10 µm Coating Outer Layer Coating Inner Layer Coating Outer Layer Coating Inner Layer 10 µm Al (at)-2kh C.-Fe-Al-dep.-2kh C.-Fe-Al-ind.-2kh C.-Fe-Cr-Al-2kh C.-Fe-Ni-Al-2kh Composition in at%, Normalized Distance from coating surface (µ µ µ µm) (b) (a) Measured profile Cal. (binary, ind.) Cal. (Fe-Cr-Al) Cal. (Fe-Ni-Al) Measured profile Cal. (binary, ind.) Cal. (binary, dep.) Cal. (Fe-Cr-Al) Cal. (Fe-Ni-Al)