Microstructure and properties of TiC-CrNiMo SHS spray powder and thermally sprayed coating

Mervi Väisänen, Petri Vuoristo, Tapio Mäntylä, Pekka Lintula, Jukka Maunu, Pertti Lintunen

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

    5 Citations (Scopus)

    Abstract

    Titanium carbide cermet spray powder was produced by the SHS process (Self-propagating High-temperature Synthesis) using elemental Ti, C, Mo and prealloyed CrNiMo powders as starting materials. The powder was characterised (particle size distribution, phase structure, morphology) and the internal structure of each cermet particle was found out to be dense consisting of fine distribution of carbides embedded in a metallic matrix. The particle size range suitable for thermal spraying was obtained by sieving and air classifying. The coatings were prepared by HVOF spraying (DJH2600 and DJH2700). The dry abrasion wear resistance was evaluated by the rubber wheel abrasion wear test and electrochemical corrosion behaviour by open circuit potential measurements. According to the XRD analysis the amount of retained carbides in the coatings is high and the carbide phase has a spherical shape also in the coatings. The microstructure of coatings obtained is dense and the coatings possess good properties in wear and corrosion tests. WC-Co-Cr and Cr3C2-NiCr powders were used for comparison.
    Original languageEnglish
    Title of host publicationThermal Spray 2000: Surface Engineering via Applied Research
    Subtitle of host publicationProceedings of the 1st International Thermal Spray Conference
    PublisherASM International
    ISBN (Print)978-1-61503-206-8
    Publication statusPublished - 2000
    MoE publication typeB3 Non-refereed article in conference proceedings
    EventInternational Thermal Spray Conference, ITSC 2000 - Montreal, Canada
    Duration: 8 May 200011 May 2000

    Conference

    ConferenceInternational Thermal Spray Conference, ITSC 2000
    Country/TerritoryCanada
    CityMontreal
    Period8/05/0011/05/00

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