Sökning: "TBCs"

Visar resultat 1 - 5 av 10 uppsatser innehållade ordet TBCs.

  1. 1. Erosion Behaviour of Thermal Barrier Coatings

    Master-uppsats, Linköpings universitet/Konstruktionsmaterial

    Författare :Caroline Wännman; [2021]
    Nyckelord :erosion; TBC; APS; EB-PVD; PS-PVD; failure mechanisms;

    Sammanfattning : Thermal barrier coatings (TBCs) are advanced material systems used in the hot sections of gas turbines. The TBCs are designed to provide insulation against hot gases by a ceramic top coat and to provide oxidation and corrosion resistance by a metallic bond coat. LÄS MER

  3. 2. Understanding the effect of material composition and microstructure on the hot corrosion behaviour of plasma sprayed thermal barrier coatings

    Magister-uppsats, Högskolan Väst/Avdelningen för avverkande och additativa tillverkningsprocesser (AAT)

    Författare :Ehsan Najafi; [2019]
    Nyckelord :Thermal barrier coatings; molten salt infiltration; TBC variations; hot corrosion test;

    Sammanfattning : Thermal barrier coatings (TBC) are used in the hot sections of gas turbine engine in order to insulate the substrate at high temperature. Molten salt infiltration retards the durability of TBCs. The current standard material, i.e. LÄS MER

  4. 3. Failure analysis of suspension plasma sprayed thermal barrier coatings

    Magister-uppsats, Högskolan Väst/Forskningsmiljön produktionsteknik(PTW)

    Författare :Mohammed Jasim; [2017]
    Nyckelord :Failure analysis; Suspension plasma sprayed; Thermal barrier coating;

    Sammanfattning : Thermal barrier coatings (TBC) are proven to protect the hot section of components operated under elevated temperature. Suspension Plasma Spray (SPS) is an emerging manufacturing process that is used to produce TBCsI, It has the ability to deposit a thinner TBC that has finer microstructure than coatings deposited using traditional Atmospheric Plasma Spray (APS). LÄS MER

  5. 4. Skräddad mikrostruktur av gadolinium zirkonat baserade värmebarriärbeläggningar som utsätts för termisk cyklisk utmattning

    Magister-uppsats, Högskolan Väst/Avdelningen för avverkande och additativa tillverkningsprocesser (AAT)

    Författare :Cliff Hamatuli; [2017]
    Nyckelord :Suspension Plasma Spray; Gadolinium Zirconate; Thermal cyclic fatigue;

    Sammanfattning : Yttria Stabilized Zirconia (YSZ) is the standard ceramic top coat material used for TBC application. Above 1200°C, issues such as CMAS (Calcium Magnesium Alumino Silicates) infiltration susceptibility, phase instability and high sintering rates limits its long durability. LÄS MER

  7. 5. Measurement of Thermal Insulation properties of TBC inside the Combustion chamber

    Uppsats för yrkesexamina på grundnivå, Luleå tekniska universitet/Materialvetenskap

    Författare :Siamak Kianzad; [2017]
    Nyckelord :Materials; TBC; Thermal barrier coating; heat flux; crack; combustion chamber; heavy duty diesel engine; single-cylinder; dummy valve; 8YSZ; YSZ; segmented cracks; radiative heat transfer; lanthanum gadolinium; EB-PVD; PVD; APS; CVD; horizontal cracks; vertical cracks; crack propagation; crack initiation;

    Sammanfattning : This master thesis project was performed in collaboration with Scania CV AB, Engine Materials group. The purpose with the project was to investigate different ceramic TBC (Thermal Barrier Coating) thermal insulation properties inside the combustion chamber. LÄS MER