BERYLLIUM-METALS JOINTS FOR APPLICATION IN THE PLASMA-FACING COMPONENTS

The results of the technological development for Be joining with other metals for high heat flux application are presented. The different ty pes of joining technology - high temperature brazing by using the diff erent brazing alloys and solid state diffusion bonding are compared. T he results of diffusion bonding technology development for Be-Cu and B e-dispersion strengthened copper alloys joinings are presented. It was shown that for the joining of Be with austenitic stainless steels, th e vacuum high temperature brazing using the ternary brazing alloy of A g-Cu-Me system is more preferable than common eutectic Ag-Cu alloy. Th e high temperature brazing technology for joining Be-Be using the Al b razing alloys was also analyzed. The problems of nondestructive examin ation of Be joints, the data on mechanical properties, microhardness t esting and results of microstructural examination of Be joint are pres ented.