Microstructure characteristics and deformation-induced crystalline-to-amorphous phase transformation in thermal barrier coatings during thermal cycling
文献类型：期刊论文
| 作者 | Liu, Fei5,6; Zhang, Chenghao6; Li, Jiaqiang4; He, Wei3; Hou, Xiaohu2; Zhang, Hongye1; Xie, Huimin6 |
| 刊名 | MATERIALS CHARACTERIZATION
 |
| 出版日期 | 2024-07-01 |
| 卷号 | 213页码:12 |
| 关键词 | Crystalline-to-amorphous HRTEM Nickel-based alloy Phase transformation TBCs |
| ISSN号 | 1044-5803 |
| DOI | 10.1016/j.matchar.2024.114034 |
| 通讯作者 | Xie, Huimin(xiehm@mail.tsinghua.edu.cn) |
| 英文摘要 | During service, hot-section components of aircraft engines are subjected to high-temperature gas impacts and erosion. To ensure their normal operation, thermal barrier coatings (TBCs) are applied to their surfaces for thermal protection. However, due to long-term exposure in a thermal-mechanical coupled environment, thermally grown oxides (TGOs) form within the TBCs on these components. As service time increases, the thickness of the TGO increases and, if conditions and stresses exceed critical values cracking and spallation of the TGO will occur. Therefore, studying the microstructural characteristics of TBCs on hot -end components during service is crucial for enhancing the lifespan and performance of aircraft engines. In this study, transmission electron microscopy (TEM) samples containing the interface between TGO and bond coat, as well as interface between TGO and ceramic top coat, were prepared using focused ion beam (FIB) technique. The microstructure characteristics of TBCs during thermal cycling was investigated based on high-resolution transmission electron microscopy (HRTEM) technique. The results reveal a number of microstructural features within the TBC, including nanotwins, stacking faults with different orientations, and nano-sized LPSO phase. In addition, it is revealed that in the presence of Y the TGO formed has an amorphous Al-rich structure whereas where Y is not present a fully crystalline Al 2 O 3 forms. It is postulated that a crystalline-to-amorphous transition occurs in the ceramic topcoat induced by high stress concentration at the interface. |
| WOS关键词 | BEHAVIOR ; FAILURE |
| 资助项目 | National Natural Science Foundation of China[12032013] ; National Natural Science Foundation of China[12327801] ; National Natural Science Foundation of China[11972209] ; Natural Science Foundation of Inner Mongolia[2023LHMS01013] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001249052600001 |
| 资助机构 | National Natural Science Foundation of China ; Natural Science Foundation of Inner Mongolia |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/95772]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Xie, Huimin |
| 作者单位 | 1.Beijing Forestry Univ, Sch Technol, Beijing 100083, Peoples R China 2.Inner Mongolia Univ Technol, Coll Mat Sci & Engn, Hohhot 010051, Peoples R China 3.Hunan Univ, Coll Mech & Vehicle Engn, Changsha 410082, Peoples R China 4.Aecc Hunan Aviat Powerplant Res Inst, Zhuzhou 412002, Peoples R China 5.Chinese Acad Sci, State Key Lab Nonlinear Mech LNM, Inst Mech, Beijing 100190, Peoples R China 6.Tsinghua Univ, Sch Aerosp Engn, Beijing 100084, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Fei,Zhang, Chenghao,Li, Jiaqiang,et al. Microstructure characteristics and deformation-induced crystalline-to-amorphous phase transformation in thermal barrier coatings during thermal cycling[J]. MATERIALS CHARACTERIZATION,2024,213:12. |
| APA | Liu, Fei.,Zhang, Chenghao.,Li, Jiaqiang.,He, Wei.,Hou, Xiaohu.,...&Xie, Huimin.(2024).Microstructure characteristics and deformation-induced crystalline-to-amorphous phase transformation in thermal barrier coatings during thermal cycling.MATERIALS CHARACTERIZATION,213,12. |
| MLA | Liu, Fei,et al."Microstructure characteristics and deformation-induced crystalline-to-amorphous phase transformation in thermal barrier coatings during thermal cycling".MATERIALS CHARACTERIZATION 213(2024):12. |
入库方式： OAI收割
来源：力学研究所
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