A5023749892- Advanced materials and composites
- Fusion materials and technologies
- Nuclear Materials and Properties
- Advanced ceramic materials synthesis
- Metal and Thin Film Mechanics
- Intermetallics and Advanced Alloy Properties
- Ion-surface interactions and analysis
- Magnetic confinement fusion research
- Titanium Alloys Microstructure and Properties
- Catalytic Processes in Materials Science
- Metal Alloys Wear and Properties
- Advancements in Solid Oxide Fuel Cells
- Particle accelerators and beam dynamics
- Advanced Materials Characterization Techniques
- Plasma Diagnostics and Applications
- Metallurgical and Alloy Processes
- Microstructure and mechanical properties
- Superconducting Materials and Applications
- Semiconductor materials and devices
- Laser-Plasma Interactions and Diagnostics
- Ionosphere and magnetosphere dynamics
- Laser-induced spectroscopy and plasma
- Electronic and Structural Properties of Oxides
- Diamond and Carbon-based Materials Research
- Electronic Packaging and Soldering Technologies
Max Planck Institute for Plasma Physics
2016-2025
Max Planck Society
2012-2021
Forschungszentrum Jülich
2016
Technical University of Munich
2016
Erich Schmid Institute of Materials Science
2016
Austrian Academy of Sciences
2016
Montanuniversität Leoben
2016
Max Planck Innovation
2012-2013
For the next step fusion reactor use of tungsten is inevitable to suppress erosion and allow operation at elevated temperature high heat loads.Tungsten fibre-reinforced composites overcome intrinsic brittleness its susceptibility embrittlement thus as a structural well an armour material.That this concept works in principle has been shown recent years.In contribution we present development approach towards their future reactor.A multilayer needed addressing all composite constituents...
The provision of a particle and power exhaust solution which is compatible with first-wall components edge-plasma conditions key area present-day fusion research mandatory for successful operation ITER DEMO. work package plasma-facing (WP PFC) within the European programme complements laboratory experiments, i.e. in linear plasma devices, electron ion beam loading facilities, studies performed toroidally confined magnetic such as JET, ASDEX Upgrade, WEST etc. connection both groups done via...
Tungsten is a promising candidate for the plasma-facing components of future fusion reactor, but its use strongly restricted by inherent brittleness.An innovative concept to overcome this problem tungsten fibre-reinforced composite.In article we present first mechanical test such composite material using sample containing multiple fibres.The in-situ fracture experiment was performed in scanning electron microscope close observation propagating crack.Stable crack propagation accompanied with...
The development of advanced materials is essential for sophisticated energy systems like a future fusion reactor. Tungsten fibre-reinforced tungsten composites (Wf/W) utilize extrinsic toughening mechanisms and therefore overcome the intrinsic brittleness at low temperature its sensitivity to operational embrittlement. This material has been successfully produced tested during last years focus now put on technological realisation use in plasma facing components devices. In this contribution,...
To overcome the inherent brittleness of tungsten, which is a promising candidate for plasma-facing material in future fusion device, tungsten fibre-reinforced composites (Wf/W) have been developed. As part materials characterisation program on Wf/W, we present results first tensile tests as-fabricated Wf/W this contribution. The give insight ultimate strength properties and reveal active toughening mechanisms under tension load within composite. Fibre bridging, fibre necking as well pull out...
Currently, tungsten fibre-reinforced (Wf) composites are regarded as promising materials for plasma-facing components of future magnetic confinement fusion devices. In this context, (Wf/W) is being investigated a pseudo-ductile composite material overcoming the intrinsic brittleness bulk while copper (Wf/Cu) developed high-strength heat sink material. contribution, we discuss current development status and progress that has been achieved recently with respect to characterization upscaling...
Abstract The occurrence of high stress concentrations in reactor components is a still intractable phenomenon encountered fusion design. Here, we observe and quantitatively model non-linear high-dose radiation mediated microstructure evolution effect that facilitates fast relaxation the most challenging low-temperature limit. In situ observations tensioned tungsten wire exposed to high-energy ion beam show internal up 2 GPa relaxes within minutes, with extent time-scale accurately predicted...
Nitrogen puffing is routinely applied in nuclear fusion plasma experiments with tungsten walls to control the amount of power emitted from by radiation. However, as nitrogen retained significant amounts it adds some complexity plasma-wall interaction. Basic questions concerning interaction tungsten, namely energy and temperature dependent retention implanted into erosion formed nitride deuterium, are still open. To address these questions, laboratory a mass-filtered ion source sample...
High strength and creep resistance also at high temperature, combined with a thermal conductivity melting point make tungsten (W) an ideal material for highly loaded areas in future fusion reactors. However, as typical bcc metal features intrinsic brittleness up to very temperature is prone operational embrittlement. Tungsten fibre-reinforced composite (Wf/W) utilizes extrinsic toughening mechanisms similar ceramic ceramics therefore overcomes the problem. The properties of are large extend...
Understanding the influence of microstructure tungsten on hydrogen transport is crucial for use as first-wall material in fusion reactors. Here, we report results molecular dynamics and transition state studies grain boundaries hydrogen. An exhaustive mapping possible minimum activation energy migration trajectories trace impurity reveals a strongly modified distribution neighborhood together with an altered connectivity matrix. The indicate that polycrystalline may provide important...
The European Fusion Roadmap foresees water cooled plasma facing components in a first DEMO design order to provide enough margin for the cooling capacity and only moderately extrapolate technology which was developed tested ITER. In make best use of concept copper (Cu) copper-chromium-zirconium alloy (CuCrZr) are envisaged as heat sink whereas armour tungsten (W) based materials will be used. Combining both high flux component asks an increase their operational range towards higher...
Demanding high heat flux applications, as for example plasma-facing components of future nuclear fusion devices, ask the development advanced materials. For such components, copper alloys are currently regarded sink materials while monolithic tungsten is foreseen directly material. However, combination these in one component problematic since they exhibit different thermomechanical characteristics and their optimum operating temperatures do not overlap. In this context, an improvement can be...