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High Temperature Cycling Behavior of Novel Thermal Barrier Coatings Deposited by High Enthalpy Plasma Torch
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SYSNO ASEP 0555665 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title High Temperature Cycling Behavior of Novel Thermal Barrier Coatings Deposited by High Enthalpy Plasma Torch Author(s) Mušálek, Radek (UFP-V) RID, ORCID
Tesař, Tomáš (UFP-V) ORCID
Medřický, Jan (UFP-V) RID
Lima, R. S. (CA)Number of authors 4 Source Title Thermal Spray 2021: Proceedings from the International Thermal Spray Conference. - Materials Park : ASM International, 2021 - ISBN 9781713831303 Pages s. 688-694 Number of pages 7 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 plasma torch ; 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.itsc2021p0688 Annotation Hybrid water/argon-stabilized plasma (WSP-H) torch may be used for efficient large-scale deposition of coatings from various types of feedstocks, i.e. coarse dry powders, suspensions, and solutions. This study presents results of recent thermal cycling experiments of several novel thermal barrier coatings (TBCs) deposited by WSP-H torch on nickel-based superalloy with NiCrAlY bond-coat. Top-coats with different designs of microstructures deposited from YSZ suspension and YSZ powder were successfully prepared and tested by thermal cycling fatigue (TCF) tests. In addition to that, “Quadlayer” coating with layered top-coat consisting of three sublayers: i) yttria stabilized zirconia (YSZ) deposited from solution, ii) gadolinium zirconate (GZO) deposited from suspension, and iii) yttrium aluminum garnet (YAG) overlayer deposited from suspension was also successfully prepared, tested by TCF test and with advanced laser-rig setup exposing the TBC layer to very high temperature (>1500 °C) combined with considerable thermal gradient. Obtained results clearly show potential of WSP-H technology for novel TBC applications where, e.g., protection of large components and/or deposition of thick coatings are desirable. 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%202021/83881/688/16861
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