BERYLLIUM ARMOR PRODUCED BY EVAPORATION-CONDENSATION TECHNIQUE

Beryllium, as armour material for ITER plasma facing components, has a limited erosion lifetime. In order to repair the surface of eroded ti les in-situ, Be-deposition technologies are under consideration. One o f them uses the physical vapour deposition of beryllium on copper or b eryllium substrate produced by a hot Be-target placed in the vicinity of this substrate. Three different options for using this technology f or ITER Be-armour application are considered. The first option is the repair in-situ of eroded Be-tiles. The second option suggests the use of this technology to provide the joining of Be to Cu-substrate. The t hird option assumes the use of evaporated-condensed beryllium as a bul k tile material bonded to copper substrate by conventional joining (Br azing et al.) techniques. The first results and prospects of these app roaches are presented below. (C) 1997 Elsevier Science S.A.