Tech Briefs Magazine - October 2021 - 41a

RESEARCH SPOTLIGHT
Forschungszentrum Jülich GmbH, Germany
OPTIMIZINGOPTIMIZING A
CVD CVD PROCESS PROCESS
FOR FOR A HIGH HIGH
PERFORMANCEPERFORMANCE
TUNGSTEN TUNGSTEN
MA MATERIALTERIAL
by BRIANNE CHRISTOPHER
High-performance
fusion reactors call
for high-performance
materials. To optimize
a production process
for a tungsten material
used in a fusion reactor
divertor, researchers
at Forschungszentrum
Jülich GmbH (FZJ),
Institute for Energy and
Climate Research, and
Max Planck Institute
for Plasma Physics in
Germany turned to
multiphysics modeling.
FIGURE 1      
In order to make fusion power not only
physically possible but economically possible,
we need to develop high-performance fusion
reactors. However, these reactors call for
high-performance materials in their own right.
Consider one of the many parts of a reactor, the
divertor, as an example.
Divertors (Figure 1) divert ash and other
plasma contaminants out of the fusion vessel.
These components must be able to withstand
the harshest environment in the entire reactor
setup. What material, then, is a good option
for these parts? Tungsten offers divertors
a reasonable operational lifetime and can
withstand huge particle and heat fluxes, being
heavily bombarded by neutrons, and undergoing
plasma erosion and thermal cycling. Tungsten
has a high thermal conductivity, and it does not
produce radioisotopes with a long half-life from
transmutation or trap too much hydrogen, unlike
some other material choices for the divertors.
COMSOL NEWS 41a
Intro
Cov
ToCToC
+
-
A
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Tech Briefs Magazine - October 2021

Table of Contents for the Digital Edition of Tech Briefs Magazine - October 2021

Tech Briefs Magazine - October 2021 - Intro
Tech Briefs Magazine - October 2021 - Sponsor
Tech Briefs Magazine - October 2021 - Cov1
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Tech Briefs Magazine - October 2021 - Cov3
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