![]() ![]() ![]() 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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