Title :
ITER dome fabrication processes
Author :
Wille, G.W. ; Driemeyer, D.E. ; Chatterton, W.J. ; Foreman, K.D.
Author_Institution :
Boeing Co., St. Louis, MO, USA
Abstract :
The 3/4-ton International Thermonuclear Experimental Reactor (ITER) divertor dome component is fabricated from three dissimilar metals-stainless steel, copper, and tungsten. It is actively cooled to withstand heat loads of 5 MW/m2 during nominal operation, transient beat loads of 15 MW/m2, for 1-2 seconds, and volumetric heating of 0.5-5 MW/m3. The divertor dome is comprised of two subcomponents: a 316L cast stainless steel dome shield block with internal coolant passages and a CuCrZr plasma-facing component (PFC) with internal coolant passages and a 15-mm-thick layer of diffusion bonded W-brush armor. This paper describes the processes developed for fabricating the stainless steel dome shield block and CuCrZr plasma-facing component (PFC) and the resulting mechanical properties of the copper and stainless steel joined by the hot-isostatic-pressing assisted diffusion bonding techniques
Keywords :
austenitic stainless steel; casting; chromium alloys; copper alloys; fusion reactor divertors; hot pressing; joining processes; tungsten; zirconium alloys; 0.75 ton; 15 mm; 316L cast stainless steel dome shield block; CuCrZr; CuCrZr plasma-facing component; ITER dome fabrication processes; International Thermonuclear Experimental Reactor; W; actively cooled; copper; diffusion bonded W-brush armor; divertor dome component; hot-isostatic-pressing assisted diffusion bonding; internal coolant passages; mechanical properties; stainless steel; tungsten; volumetric heating; Coolants; Copper; Diffusion bonding; Fabrication; Heating; Inductors; Mechanical factors; Plasma properties; Steel; Tungsten;
Conference_Titel :
Fusion Engineering, 1999. 18th Symposium on
Conference_Location :
Albuquerque, NM
Print_ISBN :
0-7803-5829-5
DOI :
10.1109/FUSION.1999.849860
