High temperature preparation of advanced refractory materials by inductively coupled plasma in controlled atmosphere
Project ID:*19-14339S
Provider:Czech Science Foundation
Period:Jan 01, 2019 - Dec 31, 2021
Recipient - coordinatorInstitute of Plasma Physics, Czech Academy of Sciences, Prague
Principal Investigator:Ing. Tomáš Chráska, Ph.D.
Co-recepient(s) / PI(s):Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University, Prague -- Ing. Ondřej Kovářík Ph.D.
Co-investigators from IPPF. Lukáč, J. Čížek, J. Klečka, J. Matějíček, R. Mušálek, M. Vilémová, . Csáki

Aims of the project: Plasma facing components of nuclear fusion devices have to withstand the effects of hot plasma and neutron radiation, while maintaining their mechanical properties and safety requirements. Advanced tungsten-based refractory components are developed for their potential to meet these often contradictory requirements in the form of alloys, composites, and graded layers. These materials are in the state of early development and are produced purely by laboratory methods. The RF-ICP (inductively coupled plasma) technology is a scalable preparation technique that can overcome the limitations of existing routes. Thanks to deposition in a controlled atmosphere, oxidation is eliminated. Axial powder feeding allows direct and unique possibility to form tungsten alloys and composites, which can be formed into graded layers and components with advanced properties. Comprehensive diagnostics will bring deeper understanding of the deposition process and linkage between process parameters and coating characteristics, and will enable the preparation of tungsten-based materials with desired properties.