A low-Z C + SiC alloy coating material for plasma interface applications

Abstract A new C + SiC alloy material has been developed for fusion in-vessel components. Limiter/armor tiles coated with this material have been tested for over 16000 plasma shots during routine operation of Doublet III. The performance has been excellent. Simulation tests have shown this C + SiC alloy to be highly resistant to chemical sputtering below 1000 ° C and to be resistant to damage from thermal shocks. The low Z characteristic is advantageous in reducing plasma energy loss from impurities.