The EU design of the ITER Divertor Wing envisages the use of tungsten as an armour because of its low sputter rate. To guarantee an adequate armour lifetime a minimum thickness of 5 mm is required. A promising technology to apply W as an armour for extended surfaces is the Plasma Spray Process (PS). Aim of the activity was qualifying a PS able to realise up to 5 mm thick W coating on Copper Chromium Zirconium (CuCrZr) tube substrate (Dout=50 mm, Din=40 mm and length=150 mm) to be tested with respect to thermal fatigue under High Heat Flux. Several samples were manufactured, and in particular: many flat samples for selection of the spraying parameters; four tubular samples 50 mm long with W coating thickness of 4 mm; two tubular mock ups 150 mm long with coating thickness of 3 and 5 mm. Thermal fatigue tests were performed at the electron beam facility FE200 (Le Creusot-France). The mock up with 5 mm thick W coating realised with Low Pressure Plasma Spray technique survived without any damage 1000 cycles at 2 MW/m2 and 200 cycles at 4 MW/m2.
|Publication status||Published - 1998|
|Event||Proceedings of the 1997 17th IEEE/NPSS Symposium on Fusion Engineering. Part 1 (of 2) - , Unknown|
Duration: 1 Jan 1998 → …
|Conference||Proceedings of the 1997 17th IEEE/NPSS Symposium on Fusion Engineering. Part 1 (of 2)|
|Period||1/1/98 → …|
All Science Journal Classification (ASJC) codes
- Industrial and Manufacturing Engineering
Riccardi, B., Pizzuto, A., Bertamini, L., Diotalevi, M., & Vieider, G. (1998). Development of tungsten coatings for ITER divertor components. Paper presented at Proceedings of the 1997 17th IEEE/NPSS Symposium on Fusion Engineering. Part 1 (of 2), Unknown.