Institute of Plasma Physics - project detail 00211

Stability of the interfaces in advanced tungsten materials for high temperature environments
Project ID:	GA17-23154S
Provider:	Czech Science Foundation
Period:	Jan 01, 2017 - Dec 31, 2019
Principal Investigator:	Ing. Jiří Matějíček, Ph.D.
Co-investigators	M. Vilémová, B. Nevrlá, T. Chráska, K. Illková, J. Veverka, J. Klečka, F. Lukáč
Aims of the project: Tungsten is a prime candidate for application in plasma facing components of future fusion power plant. Besides high melting point, tungsten has the advantage of low sputtering yield and low tritium retention. On the other hand, among the most serious tungsten disadvantages belongs high ductile to brittle transition temperature, degradation of mechanical properties at high temperatures and formation of WO3 in presence of oxygen. Thus, various tungsten alloys and tungsten with particle dispersion are currently developed with the aim to improve tungsten properties. The advanced tungsten materials will be used as the innermost wall of fusion vessel and thus will have to be joined to structural materials of the device. The resulting structure will be very complex and will contain interfaces of various characters - e.g. the interface between the advanced tungsten and structural material and high density of interfaces within the advanced multiphase tungsten materials. The purpose of this project is to study stability of the interfaces at steady state and transient heat loading.
Results:
Matějíček J., Mušálek R., Dlabáček Z., Klevarová V., Kocmanová L.: Processing and Properties of Tungsten-Steel Composites and FGMs Prepared by Spark Plasma Sintering. Materials 15 [24] (2022) č. článku 9037. E. [ Abstract ] [ Link ]
Ganesh V., Dorow-Gerspach D., Heuer S., Matějíček J., Vilémová M., Bram M., Coenen J.W., Wirtz M., Pintsuk G., Theisen W., Linsmeier Ch.: Manufacturing of W-steel joint using plasma sprayed graded W/steel-interlayer with current assisted diffusion bonding. Fusion Engineering and Design 172 [November] (2021) č. článku 112896. [ Abstract ] [ Link ]
Matějíček J., Antoš J., Rohan P.: W plus Cu and W plus Ni Composites and FGMs Prepared by Plasma Transferred Arc Cladding. Materials 14 [4] (2021) č. článku 789. E. [ Abstract ] [ Link ]
Matějíček J., Veverka J., Yin C., Vilémová M., Terentyev D., Wirtz M., Gago M., Dubinko A., Hadraba H.: Spark plasma sintered tungsten – mechanical properties, irradiation effects and thermal shock performance. Journal of Nuclear Materials 542 [December] (2020) č. článku 152518. [ Abstract ] [ Link ]
Heuer S., Coenen J.W., Pintsuk G., Matějíček J., Vilémová M., Linsmeier Ch.: Overview of challenges and developments in joining tungsten and steel for future fusion reactors. Physica Scripta 2020 [January] (2020) č. článku 014028. [ Abstract ] [ Link ]
Terentyev D., Vilémová M., Yin C., Veverka J., Dubinko A., Matějíček J.: Assessment of mechanical properties of SPS-produced tungsten including effect of neutron irradiation. International Journal of Refractory Metals & Hard Materials 89 (2020) č. článku 105207. [ Abstract ] [ Link ]
Heuer S., Matějíček J., Vilémová M., Koller M., Illková K., Veverka J., Weber T., Pintsuk G., Coenen J.W., Linsmeier Ch.: Atmospheric plasma spraying of functionally graded steel/tungsten layers for the first wall of future fusion reactors. Surface and Coatings Technology 366 [25 May 2019] (2019) 170-178. [ Abstract ] [ Link ]
Matějíček J., Mušálek R., Veverka J.: Materials and processing factors influencing stress evolution and mechanical properties of plasma sprayed coatings. Surface and Coatings Technology 371 [15 August 2019] (2019) 3-13. [ Abstract ] [ Link ]
