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Directionality and column arrangement principles of precipitates in Al-Mg-Si-(Cu) and Al-Mg-Cu linked to line defect in Al
(Journal article, 2016)In the structures of all metastable precipitates in Al-Mg-Cu and Al-Mg-Si alloys, we find that column surrounding of an element column in the needle/lath direction order according to simple principles. Advanced transmission ... -
Discussion of bi-film index and LiMCA data in industrial aluminum remelting trials
(Journal article; Peer reviewed, 2018)The trend in the aluminum high end market is to set unrealistic quality requirements e.g. inclusion free metal. The importance of quality and the ability to measure is growing. LiMCA is a unique, well-established tool for ... -
Disintegration of Six Different Quartz Types during Heating to 1600 °C
(Journal article; Peer reviewed, 2023) -
Dislocation behavior in a polycrystalline Mg-Y alloy using multi-scale characterization and VPSC simulation
(Peer reviewed; Journal article, 2022)In this study, the dislocation behavior of a polycrystalline Mg-5Y alloy during tensile deformation was quantitatively studied by an in-situ tensile test, visco-plastic self-consistent (VPSC) modeling, and transmission ... -
Dislocation-Driven Relaxation Processes at the Conical to Helical Phase Transition in FeGe
(Journal article, 2021)The formation of topological spin textures at the nanoscale has a significant impact on the long-range order and dynamical response of magnetic materials. We study the relaxation mechanisms at the conical-to-helical phase ... -
Dislocations in ceramic electrolytes for solid-state Li batteries
(Peer reviewed; Journal article, 2021)High power solid-state Li batteries (SSLB) are hindered by the formation of dendrite-like structures at high current rates. Hence, new design principles are needed to overcome this limitation. By introducing dislocations, ... -
Dislocations in directionally solidified crystalline silicon: Generation mechanisms and interactions
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:193, Doctoral thesis, 2013)The growth of crystalline silicon from crucibles by directional solidification will invariably cause structural defects in the material. In addition, the casting process leads to the incorporation of impurities, and the ... -
Dislocations in Multicrystalline Silicon for Solar Cells: Microstructure and Sources
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:169, Doctoral thesis, 2012)The study of defects especially dislocations and grain boundaries in semiconductors has received a great deal of attention for over 60 years, primarily due to the importance of the defects in microelectronics. The defect ... -
Dispersion and dissolution of alumina in cryolite melts: impact of sulfur and carbon on dissolution behavior in see through cell
(Master thesis, 2021)Aluminium blir produsert industrielt ved hjelp av Hall-Herôult metoden. Denne metoden produserer flytende aluminium fra aluminiumoksid (kalt alumina) og karbon i ett bad med flytende kryolitt. Denne prosessen krever høy ... -
Dispersion, Performance and Durability of Pt Nanoparticles on Carbon for PEM Fuel Cell Catalysis
(Doctoral theses at NTNU;2014:298, Doctoral thesis, 2014)The main objective of this work has been to develop the understanding of the effect of Pt particle dispersion on activity and durability of the Pt/C electrocatalysts. In order to have such understanding, extensive testing ... -
Dispersoid Structures and Properties of Cr and Zr-containing 6xxx Extrusion Alloys
(Master thesis, 2015)The overall objective of this work has been to study the dispersoid structures introduced by adding Cr and Zr to an AA6082 alloy and other features which may influence and improve the mechanical properties of the alloy. ... -
Dissolution Characteristics and Concentration Measurements of Alumina in Cryolite Melts
(Peer reviewed; Journal article, 2021)Alumina dissolution is one of the most important processes in the Hall-Héroult process. In this work, video recording using a high-speed camera and a see-through cell and electromotive force (emf) based alumina sensor ... -
Dissolution kinetics of carbon materials in FeMn
(Doctoral theses at NTNU;2019:226, Doctoral thesis, 2019)Submerged electric arc furnace (SAF) is the main process for industrial production of ferroalloys, in which metal oxides are reduced by carbon. To decrease the production cost and reduce the CO2 emissions, a variety of ... -
Dissolution Rate and Wettability of SiO2-CaO-Al2O3 Slags on Quartz
(Master thesis, 2023)Denne studien har som mål å undersøke fuktningsgraden og reaksjonskinetikken av SiO2 –CaO–Al2O3 slagg på industriell kvarts for å forstå interaksjonene mellom industrislagg og -kvarts i silisium- og ferrosilisiumproduksjon. ... -
Distinguishing bainitic and martensitic microstructures in high strength steels using advanced characterization methods
(Master thesis, 2020)Gjennom dette arbeidet har to legeringer; 103Cr3/103C3 og 34CrNiMo6, blitt varmebehandlet til perlittisk/ferritisk, bainittisk og martensittisk struktur for å bli studert i SEM. Å skille mellom bainittiske og martensittiske ... -
Distinguishing Martensite from Ferrite in Mild Steels with EBSD using Dictionary Indexing
(Master thesis, 2023)Å få innsikt i strukturen og sammensetningen av materialer er avgjørende innen materialvitenskap. Elektron-tilbakespredningsdiffraksjon (EBSD) i elektronmikroskopet (SEM) er en mye brukt karakteriseringsteknikk som muliggjør ... -
Distribution of Aluminum and Calcium between Silicon and CaO-Al2O3-SiO2 Slags at 1650 °C
(Master thesis, 2020)Hovedformålet med oppgaven var å undersøke likevekten mellom silisium (Si) og calcia-alumina (CaO-Al2O3) slagger. Ved å variere forholdet mellom metall og slagg i dette systemet vil det ideelt sett bli en linje på i den ... -
Distribution of boron between silicon and CaO-SiO2, MgO-SiO2,CaO-MgO-SiO2 and CaO-Al2O3-SiO2 slags at 1600°C
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:326, Doctoral thesis, 2013)New energy sources are needed for a sustainable future. Solar cells have a huge potential as a sustainable energy source but further development of this technology is needed for solar cells to become cost-competitive with ... -
Distribution of Phosphorus between FeSi/Si and CaO-SiO2 Slags at 1600o C
(Master thesis, 2017)The aim of this thesis was to determine data for the phosphorus(P) distribution coefficients between ferrosilicon(FeSi) or silicon(Si) and calcia-silica(CaO SiO2) slags. The work was carried out due to inconsistencies ... -
Does power ultrasound (26 kHz) affect the hydrogen evolution reaction(HER) on Pt polycrystalline electrode in a mild acidic electrolyte?
(Peer reviewed; Journal article, 2020)In this study, we investigated the effects of power ultrasound (26 kHz, up to ∼75 W/cm2, up to 100% acoustic amplitude, ultrasonic horn) on the hydrogen evolution reaction (HER) on a platinum (Pt) polycrystalline disc ...