Institutt for materialteknologi: Recent submissions
Now showing items 1-20 of 2618
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X-ray Structure of Eleven New N,N′-Substituted Guanidines: Effect of Substituents on Tautomer Structure in the Solid State
(Journal article; Peer reviewed, 2024)Guanidine-containing molecules are an interesting class of compounds within both medicinal and material sciences. Having knowledge of their tautomerism is key in designing guanidines that interact with biological and ... -
Fe/Zr binary MOF-based separator for highly efficient polysulfide adsorption and conversion in Li-S batteries
(Journal article; Peer reviewed, 2024)Lithium-sulfur (Li-S) batteries are known as a next-generation energy storage technology due to their high theoretical energy density and low cost. However, the shuttling of soluble lithium polysulfides (LPS) between ... -
Characterization of Petroleum Cokes for Use in Li-ion Batteries
(Master thesis, 2024)De siste årene har etterspørselen etter grafitt, som er en viktig komponent i litiumionbatterier (LIB), økt betydelig på grunn av den økende populariteten til elbiler. Naturlig grafitt utvinnes fra gruver, mens syntetisk ... -
Extrinsically controlled electronic behavior at improper ferroelectric domain walls
(Doctoral theses at NTNU;2024:447, Doctoral thesis, 2024)Ferroelectric domain walls are natural interfaces, separating volumes with uniform polarization orientation. The walls have a width of a few Ångstrøm and they can develop completely different electronic properties than the ... -
Pilot-Scale Aluminothermic Production of Silicon Alloy and Alumina-Rich Slag
(Journal article; Peer reviewed, 2024)As global demand for silicon (Si) and alumina continues to surge, the significance of developing more sustainable production methods has intensified. The SisAl process represents a path-breaking approach to producing Si ... -
Accelerating precipitation hardening by natural aging in a 6082 Al-Mg-Si alloy
(Journal article; Peer reviewed, 2024)It is well known that long time natural aging (NA) after quenching from solution treatment will significantly reduce the precipitation hardening kinetics and peak hardness of most 6xxx aluminum alloys during later artificial ... -
Review of Metal Screw Extrusion: State of the Art and Beyond
(Journal article; Peer reviewed, 2024)Metal screw extrusion (MSE) is a continuous, solid-state forming method utilizing an inherently high degree of deformation to consolidate fragmented input materials into a solid bulk by breaking their oxide skins. Severe ... -
Effect of initial grain size on the recrystallization behavior and recrystallization texture of a Mg–3Gd alloy
(Peer reviewed; Journal article, 2024) -
Insights on the Prelithiation of Diatom SiO₂ anodes for Lithium-ion Batteries
(Master thesis, 2024)Nanostrukturer av SiO_2, hentet fra skallene til diatomé-mikroalger fremstår som en kandidat for høy energitetthet og bærekraftige anoder for neste generasjons litium-ion-batterier (LIBs), og oppnår kapasiteter på rundt ... -
Investigation about the Effects of Conventional and Screw Extrusion on the Properties of AA1370 Aluminium Process Scrap and End-of-Life Scrap Material
(Master thesis, 2024)Denne studien omfattet produksjon av ekstruderte profiler ved hjelp av både konvensjonell ekstrudering og den nye skrueteknikken for ekstrudering, med granulerte kabler fra AA1370 aluminiumlegering. Etter ekstruderingen ... -
Additive Manufacturing of 7xxx Aluminium Alloys by Laser Powder Bed Fusion
(Peer reviewed; Journal article, 2024) -
Ash Behaviour and Metal Extraction from MSWI Fly Ash in Alkaline Conditions.
(Master thesis, 2024)For tiden deponeres flere tonn av flyveaske fra kommunal avfallsforbrenning (MSWI), til tross for den høye etterspørselen etter flyveaske i betonganvendelser. For å unngå deponering av dette potensielle byggematerialet ... -
Electrochemical Reduction and Oxidation of Zinc in Chloride Melts for Use in the All-Liquid Na-Zn Battery
(Master thesis, 2024)Verden er i økende grad avhengig av uregulerbar kraftproduksjon fra vind og sol, og effektive energilagringsløsninger må utvikles for å balansere kraften på strømnettet. Denne studien er en del av SOLSTICE-prosjektet, som ... -
Prereduction of Nchwaning and Comilog ore with H2-containing gases
(Master thesis, 2024)Industrial production of manganese alloys occurs in a submerged arc furnace, requiring electrical energy and metallurgical coke. The pre-reduction takes place in the top part of the furnace. In this process, the endothermic ... -
The Effect of a Laser-Based Heat Treatment on the Microstructural Evolution of a Repaired by Direct Energy Deposition IN718 Superalloy
(Master thesis, 2024)I dette prosjektet ble det undersøkt prøver av superlegeringa Inconel 718 framstilt via LB-DED, og deretter utsatt for en laserbasert varmebehandling. To slike varmebehandlinger ble utført og karakterisert: den første ... -
Effect of Cu and Zn in trace amounts on the microstructure and properties of extruded 6xxx-aluminium alloys
(Master thesis, 2024)Ekstruderte aluminiumsprofiler er mye brukt i flere sektorer av industri til et stort antall bruksområder. Den høye bruken av aluminiumlegeringer kombinert med endringer i dagens industri mot økt bærekraftighet fører til ... -
Optimizing the carbon additive in LiNi0.5Mn1.5O4 batteries
(Master thesis, 2024)I denne oppgaven ble et alternativ til carbon black som karbonadditiv studert, i tillegg til å evaluere mengden karbonledende innhold i et LiNi0.5Mn1.5O4 (LNMO) batterisystem. Tre forskjellige karbontilsetninger, Carbon ... -
Selective Lithium Extraction with Ion Exchange Resins from Black Mass Leachate
(Master thesis, 2024)Den økende etterspørselen etter litium, drevet av utvidelsen av elektriske kjøretøy, krever bærekraftige resirkuleringsmetoder for å gjenvinne litium fra utrangerte litium-ion batterier (LIBs). Denne avhandlingen undersøker ... -
Comparative Study of High Voltage Spinel∥Lithium Titanate Lithium-ion Batteries in Ethylene Carbonate Free Electrolytes
(Journal article; Peer reviewed, 2024)A persistent obstacle towards the realization of high voltage cathodes is electrolyte instability where oxidation and transition metal dissolution manifest in rapid capacity failure with both issues connected to the presence ... -
Investigation of uniformity in fused quartz crucibles for Czochralski silicon ingots
(Journal article; Peer reviewed, 2024)As there is an increased demand for monocrystalline silicon based solar cells, there is an increased interest in stronger and more durable fused quartz crucibles used in the Czochralski process. In this study we focused ...