Conception of operation of in situ oxide coating as applied to V/Li blanket

Development of in situ insulating coating onto inner wall of ducts is a promising way to mitigate the MHD pressure drop concerning V/Li blanket. The interdependence between structure of oxygen-containing V–4Ti–4Cr alloy and durability of Er2O3 insulator coating during contact with Li[Er] melt were studied and summarized. It was revealed that the inner oxidizing zone containing TiO2 precipitations and non-equilibrium defects formed in the V–4Ti–4Cr during pre-charging procedure provided the most efficient oxygen consumption for Er2O3 formation during contact of V-alloy with Li[Er]. The kinetic model of interaction of components in the V, Ti[O]–Li[Er] system is proposed.