Inscrição na biblioteca: Guest
Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa
High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
SJR: 0.137 SNIP: 0.341 CiteScore™: 0.43

ISSN Imprimir: 1093-3611
ISSN On-line: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.v9.i1.110
pages 127-140

CHARACTERISATION OF PLASMA-SPRAYED BORON CARBIDE AND TUNGSTEN LAYERS FOR FUSION APPLICATIONS

S. Lindig
Max-Planck-Institut fur Plasmaphysik, Euratom Association, Boltzmannstr. 2, D-85748 Garching, Germany
V. Alimov
Max-Planck-Institut fur Plasmaphysik, Euratom Association, Boltzmannstr. 2, D-85748 Garching, Germany
H. Bolt
Max-Planck-Institut fur Plasmaphysik, Euratom Association, Boltzmannstr. 2, D-85748 Garching, Germany
B. Boswirth
Max-Planck-Institut fur Plasmaphysik, Euratom Association, Boltzmannstr. 2, D-85748 Garching, Germany
H. Greuner
Max-Planck-Institut fur Plasmaphysik, Euratom Association, Boltzmannstr. 2, D-85748 Garching, Germany
T. Huber
PLANSEE AG, A-6600 Reutte / Tirol, Austria
G. Matern
Max-Planck-Institut fur Plasmaphysik, Euratom Association, Boltzmannstr. 2, D-85748 Garching, Germany

RESUMO

In nuclear fusion devices plasma-facing materials (PFM) have to sustain extreme environments. The first wall of fusion experiments or future power plants is loaded with thermal radiation and high-energy particles, eroding the wall material. In current experiments low-Z-materials such as graphite and carbon composites are preferred PFM, but basic disadvantages are the high erosion rate and accumulation of hydrogen. For the new WENDELSTEIN 7-X fusion experiment (W7-X), now under construction at Greifswald (Germany), 70 m2 of water-cooled wall protection will be coated with B4C layers by vacuum plasma spraying (VPS). VPS provides the required high purity of coating materials and is an effective industrial method. The thermal expansion mismatch of the ceramic B4C coating and stainless-steel (SS) substrate and, the high processing temperature require an interlayer to reduce residual stress. An interlayer made of SS mixed with B4C has been successfully developed. An alternative high-Z PFM with very low erosion is tungsten, which shows good plasma-physical and thermo-mechanical behaviour in fusion experiments. The VPS-B4C technology developed is transferable to coatings of W on SS. Tungsten will possibly be employed as a protective material for the first wall in the next fusion experiment, ITER.


Articles with similar content:

Plasma sprayed ceramics for low macroscopic field emitters
High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes, Vol.9, 2005, issue 1
L. Pawlowski, W. Czarczynski, J. Grimblot, Z. Znamirowski, J. Zdanowski, R. Tomaszek
The Steam Explosion Induced by the Molten Reactor Material-Water Interaction
International Heat Transfer Conference 12, Vol.56, 2002, issue
J. H. Song, S.W. Hong, H. D. Kim, B. T. Min, Y. J. Chang, J. H. Kim, Yongseung Shin, I. K. Park
PURIFICATION AND HYDROGENATION OF METALLURGICAL SILICON POWDER BY RF THERMAL PLASMA. CHARACTERIZATION OF THE DEPOSIT
High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes, Vol.7, 2003, issue 3
D. Ballutaud, Jacques Amouroux, M. Nickravech, Daniel Morvan, E. Francke, M. Benmansour
Transient Heat Transfer to a Forced Flow of Supercritical Helium at Very Low Temperatures
ICHMT DIGITAL LIBRARY ONLINE, Vol.0, 1986, issue
W. B. Bloem
Optimization of Short-Pulsed Dielectric Barrier Discharge for In-Package Disinfection
Plasma Medicine, Vol.8, 2018, issue 2
Gregory Fridman, Alyssa Suarez, Anita Mannsberger, Chong Liu, Alexander A. Fridman, Ngoc Anh Huynh, Vandana Miller, Pietro Ranieri