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Thermal Stability of PS-PVD YSZ Coatings with Typical Dense Layered and Columnar Structures
| Content Provider | MDPI |
|---|---|
| Author | Cheng, Zefei Yang, Jiasheng Shao, Fang Zhong, Xinghua Zhao, Huayu Zhuang, Yin Sheng, Jing Ni, Jinxing Tao, Shunyan |
| Copyright Year | 2020 |
| Description | Yttria-stabilized zirconia (YSZ) coatings with typical pyramid columnar and dense layered structure were prepared by plasma spray-physical vapor deposition (PS-PVD). The evolution behavior of microstructure and crystallography of the coatings before and after thermal aging treatment were observed by electron backscatter diffraction (EBSD) and field emission scanning electron microscopy (FE-SEM). Results showed that the as-deposited coatings exhibited many types of structures and were mainly composed of a nonequilibrium tetragonal (t’-ZrO2) phase. With the prolonging of thermal exposure time, the initial nonequilibrium tetragonal phase of YSZ coatings gradually transformed into a monoclinic (m-ZrO2) phase. During the process of stationary deposition, at a proper spraying distance, each column exhibited a certain preferred orientation, but the ceramic topcoat did not exhibit distinct preferred orientation statistically. |
| Starting Page | 826 |
| e-ISSN | 20734352 |
| DOI | 10.3390/cryst10090826 |
| Journal | Crystals |
| Issue Number | 9 |
| Volume Number | 10 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2020-09-17 |
| Access Restriction | Open |
| Subject Keyword | Crystals Coatings and Films Plasma Spray-physical Vapor Deposition Electron Backscatter Diffraction Thermal Barrier Coatings |
| Content Type | Text |
| Resource Type | Article |
