Tungsten-steel and tungsten-chromium composites prepared by RF plasma spraying

0534916 - ÚFP 2021 RIV CZ eng C - Conference Paper (international conference)
Matějíček, Jiří - Klečka, Jakub - Čížek, Jan - Veverka, Jakub - Vilémová, Monika - Chráska, Tomáš - Ganesh, V.
Tungsten-steel and tungsten-chromium composites prepared by RF plasma spraying.
Proceedings 29th International Conference on Metallurgy and Materials. Ostrava: Tanger, 2020, s. 756-763. ISBN 978-80-87294-97-0.
[29th International Conference on Metallurgy and Materials. Brno (CZ), 20.05.2020-22.05.2020]
R&D Projects: GA ČR(CZ) GA19-14339S
EU Projects: European Commission(XE) 633053 - EUROfusion
Institutional support: RVO:61389021
Keywords : tungsten * composites * RF plasma spraying
OECD category: Materials engineering
https://www.confer.cz/metal/2020/read/3548-tungsten-steel-and-tungsten-chromium-composites-prepared-by-rf-plasma-spraying.pdf

For future fusion reactors, materials able to withstand harsh environments are needed. In particular, this concerns the plasma-facing components which are foreseen to consist of tungsten based plasma-facing armor and structural and cooling part made of steel. Currently, joining of these materials presents a significant challenge. The stress concentration at their interface, which arises due to thermal exposure and the difference in thermal and mechanical properties, can be reduced by composite/graded interlayers. Plasma spraying is among the prospective technologies for their preparation. In this work, tungsten-steel and tungsten-chromium composites were prepared by radio-frequency inductively coupled plasma (RF-ICP) spraying. Initial optimization of the spraying process for pure materials as well as their mixtures was carried out. Basic characterization of the layers for their structure, porosity and composition is presented.
Permanent Link: http://hdl.handle.net/11104/0313054