| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7965704 | Journal of Nuclear Materials | 2015 | 4 Pages |
Abstract
Fe-W binary mixed layers were prepared as a model system for reduced-activation ferritic-martensitic (RAFM) steel for studying their dynamic erosion behavior resulting from energetic deuterium (D) irradiation. This investigation aims toward an assessment of RAFM steels as plasma-facing material. The surface composition of the model layers is modified by D irradiation. W is enriched at the surface with D irradiation fluence due to the preferential sputtering of Fe. It depends on the D impinging energy as well as the initial W fraction of the Fe-W layer. No significant development of surface topography was observed within the examined conditions. The erosion yield of a Fe-W layer is comparable to that of pure Fe in the low-fluence range and decreases with increasing D fluence. These results indicate that the dynamic change of erosion yield is significantly correlated with the surface W enrichment.
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Authors
K. Sugiyama, J. Roth, V.Kh. Alimov, K. Schmid, M. Balden, S. Elgeti, F. Koch, T. Höschen, M.J. Baldwin, R.P. Doerner, H. Maier, W. Jacob,