Avancerad sökning

Visar resultat 1 - 5 av 17 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Improving polarizing neutron optics by introducing 11B4C as interlayers

    Master-uppsats, Linköpings universitet/Tunnfilmsfysik

    Författare :Martin Falk; [2023]
    Nyckelord :Thin film multilayers; Neutron optics; Neutron polarization;

    Sammanfattning : In this report, the effects of adding 11B4C as interlayers into Fe/Si multilayers is studied. Fe/Si multilayers are commonly used for neutron polarization at large research facilities, and improving the polarizing properties would improve their efficiency. LÄS MER

  3. 2. Synthesis and thermoelectric properties of Cr1-xMexN (Me = Mo, V)

    Master-uppsats, Linköpings universitet/Tunnfilmsfysik

    Författare :Victor Rutberg; [2022]
    Nyckelord :Chromium nitride; thin films; thermoelectrics; physical vapour deposition; medium entropy alloy;

    Sammanfattning : Among emerging materials systems for thermoelectric applications, the early transition-metal nitrides based on ScN and CrN show unexpectedly promising properties. These properties are determined by high Seebeck coefficient, low thermal conductivity, and high electrical conductivity. LÄS MER

  4. 3. Magnetron Sputter Epitaxy of High-quality GaNand Plasma Characterization of the Process : Degree Project–Master’s Thesis

    Master-uppsats, Linköpings universitet/Tunnfilmsfysik

    Författare :Yi-Ling Lo; [2021]
    Nyckelord :GaN; Semiconductors; Nanomaterials; Thin film; Magnetron Sputtering; Epitaxy; XRD; Physical Vapor Deposition;

    Sammanfattning : Several sputtering depositions were done by direct current (DC) magnetron sputtering epitaxy (MSE) techniquefor the goal of improving the growth rate and crystalline quality of GaN thin film on Al2O3 substrate. Thegrowth rate was higher when substrate-to-target distance D = 7 cm compared with D = 9. LÄS MER

  5. 4. Multicomponent TiNbCrAl nitride films produced by DCMS and HiPIMS

    Master-uppsats, Linköpings universitet/Tunnfilmsfysik

    Författare :Grzegorz Sadowski; [2021]
    Nyckelord :High entropy nitrides; thin film; HiPIMS; hardness;

    Sammanfattning : High entropy alloys (HEAs) are made of at least five principal elements in near-equimolar proportions. The vast number of possible alloys and unconventional combinations of properties are the main benefits of HEAs. Ti, Nb, Cr, Al and N were chosen in order to create a hard, corrosion resistant coating with good thermal stability. LÄS MER

  7. 5. Surface Engineering of Bipolar Plates for PEM-Water Electrolysis : Cost-Effective Corrosion Protection

    Master-uppsats, Linköpings universitet/Tunnfilmsfysik

    Författare :Tristan Dettke; [2021]
    Nyckelord :Hydrogen; Water Electrolysis; Fuel Cells; Bipolar Plates; Thin Films; Coatings; Impact Coatings; IFM; Tristan Dettke; PEM;

    Sammanfattning : Hydrogen production by PEM-Water electrolysis is an environmentally benign and promising approach to store excess energy from renewable energy sources but facing drawbacks of high costs, mainly due to a harsh cell-environment. The aim of my Master Thesis was to reduce the costs of the most expensive cell component, the bipolar plate by surface engineering. LÄS MER