ALLOY, PROTECTIVE LAYER AND STRUCTURAL ELEMENT

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Alloy comprises 22-24, preferably 23 wt.% of cobalt, 14-16, preferably 15% of chromium, 10.5-11.5, preferably 11 wt.% of aluminum, 0.2-0.4, preferably 0.3 wt.% of at least one metal consisting of scandium and/or rare earth element, preferably yttrium, optionally 0.3-0.9, preferably 0.5 wt.% of tantalum and balance of nickel. Independent claims are included for : (1) a layer (7) for protecting a component (1, 120, 130, 155) against corrosion and/or oxidation, preferably at high temperatures comprising the alloy; and (2) the component, preferably the component of a gas turbine, where a substrate (4) of the component is based on nickel or cobalt, the protective layer is applied on the substrate and the protective layer is a ceramic heat insulation layer (10).