Oxidation and thermal shock resistance of TiAlCrY/YSZ thermal barrier coating on single-crystal TiAl alloys
TiAl alloys are of significant interest due to their potential to replace nickel-based superalloys in aerospace applications. However, their limited oxidation resistance above 800 °C restricts their broader usage. In this study, we demonstrated that the antioxidant properties of a single-crystal TiA...
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Elsevier
2025-03-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425003734 |
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| author | Dijuan Han Zhaopeng Tong Xi Pan Zhiyi Jin Tianfang Sun Yun Shen Yaran Niu |
| author_facet | Dijuan Han Zhaopeng Tong Xi Pan Zhiyi Jin Tianfang Sun Yun Shen Yaran Niu |
| author_sort | Dijuan Han |
| collection | DOAJ |
| description | TiAl alloys are of significant interest due to their potential to replace nickel-based superalloys in aerospace applications. However, their limited oxidation resistance above 800 °C restricts their broader usage. In this study, we demonstrated that the antioxidant properties of a single-crystal TiAl alloy can be enhanced by depositing TiAlCrY/YSZ thermal barrier coating (TBC) using atmospheric/vacuum plasma spraying technology. The results showed that the oxide layer at the TiAlCrY/YSZ interface exhibited minimal spallation after oxidation at 1100 °C and 1200 °C for 200 h. Additionally, the spallation ratio of the YSZ coating was only about 2% after 200 thermal shock cycles at 1100 °C. These properties were comparable to those of the NiCrAlY/YSZ TBCs on nickel-based superalloys, suggesting excellent oxidation and thermal shock resistance. Microstructural analyses revealed that sufficient Al and favorable chemical compatibility at the coating/substrate interface contributed to the exceptional oxidation performance of the TiAlCrY bond coat. Furthermore, the well-matched thermal expansion coefficients (CTEs) among the TiAlCrY, YSZ coatings, and TiAl substrate provided excellent resistance to thermal shock. We believe our findings could offer valuable insights into the widespread application of TBCs on TiAl single crystals. |
| format | Article |
| id | doaj-art-6d0f4e5e35824133951ae8193c86bfef |
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| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
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| series | Journal of Materials Research and Technology |
| spelling | doaj-art-6d0f4e5e35824133951ae8193c86bfef2025-08-20T02:14:54ZengElsevierJournal of Materials Research and Technology2238-78542025-03-01354859486910.1016/j.jmrt.2025.02.126Oxidation and thermal shock resistance of TiAlCrY/YSZ thermal barrier coating on single-crystal TiAl alloysDijuan Han0Zhaopeng Tong1Xi Pan2Zhiyi Jin3Tianfang Sun4Yun Shen5Yaran Niu6School of Mechanical Engineering, Jiangsu University, Zhenjiang, 212013, China; Corresponding author.School of Mechanical Engineering, Jiangsu University, Zhenjiang, 212013, ChinaNorthwest Institute for Non-ferrous Metal Research, Xi'an, 710016, China; Corresponding author.School of Mechanical Engineering, Jiangsu University, Zhenjiang, 212013, ChinaKey Laboratory of Inorganic Coating Materials CAS, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, ChinaKey Laboratory of Inorganic Coating Materials CAS, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, ChinaKey Laboratory of Inorganic Coating Materials CAS, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China; Corresponding author.TiAl alloys are of significant interest due to their potential to replace nickel-based superalloys in aerospace applications. However, their limited oxidation resistance above 800 °C restricts their broader usage. In this study, we demonstrated that the antioxidant properties of a single-crystal TiAl alloy can be enhanced by depositing TiAlCrY/YSZ thermal barrier coating (TBC) using atmospheric/vacuum plasma spraying technology. The results showed that the oxide layer at the TiAlCrY/YSZ interface exhibited minimal spallation after oxidation at 1100 °C and 1200 °C for 200 h. Additionally, the spallation ratio of the YSZ coating was only about 2% after 200 thermal shock cycles at 1100 °C. These properties were comparable to those of the NiCrAlY/YSZ TBCs on nickel-based superalloys, suggesting excellent oxidation and thermal shock resistance. Microstructural analyses revealed that sufficient Al and favorable chemical compatibility at the coating/substrate interface contributed to the exceptional oxidation performance of the TiAlCrY bond coat. Furthermore, the well-matched thermal expansion coefficients (CTEs) among the TiAlCrY, YSZ coatings, and TiAl substrate provided excellent resistance to thermal shock. We believe our findings could offer valuable insights into the widespread application of TBCs on TiAl single crystals.http://www.sciencedirect.com/science/article/pii/S2238785425003734TiAl single crystalTBCsTiAlCrY/YSZ coatingOxidation resistanceThermal shock resistance |
| spellingShingle | Dijuan Han Zhaopeng Tong Xi Pan Zhiyi Jin Tianfang Sun Yun Shen Yaran Niu Oxidation and thermal shock resistance of TiAlCrY/YSZ thermal barrier coating on single-crystal TiAl alloys Journal of Materials Research and Technology TiAl single crystal TBCs TiAlCrY/YSZ coating Oxidation resistance Thermal shock resistance |
| title | Oxidation and thermal shock resistance of TiAlCrY/YSZ thermal barrier coating on single-crystal TiAl alloys |
| title_full | Oxidation and thermal shock resistance of TiAlCrY/YSZ thermal barrier coating on single-crystal TiAl alloys |
| title_fullStr | Oxidation and thermal shock resistance of TiAlCrY/YSZ thermal barrier coating on single-crystal TiAl alloys |
| title_full_unstemmed | Oxidation and thermal shock resistance of TiAlCrY/YSZ thermal barrier coating on single-crystal TiAl alloys |
| title_short | Oxidation and thermal shock resistance of TiAlCrY/YSZ thermal barrier coating on single-crystal TiAl alloys |
| title_sort | oxidation and thermal shock resistance of tialcry ysz thermal barrier coating on single crystal tial alloys |
| topic | TiAl single crystal TBCs TiAlCrY/YSZ coating Oxidation resistance Thermal shock resistance |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425003734 |
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