Number of the records: 1
Microstructures and Thermal Cycling Properties of Thermal Barrier Coatings Deposited by Hybrid Water-Stabilized Plasma Torch
- 1.
SYSNO ASEP 0531744 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Microstructures and Thermal Cycling Properties of Thermal Barrier Coatings Deposited by Hybrid Water-Stabilized Plasma Torch Author(s) Mušálek, Radek (UFP-V) RID, ORCID
Tesař, Tomáš (UFP-V) ORCID
Medřický, Jan (UFP-V) RID
Lukáč, František (UFP-V) ORCID
Chráska, Tomáš (UFP-V) RID, ORCID
Gupta, M. (SE)Number of authors 6 Source Title Journal of Thermal Spray Technology. - : Springer - ISSN 1059-9630
Roč. 29, č. 3 (2020), s. 444-461Number of pages 18 s. Language eng - English Country US - United States Keywords hybrid plasma torch ; solution precursor spraying ; suspension spraying ; thermal barrier coatings (TBCs) ; thermal cycling ; water-stabilized plasma ; yttria-stabilized zirconia (YSZ) Subject RIV CI - Industrial Chemistry, Chemical Engineering OECD category Chemical process engineering Method of publishing Limited access Institutional support UFP-V - RVO:61389021 UT WOS 000514810600010 EID SCOPUS 85079518332 DOI 10.1007/s11666-020-00990-2 Annotation Hybrid water-stabilized plasma (WSP-H) torches provide high-enthalpy plasma which may be utilized for high-throughput and yet economical spraying of coatings from powders, suspensions, and solutions. It was previously demonstrated that microstructures and functional properties of the WSP-H coatings may be tailored to a wide extent for new applications, namely those requiring high coating thickness and/or coating of large components. In this study, applicability potential of WSP-H technology for spraying of novel thermal barrier coatings (TBCs) is demonstrated. WSP-H technology was used for spraying of yttria-stabilized zirconia (YSZ) top-coats from powder, suspension, and solution. Yttria content in the top-coat feedstock was 7-8 wt.%. In addition, gadolinium zirconate (Gd2Zr2O7-GZO) was sprayed from suspension for comparison. NiCrAlY bond-coat was also deposited by WSP-H, and Hastelloy-X alloy was used as substrate material. Microstructure, phase composition, and endurance of the deposited coatings in thermal cycling fatigue (TCF) test and during high-temperature short-term annealing were evaluated. All coatings showed excellent high-temperature stability and TCF resistance withstanding more than 650 cycles, surpassing some of the currently commercially used TBCs. Lifetime of the TBC with columnar top-coat deposited from YSZ suspension exceeded even more than 900 cycles. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2021 Electronic address https://link.springer.com/article/10.1007/s11666-020-00990-2
Number of the records: 1