Plasma-sprayed beryllium for ITER
- Los Alamos National Lab., NM (United States)
- Sandia National Lab., Albuquerque, NM (United States)
Plasma-spray technology is under investigation as a method for producing high thermal conductivity beryllium coatings for use in magnetic fusion applications. Recent investigations have focused on optimizing the plasma-spray process for depositing beryllium coatings on damaged beryllium surfaces. Of particular interest has been optimizing the processing parameters to maximize the through-thickness thermal conductivity of the beryllium coatings. Experimental results will be reported on the use of secondary H{sub 2} gas additions to improve the melting of the beryllium powder and negative transferred-arc cleaning to prepare beryllium surfaces prior to depositing beryllium. Information will also b presented on thermal fatigue tests which were performed on beryllium coated ISX-B beryllium limiter tiles using 10 sec cycle times with 60 sec cooldowns and an International Thermonuclear Experimental Reactor (ITER) relevant divertor heat flux slightly in excess of 5 MW/m{sup 2}.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- OSTI ID:
- 505882
- Report Number(s):
- CONF-950905--; ISBN 0-7803-2970-8
- Country of Publication:
- United States
- Language:
- English
Similar Records
Optimizing the thermal conductivity of plasma-sprayed beryllium coatings for fusion applications
The development of beryllium plasma spray technology for the International Thermonuclear Experimental Reactor (ITER)