High Temperature Water Oxygen Corrosion Mechanism of Ytterbium Disilicate Environmental Barrier Coatings
The composite components of ceramic matrix face serious water oxygen corrosion degradation in the aeroengine gas environment. The application of environmental barrier coatings on the surface of components for thermal protection is an effective measure to improve the high-temperature performance and...
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| Published in | Cai liao bao hu Vol. 57; no. 3; pp. 63 - 69 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
Editorial Department of Materials Protection
01.03.2024
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| Subjects | |
| Online Access | Get full text |
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| Summary: | The composite components of ceramic matrix face serious water oxygen corrosion degradation in the aeroengine gas environment. The application of environmental barrier coatings on the surface of components for thermal protection is an effective measure to improve the high-temperature performance and extend the service life of ceramic matrix composite components. The high-temperature stability of the environmental barrier coatings plays a significant role on the structural integrity of the components. For elucidating the failure behavior and mechanism of environmental barrier coatings subjected to high-temperature water oxygen corrosion, this work conducted a static high temperature water oxygen corrosion experiment on an atmospheric plasma spraying Yb2Si2O7/mullite/silicon environmental barrier coating system at 1 350 ℃ and 90%(volume fraction) H2O-10%O2 water/oxygen vapor environment. Meanwhile, XRD, SEM, EDS and other material characterization analysis methods were employed to study the failure behavior of c |
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| ISSN: | 1001-1560 |
| DOI: | 10.16577/j.issn.1001-1560.2024.0056 |