Enhanced properties of Al-modified EB-PVD 7YSZ thermal barrier coatings
Source abstract
Abstract
7 wt% yttria-stabilized zirconia (7YSZ) thermal barrier coating (TBC) prepared by electron beam-physical vapor deposition (EB-PVD) has been used in gas turbine engines for many years, where the TBC must successfully withstands the damage caused by a variety of environmental and mechanical aspects. The primary failure modes for TBC are oxidation of bond coating, particle erosion and CMAS (calcium-magnesium-alumina-silicates) corrosion. The lifetime of TBC associated with above three failure factors will be reduced significantly. In order to prolong the operation time, an alternative approach depositing Al film on 7YSZ TBC surface by magnetron sputtering is proposed. An α-Al2O3 overlay was in-situ synthesized on each 7YSZ column through reaction of Al and ZrO2 during vacuum heat treatment. And the results indicate that the Al-modified EB-PVD 7YSZ TBC shows better oxidation resistance, as well as lower particulate erosion and CMAS corrosion.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: High-Temperature Coating Behaviors · Nuclear Materials and Properties · Metal and Thin Film Mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (34)
Show source-provided references
1. Thermal cyclic oxidation performance of plasma sprayed zirconia thermal barrier coatings with modified high velocity oxygen fuel sprayed bond coatings10.1016/j.surfcoat.2012.10.004 ↗
2. Microstructure and thermal shock resistance of the peg-nail structured TBCs treated by selective laser modification10.1016/j.apsusc.2014.08.084 ↗
3. Compiled furnace cyclic lives of EB-PVD thermal barrier coatings10.1016/j.surfcoat.2015.06.018 ↗
4. Mechanisms controlling the durability of thermal barrier coatings10.1016/S0079-6425(00)00020-7 ↗
5. Effect of microstructure and temperature on the erosion rates and mechanisms of modified EB PVD TBCs10.1016/j.wear.2009.04.002 ↗
6. A delamination mechanism for thermal barrier coatings subject to calcium–magnesium–alumino-silicate (CMAS) infiltration10.1016/j.actamat.2004.11.028 ↗
7. Microstructure and oxidation behavior of NiCoCrAl/YSZ microlaminates produced by EB–PVD10.1016/j.matchar.2011.07.018 ↗
8. Scaling laws governing the erosion and impact resistance of thermal barrier coatings10.1016/j.wear.2005.05.005 ↗
9. In situ synthesis of α-alumina layer on thermal barrier coating for protection against CMAS (CaO-MgO-Al2O3-SiO2) corrosion10.1016/j.surfcoat.2014.11.064 ↗
10. Cyclic oxidation behavior of Hf/Zr co-doped EB-PVD β-NiAl coatings at 1200°C10.1016/j.surfcoat.2015.05.039 ↗
11. High-temperature oxidation and hot-corrosion behaviour of EB-PVD β-NiAlDy coatings10.1016/j.corsci.2010.11.041 ↗
12. Evaluation of stress distribution and failure mechanism in lanthanum–titanium–aluminum oxides thermal barrier coatings10.1016/j.ceramint.2012.12.006 ↗
13. Influence of bondcoat pre-treatment and surface topology on the lifetime of EB-PVD TBCs10.1016/S0257-8972(02)00726-0 ↗
14. The effect of pre-oxidation atmosphere on the durability of EB-PVD thermal barrier coatings with CoNiCrAlY bond coats10.1016/j.surfcoat.2007.10.001 ↗
15. Erosion of gadolinia doped EB-PVD TBCs10.1016/j.surfcoat.2006.03.022 ↗
16. Degradation of La2Zr2O7 and other novel EB-PVD thermal barrier coatings by CMAS (CaO–MgO–Al2O3–SiO2) and volcanic ash deposits10.1016/j.surfcoat.2013.07.029 ↗
17. Porosity-property relationship of plasma sprayed Ga2Zr2O7/YSZ thermal barrier coatings10.1111/jace.13611 ↗
18. Effect of oxygen content in NiCoCrAlY bondcoat on the lifetime of EB-PVD and APS thermal barrier coatings10.1016/j.surfcoat.2013.01.054 ↗
19. Effect of microstructure and temperature on the erosion rates and mechanisms of modified EB PVD TBCs10.1016/j.wear.2009.04.002 ↗
20. The erosion of EB-PVD thermal barrier coatings: the competition between mechanisms10.1016/j.wear.2009.12.020 ↗
21. The thermal behavior of CMAS-infiltrated thermal barrier coatings10.1016/j.surfcoat.2015.03.043 ↗
22. Composition effects of thermal barrier coating ceramics on their interaction with molten Ca–Mg–Al–silicate (CMAS) glass10.1016/j.actamat.2012.06.053 ↗
23. In situ synthesis of α-alumina layer at top yttrium-stablized thermal barrier coatings for oxygen barrier10.1016/j.ceramint.2014.04.118 ↗
24. In situ synthesis of α-alumina layer on thermal barrier coating for protection against CMAS (CaO-MgO-Al2O3-SiO2) corrosion10.1016/j.surfcoat.2014.11.064 ↗
25. Effect of Al-deposition on erosion resistance of plasma sprayed thermal barrier coating10.1016/S1003-6326(15)63879-1 ↗
26. Electrophoretically deposited alumina as protective overlay for thermal barrier coatings against CMAS degradation10.1016/j.surfcoat.2009.09.055 ↗
27. Computational model for predicting coating thickness in electron beam physical vapor deposition10.1016/S1526-6125(05)70091-8 ↗
28. Study on the reaction mechanism and mechanical properties of aluminum matrix composites fabricated in an Al-ZrO2-B system10.1016/j.matchemphys.2011.01.055 ↗
29. A new in situ composite fabricated by powder metallurgy with aluminum and nanocrystalline ZrO2 particles10.1023/A:1006780608743 ↗
30. Influence of isothermal and cyclic oxidation on the apparent interfacial toughness in thermal barrier coating systems10.1016/j.jeurceramsoc.2015.07.018 ↗
31. The formation model of Ni-Cr oxides on NiCoCrAlY-sprayed coating10.1016/j.apsusc.2011.02.044 ↗
32. The growth and influence of thermally grown oxide in a thermal barrier coating10.1016/j.surfcoat.2006.01.023 ↗
33. The erosion of EB-PVD thermal barrier coatings: the competition between mechanisms10.1016/j.wear.2009.12.020 ↗
34. Some observations on erosion mechanisms of EB-PVD TBCs10.1016/S0043-1648(00)00391-4 ↗