Home > Publications database > Development of environmental barrier coatings for Al2O3/Al2O3 CMCs with improved Adhesion by texturing with laser ablation > print

001     860419
005     20240708132722.0
037 _ _ |a FZJ-2019-01189
041 _ _ |a English
100 1 _ |a Gatzen, Caren
|0 P:(DE-Juel1)169124
|b 0
|e Corresponding author
|u fzj
111 2 _ |a Thermal Barrier Coatings V
|c Irsee
|d 2018-06-24 - 2018-06-29
|w Germany
245 _ _ |a Development of environmental barrier coatings for Al2O3/Al2O3 CMCs with improved Adhesion by texturing with laser ablation
260 _ _ |c 2018
336 7 _ |a Conference Paper
|0 33
|2 EndNote
336 7 _ |a INPROCEEDINGS
|2 BibTeX
336 7 _ |a conferenceObject
|2 DRIVER
336 7 _ |a CONFERENCE_POSTER
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336 7 _ |a Output Types/Conference Poster
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336 7 _ |a Poster
|b poster
|m poster
|0 PUB:(DE-HGF)24
|s 1549381094_11543
|2 PUB:(DE-HGF)
|x Other
520 _ _ |a Al2O3 /Al2O3 ceramic matrix composites (CMC) are candidate materials for high-temperature applications such as gas turbines. As water vapor corrosion of oxide/oxide CMC is a major issue, the application of suitable environmental barrier coatings (EBC) is inevitable. Besides the gas tightness a good adhesion of the EBC is a crucial aspect for providing an effective barrier against the combustion atmosphere. Due to the brittleness of the ceramic matrix conventional surface treatments like grinding and sandblasting fail to increase roughness without causing damage to the substrate. Therefore there is a need for new methods of surface preparation of CMCs.This work examines the suitability of surface preparation with laser ablation for use prior to air plasma spraying (APS) on an oxide/oxide-CMC. Laser ablation allows controlling of the surface’s structure and roughness. The effects of different laser parameters on the alumina surface were examined and a variety of different structures, for example a honeycomb or a cauliflower like structure, were prepared.The laser treated surfaces were coated with potential EBC-candidates, such as Y2O3 and Gd2Zr2O7 and the impact of laser textures on the coating adhesion was examined. Evaluation of the coated samples was done by pull-off adhesion testing and thermal cycling. Results indicate that laser pretreatment helps to increase the adhesion strength of the EBC-system.
536 _ _ |a 113 - Methods and Concepts for Material Development (POF3-113)
|0 G:(DE-HGF)POF3-113
|c POF3-113
|f POF III
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700 1 _ |a Guillon, Olivier
|0 P:(DE-Juel1)161591
|b 1
|u fzj
700 1 _ |a Mack, Daniel Emil
|0 P:(DE-Juel1)129630
|b 2
|u fzj
700 1 _ |a Vassen, Robert
|0 P:(DE-Juel1)129670
|b 3
|u fzj
909 C O |o oai:juser.fz-juelich.de:860419
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910 1 _ |a Forschungszentrum Jülich
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910 1 _ |a Forschungszentrum Jülich
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910 1 _ |a Forschungszentrum Jülich
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913 1 _ |a DE-HGF
|l Energieeffizienz, Materialien und Ressourcen
|1 G:(DE-HGF)POF3-110
|0 G:(DE-HGF)POF3-113
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|v Methods and Concepts for Material Development
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914 1 _ |y 2019
920 _ _ |l yes
920 1 _ |0 I:(DE-Juel1)IEK-1-20101013
|k IEK-1
|l Werkstoffsynthese und Herstellungsverfahren
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920 1 _ |0 I:(DE-82)080011_20140620
|k JARA-ENERGY
|l JARA-ENERGY
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980 _ _ |a poster
980 _ _ |a VDB
980 _ _ |a I:(DE-Juel1)IEK-1-20101013
980 _ _ |a I:(DE-82)080011_20140620
980 _ _ |a UNRESTRICTED
981 _ _ |a I:(DE-Juel1)IMD-2-20101013

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