The use of ceramic composite materials in aerospace applications requires the development of oxidization protection coatings which can withstand very high temperatures. HfO2 is a promising material as a high temperature oxidization protective layer. HfO2 coatings have been deposited by radiation frequency magnetron sputtering all over the surface of SiC substrates and were tested under re-entry conditions. Also their oxidization resistance in air in the temperature range 1100 to 1450 deg C has been examined. The coatings were found to be stable and well-adhering to the substrate even after 100 re-entry cycles. No oxidization of the underlying SiC structure is observed. Re-entry and oxidization tests result in the formation of HfSiO4 at the HfO2/SiC interface, which further promotes their oxidization resistance.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Thermo-mechanical behaviour of HfO2 coatings for aerospace applications


    Additional title:

    Thermomechanisches Verhalten von HfO2-Beschichtungen für Raumfahrtanwendungen


    Contributors:


    Publication date :

    2008


    Size :

    5 Seiten, 7 Bilder, 9 Quellen





    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Detonation Sprayed Coatings for Aerospace Applications

    Rao, D. Srinivasa / Rama Krishna, L. / Sundararajan, G. | Springer Verlag | 2016


    Nanocomposite tribological coatings for aerospace applications

    Voevodin, A.A. / O'Neill, J.P. / Zabinski, J.S. | Tema Archive | 1999


    Radiation tolerant fiber optic thermo-hygrometers for aerospace applications

    Berruti, G. / Consales, M. / Cutolo, A. et al. | IEEE | 2014


    Aerospace and aircraft coatings

    Chattopadhyay, Ashok K. | TIBKAT | 1990


    New generation aerospace coatings

    Emerald Group Publishing | 2006