FEUERFESTES MATERIAL FÜR HOCHTEMPERATUR- ANWENDUNGEN

摘要

A component comprises a body coated with an adherent multi-layer protective coating which during operation is exposed to molten aluminium. The protective coating has an outer layer which is wettable by molten aluminium by penetration thereof into the outer layer, and an aluminium-repellent layer underneath forming a barrier to molten aluminium on the body which prevents exposure of the body to molten aluminium.