Sökning: "composite microstructure"

Visar resultat 11 - 15 av 19 uppsatser innehållade orden composite microstructure.

  1. 11. Production of regenerated nanocomposite fibers based on cellulose and their use in all-cellulose composites

    Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Andrés García Vogel; [2017]
    Nyckelord :All-cellulose composites; regenerated cellulose nanocomposite fibers; halloysite nanotubes; cellulose nanocrystals; LiCl DMAc; bio based;

    Sammanfattning : Biobased all-cellulose composites (ACCs), in which the matrix and the reinforcement are made out of the same material, have gained a noticeable increased attention in recent years. Their successful application would solve the commonly faced challenges with natural fiber composites regarding their chemical antipathy between the hydrophilic fiber and the usually hydrophobic polymer matrix, while still keeping the advantages of being environmental friendly. LÄS MER

  3. 12. 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

  4. 13. Degradation mechanisms of UN and UN–10U3Si2 pellets of varying microstructure by comparative steam oxidation experiments

    Master-uppsats, KTH/Reaktorfysik

    Författare :Selim Uygur; [2016]
    Nyckelord :Uranium Mononitride; Uranium Silicide; Composite; Steam degradation; corrosion mechanism;

    Sammanfattning : During an extended LOCA in a LWR, the current UO2 fuel reaches very high temperatures and eventually melts, while the current Zircaloy fuel cladding oxidizes releasing hydrogen. These two consequences can lead to an unacceptable amount of radioactive release by presenting accident routes for containment failure. LÄS MER

  5. 14. Liquid Composite Molding of Multiphase Composites Using Resin with Nanofibrillated Cellulose : Distribution of Particles and Effect on Composite Properties

    Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Mikael Westin; [2016]
    Nyckelord :;

    Sammanfattning : Two objectives have served as the basis for the present work. The first objective was to experimentally verify the output of a Monte Carlo-based model on particle deposition in porous structures (i.e. fiber preform) during the resin transfer molding (RTM) process. LÄS MER

  7. 15. Fabrication and Characterization of UN-USix Nuclear Fuel

    Master-uppsats, KTH/Reaktorfysik

    Författare :Alicia Marie Raftery; [2015]
    Nyckelord :;

    Sammanfattning : In this thesis, UN-U3Si2 nuclear fuel was fabricated using spark plasma sintering and characterized to analyze the microstructure and crystal structure of the resulting pellets. This work was done in collaboration with accident tolerant fuel research, an effort which aims at developing nuclear fuel with superior safety and performance compared to currently used oxide fuels. LÄS MER