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000865898 1001_ $$0P:(DE-Juel1)130166$$aTerra, A.$$b0$$eCorresponding author
000865898 245__ $$aΜicro-Structured Tungsten: an AdvancedPplasma-Facing Material
000865898 260__ $$aAmsterdam [u.a.]$$bElsevier$$c2019
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000865898 520__ $$aA micro-structuring of the tungsten plasma-facing surface can strongly reduce near surface thermal stresses induced by ELM heat fluxes. This approach has been confirmed by numerical simulations with the help of ANSYS software. For experimental tests, two 10 × 10 mm2 samples of micro-structured tungsten were manufactured. These consisted of 2000 and 5000 vertically packed tungsten fibres with dimensions of Ø240 µm × 2.4 mm and Ø150 µm × 2.4 mm, respectively. The 1.2 mm bottom parts of the fibres are embedded in a copper matrix. The top parts of the fibres have gaps about of 10 µm so they are not touching each others. The top of all tungsten fibres was electro-polished. A Nd:YAG laser with a pulse duration 1 ms and a pulse repetition frequency of 25 Hz was used to simulate up to 105 ELM-like heat pulses. No damage on either of the micro-structured tungsten samples were observed. Neon plasma erosion rate and fuel retention of the micro-structured tungsten samples were almost identical to bulk tungsten samples.
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000865898 7001_ $$0P:(DE-Juel1)130158$$aSergienko, G.$$b1
000865898 7001_ $$0P:(DE-Juel1)5089$$aTokar, M.$$b2
000865898 7001_ $$0P:(DE-Juel1)7884$$aBorodin, D.$$b3
000865898 7001_ $$0P:(DE-Juel1)158050$$aDittmar, T.$$b4
000865898 7001_ $$0P:(DE-Juel1)130070$$aKreter, A.$$b5
000865898 7001_ $$0P:(DE-Juel1)167463$$aMartynova, Y.$$b6
000865898 7001_ $$0P:(DE-Juel1)139534$$aMöller, S.$$b7
000865898 7001_ $$0P:(DE-Juel1)162160$$aRasiński, M.$$b8
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000865898 7001_ $$0P:(DE-Juel1)129751$$aLoewenhoff, Th.$$b10
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000865898 7001_ $$0P:(DE-Juel1)166383$$aYuan, Y.$$b12
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000865898 7001_ $$0P:(DE-Juel1)6784$$aUnterberg, B.$$b14
000865898 7001_ $$0P:(DE-Juel1)157640$$aLinsmeier, Ch.$$b15
000865898 773__ $$0PERI:(DE-600)2808888-8$$a10.1016/j.nme.2019.02.007$$gVol. 19, p. 7 - 12$$p7 - 12$$tNuclear materials and energy$$v19$$x2352-1791$$y2019
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