Journal ArticleDOI
Plasma-Sprayed Beryllium on Macro-Roughened Substrates for Fusion Reactor High Heat Flux Applications
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TLDR
In this paper, the authors describe experiments to produce beryllium mock-up first wall (FW) components by plasma spray deposition on macro-roughened substrates.Abstract:
The development of beryllium first wall (FW) plasma facing components for future magnetic confinement fusion experiments, such as the International Thermonuclear Experimental Reactor (ITER), is a topic of great importance as research into long-term energy sources increases in urgency. The FW components must be able to survive the harsh plasma environment for extended periods of time. One proposed method for initial fabrication and repair of FW components is plasma spraying. Previous plasma-sprayed beryllium mock-up FW components had coating separation from the substrate at the edges. The present work describes experiments to produce beryllium mock-up FW components by plasma spray deposition on macro-roughened substrates. Experimental parameters, high heat flux testing and characterization results from the components are presented. No separation of the coating from the substrate was observed. Results of high heat flux testing under electron beam irradiation show performance exceeding that required for ITER FW components. Differences in macro-roughening features result in changes in the threshold absorbed heat flux before damage to the coatings occurs.read more
Citations
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Journal ArticleDOI
The 2016 Thermal Spray Roadmap
Armelle Vardelle,Christian Moreau,Jun Akedo,Hossein Ashrafizadeh,Christopher C. Berndt,Jörg Oberste Berghaus,Maher I. Boulos,Jeffrey A. Brogan,A.C. (Thanos) Bourtsalas,Ali Dolatabadi,Mitchell R. Dorfman,Timothy J. Eden,Pierre Fauchais,Gary Fisher,Frank Gaertner,Malko Gindrat,R. Henne,Margaret Hyland,Eric Irissou,Eric H. Jordan,Khiam Aik Khor,Andreas Killinger,Yuk Chiu Lau,Chang-Jiu Li,Li Li,Jon P. Longtin,Nicolaie Markocsan,Patrick J. Masset,Jiri Matejicek,Georg Mauer,André McDonald,Javad Mostaghimi,Sanjay Sampath,Günter Schiller,Kentaro Shinoda,M. F. Smith,Asif Ansar Syed,Nickolas J. Themelis,Filofteia-Laura Toma,Juan Pablo Trelles,Robert Vassen,Petri Vuoristo +41 more
TL;DR: In this article, a collection of short articles written by experts in thermal spray who were asked to present a snapshot of the current state of their specific field, give their views on current challenges faced by the field and provide some guidance as to the R&D required to meet these challenges.
Journal ArticleDOI
Development of Advanced Coatings for ITER and Future Fusion Devices
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Contra-rotating propeller aerodynamics solved by a 3d panel method with coupled boundary layer
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Thermal fatigue cycling of Be/Cu joining mock-ups
Dennis L. Youchison,S.H. Goods,J.D. Puskar,W.A. DeLong,Tina T. Martin,M. Narula,Alice Ying,M.A. Ulrickson,T.J. Lutz,J.M. McDonald +9 more
TL;DR: In this article, the authors evaluated beryllium-to-copper joining techniques for potential use by US manufacturers in making first wall components for International Thermonuclear Experimental Reactor (ITER).
Journal ArticleDOI
Effect of surface macroroughness on the microstructure and sliding wear properties of Al2O3 + 13 wt.% TiO2 thick coatings
Sara I. Zesati-Belmontes,Enrique A. López-Baltazar,José Jorge Ruiz-Mondragón,H. Ruiz-Luna,F. Alvarado-Hernández,V.H. Baltazar-Hernandez +5 more
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References
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Journal ArticleDOI
The quenching stress in thermally sprayed coatings
S. Kuroda,T.W. Clyne +1 more
TL;DR: In this article, a simple expression to evaluate the residual stress in a plasma-sprayed coating is given for the case where the coating thickness is much smaller than the substrate thickness.
Journal ArticleDOI
The structure, properties and performance of plasma-sprayed beryllium for fusion applications
Richard G. Castro,P.W. Stanek,Keith E Elliott,Dennis L. Youchison,Robert D. Watson,David S. Walsh +5 more
TL;DR: In this article, the authors investigated the use of secondary H2 gas additions to improve the melting point of the beryllium powder and negative transferred-arc cleaning to improve bonding between the powder and the underlying surface.
Journal ArticleDOI
Improved Oxidation Life of Segmented Plasma Sprayed 8YSZ Thermal Barrier Coatings
TL;DR: In this paper, an 8YSZ thermal barrier coating (TBC) was applied to grit blasted surfaces of PWA 1484 to take advantage of the excellent oxidation resistance of this superalloy.
Book ChapterDOI
The new electron beam facility for materials testing in hot cells - design and preliminary experience
TL;DR: In this paper, an electron beam test apparatus for the fusion reactor research program at the KFA has been installed in the Hot Cells of the Institute for Materials in Energy Systems, complementing the test equipment available in Japan, USA, France and RF.
Journal ArticleDOI
The effect of substrate temperature on the thermal diffusivity and bonding characteristics of plasma sprayed beryllium
TL;DR: In this article, the effect of substrate temperature on the resulting thermal diffusivity of the beryllium coatings and the thermal diffusion at the coating/beryllium substrate interface was investigated.