%0 Journal Article
%A Ueda, Y.
%A Oya, M.
%A Hamaji, Y.
%A Lee, H. T.
%A Kurishita, H.
%A Torikai, Y.
%A Yoshida, N.
%A Kreter, A.
%A Coenen, J. W.
%A Litnovsky, A.
%A Philipps, V.
%T Surface erosion and modification of toughened, fine-grained, recrystallized tungsten exposed to TEXTOR edge plasma
%J Physica scripta
%V T159
%@ 1402-4896
%C Bristol
%I IoP Publ.
%M FZJ-2015-00126
%P 014038 
%D 2014
%X 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000334847800039
%R 10.1088/0031-8949/2014/T159/014038
%U https://juser.fz-juelich.de/record/186017