Torben, Fiedler and Rösler, Joachim and Bäker, Martin and Hötte, Felix and von Sethe, Christoph and Daub, Dennis and Haupt, Matthias and Haidn, Oskar and Esser, Burkard and Gülhan, Ali (2020) Mechanical Integrity of Thermal Barrier Coatings: Coating Development and Micromechanics. In: Future Space-Transport-System Components under High Thermal and Mechanical Loads Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 146. Springer. pp. 295-307. doi: 10.1007/978-3-030-53847-7_19. ISBN 978-3-030-53846-0.
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Official URL: https://link.springer.com/chapter/10.1007/978-3-030-53847-7_19
Abstract
To protect the copper liners of liquid-fuel rocket combustion chambers, a thermal barrier coating can be applied. Previously, a new metallic coating system was developed, consisting of a NiCuCrAl bond-coat and a Rene 80 top-coat, applied with high velocity oxyfuel spray (HVOF). The coatings are tested in laser cycling experiments to develop a detailed failure model, and critical loads for coating failure were defined. In this work, a coating system is designed for a generic engine to demonstrate the benefits of TBCs in rocket engines, and the mechanical loads and possible coating failure are analysed. Finally, the coatings are tested in a hypersonic wind tunnel with surface temperatures of 1350 K and above, where no coating failure was observed. Furthermore, cyclic experiments with a subscale combustion chamber were carried out. With a diffusion heat treatment, no large-scale coating delamination was observed, but the coating cracked vertically due to large cooling-induced stresses. These cracks are inevitable in rocket engines due to the very large thermal-strain differences between hot coating and cooled substrate. It is supposed that the cracks can be tolerated in rocket-engine application.
Item URL in elib: | https://elib.dlr.de/136981/ | ||||||||||||||||||||||||||||||||||||||||||||
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Document Type: | Contribution to a Collection | ||||||||||||||||||||||||||||||||||||||||||||
Title: | Mechanical Integrity of Thermal Barrier Coatings: Coating Development and Micromechanics | ||||||||||||||||||||||||||||||||||||||||||||
Authors: |
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Date: | 26 October 2020 | ||||||||||||||||||||||||||||||||||||||||||||
Journal or Publication Title: | Future Space-Transport-System Components under High Thermal and Mechanical Loads | ||||||||||||||||||||||||||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||||||||||||||||||||||||||
Open Access: | No | ||||||||||||||||||||||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||||||||||||||||||||||
In SCOPUS: | No | ||||||||||||||||||||||||||||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||||||||||||||||||||||||||||
Volume: | 146 | ||||||||||||||||||||||||||||||||||||||||||||
DOI: | 10.1007/978-3-030-53847-7_19 | ||||||||||||||||||||||||||||||||||||||||||||
Page Range: | pp. 295-307 | ||||||||||||||||||||||||||||||||||||||||||||
Editors: |
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Publisher: | Springer | ||||||||||||||||||||||||||||||||||||||||||||
Series Name: | Notes on Numerical Fluid Mechanics and Multidisciplinary Design | ||||||||||||||||||||||||||||||||||||||||||||
ISBN: | 978-3-030-53846-0 | ||||||||||||||||||||||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||||||||||||||||||||||
Keywords: | Thermal Barrier Coating, TBC, Rocket Combustion Chamber, Wind Tunnel Testing | ||||||||||||||||||||||||||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||||||||||||||||||||||||||
HGF - Program: | Space | ||||||||||||||||||||||||||||||||||||||||||||
HGF - Program Themes: | Space Transportation | ||||||||||||||||||||||||||||||||||||||||||||
DLR - Research area: | Raumfahrt | ||||||||||||||||||||||||||||||||||||||||||||
DLR - Program: | R RP - Space Transportation | ||||||||||||||||||||||||||||||||||||||||||||
DLR - Research theme (Project): | R - Wiederverwendbare Raumfahrtsysteme (old) | ||||||||||||||||||||||||||||||||||||||||||||
Location: | Köln-Porz | ||||||||||||||||||||||||||||||||||||||||||||
Institutes and Institutions: | Institute for Aerodynamics and Flow Technology > Supersonic and Hypersonic Technology | ||||||||||||||||||||||||||||||||||||||||||||
Deposited By: | Daub, Dennis | ||||||||||||||||||||||||||||||||||||||||||||
Deposited On: | 26 Nov 2020 12:05 | ||||||||||||||||||||||||||||||||||||||||||||
Last Modified: | 18 Oct 2023 13:47 |
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