Sökning: "vismut"

Visar resultat 1 - 5 av 13 uppsatser innehållade ordet vismut.

  1. 1. SSRT of 10-4 FeCrAl in LBE and Pb to Characterize Liquid Metal Embrittlement Effects

    Master-uppsats, KTH/Fysik

    Författare :Daniel Stein; [2022]
    Nyckelord :Liquid Metal Embrittlement; Lead; Bismuth; Lead-Bismuth Eutectic; Slow Strain Rate Testing;

    Sammanfattning : In this work the susceptibility of Fe-10Cr-4Al steel to liquid metal embitterment (LME)in low oxygen environment was investigated. slow strain rate testing (SSRT) wereconducted on 10-4 FeCrAl steel in a stagnant lead from 340-480◦C, lead-bismutheutectic (LBE) from 140-450◦C and lead-bismuth mixture at 375◦C with increasingbismuth content from 0. LÄS MER

  3. 2. An STM-based study of Bi deposition on InAs(110)

    Kandidat-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Författare :Tobias Alpskog; [2020]
    Nyckelord :Bismuth; Deposition; STM; Physics and Astronomy;

    Sammanfattning : III-V semiconductor compounds containing Bi, such as InBi, have recently attracted much attention due to predictions of band inversion and topological insulators. The predictions showed that films of InBi could be applicable in quantum computers and at room temperature. LÄS MER

  4. 3. Mineralogisk-mineralkemisk karakterisering av Nb-Ta-förande associationer från Stripåsenpegmatiten,Norberg

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Jens Henriksson; [2019]
    Nyckelord :Keywords: Y; REE; U; Th - Nb; Ta; Ti -oxides; pyrochlore supergroup; Nb-Ta- minerals; granitic pegmatite; SEM-EDS.; Nyckleord: Y; REE; U; Th - Nb; Ta; Ti -oxider; pyroklorsupergruppen; Nb-Ta-mineral; granitpegmatit; SEM-EDS.;

    Sammanfattning : Abstract Mineralogical-mineral chemical characterisation of Nb-Ta-bearingassemblages from the Stripåsen granitic pegmatite, NorbergJens Henriksson The occurrence of Nb-Ta-bearing minerals has earlier been briefly documented inthe Stripåsen granitic pegmatite, Norberg, central Bergslagen. This report describesthe background, preparation and basic characterisation of sampled Nb-Ta-bearingmineral assemblages from this pegmatite. LÄS MER

  5. 4. Preparation and Characteristics of Bi0.5Na0.5TiO3 based Lead-Free thin films by Pulsed Laser Deposition

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Ge Jiang; [2018]
    Nyckelord :PLD method; piezoelectric thin film; electrical properties; PLD-metoden; piezoelektrisk tunnfilm; elektriska egenskaper;

    Sammanfattning : Lead-based piezoelectric materials, such as PbZrxTi1-xO3 (PZT), have attracted considerable attention and have been widely used in actuators, sensors and transducers due to their excellent electric properties. However, considering the toxicity of lead and its oxides, environmentally friendly lead-free piezoelectric materials are attracting more attention as potential replacements for PZT. LÄS MER

  7. 5. Thermoelectric Cooler Prototype Based on Bismuth Telluride and Aimed for Space Applications

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad materialvetenskap

    Författare :Viktor Karlsson; [2017]
    Nyckelord :Thermoelectric cooler; bismuth telluride;

    Sammanfattning : The main goal for this project was to design, manufacture and evaluate a thermoelectric cooler, TEC, prototype. One of the biggest challenges with TECs is that they need to be very reliable and have a long lifetime. LÄS MER