Thermal cyclic life and failure mechanism of nanostructured 13 wt%Al2O3 doped YSZ coating prepared by atmospheric plasma spraying
Source abstract
Abstract
Abstract Nanostructured 13 wt%Al 2 O 3 doped nanostructured 8 wt% yttria stabilized zirconia (nano-13AlYSZ) coatings were deposited by atmospheric plasma spray (APS). The isothermal oxidation and thermal cyclic life of the nano-13AlYSZ coating at 1100 °C were investigated. The isothermal oxidation test results indicate that the oxidation kinetics of nano-13AlYSZ follows a parabolic law. The parabolic rate constant at 1100 °C is calculated 0.04365 mg 2 cm −4 h −1 . The thermal cyclic life of nano-13AlYSZ coating is about 953 times at 1100 °C. The failure of the nano-13AlYSZ coating occurs at the interface between the nano-13AlYSZ coating and the thermal growth oxide (TGO). A finite element method is employed to analyze the stress distribution in the nano-13AlYSZ coating. The results show that maximum stresses occur at the top coat/TGO interface.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: High-Temperature Coating Behaviors · Nuclear Materials and Properties · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (22)
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1. Atmospheric plasma sprayed coatings of nanostructured zirconia10.1016/S0955-2219(01)00291-6 ↗
2. Evaluation of microhardness and elastic modulus of thermally sprayed nanostructured zirconia coatings10.1016/S0257-8972(00)00997-X ↗
3. Investigation of the thermomechanical properties of a plasma-sprayed nanostructured zirconia coating10.1016/S0955-2219(02)00345-X ↗
4. Mechanical property variations within thermal barrier coatings10.1016/j.surfcoat.2007.05.091 ↗
5. Application opportunities for nanostructured materials and coatings10.1016/0921-5093(95)09969-7 ↗
6. Nanostructured zirconia–30vol.% alumina composite coatings deposited by atmospheric plasma spraying10.1016/j.tsf.2005.02.040 ↗
7. Nanostructured YSZ thermal barrier coatings engineered to counteract sintering effects10.1016/j.msea.2007.07.082 ↗
8. Heat treatment of nanostructured thermal barrier coating10.1016/j.ceramint.2006.03.022 ↗
9. Effect of heat treatment on phase stability, microstructure, and thermal conductivity of plasma-sprayed YSZ10.1023/A:1015310509520 ↗
10. Coatings of metastable ceramics deposited by solution-precursor plasma spray: I. Binary ZrO2–Al2O3 system10.1016/j.actamat.2006.06.025 ↗
11. Coatings of metastable ceramics deposited by solution-precursor plasma spray: II. Ternary ZrO2–Y2O3–Al2O3 system10.1016/j.actamat.2006.06.026 ↗
12. Thermal conductivity and phase stability of plasma sprayed ZrO2–Y2O3–La2O3 coatings10.1016/j.surfcoat.2004.04.078 ↗
13. Microstructure, texture, and thermal conductivity of single-layer and multilayer thermal barrier coatings of Y2O3-stabilized ZrO2 and Al2O3 made by physical vapor deposition10.1111/j.1551-2916.1999.tb20076.x ↗
14. La2O3-modified YSZ coatings: high-temperature stability and improved thermal barrier properties10.1016/j.surfcoat.2008.09.032 ↗
15. Low thermal conductivity and high temperature stability of ZrO2–Y2O3–La2O3 coatings produced by electron beam PVD10.1016/j.scriptamat.2003.12.008 ↗
16. Thermal conductivity and thermal cycle life of La2O3 and HfO2 doped ZrO2–Y2O3 coatings produced by EB-PVD10.1016/j.surfcoat.2009.01.033 ↗
17. Thermal stability of nanostructured 13wt.%Al2O3–8wt.%Y2O3–ZrO2 thermal barrier coatings10.1016/j.jeurceramsoc.2009.10.005 ↗
18. Microstructure and thermal properties of nanostructured 4wt.%Al2O3–YSZ coatings produced by atmospheric plasma spraying10.1007/s11666-010-9524-x ↗
19. X-ray residual stress measurement of laminated coating layers produced by plasma spraying10.1016/0257-8972(93)90201-X ↗
20. Finite element thermal stress solutions for thermal barrier coatings10.1016/0257-8972(87)90116-2 ↗
21. Effects of residual stress on the performance of plasma sprayed functionally graded ZrO2/NiCoCrAlY coatings10.1016/S0921-5093(99)00565-1 ↗
22. Comparison of thermal cycling behavior of plasma-sprayed nanostructured and traditional thermal barrier coatings10.1016/j.msea.2006.11.027 ↗