Journal Article

FZJ-2017-06555

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Plasma Facing Materials Performance under ITER-Relevant Mitigated Disruption Photonic Heat Loads

Klimov, N. S. (Corresponding author) ; Putrik, A. B. ; Linke, J.FZJ* ; Pitts, R. A. ; Zhitlukhin, A. M. ; Kuprianov, I. B. ; Spitsyn, A. V. ; Ogorodnikova, O. V. ; Podkovyrov, V. L. ; Muzichenko, A. D. ; Ivanov, B. V. ; Sergeecheva, Y. V. ; Lesina, I. G. ; Kovalenko, D. V. ; Barsuk, V. A. ; Danilina, N. A. ; Bazylev, B. N. ; Giniyatulin, R. N.

2015
Elsevier Science Amsterdam [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.jnucmat.2014.11.098

Abstract: PFMs (Plasma-facing materials: ITER grade stainless steel, beryllium, and ferritic–martensitic steels) as well as deposited erosion products of PFCs (Be-like, tungsten, and carbon based) were tested in QSPA under photonic heat loads relevant to those expected from photon radiation during disruptions mitigated by massive gas injection in ITER. Repeated pulses slightly above the melting threshold on the bulk materials eventually lead to a regular, “corrugated” surface, with hills and valleys spaced by 0.2–2 mm. The results indicate that hill growth (growth rate of ∼1 μm per pulse) and sample thinning in the valleys is a result of melt-layer redistribution. The measurements on the 316L(N)-IG indicate that the amount of tritium absorbed by the sample from the gas phase significantly increases with pulse number as well as the modified layer thickness. Repeated pulses significantly below the melting threshold on the deposited erosion products lead to a decrease of hydrogen isotopes trapped during the deposition of the eroded material.

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Contributing Institute(s):

1. Werkstoffstruktur und -eigenschaften (IEK-2)

Research Program(s):

1. 174 - Plasma-Wall-Interaction (POF3-174) (POF3-174)

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Database coverage:
Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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