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Microstructure and microhardness evaluation fornicraly materials manufactured by spark plasmasintering and plasma spraying
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SYSNO ASEP 0538127 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Microstructure and microhardness evaluation fornicraly materials manufactured by spark plasmasintering and plasma spraying Author(s) Hulka, Iosif (UFP-V) ORCID
Mušálek, Radek (UFP-V) RID, ORCID
Lukáč, František (UFP-V) ORCID
Klečka, Jakub (UFP-V) ORCID
Chráska, Tomáš (UFP-V) RID, ORCIDNumber of authors 5 Source Title Acta Polytechnica. - : České vysoké učení technické - ISSN 1210-2709
Roč. 27, Červen (2020), s. 13-17Number of pages 5 s. Language eng - English Country CZ - Czech Republic Keywords microhardness ; microstructure ; lasma spraying ; spark plasma sintering ; NiCrAlY Subject RIV JP - Industrial Processing OECD category Materials engineering R&D Projects GA19-10246S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support UFP-V - RVO:61389021 DOI 10.14311/APP.2020.27.0013 Annotation NiCrAlY deposited by different thermal spraying methods is commonly used as thebond coat material in thermal barrier coatings (TBCs). In the present study, two experimentalcoatings were deposited by hybrid water stabilized plasma (WSP-H) and radio frequency inductivelycoupled plasma (RF-ICP) using the same feedstock powder. Spark plasma sintering (SPS) was used tomanufacture a compact NiCrAlY from the same feedstock powder as a reference material. Microstructure,internal oxidation, phase characterization and quantification of the mechanical behaviour in termsof microhardness were studied. The investigations clearly showed microstructural and mechanicaldifferences between the NiCrAlY samples manufactured by different plasma technologies. The resultsconfirmed that SPS and RF-ICP provide dense structures with no oxides due to the fabrication underprotective atmosphere and similar mechanical properties. Thus, RF-ICP may be used for deposition ofvery dense coatings with microstructure and hardness comparable to compacted materials prepared bySPS Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2021 Electronic address https://ojs.cvut.cz/ojs/index.php/APP/article/view/6662/5719
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