TY  - JOUR
AU  - Klein, Felix
AU  - Litnovsky, Andrey
AU  - Tan, Xiaoyue
AU  - Gonzalez-Julian, Jesus
AU  - Rasinski, Marcin
AU  - Linsmeier, Christian
AU  - Bram, Martin
AU  - Coenen, Jan Willem
TI  - Smart alloys as armor material for DEMO: Overview of properties and joining to structural materials
JO  - Fusion engineering and design
VL  - 166
SN  - 0920-3796
CY  - New York, NY [u.a.]
PB  - Elsevier
M1  - FZJ-2021-00913
SP  - 112272 -
PY  - 2021
AB  - Tungsten test is currently the baseline first-wall armor material for a future DEMOnstration power plant. Smart alloys, containing tungsten (W), 11.4 weight (wt) % chromium (Cr), and 0.6 wt% yttrium (Y), aim at achieving passive safety in case of air ingress into the vacuum vessel and a loss-of-coolant accident causing a temperature rise above 1200 K for weeks. In such a case, smart alloys suppress oxidation and sublimation of radioactive W.This publication summarizes several important properties of smart alloys: the suppression of oxidation, the hardness as a function of the microstructure, and potential carbide formation in the presence of carbon (C) impurities. Further, first results on joining them to the EUROFER by field-assisted sintering technology (FAST) without interface layer are presented. In literature, FAST is also known as spark plasma sintering (SPS). A stable joint with an tungsten–iron (W–Fe) diffusion layer of 100 nm at the interface was achieved. The joint survived several heat cycles to 873 K.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000640896300002
DO  - DOI:10.1016/j.fusengdes.2021.112272
UR  - https://juser.fz-juelich.de/record/890368
ER  -