| Evaluation of hot-fatigue behaviors of EB-PVD gradient thermal barrier coatings | |
| Guo, HB; Gong, SK; Xu, HB | |
| Corresponding Author | Xu, HB() |
| 2002-02-28 | |
| Source Publication | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| ISSN | 0921-5093 |
| Volume | 325Issue:1-2Pages:261-269 |
| Abstract | Gradient thermal barrier coatings (GTBCs) were prepared by co-deposition of a tablet of mixtures of Al-Al2O3-YSZ and Yttria Stabilized Zirconia (YSZ) onto NiCoCrAlY bond coat by means of electron beam physical vapor deposition (EB-PVD). It was found that the microstructure gradually transferred from metallic bond coat to YSZ topcoat and composition distribution changed continuously through the thickness of the coating. The coating exhibited a good resistance not only to high temperature oxidation but also to cyclic corrosion. Thermal cycling tests for the coatings have demonstrated promising results of lifetimes more than 1000 cycles. A finite element method, numerical model, was employed to study the stresses developed in the coating when cooling to 50 degreesC from a stress-free state at 850 degreesC. The results demonstrate that the Al2O3-YSZ graded layer in the GTBC provided a large reduction in stress and stress gradient. Furthermore, the gradient layer is the crucial location that determines the lifetime of the gradient coating. (C) 2002 Elsevier Science B.V. All rights reserved. |
| Keyword | gradient thermal barrier coatings (GTBCs) electron beam physical vapor deposition (EB-PVD) hot-fatigue behaviors finite element analysis (FEA) |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000174080600033 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/126918 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Xu, HB |
| Affiliation | 1.Beijing Univ Aeronaut & Astronaut, Coll Mat Sci & Engn, Beijing 100083, Peoples R China 2.Beijing Univ Aeronaut & Astronaut, State Key Lab Corros & Protect, Beijing 100083, Peoples R China |
| Recommended Citation GB/T 7714 | Guo, HB,Gong, SK,Xu, HB. Evaluation of hot-fatigue behaviors of EB-PVD gradient thermal barrier coatings[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2002,325(1-2):261-269. |
| APA | Guo, HB,Gong, SK,&Xu, HB.(2002).Evaluation of hot-fatigue behaviors of EB-PVD gradient thermal barrier coatings.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,325(1-2),261-269. |
| MLA | Guo, HB,et al."Evaluation of hot-fatigue behaviors of EB-PVD gradient thermal barrier coatings".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 325.1-2(2002):261-269. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment