Component metal alloy, chromimo-former type, use of such a component in an atmosphere rich in water vapor, interconnector electrolyzer eht and associated surface processing method.

The invention relates to a metallic alloy component (8) of chromia-former type, whose basic element is iron (Fe) or nickel (Ni), and at least a portion of the surface is coated with a single oxide (11) MOx likely to be at least partially reduced in the reducing atmosphere of a heat treatment that subsequently undergoes. The invention also relates to the sing of such a component in an atmosphere rich in water vapor, to an electrolyser interconnector EHT and associated surface processing method.