Performance differences between bare 17-4PH steel V103 profile (NACA 6505 with rounded leading edge (LE) and trailing edge (TE)) gas turbine engine axial compressor blades, and those coated with either a chromium-aluminum-titanium nitride (CrAlTiN) or a titanium-aluminum nitride (TixAl1−xN) erosion-resistant coating were tested. A coating thickness of 16 μm was used, based on experimental results in the literature. Coatings were applied using arc physical vapor deposition at the National Research Council of Canada (NRC). All blades were tested under identical operating conditions in the Royal Military College of Canada (RMC) turbomachinery erosion rig. Based on a realism factor (RF) defined by the authors, this experimental rig was determined to provide the best known approximation to actual compressor blade erosion in aircraft gas turbine engine axial compressors. An average brown-out erosive media concentration of 4.9 g/m3 of air was used during testing. An overall defined Leithead–Allan–Zhao (LAZ) score metric, based on mass and blade dimension changes, compared the erosion-resistant performance of the bare and coated blades. Blade surface roughness data were also obtained. Based on the LAZ Score, CrAlTiN-coated blades performed at least 79% better than bare blades, and TixAl1−xN-coated blades performed at least 93% better than bare blades. The TixAl1−xN-coated blades performed at least 33% better than the CrAlTiN-coated blades. Extrapolation of results predicted that a V-22 Osprey tiltrotor military aircraft, for example, could fly up to 79 more missions with TixAl1−xN-coated compressor blades in brown-out sand concentrations than with uncoated blades.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Enhanced Experimental Testing of New Erosion-Resistant Compressor Blade Coatings




    Publication date :

    2016




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    BKL:    52.30 / 52.52 / 52.52 Thermische Energieerzeugung, Wärmetechnik / 52.30 Strömungskraftmaschinen, Turbomaschinen




    Gas Turbine Aero Engine Compressor Blade Erosion and Heat Resistant Coatings

    Savkov, K. / Doroshko, S. / Urbaha, M. et al. | British Library Conference Proceedings | 2011


    Gas Turbine Aero Engine Compressor Blade Erosion and Heat Resistant Coatings

    Savkov, K. / Doroshko, S. / Urbaha, M. et al. | British Library Conference Proceedings | 2011



    Erosion resistant blade and blade coating

    KUMAR RAJESH S / BARTH ROBERT A / SCHMIDT WAYDE R | European Patent Office | 2019

    Free access