Browsing Institutt for materialteknologi by Title
Now showing items 954-973 of 2496
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Freeze casting of piezoelectric BCZT for biomedical applications
(Master thesis, 2019)Bruken av piezoelektriske keramer som beinimplantat gir muligheten til å forsterke heling av skadet bein gjennom elektrisk stimulering in vivo. På denne måten kan rekonvalesenstiden og sannsynligheten for revisjonsutskiftninger ... -
Freeze-drying of NMC cathodes for Li-ion batteries
(Master thesis, 2023)I denne masteroppgaven ble frysetørking evaluert som en potensiell tørkemetode i produks- jon av NMC622 katoder. Det ble produsert testkatoder via frysetørking og referanseelektroder via vakuum-ovn tørking. Katodene ble ... -
Freezing solute atoms in nanograined aluminum alloys via high-density vacancies
(Peer reviewed; Journal article, 2022)Low-temperature decomposition of supersaturated solid solution into unfavorable intergranular precipitates is a long-standing bottleneck limiting the practical applications of nanograined aluminum alloys that are prepared ... -
Frequency controlled agglomeration of pt-nanoparticles in sonochemical synthesis
(Peer reviewed; Journal article, 2022)Optimizing the surface area of nanoparticles is key to achieving high catalytic activities for electrochemical energy conversion devices. In this work, the frequency range (200 kHz–500 kHz) for maximum sonochemical radical ... -
Frequency dependent polarisation switching in h-ErMnO3
(Journal article; Peer reviewed, 2018)We report an electric-field poling study of the geometric-driven improper ferroelectric h-ErMnO3. From a detailed dielectric analysis we deduce the temperature and frequency dependent range for which single-crystalline ... -
From Calves' Sculls to finished Bone-Ash Cupels and testing of Precious Meetals. An Investigation of the cupellation in the Mint in the Archbishop's Palace, Trondheim, in medieval times
(Peer reviewed; Journal article, 2021)The paper discusses three topics: (1) the production process of bone-ash cupels from bones in calves’ sculls to finished cupels, (2) cupellation of a silver and a gold alloy with known compositions in replica cupels and ... -
Fume Formation and Measurements in the Metal-Production Industry
(Doctoral theses at NTNU;2022:14, Doctoral thesis, 2021)Airborne Particulate Matter (PM) is considered to be a major concern for both occupational health and the environment, and in the metal production industry, the level of such particles in the air can be considerable. This ... -
Fume Formation from Oxidation of Liquid SiMn Alloy
(Journal article; Peer reviewed, 2017)Thermally generated fumes from the production of manganese ferroalloys are mostly composed of metallic oxides generated due to reaction between high-temperature molten metal and ambient oxygen in the air. In the current ... -
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 ... -
Functional electronic inversion layers at ferroelectric domain walls
(Journal article; Peer reviewed, 2017)Ferroelectric domain walls hold great promise as functional two-dimensional materials because of their unusual electronic properties. Particularly intriguing are the so-called charged walls where a polarity mismatch causes ... -
Functionalized TiO2 nanoparticles by single-step hydrothermal synthesis: the role of the silane coupling agents
(Journal article; Peer reviewed, 2017)A simple, robust and versatile hydrothermal synthesis route to in situ functionalized TiO2 nanoparticles was developed using titanium(IV) isopropoxide as Ti-precursor and selected silane coupling agents (3-aminopropyltri ... -
Fundamental Aspects of Thermodynamics of Small Systems Investigated Through Molecular Simulations and Theoretical Descriptions
(Doctoral theses at NTNU;2022:280, Doctoral thesis, 2022)Systems on the nanoscale can show behaviour that is strikingly different from the behaviour we expect for systems on themacroscopic scale. As a consequence, we can in general not assume that macroscopic theories of matter ... -
Furnace Atmosphere and Dissolved Hydrogen in Aluminium
(Peer reviewed; Journal article, 2019)Hydrogen solubility is much higher in liquid than in solid aluminium. Therefore, if the hydrogen concentration in liquid aluminium is too high prior to solidification, there is high risk of gas porosity formation during ... -
Gamma-isotoper i industriell radiografi
(Bachelor thesis, 2019)Problemstillingen i denne rapporten var å vurdere muligheten for å avvikle gamma-isotoper i indusriell radiografi. Store deler av arbeidet bestod av å utføre intervjuer med ulike bedrifter i bransjen. Det ble også utført ... -
Gas Anodes Made of Porous Graphite for Aluminium Electrowinning
(Journal article, 2017)One of the major downsides of the current aluminium production process is the high CO2 emission. One alternative is to replace the consumable carbon anodes with inert anodes so that oxygen evolves instead of CO2. Also PFC ... -
Gas electrodes with nickel based current collectors for molten carbonate electrolyte thermo-electrochemical cells
(Journal article; Peer reviewed, 2019)Thermo-electrochemical cells with inexpensive molten carbonate electrolyte and (CO2|O2) gas electrodes allow the possible conversion of high temperature waste heat from industrial processes into electricity. The cell ... -
Gas Flow and Pressure Drop in Charge Material in Silicon Production
(Peer reviewed; Journal article, 2022)Gassing, outbursts of high-rate gas flows through the taphole, is a phenomenon that sometimes occurs during tapping of silicon furnaces. In addition to being an HSE challenge, this might also affect the tapping, while the ... -
Gas Flow in Charges for Mn-Ferroalloy Production
(Master thesis, 2023)Et sentralt mål for ferromanganindustrien er å redusere energiforbruk og utslipp av klimagasser knyttet til produksjonen. For å bidra til å løse disse utfordringene ble PreMa-prosjektet initiert. PreMa-prosjektets mål er ... -
Gas-Atomized Nickel Silicide Powders Alloyed with Molybdenum, Cobalt, Titanium, Boron, and Vanadium for Additive Manufacturing
(Peer reviewed; Journal article, 2023)Nickel silicides (NiSi) are renowned for their ability to withstand high temperatures and resist oxidation and corrosion in challenging environments. As a result, these alloys have garnered interest for potential applications ... -
Gaseous reduction of Mn ores in CO-CO2 atmosphere
(Chapter, 2018)The efficiency in production of manganese ferroalloys is dependent on the gaseous reduction of the higher manganese oxides in the ores used as raw materials. The materials, descending in the furnace, will meet the furnace ...