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Srikanth H.V., Fareen Nizami
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- Associate Professor, Assistant Professor, Research Scholar,, Department of Aeronautical Engineering, Nitte Meenakshi Institute of Technology, Department of Aeronautical Engineering, Nitte Meenakshi Institute of Technology, epartment of Mechanical Engineering, NITK, Karnataka, Karnataka, Tamil Nadu, India, India, India
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Abstract
nThe gas turbine blades play a crucial role in harnessing energy from the high-temperature and highpressure
gas generated by the combustor. To withstand this challenging environment, turbine blades
often employ super-alloys and incorporate new manufacturing technologies such as Direct
Solidification (DS) and Single Crystal (SC). Additionally, the development of advanced ceramic
Thermal Barrier Coating (TBC) is imperative to achieve higher operating temperatures (>1200°C).
Therefore, the primary focus of this study is on advancing TBC with reduced thermal conductivity and
increased operating temperature, without imposing a significant weight penalty on components. Two
sample specimens, measuring 75 mm × 75 mm × 10 mm, were manufactured from SS 316L and 8%
Yttrium Stabilized Zirconia (YSZ-ZrO2.Y2O3), as well as 8% Yttria Stabilized Alumina (YSAAl2O3.
Y2O3). These specimens were coated with a bond coat of Nickel Chromite (NiCr) using the
Atmospheric Plasma Spray Method (APS). The temperature variations across a 250 μm layer of 8%
YSZ and 8% YSA were analyzed through both simulation and thermo-mechanical tests. This analysis
aims to elucidate the efficacy of TBC materials in enhancing the operational limits of components
subjected to elevated temperatures, particularly in aerospace and automobile applications.
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Keywords: Thermal Barrier Coating, Yttrium Stabilized Zirconia, Yttrium Stabilized Alumina. plasma spray method, heat transfer, turbine blades
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References
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| Volume | 11 |
| [if 424 equals=”Regular Issue”]Issue[/if 424][if 424 equals=”Special Issue”]Special Issue[/if 424] [if 424 equals=”Conference”][/if 424] | 13 |
| Received | December 11, 2023 |
| Accepted | January 18, 2024 |
| Published | January 26, 2024 |
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