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説明:

The effects of reactive elements (RE) in MCrAlX alloy (M: Metals, X: RE) as the bond coat for thermal barrier coatings durability were investigated by both experimental evaluation and density functional theory (DFT) calculations. Cyclic oxidation tests showed that the lifetime of the sample with Y, Hf, and Si as RE displayed approximately twice of the sample with Y only. Furthermore, the interface energies between oxide (α-Al2O3) and bond coat with various RE (Si, Sc, Ti, Y, Zr, Hf, La, and Ce) were calculated by DFT. DFT results indicate that Hf and Si doping effectively reduce the interface energy.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: Thermal barrier coatings, High temperature oxidation, Thermally grown oxide, Reactive elements, First principles calculation

刊行年月日: 2024-08-02

出版者: Elsevier BV

掲載誌:

• Corrosion Science (ISSN: 0010938X) vol. 237 p. 112329-112329 112329

研究助成金:

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1016/j.corsci.2024.112329

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更新時刻: 2024-09-02 16:30:30 +0900

MDRでの公開時刻: 2024-09-03 08:30:09 +0900