hochtemperaturfeste anticorrosive coating, in particular for gasturbinenbauteile.

摘要

A high-temperature-resistant, corrosion-resistant coating, in particular for components of gas turbines, which possesses good corrosion-resistant properties at temperatures between 600 and approximately 1150 DEG C, contains the following elements (in weight percent): 25-40 % nickel, 28-32 % chromium, 7-9 % aluminium, 1-2 % silicon, 0.3-1 % yttrium, the remainder cobalt, at least 5 %, and unavoidable impurities. Various optional constituents may also be present. The properties of the corrosion-resistant coating can be further enhanced by the addition of rhenium even in minute quantities. The preferred range is 4-10 % rhenium. The corrosion-resistant coating is particularly suitable for components in the inlet region of gas turbines with high inlet temperature, which must also operate occasionally at partial load.