FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy, namely to the protective coating to protect the structural part against corrosion and/or oxidation. Alloy without rhenium based on nickel, with corrosion and/or oxidation resistance contains in wt %: cobalt 24-26, chrome 12-15, aluminium 10.5-11.5, at least one element being scandium and/or rare-earth elements, in particular yttrium 0.1-0.7, tantalum 0.1-3, optionally silicon 0.05-0.6, nickel - rest. The protective coating is made out of specified alloy. The structural part, in particular, structural part (120, 130, 155) of gas turbine (100) containing substrate (4) out of nickel or cobalt based alloy, protective coating, and ceramic thermal barrier layer (10), at that specified ceramic thermal barrier layer (10) is applied, in particular, on the protective coating (7).
EFFECT: protective coating has high resistance against high-temperature corrosion and oxidation, has long-term stability.
12 cl, 5 dwg
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