J
J. W. Coenen
Researcher at Forschungszentrum Jülich
Publications - 173
Citations - 5719
J. W. Coenen is an academic researcher from Forschungszentrum Jülich. The author has contributed to research in topics: Tungsten & Divertor. The author has an hindex of 38, co-authored 165 publications receiving 4651 citations. Previous affiliations of J. W. Coenen include Culham Centre for Fusion Energy & Oak Ridge National Laboratory.
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Journal ArticleDOI
Atmospheric plasma spraying of functionally graded steel/tungsten layers for the first wall of future fusion reactors
S. Heuer,Jiří Matějíček,Monika Vilémová,Martin Koller,Ksenia Illková,Jakub Veverka,Th. Weber,Gerald Pintsuk,J. W. Coenen,Ch. Linsmeier +9 more
TL;DR: In this paper, a modified water-stabilized atmospheric plasma spraying set-up is used to deposit uniform and functionally graded steel/tungsten coatings at elevated substrate temperatures.
Journal ArticleDOI
Smart tungsten alloys as a material for the first wall of a future fusion power plant
Andrey Litnovsky,T. Wegener,F. Klein,Ch. Linsmeier,Marcin Rasinski,Arkadi Kreter,B. Unterberg,J. W. Coenen,Hongchu Du,Hongchu Du,Joachim Mayer,Joachim Mayer,Carmen García-Rosales,A. Calvo,N. Ordás +14 more
TL;DR: In this article, the authors showed that the oxidation rate constant of the yttrium-containing thin film is 105 times less than that of pure tungsten, while the oxidation of exposed samples has proven no effect of plasma exposure on the oxidation resistance.
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New oxidation-resistant tungsten alloys for use in the nuclear fusion reactors
Andrey Litnovsky,T. Wegener,F. Klein,Ch. Linsmeier,Marcin Rasinski,Arkadi Kreter,Xiaoyue Tan,Xiaoyue Tan,J. Schmitz,J. W. Coenen,Yiran Mao,Jesus Gonzalez-Julian,Martin Bram +12 more
TL;DR: Smart tungsten-based alloys are under development as plasma-facing components for a future fusion power plant as mentioned in this paper, which are planned to adjust their properties depending on environmental conditions: acting as a sputter-resistant plasmafacing material during plasma operation and suppressing the sublimation of radioactive Tungsten oxide in case of an accident on the power plant.
Journal ArticleDOI
Rotation and radial electric field in the plasma edge with resonant magnetic perturbation at TEXTOR
J. W. Coenen,Oliver Schmitz,B. Unterberg,M. Clever,M. W. Jakubowski,U. Samm,B. Schweer,H. Stoschus,M. Z. Tokar,Textor Team +9 more
TL;DR: In this paper, the radial electric field Er can be deduced from the radial force balance when small amplitude resonant magnetic perturbations are applied to the plasma boundary (Br/Btor ~ 10?4).
Journal ArticleDOI
Advanced materials for a damage resilient divertor concept for DEMO: Powder-metallurgical tungsten-fibre reinforced tungsten
J. W. Coenen,Yiran Mao,J. Almanstötter,A. Calvo,S. Sistla,H. Gietl,H. Gietl,B. Jasper,Johann Riesch,Michael Rieth,Gerald Pintsuk,F. Klein,Andrey Litnovsky,A.V. Mueller,A.V. Mueller,T. Wegener,J.-H. You,Ch. Broeckmann,Carmen García-Rosales,R. Neu,R. Neu,Ch. Linsmeier +21 more
TL;DR: In this paper, the authors used field assisted sintering technology to achieve 94% dense materials with a reasonable (30%) fiber fraction and showed step-wise cracking while the material is still able to bear rising load, the typical pseudo-ductile behavior of a composite.