Institutt for materialteknologi
Recent Submissions
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Heating New Anodes Using the Waste Heat of Anode Butts: Establishing the Interface Thermal Contact Resistance
(Peer reviewed; Journal article, 2021)In order to be able to assess the rate of heat transfer between a new anode and an anode butt, it is critical to measure the interface thermal contact resistance between them. For that purpose, a lab experiment has been ... -
Chromium coatings from trivalent chromium plating baths: Characterization and cathodic delamination behaviour
(Peer reviewed; Journal article, 2021)Novel two-layer chromium-based coatings comprised of a first layer containing chromium, oxygen and carbon (Cr-O-C) and an oxygen rich (Cr-O) topcoat were electrodeposited from trivalent chromium electrolyte. The complex ... -
The Structure, Morphology, and Complex Permittivity of Epoxy Nanodielectrics with in Situ Synthesized Surface-Functionalized SiO2
(Peer reviewed; Journal article, 2021)Epoxy nanocomposites have demonstrated promising properties for high-voltage insulation applications. An in situ approach to the synthesis of epoxy-SiO2 nanocomposites was employed, where surface-functionalized SiO2 (up ... -
Electrolysis of indium oxide in LiCl-KCl based molten salts with a liquid cathode
(Peer reviewed; Journal article, 2020)In this work, the feasibility of extracting of metallic indium from In2O3and ITO through the direct electrochemical reduction at 450°C in molten salt LiCl-KCl was studied. Cyclic voltammetry was carried out to study the ... -
The beginning and the end of the aluminium value chain
(Peer reviewed; Journal article, 2020)Metallic aluminium does not naturally occur in nature, and it was largely unknown, virtually a mystery, until 200 years ago. The modern aluminium production using a hydrometallurgical refining process for making alumina ... -
Slow surface diffusion on Cu substrates in Li metal batteries
(Peer reviewed; Journal article, 2021)Dendrite growth on the lithium metal anode still obstructs a widespread commercialization of high energy density lithium metal batteries. In this work, we investigate how the crystal structure of the copper foil current ... -
A Review of Ferroalloy Tapping Models
(Peer reviewed; Journal article, 2021)Tapping is an important furnace operation in the ferroalloy industry and poses a number of complex and coupled challenges of both practical and economical importance. Owing to the hazardous high-temperature conditions ... -
Production Rate of SiO Gas from Industrial Quartz and Silicon
(Peer reviewed; Journal article, 2021)The production rate of SiO gas from industrial quartz and silicon has been investigated by isothermal heat treatment experiments. Mixtures of silicon and different quartz samples have been heated to temperatures ranging ... -
The effect of Equal Channel Angular Pressing on the stress corrosion cracking susceptibility of AZ31 alloy in simulated body fluid
(Peer reviewed; Journal article, 2020)Despite the great potential of Mg and its alloys as material for biodegradable implants, their low resistance to the simultaneous action of corrosion and mechanical stresses in the human body have hampered their use. Stress ... -
Electrodeposition of aluminium containing alloys from molten fluoride electrolytes containing metal oxides
(Peer reviewed; Journal article, 2020)Aluminium is produced by the Hall-Heroult process by electrowinning in a molten fluoride electrolyte with dissolved alumina at ~955oC. Several metallic impurities typically end up in the produced metal due to the fact that ... -
Silicon purification by acid leaching and slag refining techniques
(Doctoral theses at NTNU;2021:117, Doctoral thesis, 2021)Solar energy has become the most popular and fastest-growing renewable energy resource worldwide. However, it still requires the current solar-grade silicon (SoG-Si, purity 99.9999%) production with a larger manufacturing ... -
Chemical Potential Differences in the Macroscopic Limit from Fluctuations in Small Systems
(Peer reviewed; Journal article, 2021)We present a new method for computing chemical potential differences of macroscopic systems by sampling fluctuations in small systems. The small system method, presented by Schnell et al. [Schnell et al., J. Phys. Chem. ... -
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 ...
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