Functionally graded HVOF sprayed NiCr-Al2O3 coatings for demanding applications

Erja Turunen, Tommi Varis, Kimmo Ruusuvuori, Tom E. Gustafsson, Simo-Pekka Hannula, M. Gasik, E. Antila

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review


    Functionally graded (FG) coatings were manufactured by High Velocity Oxy-Fuel (HVOF) thermal spraying and tested aiming for the high temperature applications. Single layers were manufactured and their elastic modulus measured by using Impulse Excitation Technique (IET). Obtained data was used for modeling of optimal gradient structure. Dual feeding hose for HVOF gun was developed. Calibration procedure for the concurrent use of two powder feeders was performed. NiCr-Al2O3 coatings with coating thickness of 600 µm and 1000 µm were manufactured and tested. Promising results were obtained from high temperature corrosion tests.
    Original languageEnglish
    Title of host publicationThermal Spray 2003
    Subtitle of host publicationProceedings from the International Thermal Spray Conference, ITSC 2003
    PublisherASM International
    ISBN (Print)978-0-87170-785-7
    Publication statusPublished - 2003
    MoE publication typeA4 Article in a conference publication
    EventInternational Thermal Spray Conference, ITSC 2003: advancing the science and applying the technology - Orlando, United States
    Duration: 5 May 20038 May 2003


    ConferenceInternational Thermal Spray Conference, ITSC 2003
    Country/TerritoryUnited States


    • thermal spray
    • corrosion
    • elastic modulus
    • coatings


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