Compatibility between SiC and Li ceramics for solid breeding blanket system

Compatibility of high crystalline β-SiC in contact with Li ceramics was studied. Isothermal annealing of the stack of monolithic β-SiC and Li ceramics (Li 2 TiO 3 , Li 4 SiO 4 , Li 2 ZrO 3 and LiAlO 2 ) in helium was carried out at the temperature of 900 and 1000 °C for 100 h. No bonding between β-SiC and Li ceramics occurred for all the experiment conditions. Adhering substance composed by Li 2 SiO 3 on the β-SiC surface and diffusion of 7 Li and 16 O to bulk β-SiC was clearly observed for the β-SiC specimen in contact with Li 2 TiO 3 , Li 4 SiO 4 and Li 2 ZrO 3 . While, small amount of the adhering substance and small diffusion those elements were observed for the β-SiC specimen in contact with LiAlO 2 .