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High-temperature performance of self-healing SiC-YSZ thermal barrier coatings deposited by using various plasma spray concepts
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SYSNO ASEP 0555663 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title High-temperature performance of self-healing SiC-YSZ thermal barrier coatings deposited by using various plasma spray concepts Author(s) Hassanzadeh, M. (IR)
Sokołowski, P. (PL)
Mušálek, Radek (UFP-V) RID, ORCID
Medřický, Jan (UFP-V) RID
Csáki, Štefan (UFP-V) ORCIDNumber of authors 5 Source Title Thermal Spray 2021: Proceedings from the International Thermal Spray Conference. - Materials Park : ASM International, 2021 - ISBN 9781713831303 Pages s. 18-22 Number of pages 5 s. Publication form Online - E Action International Thermal Spray Conference 2021 Event date 24.05.2021 - 28.05.2021 VEvent location online Country CZ - Czech Republic Event type WRD Language eng - English Country US - United States Keywords SiC-YSZ ; thermal barrier ; coatings Subject RIV JH - Ceramics, Fire-Resistant Materials and Glass OECD category Ceramics R&D Projects GA19-10246S GA ČR - Czech Science Foundation (CSF) Institutional support UFP-V - RVO:61389021 DOI 10.31399/asm.cp.itsc2021p0018 Annotation In this study, a novel self-healing concept is considered in order to increase the lifetime of thermal barrier coatings (TBCs) in modern gas turbines. For that purpose, SiC healing particles were introduced to conventional 8YSZ topcoats by using various plasma spray concepts, i.e., composite or multilayered coatings. All topcoats were sprayed by SG-100 plasma torch on previously deposited NiCrAlY bondcoats produced by conventional atmospheric plasma spraying. Coatings were subjected to thermal conductivity measurements by laser flash method up to 1000°C, isothermal oxidation testing up to 200h at 1100°C and finally thermal cyclic fatigue (TCF) lifetime testing at 1100°C. Microstructural coating evaluation was performed by scanning electronic microscope (SEM), in the as-produced and post high-temperature tested states. This was done to analyze the self-healing phenomena and its influence on the high-temperature performance of the newly developed TBCs. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2022 Electronic address https://dl.asminternational.org/itsc/proceedings-abstract/ITSC%202021/83881/18/16768
Number of the records: 1