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Energy threshold of brittle destruction for carbon based materials

Bazylev, B. N. 1; Koza, Y.; Landman, I. S. 1; Linke, J.; Pestchanyi, S. E. 1; Würz, H. 1
1 Forschungszentrum Karlsruhe (FZKA)


In the future tokamak ITER the carbon fiber composites (CFC) are foreseen as one of divertor armour materials.
The main deficiency of CFC is that their brittle destruction (BD) can occur at the heat fluxes of impacting SOL plasma above 0.5 GW/m2, which are typical of the tokamak operation in the ELMy H-mode. These rather large heat loads applied to the NS31 and NB31 CFC targets are successfully simulated at the electron beam facility JUDITH for pulse- and quasi-stationary regimes on the spatial scale of 2 cm by means of scanning the e-beam.
To support these experimental investigations of BD, in this work a semi-empirical three-dimensional (3D) model based on the energy threshold of BD is developed and applied for analysis of the graphite erosion obtained at JUDITH in wide ranges of heat flux and pulse duration. ... mehr

Abstract (englisch):


DOI: 10.1238/Physica.Topical.111a00213
Zitationen: 22
Zitationen: 16
Zugehörige Institution(en) am KIT Institut für Hochleistungsimpuls- und Mikrowellentechnik (IHM)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2004
Sprache Englisch
Identifikator ISSN: 0031-8949, 1402-4896
KITopen-ID: 110054909
HGF-Programm 31.02.03 (POF I, LK 01)
Erschienen in Physica scripta
Verlag Royal Swedish Academy of Sciences
Band T111
Seiten 213-17
Bemerkung zur Veröffentlichung 10th Carbon Workshop, Jülich, September 17-19, 2003
Nachgewiesen in Dimensions
Web of Science
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