Please note: unless otherwise specified, the internships are only available for students with a nationality of an EU-member state and/or students from a Dutch university.
DIFFER (Dutch Institute for Fundamental Energy Research) is one of the Netherlands Organisation for Scientific Research (NWO) institutes and focuses on a multidisciplinary approach to energy research, combining physics, chemistry, engineering and materials science. The institute is based on two main strands, solar fuels for the conversion and storage of renewable energy and fusion-energy as clean and unlimited source of energy. DIFFER is developing and supporting a national network on fundamental energy research and is closely collaborating with academic institutions, research institutes and industry. As of 2015 the institute is located in a new building at the campus of Eindhoven University of Technology (TU/e).
Tungsten is the leading candidate for the plasma-facing wall material of fusion reactors due to its high melting point, high conductivity and low sputtering yield. The tungsten plasma facing components will be subject to extremely high heat and particle loads from the plasma which means that maximum operational temperature will approach the literature recrystallization threshold (t1/2 ~1400 °C), which is based on furnace annealing . However, recent results indicate that hydrogen plasma loading can significantly decrease the temperature threshold for tungsten recrystallization (t1/2 ~ 970 °C) . This would have a significant impact on the prospects for using tungsten in fusion reactors as significant recrystallization can lead to macroscopic cracking and potentially component failure due to the strongly reduced yield strength of recrystallized tungsten compared to the prepared cold-worked tungsten. This project will focus on exploring and characterizing this phenomenon using DIFFER’s unique linear plasma device Magnum-PSI [3,4], which can recreate the plasma heat and particle loads at the fusion reactor wall. The project will involve plasma loading experiments, microstructural characterization (e.g. SEM, EBSD, Vickers Hardness measurements) and model development and application to generate an understanding of the expected tungsten performance and the driving mechanisms behind the plasma loading modifications of the tungsten behaviour.
Intended level: MSC, ideally a 9-12 months project
Expertise needed: materials science, mechanical engineering
Contact for further information: Tom Morgan, email@example.com
Write an email with CV included and we can discuss if it is a good fit (firstname.lastname@example.org).Apprenez-en davantage
|Title||MsC Project: Plasma Ion Influence on the Recrystallization Kinetics of Tungsten|
|Employer||Dutch Institute for Fundamental Energy Research (DIFFER)|
|Job location||De Zaale 20, 5612 AJ Eindhoven|
|Published||mars 21, 2019|
|Application deadline||Unspecified deadline|
|Job type||Assistant de recherche,   Autre  |
|Fields||Génie des matériaux,   Chimie des matériaux,   Physique des matériaux,   Physique des plasmas,   Génie mécanique  |