The aim of this study is to develop for thermal barrier applications a new process in which coatings exhibit properties between those of APS and EBPVD. This process includes two conventional D.C. plasma torches working in a chamber whose pressure can vary between 30 and 100 kPa. Micro-sized yttria stabilized zirconia powders are injected in both plasma jets to vaporize them, at least partially, and produce finely-structured coatings from vapor and micro-droplets deposition. The torch arrangement allows separating the vapor and the very small particles (less than 1 micron) from the partially vaporized bigger ones. The diagnostics are based on optical emission spectroscopy, pyrometry, imaging of particles trajectories and coating microstructural characterization.


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    Title :

    Processing and properties of hybrid YSZ coating deposited by thermal plasma directed vapor deposition


    Contributors:
    Lavaud, T. (author) / Vardelle, M. (author) / Fauchais, P. (author) / Menuey, J. (author)


    Publication date :

    2008


    Size :

    5 Seiten, 8 Bilder, 6 Quellen


    Remarks:

    (nicht paginiert)



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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