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Methods of Increasing Thermal Conductivity of Plasma Sprayed Tungsten-Based Coatings
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SYSNO ASEP 0335082 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Methods of Increasing Thermal Conductivity of Plasma Sprayed Tungsten-Based Coatings Title Metody zvyšování tepelné vodivosti plazmových nástřiků na bázi wolframu Author(s) Matějíček, Jiří (UFP-V) RID, ORCID
Iždinský, K. (SK)
Vondrouš, P. (CZ)Source Title Advanced Materials Research. - Uetikon-Zuerich : Trans Tech Publications / Pullin R. - ISSN 1022-6680
Roč. 59, - (2009), s. 82-86Number of pages 5 s. Action International Conference on New Materials for Extreme Environments/1st./ Event date 02.06.2008-04.06.2008 VEvent location San Sebastian Country ES - Spain Event type WRD Language eng - English Country CH - Switzerland Keywords Extreme environments ; fusion materials ; plasma sprayed coatings ; thermal conductivity Subject RIV JG - Metallurgy CEZ AV0Z20430508 - UFP-V (2005-2011) UT WOS 000265407900013 Annotation Tungsten is the main candidate material for the armor of plasma facing components for ITER and future fusion devices. Plasma spraying is an alternative method for manufacturing tungsten-based coatings, including composites and graded layers, having a number of advantageous features. On the other hand, the main limitation to application of these coatings on high heat flux components, is their low thermal conductivity, originating in the layered structure. This paper is focused on four methods of improving the coatings’ thermal conductivity. First method consists in modification of the basic spraying parameters, which have a direct influence on the coating structure and therefore properties. The other three methods involve post-processing of the coatings: molten copper infiltration, laser remelting and densification by HIPping. The latter encompasses also tungsten-copper composites of various compositions. Experimental results, including structural and thermal characterization, Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2010
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