Počet záznamů: 1
On tungsten spraying using inductively coupled plasma system - First results
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SYSNO ASEP 0498210 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název On tungsten spraying using inductively coupled plasma system - First results Tvůrce(i) Klečka, Jakub (UFP-V) ORCID
Mušálek, Radek (UFP-V) RID, ORCID
Vilémová, Monika (UFP-V) RID, ORCID
Lukáč, František (UFP-V) ORCIDCelkový počet autorů 4 Zdroj.dok. METAL 2017: 26th International Conference on Metallurgy and Materials: abstracts. - Ostrava : Tanger Ltd., 2017 - ISBN 978-80-87294-73-4 Rozsah stran s. 1321-1326 Poč.str. 6 s. Forma vydání Tištěná - P Akce 26th International Conference on Metallurgy and Materials Datum konání 24.05.2017 - 26.05.2017 Místo konání Brno Země CZ - Česká republika Typ akce EUR Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova Radio frequency inductively coupled plasma torch ; tungsten ; plasma facing components ; plasma spraying Vědní obor RIV JG - Hutnictví, kovové materiály Obor OECD Materials engineering CEP GA17-23154S GA ČR - Grantová agentura ČR Institucionální podpora UFP-V - RVO:61389021 UT WOS 000434346900212 EID SCOPUS 85043388312 Anotace Thanks to its unique properties such as high melting point and density, tungsten and tungsten-based alloys are commonly used in a wide range of applications. Among others, these materials are promising candidates for the plasma facing components in the future fusion reactors. One of considered ways of production of these parts is plasma spraying. There are however several limitations for conventional gas stabilized torches, mainly in plasma enthalpy (i.e. the ability to efficiently melt tungsten particles in considerable feed rates) and susceptibility of tungsten to oxidation (which complicates spraying in oxidizing open-air atmosphere). The radio frequency inductively coupled plasma torch (RF-ICP) is a unique system which can potentially overcome both these problems and can be used for efficient tungsten spraying. The tungsten powder, which can be finer than the one used for the conventional systems, is fed axially into the hot plasma core, both factors lead to a more efficient melting of the particles. The deposition is performed in a chamber with controlled atmosphere of inert gas or decreased pressure, the oxidation is therefore suppressed. In this first study carried out with the newly commissioned RF-ICP system TekSpray 15 (Tekna), samples of tungsten coatings on graphite substrates were prepared. The X-ray diffraction and SEM images of the free surfaces and cross-sections were obtained, documenting high purity of the deposits and appropriate flattening of the splats leading to a dense coating microstructure. The effect of substrate preheating on the microstructure, porosity and hardness was also studied. Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2019
Počet záznamů: 1