Abstract
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 Er 2O 3 insulator coating during contact with Li[Er] melt were studied and summarized. It was revealed that the inner oxidizing zone containing TiO 2 precipitations and non-equilibrium defects formed in the V–4Ti–4Cr during pre-charging procedure provided the most efficient oxygen consumption for Er 2O 3 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.
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