| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1461823 | Ceramics International | 2014 | 10 Pages |
Abstract
Nanostructured scandia (4.6 mol%), yttria (0.4 mol%) doped zirconia (5SYSZ) and 7 wt% yttria stabilized zirconia (7YSZ) thermal barrier coatings (TBCs) were produced by plasma spraying on nickel-based superalloy substrates with NiCrAlY as the bond coat. The thermal shock behavior of the two as-sprayed TBCs at 1000 °C was investigated. The results indicated that the thermal cycling lifetime of 7YSZ TBCs was longer than the 5SYSZ TBCs due to the lower thermal mismatch stress between the ceramic layer and the metallic layer at high temperature. However, the nanostructured 5SYSZ coating had higher thermal stability than 7YSZ TBC.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Mohammad Reza Loghman-Estarki, Reza Shoja Razavi, Hossein Edris, Mousa pourbafrany, Hossein Jamali, Reza ghasemi,