ is closely related to its prominent t′ phase stability. The elastic modulus of ScYSZ is nearly unchanged and lower than that of YSZ. The excellent stability of the phase structure and mechanical properties makes ScYSZ a great potential material for next generation high-temperature TBCs. |
| Starting Page | 155 |
| e-ISSN | 20796412 |
| DOI | 10.3390/coatings12020155 |
| Journal | Coatings |
| Issue Number | 2 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-01-27 |
| Access Restriction | Open |
| Subject Keyword | Coatings Coatings and Films Thermal Barrier Coatings Scysz Phase Stability Fracture Toughness Heat Treatment |
| Content Type | Text |
| Resource Type | Article |
