Thermal cycling tests of [formula omitted] monoblock divertor modules

Test results for actively cooled, graphite RGTi type brazed to molybdenum tube divertor mock-ups are presented. Particular attention was paid to finding a reliable, non-destructive method of investigating brazed joints. The mock-ups were ultrasonically tested and the results correlated with the mic...

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Bibliographic Details
Published in:Journal of nuclear materials 1994-09, Vol.212, p.1360-1364
Main Authors: Barabash, V.R., Burtseva, T.A., Gervash, A.A., Giniyatulin, R.N., Gur'eva, T.M., Duwe, R., Linke, J.
Format: Article
Language:English
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Summary:Test results for actively cooled, graphite RGTi type brazed to molybdenum tube divertor mock-ups are presented. Particular attention was paid to finding a reliable, non-destructive method of investigating brazed joints. The mock-ups were ultrasonically tested and the results correlated with the microstructure of the joints. Two types of tests were carried out: screening tests with a stepped increase of the surface heat flux from shot to shot and thermal cycling tests at a fixed power density level. The heat loads were varied in the range from 6 MW/m 2 to 12 MW/m 2. About 150 cycles of heat loads with a power density of 10 MW/m 2 were realized and no macrodamage was found. The heat flux experiments were accompanied by detailed metallographic investigations.
ISSN:0022-3115
1873-4820
DOI:10.1016/0022-3115(94)91051-0