| Microstructure characteristics and deformation-induced crystalline-to-amorphous phase transformation in thermal barrier coatings during thermal cycling | |
| Liu F(刘飞); Zhang, Chenghao; Li, Jiaqiang; He, Wei; Hou, Xiaohu; Zhang, Hongye; Xie, Huimin | |
| Corresponding Author | Xie, Huimin([email protected]) |
| Source Publication | MATERIALS CHARACTERIZATION
 |
| 2024-07-01 | |
| Volume | 213Pages:12 |
| ISSN | 1044-5803 |
| Abstract | 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. |
| Keyword | Crystalline-to-amorphous HRTEM Nickel-based alloy Phase transformation TBCs |
| DOI | 10.1016/j.matchar.2024.114034 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001249052600001 |
| WOS Keyword | BEHAVIOR ; FAILURE |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing |
| Funding Project | 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] |
| Funding Organization | National Natural Science Foundation of China ; Natural Science Foundation of Inner Mongolia |
| Classification | 一类 |
| Ranking | 1 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/95773 |
| Collection | 非线性力学国家重点实验室 |
| Recommended Citation GB/T 7714 | Liu F,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 | 刘飞.,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 | 刘飞,et al."Microstructure characteristics and deformation-induced crystalline-to-amorphous phase transformation in thermal barrier coatings during thermal cycling".MATERIALS CHARACTERIZATION 213(2024):12. |
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