Matějíček J., Vilémová M., Veverka J., Kubásek J., Lukáč F., Novák P., Preisler D., Stráský J., Weiss Z.: On the Structural and Chemical Homogeneity of Spark Plasma Sintered Tungsten. Metals 9 [8] (2019) č. článku 879. [ Abstract ] [ Link ]
Matějíček J., Vilémová M., Moskal D., Mušálek R., Krofta J., Janata M., Kutílek Z., Klečka J., Heuer S., Martan J., Nardozza E., Houdková Š., Dorow-Gerspach D.: The Role of Laser Texturing in Improving the Adhesion of Plasma Sprayed Tungsten Coatings. Journal of Thermal Spray Technology 28 [7] (2019) 1346-1362. [ Abstract ] [ Link ]
Čížek J., Vilémová M., Lukáč F., Koller M., Kondás J., Singh R.: Cold Sprayed Tungsten Armor for Tokamak First Wall. Coatings 9 [12] (2019) č. článku 836. [ Abstract ] [ Link ]
Vilémová M., Lukáč F., Veverka J., Illková K., Matějíček J.: Controlling the carbide formation and chromium depletion in W-Cr alloy during field assisted sintering. International Journal of Refractory Metals & Hard Materials 79 (2019) 217-223. [ Abstract ] [ Link ]
Čížek J., Klečka J., Vilémová M., Matějíček J., Veverka J., Mušálek R., Lukáč F., Kondás J., Zlatník R.: Armor W-Cr coatings for plasma-facing components in tokamaks by cold spray and RF-ICP. Proceedings of the International Thermal Spray Conference. 2019, s. 535-540. ISBN 9781510888005. [ Abstract ] [International Thermal Spray Conference and Exposition: New Waves of Thermal Spray Technology for Sustainable Growth. Yokohama (JP), 26.05.2019-29.05.2019]
Yin C., Terentyev D., Pardoen T., Bakaeva A., Petrov R., Antusch S., Rieth M., Vilémová M., Matějíček J., Zhang T.: Tensile properties of baseline and advanced tungsten grades for fusion applications. International Journal of Refractory Metals & Hard Materials 75 [September] (2018) 153-162. [ Abstract ] [ Link ]
Heuer S., Weber T., Pintsuk G., Coenen J.W., Matějíček J., Linsmeier Ch.: Aiming at understanding thermo-mechanical loads in the first wall of DEMO: Stress–strain evolution in a Eurofer-tungsten test component featuring a functionally graded interlayer. Fusion Engineering and Design 135 [October] (2018) 141-153. [ Abstract ] [ Link ]
Tanure L., Bakaeva A., Lapeire L., Terentyev D., Vilémová M., Matějíček J., Verbeken K.: Nano-hardness, EBSD analysis and mechanical behavior of ultra-fine grain tungsten for fusion applications as plasma facing material. Surface and Coatings Technology 355 (2018) 252-258. [ Abstract ] [ Link ] [International Conference on Surface Modification of Materials by Ion Beams. Lisbon, 09.07.2017-14.07.2017]
Klečka J., Matějíček J., Čížek J., Medřický J., Zlatník R.: Vliv výkonu hořáku a tlaku plynu na vlastnosti RF-ICP wolframových nástřiků. Vrstvy a povlaky 2018. Trenčianska Teplá: M-Press, 2018. ISBN 978-80-972133-3-6. [Vrstvy a povlaky 2018. Rožnov pod Radhoštěm (CZ), 22.10.2018-23.10.2018]
Medřický J., Klečka J., Čížek J., Kovářík O., Matějíček J.: Měření teploty a rychlosti wolframových částic u systému s indukčně vázaným plazmatem. Vrstvy a povlaky 2018. Trenčianska Teplá: M-Press, 2018. ISBN 978-80-972133-3-6. [Vrstvy a povlaky 2018. Rožnov pod Radhoštěm (CZ), 22.10.2018-23.10.2018]
Klečka J., Mušálek R., Vilémová M., Lukáč F.: On tungsten spraying using inductively coupled plasma system - First results. METAL 2017: 26th International Conference on Metallurgy and Materials: abstracts. Ostrava: Tanger Ltd., 2017, s. 1321-1326. ISBN 978-80-87294-73-4. [ Abstract ] [26th International Conference on Metallurgy and Materials. Brno (CZ), 24.05.2017-26.05.2017]