Institutt for materialteknologi
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Synthesis and Characterization of 12CaO·7Al2O3 Slags: The Effects of Impurities and Atmospheres on the Phase Relations
(Journal article; Peer reviewed, 2020)Synthesis of crystalline slags of 12CaO·7Al2O3 phase from the corresponding melt compositions in different atmospheric conditions and different purities is investigated. Observations using a thermogravimetry coupled with ... -
Hole annihilation vs. induced convection: Breakdown of different contributions to the photocorrosion mechanism of oxide-covered iron
(Peer reviewed; Journal article, 2021)The mechanism behind corrosion rate increase of anodised iron under illumination has been studied by comparing photocurrents with corrosion currents from polarisation curves under controlled convection. Under illumination ... -
Tuning Ni–MoO2 Catalyst–Ionomer and Electrolyte Interaction for Water Electrolyzers with Anion Exchange Membranes
(Peer reviewed; Journal article, 2021)Tailoring catalyst–ionomer and electrolyte interaction is crucial for the development of anion exchange membrane (AEM) water electrolysis. In this work, the interaction of Ni–MoO2 nanosheets with ionomers and electrolyte ... -
Microstructure Evolution and Recrystallization Resistance of a 7055 Alloy Fabricated by Spray Forming Technology and by Conventional Ingot Metallurgy
(Peer reviewed; Journal article, 2020)The effect of different fabricating processes (spray forming and conventional casting) and homogenization treatment on the microstructure of an 7055 alloy was investigated by optical microscopy (OM), scanning electron ... -
Tailoring microstructure and texture of annealed Al-Mn alloy through the variation of homogenization and prior cold deformation strain
(Peer reviewed; Journal article, 2020)The grain structures and crystallographic textures desired for various applications of aluminium alloys are usually modified by recrystallization during annealing. In this study, the interactions between recrystallization ... -
Defect-Enhanced Polarization Switching in the Improper Ferroelectric LuFeO3
(Peer reviewed; Journal article, 2020)Results of switching behavior of the improper ferroelectric LuFeO3 are presented. Using a model set of films prepared under controlled chemical and growth‐rate conditions, it is shown that defects can reduce the quasi‐static ... -
Multi-commodity price risk hedging in the Atlantic salmon farming industry
(Peer reviewed; Journal article, 2021)Cost management has received limited attention in the aquaculture industry due to historically high profit margins. This trend, however, is not likely to continue. This creates a need for knowledge on optimally managing ... -
Construction of three-dimensional MnO2/Ni network as an efficient electrode material for high performance supercapacitors
(Peer reviewed; Journal article, 2020)With the rapid growing interest and the usage of smart electronics devices, a considerable attention has been paid to improve the performance of energy storage devices. Herein, the 3D-MnO2/Ni electrode was fabricated using ... -
Experimental setup for high-temperature in situ studies of crystallization of thin films with atmosphere control
(Peer reviewed; Journal article, 2020)Understanding the crystallization process for chemical solution deposition (CSD) processed thin films is key in designing the fabrication strategy for obtaining high-quality devices. Here, an in situ sample environment is ... -
CO and CO2 Anode Gas Concentration at Lower Current Densities in Cryolite Melt
(Peer reviewed; Journal article, 2020)This work aims to study the CO-CO2 gas composition at low potentials and low current densities in cryolite melt with relatively low alumina content (≤2 wt%). There is a scarcity of data in the literature regarding the low ... -
Inverse modelling of interfacial tension between ferroalloy and slag using openfoam
(Chapter, 2020)The entrainment of molten ferroalloy droplets in slag during tapping operations is strongly related to turbulence and interfacial forces between alloy and slag. Therefore, interfacial phenomena are of great importance for ... -
On modelling electrochemical gas evolution using the volume of fluid method
(Chapter, 2020)In this work we describe the various building block relevant in simulating electrochemical gas evolution using Volume of Fluid (VOF) method. These building blocks are implemented in the VOF solver available in OpenFOAM® ... -
Poling-induced inverse time-dependent microstrain mechanisms and post-poling relaxation in bismuth ferrite
(Peer reviewed; Journal article, 2020)Domain-wall dynamics under strong, super-coercive electric fields in polycrystalline bismuth ferrite (BiFeO3) are not well established due to the experimental difficulties in processing high phase purity perovskite with ... -
Revealing the Subsurface Basal <a> Dislocation Activity in Magnesium Through Lattice Rotation Analysis
(Peer reviewed; Journal article, 2020)A method was proposed in this study to reveal the subsurface basal dislocation activity in Mg-Y alloy and determine the corresponding Burgers vector. This is achieved by correlating the slip directions of dislocations to ... -
Comparative study of AC and DC solvers based on current and power distributions in a submerged arc furnace
(Peer reviewed; Journal article, 2020)This work discusses 3D models of current distribution in a three-phase submerged arc furnace that contains several components, such as electrodes, central arcs, craters, crater walls, and side arcs that connect electrodes ... -
Condensation of SiO and CO in silicon and ferrosilicon production
(Doctoral theses at NTNU;2021:93, Doctoral thesis, 2021)Kondensasjon av SiO(g) er kombinasjon av to reaksjoner i silisiumprosessen. Den første er interaksjonen mellom SiO(g) og CO(g). Den andre er reaksjonen mellom to SiO(g) molekyler. Disse to reaksjonene foregår i lavtemperatursonen ... -
Solid Electrolyte Interphase (SEI) Formation on the Graphite Anode in Electrolytes Containing the Anion Receptor Tris (hexafluoroisopropyl) borate (THFIPB)
(Peer reviewed; Journal article, 2020)Addition of small amounts of tris(hexafluoroisopropyl)borate (THFIPB) has previously been shown to improve the capacity of graphite anodes in a wide temperature window during long-term cycling in electrolytes based on LiPF6 ... -
Recycling of tellurium via copper smelting processes
(Peer reviewed; Journal article, 2020)The modern world continuously demands more raw materials for manufacturing all kinds of products. Nowadays, the lifetime of a single product can be very short, as is the case with electronic appliances. Waste electrical ... -
Effect of a Boron Based Anion Receptor on Graphite and LiFePO4 Electrodes
(Peer reviewed; Journal article, 2020)The effect of a boron based anion receptor, tris (hexafluoroisopropyle) borate (THFIPB), on the electrochemistry of graphite was investigated in 1 M LiPF6 in ethylene carbonate/dimethyl carbonate (EC/DMC, 1:1 by weight) ... -
Recovery of Precious Metals (Au, Ag, Pt, and Pd) from Urban Mining Through Copper Smelting
(Peer reviewed; Journal article, 2020)With the aim of investigating deportments of precious metals in pyrometallurgical processing of waste electrical and electronic equipment, the distributions of selected precious metals (gold, silver, platinum, and palladium) ...
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