| 简介 |
Protective layer for protecting a component against corrosion and oxidation at high temperatures comprises 0.5-2 wt.% rhenium, 15-21 wt.% chromium, 9-11.5 wt.% aluminum, 0.05-0.7 wt.% yttrium and/or at least one equivalent metal from the group containing scandium and the rare earth elements, 0-1 wt.% ruthenium, and cobalt and/or nickel, and process-induced impurities. Preferred Features : The protective layer comprises 1.5 wt.% rhenium, 17 wt.% chromium, 10 wt.% aluminum, 0.3 wt.% yttrium and/or an equivalent metal from the group containing scandium and the rare earth elements. The content can vary in the usual way during industrial production. The protective layer contains so little chromium/rhenium deposits that no appreciable embrittlement of the protective layer occurs. |
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