A5048167209- Advanced materials and composites
- Fusion materials and technologies
- Nuclear Materials and Properties
- Metal and Thin Film Mechanics
- High-Temperature Coating Behaviors
- Advanced ceramic materials synthesis
- Metal Alloys Wear and Properties
- Nuclear materials and radiation effects
- Aluminum Alloys Composites Properties
- MXene and MAX Phase Materials
- High Entropy Alloys Studies
- Liquid Crystal Research Advancements
- Ferroelectric and Piezoelectric Materials
- transportation and logistics systems
- Laser Applications in Dentistry and Medicine
- Intermetallics and Advanced Alloy Properties
- biodegradable polymer synthesis and properties
- Semiconductor materials and devices
- Bone Tissue Engineering Materials
- Transport and Logistics Innovations
- Concrete and Cement Materials Research
- Food Chemistry and Fat Analysis
- Recycling and utilization of industrial and municipal waste in materials production
- Aerospace Engineering and Applications
- Dyeing and Modifying Textile Fibers
Czech Academy of Sciences, Institute of Plasma Physics
2016-2024
Czech Technical University in Prague
2016-2023
Tungsten-based materials are the prime candidate plasma-facing for future fusion reactors, such as DEMO. Spark plasma sintering is a prospective fabrication technology with several advantageous features. The concurrent application of electric current, temperature and pressure enhances process, allowing lower temperatures shorter times than traditional powder metallurgy processes. This in turn helps to avoid excessive grain growth phase segregation W-alloys. study focused on factors that may...
We report on an ultrarapid (6 s) consolidation of binder-less WC using a novel Ultrahigh temperature Flash Sintering (UFS) approach. The UFS technique bridges the gap between electric resistance sintering (≪1 and flash spark plasma (20–60 s). Compared to well-established sintering, proposed approach results in improved energy efficiency with massive time savings while maintaining comparable relative density (94.6%) Vickers hardness 2124 HV. novelty this work relies (i) multiple steps current...
By applying the physical vapour deposition method, hollow ceramic microspheres were coated with titanium, and subsequently, they sintered using spark plasma sintering technique to create a porous material that is lightweight devoid of matrix. The process was carried out at temperatures ranging from 1050 1200 °C, holding time 2 min. samples subjected conventional thermal analyses (differential scanning calorimetry, thermogravimetry, dilatometry), oxidation resistance tests, diffusivity...
Permeation barriers represent one of the crucial fields in materials development for thermonuclear fusion. Primary objective is to suppress permeation hydrogen isotopes (mainly tritium) from future fusion facilities. Secondary reduce retention structural materials, potentially also improving their corrosion resistance. Expected reactor conditions put high demands on material, as well final barrier quality. Key properties are tritium reduction, absence defects (especially cracks),...
Abstract Tungsten and its alloys are promising candidates for protecting plasma-facing components in fusion reactors such as tokamaks. However, processing is complicated by tungsten’s brittleness, CTE mismatch with copper steel, susceptibility to grain growth oxidation above 500 °C, poor weldability. Given these factors, attention shifting from conventional methods powder additive techniques. In this work, two technologies employed consolidation of W WCr layers: cold kinetic spraying...
For future fusion reactors, materials able to withstand harsh environments are needed.In particular, this concerns the plasma-facing components which foreseen consist of tungsten-based armor and structural cooling part made steel.Currently, joining these presents a significant challenge.The stress concentration at their interface, arises due thermal exposure difference in mechanical properties, can be reduced by composite/graded interlayers.Plasma spraying is among prospective technologies...