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000891407 1001_ $$0P:(DE-HGF)0$$aSchmitz, J.$$b0
000891407 245__ $$aPreferential sputtering induced Cr-Diffusion during plasma exposure of WCrY smart alloys
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000891407 520__ $$aWCrY Smart Alloys are developed as first wall material of future fusion devices such as DEMO. They aim at behaving like pure W during plasma operation due to depletion of the alloying elements Cr and Y. The Cr concentration gradients induced by preferential plasma sputtering cause Cr-diffusion. The exposure of WCrY and W samples to pure D plasma, with a plasma ion energy of , is simulated using the dynamic version of SDTrimSP. Cr-diffusion is included into the model. Simulation results are compared with experimental results. At sample temperatures of more than 600∘C and sputtering by D plus residual oxygen in the plasma ion flux, the Cr-transport to the surface leads to enhanced erosion for WCrY samples. A diffusion coefficient for Cr in WCrY of the order of is determined. The suitability of WCrY as first wall armour and the influence of further effects, considering especially Cr-diffusion, is discussed.
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000891407 7001_ $$0P:(DE-HGF)0$$aMutzke, A.$$b1
000891407 7001_ $$0P:(DE-Juel1)130090$$aLitnovsky, A.$$b2$$eCorresponding author
000891407 7001_ $$0P:(DE-HGF)0$$aKlein, F.$$b3
000891407 7001_ $$0P:(DE-Juel1)180592$$aTan, Xiaoyue$$b4$$ufzj
000891407 7001_ $$0P:(DE-Juel1)161367$$aWegener, T.$$b5
000891407 7001_ $$aHansen, P.$$b6
000891407 7001_ $$0P:(DE-Juel1)178718$$aAghdassi, N.$$b7
000891407 7001_ $$0P:(DE-Juel1)171509$$aEksaeva, Alina$$b8$$ufzj
000891407 7001_ $$0P:(DE-Juel1)162160$$aRasinski, M.$$b9
000891407 7001_ $$0P:(DE-Juel1)130070$$aKreter, A.$$b10
000891407 7001_ $$0P:(DE-Juel1)162271$$aGonzalez-Julian, J.$$b11
000891407 7001_ $$0P:(DE-Juel1)2594$$aCoenen, J. W.$$b12
000891407 7001_ $$0P:(DE-Juel1)157640$$aLinsmeier, Ch.$$b13
000891407 7001_ $$0P:(DE-Juel1)129591$$aBram, M.$$b14
000891407 773__ $$0PERI:(DE-600)2001279-2$$a10.1016/j.jnucmat.2019.151767$$gVol. 526, p. 151767 -$$p151767 -$$tJournal of nuclear materials$$v526$$x0022-3115$$y2019
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