M. Nicolaus, B. Rottwinkel, K. Möhwald, C. Nölke, S. Kaierle, H.J. Maier, V. Wesling

In this paper new technologies for repairing turbine blades are exposed, in which manufacturing processes and materials mechanisms are incorporated. The turbine blades considered here are components of high pressure turbines. This is why the focus of this paper lies on nickel-based alloys. Depending on the size and form of the defects present on the blades, two procedures can be used for repairing turbine blades: cladding and/or high temperature brazing. On one hand a laser cladding process for crack repair was developed, this process can create a single-crystalline solidification of the cladding material. While on the other hand a hybrid repair brazing process was also developed, in which the brazing material and the hot gas corrosion protective coating were applied by means of thermal spraying; an aluminizing of the coating was also integrated into a transient-liquid-phase-bonding-process.

Deutscher Luft- und Raumfahrtkongress 2015, Rostock

Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn, 2017

Conference Paper

2. Aktualisierte Ausgabe

englisch

21,0 x 29,7 cm, 6 Seiten

urn:nbn:de:101:1-201701202629

brazing-aluminizing hybridprocess, single crystal cladding

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20.01.2017