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Effects of Thermal Exposure on Microstructure of Thermal Barriers Deposited by Hybrid Plasma Spraying
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SYSNO ASEP 0581976 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Effects of Thermal Exposure on Microstructure of Thermal Barriers Deposited by Hybrid Plasma Spraying Author(s) Mušálek, Radek (UFP-V) RID, ORCID
Tesař, Tomáš (UFP-V) ORCID
Medřický, Jan (UFP-V) RID
Lukáč, František (UFP-V) ORCID
Dudík, Jonáš (UFP-V)Number of authors 5 Source Title Thermal Spray 2023: Proceedings from the International Thermal Spray Conference. - Québec City : ASM International, 2023 - ISBN 978-1-62708-453-6 Pages s. 422-427 Number of pages 6 s. Publication form Online - E Action International Thermal Spray Conference Event date 22.05.2023 - 25.05.2023 VEvent location Quebec City Country CA - Canada Event type WRD Language eng - English Country CA - Canada Keywords hybrid plasma spraying ; thermal barrier ; microstructure Subject RIV JP - Industrial Processing OECD category Materials engineering Institutional support UFP-V - RVO:61389021 DOI 10.31399/asm.cp.itsc2023p0422 Annotation Hybrid plasma spraying combines plasma spraying of dry powders and liquids (suspensions and solutions). Combination of these two approaches allows deposition of microstructures consisting of both conventional coarse and ultrafine splats. Moreover, splats with dissimilar size may have also different chemistry. Such combination is potentially interesting for many fields of thermal spraying, including thermal barrier coatings (TBCs), as novel microstructures may be economically and relatively easily obtained. The technology has recently reached a level, where coatings with interesting hybrid microstructures may be reliably deposited, so that their potential for practical applications may be evaluated. In this study, first experimental TBCs with YSZ-based hybrid topcoat were deposited by hybrid water/argon stabilized plasma (WSP-H) technology. Al2O3 and YAG were selected as secondary phase deposited from suspension as both provide strong materials contrast in scanning electron microscope (SEM) so they can be used as “markers” in the coating microstructure. Samples were exposed to thermal cycling simulating in-service TBC conditions in order to test their thermal shock resistance. Changes of the coating microstructure were studied by SEM analysis and X-ray diffraction. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2024 Electronic address https://dl.asminternational.org/itsc/proceedings-abstract/ITSC2023/84536/422/26340
Number of the records: 1