TY - JOUR
T1 - Evaluation of vacuum plasma-sprayed boron carbide protection for the stainless steel first wall of WENDELSTEIN 7-X
AU - Greuner, H.
AU - Balden, M.
AU - Boeswirth, B.
AU - Bolt, H.
AU - Gadow, R.
AU - Grigull, P.
AU - Hofmann, G.
AU - Huber, T.
AU - Kasparek, W.
AU - Kumric, H.
AU - Lindig, S.
AU - Matern, G.
AU - Mayer, M.
AU - Neu, R.
AU - Renner, H.
AU - Roth, J.
AU - Riegert-Escribano, M.
AU - Simon-Weidner, J.
AU - Wacker, R.
PY - 2004/8/1
Y1 - 2004/8/1
N2 - To minimize radiation losses of the plasma during long pulse operation, the first wall protection of WENDELSTEIN 7-X demands low-Z plasma facing materials. In addition to carbon materials on high heat flux loaded components, 300-500 μm thick vacuum plasma-sprayed (VPS) layers of boron carbide (B4C) are considered as coatings on large actively cooled stainless steel panels. In order to evaluate the behaviour relevant to the expected plasma wall interactions, an extensive material characterization and test programme was executed. Also included is the examination of the industrial manufacturing and the suitability of these coatings as 70 m2 first wall plasma facing material for W7-X. To improve the adhesion of thick B4C layers on stainless steel, different interlayers have been investigated. Based on the results, a VPS-based coating technique was identified which is suitable to manufacture the B4C protection layers on stainless steel wall panels of W7-X.
AB - To minimize radiation losses of the plasma during long pulse operation, the first wall protection of WENDELSTEIN 7-X demands low-Z plasma facing materials. In addition to carbon materials on high heat flux loaded components, 300-500 μm thick vacuum plasma-sprayed (VPS) layers of boron carbide (B4C) are considered as coatings on large actively cooled stainless steel panels. In order to evaluate the behaviour relevant to the expected plasma wall interactions, an extensive material characterization and test programme was executed. Also included is the examination of the industrial manufacturing and the suitability of these coatings as 70 m2 first wall plasma facing material for W7-X. To improve the adhesion of thick B4C layers on stainless steel, different interlayers have been investigated. Based on the results, a VPS-based coating technique was identified which is suitable to manufacture the B4C protection layers on stainless steel wall panels of W7-X.
UR - http://www.scopus.com/inward/record.url?scp=3342922679&partnerID=8YFLogxK
U2 - 10.1016/j.jnucmat.2004.04.214
DO - 10.1016/j.jnucmat.2004.04.214
M3 - Conference article
AN - SCOPUS:3342922679
SN - 0022-3115
VL - 329-333
SP - 849
EP - 854
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - 1-3 PART A
T2 - Proceedings of the 11th Conference on Fusion Research
Y2 - 7 December 2003 through 12 December 2003
ER -