Abstract
A new Al-enriched γ’-Ni3Al bond coat was developed and its oxidation behaviour was examined and compared to that of conventional Pt-diffused γ/γ’ coatings and β-NiPtAl coatings. This γ’-Ni3Al coating exhibited significantly reduced elemental interdiffusion with the substrate during oxidation compared to two conventional coatings. Although Al-enriched γ’-Ni3Al coatings presented faster thermal grown oxide (TGO) growth than the β-NiPtAl coating, it outperformed β-NiPtAl coatings regarding the rumpling resistance during cycling. The Al-enriched γ’-Ni3Al coating also exhibited superior TGO spallation resistance compared to Pt-diffused γ/γ’ coatings. The mechanisms for the reduced interdiffusion and good rumpling resistance of this γ’-Ni3Al coating are addressed.
| Original language | English |
|---|---|
| Article number | 108523 |
| Journal | Corrosion Science |
| Volume | 167 |
| Early online date | 5 Feb 2020 |
| DOIs | |
| Publication status | Published - 1 May 2020 |
| Externally published | Yes |
Keywords
- A. metal coatings
- B. thermal cycling
- B. Raman spectroscopy
- C. Oxide coatings
- C. oxidation
Fingerprint Dive into the research topics of 'The al-enriched γ’-Ni3Al-base bond coat for thermal barrier coating applications'. Together they form a unique fingerprint.
Cite this
Liu, C., Chen, Y., Qiu, L., Liu, H., Bai, M., & Xiao, P. (2020). The al-enriched γ’-Ni3Al-base bond coat for thermal barrier coating applications. Corrosion Science, 167, [108523]. https://doi.org/10.1016/j.corsci.2020.108523