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Plasma spraying of tungsten carbide – cobalt coatings by the water-stabilized system WSP
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SYSNO ASEP 0310211 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Plasma spraying of tungsten carbide – cobalt coatings by the water-stabilized system WSP Title Plazmové nástřiky na bázi wolfram karbid – kobalt připravené pomocí WSP technologie Author(s) Ctibor, Pavel (UFP-V) RID, ORCID
Kašparová, M. (CZ)
Bellin, J. (FR)
Le Guen, E. (FR)Source Title Thermal spray crossing boarders (ITSC 2008)- Proceedings. - Duesseldorf : ASM International, 2008 / Lugscheider E. - ISBN 978-3-87155-979-2 Pages 08-0519-08-0519 Number of pages 12 kB Publication form CD-ROM - CD-ROM Action International Thermal Spray Conference 2008 Event date 02.06.2008-04.06.2008 VEvent location Maastricht Country NL - Netherlands Event type WRD Language eng - English Country DE - Germany Keywords Plasma spraying ; tungsten carbide - cobalt ; wear resistance ; mechanical testing Subject RIV JH - Ceramics, Fire-Resistant Materials and Glass R&D Projects 1QS200430560 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z20430508 - UFP-V (2005-2011) Annotation Tungsten carbide – cobalt powders (WC-17wt.%Co) were plasma sprayed by a water-stabilized system WSP. A matrix of experiments with variable feeding distances and spray distances was carried out. Thinner coatings were carried out on carbon steel substrates and thicker coatings on stainless steel substrates to compare fast cooling conditions – the former with slower cooling conditions. Basic characterization of coatings was done by XRD, SEM and light microscopy plus image analysis. Microhardness was measured on polished cross sections. The main focus of investigation was on resistances against wear in dry as well as wet conditions. The appropriate tests were performed with set-ups based on ASTM G65 and G75, respectively. The influence of spray parameters onto coating wear performance was observed. The results of mechanical tests are discussed in connection with changes of phase composition and with the character of the coating’s microstructure. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2009
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