Die Lebensdauer dieser Schichten ist um den Faktor 2 bis 10 besser als beim Plasmaspritzen. Zur Herstellung von Waermedaemmschichten (WDS) fuer Turbinenleit- und Laufschaufeln der ersten beiden Stufen in der Hochdruckturbine wird fuer hoechste Ansprueche an die Schichtqualitaet das EB-PDV-Verfahren (electron-beam physical vapour deposition) eingesetzt. Some selected aspects of the interdependence between production parameters, microstructure of the thermal insulation layer and service life are gone into. The following characteristics of the ceramic layer have a decisive influence on the life of the composite system: Phase composition, distribution and stability, microstructure, density, thickness, crack distribution and cohesive strength. The layers have a lifetime that is longer by a factor of 2 to 10 than for plasma-sprayed layers. Thermal insulation layers for guide blades and rotor blades in the first two stages of a high-pressure turbines are produced by electron-beam physical vapour deposition for maximum quality. [Deutsche Forschungsanstalt fuer Luft- und Raumfahrt e.V. Structure and characteristics of EB-PVD thermal insulation layers Struktur und Eigenschaften von EB-PVD-WaermedaemmschichtenĮnergy Technology Data Exchange (ETDEWEB)
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