ALLOY, PROTECTIVE LAYER FOR PROTECTING A COMPONENT AGAINST CORROSION AND OXIDATION AT HIGH TEMPERAT

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Known protective layers with a high Cr content and additionally a silicon form brittle phases, which become even more brittle under the influence of carbon during use. The protective layer according to the invention has the composition 27%% to 31%% nickel, 23%% to 29%% chromium, 7%% to 11%% aluminium, 0.5%% to 0.7%% yttrium and/or at least one equivalent metal from the group comprising scandium and rare earth elements, optionally 0.6%% to 0.8%% silicon, optionally 0.5%% to 0.7%% zirconium and the remainder cobalt. © KIPO & WIPO 2007