Tungsten carbide thermal spray coatings are important to the aerospace industry for the mitigation of mid-pan damper wear on jet engine fan and compressor blades. However, for some cases the coating can fail due to spallation and cracking, and in othes situations the fatigue life of a fan or compressor blade is reduced when a coating is applied. Coating failures can result in decreased engine performance and costly maintenance time. The goals of this work are to provide insight and possible explanations for the reduced service life of coated mid-span dampers, identify the best coating and application processes for future use, and to develop methods for improving coating performance. To accomplish these goals, a comprehensive experimental research program was conducted at Volvo Aero Corporation in Trollhättan, Sweden to evaluate coating crack resistance in bending, low cycle fatigue properties of the coating and substrate, coating performance in jet engine tests, and microstructures for a wide range of coating compositions and application processes.


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    Title :

    Performance evaluations and selection of tungsten carbide thermal spray coatings for mid-span dampers


    Additional title:

    Leistungsbewertung und Materialauswahl für das thermische Beschichten von mittigen Dämpfern von Strahltriebwerken mit Wolframcarbid


    Contributors:
    Wigren, J. (author) / Pejryd, L. (author) / Greving, D.J. (author) / Shadley, J.R. (author) / Rybicki, E.F. (author)


    Publication date :

    1995


    Size :

    6 Seiten, 14 Bilder, 3 Tabellen, 11 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English






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