Institutt for materialteknologi
Recent Submissions
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Application of 7N In as secondary cathode for the direct current-glow discharge mass spectrometry analysis of solid, fused high-purity quartz
(Peer reviewed; Journal article, 2021)Direct current glow discharge mass spectrometry with an indium-based secondary cathode technique is used to analyze solid, nonconducting, fused high-purity quartz regarding metallic impurities of relevance to the solar ... -
Evaluation of selected ionic liquids as electrolytes for silicon anodes in li-ion batteries
(Peer reviewed; Journal article, 2021)In this work, four selected ionic liquids (ILs), in combination with lithium bis(fluorosulfonyl)imide salt (LiFSI) were explored as electrolytes for anodes made from micron-sized metallurgical grade silicon. The ionic ... -
Recovery of Iron and Aluminum from Bauxite Residue by Carbothermic Reduction and Slag Leaching
(Peer reviewed; Journal article, 2021)The recovery of major components of bauxite residue by carbothermic reduction at 1550–1750 °C and subsequent slag leaching in a Na3CO3(aq) solution is studied. Iron recovers primarily to pig-iron and lime is added to tune ... -
Anode-free Lithium Metal Batteries with High-Concentration Ether Electrolytes
(Master thesis, 2021)Med en raskt voksende etterspørsel for batterier, trengs det nye batterier som kan lagre mer energi. Å erstatte dagens grafittanode med litiummetall er en potensiell løsning for å øke energitettheten til litium-ionbatterier. ... -
Aluminum alloys as reinforcement in concrete constructions: Opportunities and Challenges
(Master thesis, 2021)I tradisjonell sement dannes det hydroksid under sementherdingen som fører til et alkalisk porevann i betongen. Dette fører til at stålarmeringen passiveres, men over tid i et eksponert miljø, vil dette porevannet nøytraliseres ... -
Magnetic and Stimuli-Responsive Nanoparticles for Environmental and Biomedical Applications
(Doctoral theses at NTNU;2021:362, Doctoral thesis, 2021)For the past few decades, nanomaterials have been an integral part of research involving applications in various industries, ranging from pharmaceuticals, electronics, energy, chemical, food, aviation, etc, owing to their ... -
Fuming during processing of FeSi alloys
(Master thesis, 2021)Støving er ei stor utfordring for metallproduksjonsindustrien. Støv går inn i naturen som forurensing, og luftveiene til verksarbeidere, hvor de bidrar til luftveissykdommer og kreft. Derfor er det veldig viktig å kontrollere ... -
Towards high-throughput microstructure simulation in compositionally complex alloys via machine learning
(Peer reviewed; Journal article, 2021)The coupling of computational thermodynamics and kinetics has been the central research theme in Integrated Computational Material Engineering (ICME). Two major bottlenecks in implementing this coupling and performing ... -
Wetting of Carbon Cathodes by Molten Electrolyte and Aluminium
(Journal article; Peer reviewed, 2021)The extent to which the carbon cathode is wetted by molten electrolyte or molten aluminium metal is important for understanding the cathode wear during aluminium electrolysis. The present paper reports on a laboratory study ... -
Reaction Rate Analysis of Manganese Ore Prereduction in CO-CO2 Atmosphere
(Peer reviewed; Journal article, 2021)Variations in energy efficiency and climate gas emissions in production of manganese ferroalloys are largely related to the solid-state reduction of the manganese ores used as raw material in the production. The gas-solid ... -
The Utilization of Bauxite Residue with a Calcite-Rich Bauxite Ore in the Pedersen Process for Iron and Alumina Extraction
(Peer reviewed; Journal article, 2021)Metallurgical grade alumina is produced worldwide through the well-known Bayer process, which unavoidably generates bauxite residue (BR, also known as red mud) in almost equal amounts to alumina. This study aims the ... -
Method for Studying High Temperature Aqueous Electrochemical Systems: A Self-Pressurized Autoclave
(Journal article; Peer reviewed, 2016) -
Reduction Rates of SiMn Slags from Various Raw Materials
(Doctoral theses at NTNU;2018:260, Doctoral thesis, 2018)The kinetic information in the SiMn (Silicomanganese) process from melting of raw materials to production of metal was investigated in this work. This is of interest for the SiMn production industries where the effect of ... -
Interfacial Behaviour in Ferroalloys: The Influence of Sulfur in FeMn and SiMn Systems
(Peer reviewed; Journal article, 2021)The present study has investigated the influence of sulfur content in synthetic FeMn and SiMn from 0 to 1.00 wt pct on interfacial properties between these ferroalloys and slags. The effect of experimental parameters such ... -
Slag Properties in the Primary Production Process of Mn-Ferroalloys
(Peer reviewed; Journal article, 2021)The present study has investigated the influence of sulfur content in synthetic FeMn and SiMn from 0 to 1.00 wt pct on interfacial properties between these ferroalloys and slags. The effect of experimental parameters such ... -
Epoxy based coatings with graphene and graphene oxide additions for antifouling applications
(Master thesis, 2021)Prosessen der uønsket marin vekst akkumuleres på marine konstruksjoner kalles biologisk begroing. Forebygging av biologisk begroing er gunstig med hensyn til økonomiske aspekter, miljø, kostnader og vedlikehold for flere ... -
Microwave-assisted in situ laser dye incorporation into high sensitivity whispering gallery mode microresonators
(Peer reviewed; Journal article, 2022)Optical whispering gallery mode microresonators (WGM-µRs) are powerful sensitive components with many analytical applications. Here, spherical WGM-µRs have been synthesised in a single-step microwave (MW)-assisted heterophase ... -
Possibilities of Improving the Structural Properties of Welded Al-Mg-Si Alloys Through Automated Local Induction Heat Treatments
(Master thesis, 2021)Det er et kjent fenomen at materialet i den varmepåvirkede sonen (HAZ) hos Al-Mg-Si-legeringer blir svekket etter sveising. Østhus et al. har designet et dataprogram som simulerer strekkprøving av sveiste Al-Mg-Si ... -
Stoichiometry-Controlled Reversible Lithiation Capacity in Nanostructured Silicon Nitrides Enabled by in Situ Conversion Reaction
(Peer reviewed; Journal article, 2021)In modern Li-based batteries, alloying anode materials have the potential to drastically improve the volumetric and specific energy storage capacity. For the past decade silicon has been viewed as a “Holy Grail” among these ... -
Product formation during discharge: a combined modelling and experimental study for Li–O2 cathodes in LiTFSI/DMSO and LiTFSI/TEGDME electrolytes
(Peer reviewed; Journal article, 2021)Li–air or Li–O2 batteries are a promising energy storage technology due to the potentially high energy density. However, significant challenges related to reversible charge/discharge of these cells need to be solved. The ...
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