Performance of the different tungsten grades under fusion relevant power loads

被引：23
|
作者：
Makhankov, A [1 ]
Barabash, V
Mazul, I
Youchison, D
机构：
[1] Efremov Inst Electrophys Apparatus, St Petersburg 189631, Russia
[2] ITER, Joint Cent Team, D-85748 Garching, Germany
[3] Sandia Natl Labs, Albuquerque, NM 87185 USA
来源：
JOURNAL OF NUCLEAR MATERIALS | 2001年 / 290卷
关键词：
tungsten; thermal load;
D O I：
10.1016/S0022-3115(00)00668-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The test results of several W grades at conditions typical for plasma facing component operations are summarised. These include the effects of steady-state heat fluxes (up to 43 MW/m(2)), disruption simulation (up to 30 MJ/m(2) during 0.05-0.36 ms) and heat Aux tests of W after disruption simulation. Representatives of the main W grades have been investigated: pure sintered W, W-Re and W-Mo cast alloys, W-1% La2O3, W-2% CeO2, single crystal W: etc. The resistance to high heat fluxes strongly depends on the orientation of the W grains to incident heat flux and with proper orientation W can withstand heat fluxes up to 27 MW/m(2). After disruption simulation, intensive surface crack formation has been observed for all studied W grades except single crystal W. Severe damage after disruption and thermal fatigue loading have been observed for almost all W grades except the W-5Re-0.1ZrC alloy and W-Re single crystal. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：1117 / 1122
页数：6
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