TY  - JOUR
AU  - Ueda, Y.
AU  - Oya, M.
AU  - Hamaji, Y.
AU  - Lee, H. T.
AU  - Kurishita, H.
AU  - Torikai, Y.
AU  - Yoshida, N.
AU  - Kreter, A.
AU  - Coenen, J. W.
AU  - Litnovsky, A.
AU  - Philipps, V.
TI  - Surface erosion and modification of toughened, fine-grained, recrystallized tungsten exposed to TEXTOR edge plasma
JO  - Physica scripta
VL  - T159
SN  - 1402-4896
CY  - Bristol
PB  - IoP Publ.
M1  - FZJ-2015-00126
SP  - 014038 
PY  - 2014
AB  - In order to evaluate the applicability of toughened, fine-grained, recrystallized (TFGR)-W to tokamak edge plasma environment, two TFGR-W specimens (TFGR-W 1.1wt%TiC and TFGR-W 3.3wt%TaC) were exposed to 31 identical ohmic discharges in the TEXTOR tokamak by means of a limiter lock system. The highest surface temperature reached was about 1300 °C. Under these temperature conditions, the bulk microstructure and dispersoids distribution of both TFGR-W remained intact, suggesting that these TFGR-W tungsten materials have sufficient stability under these plasma loading conditions. The erosion of TiC dispersoids on the surface was enhanced by plasma exposure above 1150 °C, while such enhanced erosion was not observed for TaC dispersoids probably due to the higher melting temperature of Ta than Ti.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000334847800039
DO  - DOI:10.1088/0031-8949/2014/T159/014038
UR  - https://juser.fz-juelich.de/record/186017
ER  -