Blar i Institutt for materialteknologi på tittel
Viser treff 1552-1571 av 2523
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Nanoparticle additions promote outstanding fracture toughness and fatigue strength in a cast Al–Cu alloy
(Peer reviewed; Journal article, 2020)Fatigue resistance and fracture toughness are essential to the reliability of castings during service. Reducing microporosity in cast alloys is a crucial issue for improving their fatigue strength and fracture toughness. ... -
Nanopatterning and plasmonic properties of plasma sputtered gold on diatom frustules
(Journal article; Peer reviewed, 2013)Bio-silica nanostructures from diatoms (called frustules) featuring plasmonic gold nanoparticles (NPs) are elaborated using two methods based on plasma sputtering of gold. The first investigated method uses a thermal ... -
Nanoscale Chemical Analysis of Ferroic Materials and Phenomena
(Doctoral theses at NTNU;2023:397, Doctoral thesis, 2023)The discovery of new physical phenomena in materials is closely linked to the progress in characterization and is propelled by the ability to observe and study physical processes occurring at the atomic level. Newly ... -
Nanostructured cathode materials for Li-ion batteries
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:32, Doctoral thesis, 2013) -
Nanostructured diatom earth SiO2 negative electrodes with superior electrochemical performance for lithium ion batteries
(Peer reviewed; Journal article, 2020)Diatomaceous earth (DE) is a naturally occurring silica source constituted by fossilized remains of diatoms, a type of hard-shelled algae, which exhibits a complex hierarchically nanostructured porous silica network. In ... -
Nanostructured magnesium silicide Mg2Si and its electrochemical performance as an anode of a lithium ion battery
(Journal article, 2017)Nano-crystalline Mg2Si (Mg67Si33) and its Si-rich eutectic (Mg47Si53) composition were synthesized by hydrogen desorption-recombination process, casting and rapid solidification techniques. The synthesis of Mg2Si meets ... -
Nanostructured thin filmse - background, preparation and relation to the technological revolution of the 21st century
(Chapter, 2019)Thin film technology is a mature field encompassing a wide range of applications such as electronics, optical communications, and biosystems. The list of potential applications is practically endless with an impact in ... -
Natural Gas Anodes for Aluminium Electrolysis in Molten Fluorides
(Journal article; Peer reviewed, 2016)Industrial primary production of aluminium has been developed and improved over more than 100 years. The molten salt electrolysis process is still suffering from low energy efficiency and considerable emissions of greenhouse ... -
Natural Gas Anodes of Porous Graphite for Aluminium Electrolysis
(Doctoral theses at NTNU;2017:266, Doctoral thesis, 2017)Aluminium is the second metal produced in the world in terms of quantity. It is produced in a multistage process. First, aluminium ore is converted to pure aluminium oxide. The second stage is an electrolysis process. In ... -
A natural vector/matrix notation applied in an efficient and robust return-mapping algorithm for advanced yield functions
(Peer reviewed; Journal article, 2021)A fast and robust stress-integration algorithm is the key to full exploitation of advanced anisotropic yield functions in computational mechanics. Poor global convergence of a direct application of the Newton-Raphson scheme ... -
New Insights into Computational Fluid Dynamic Modeling of the Resistivity and Overpotential in Reverse Electrodialysis
(Journal article; Peer reviewed, 2018)The resulting electrical potential of a reverse electrodialysis is reduced both due to ohmic and non-ohmic resistances. The non-ohmic resistance is mainly controlled by concentration polarization which is a considerable ... -
New insights into orthophosphoric acid assisted rapid aqueous processing of NMC622 cathodes
(Peer reviewed; Journal article, 2023)The use of orthophosphoric acid to stabilize aqueous processing of high nickel NMC622 electrodes was assessed under rapid processing conditions, in which the active material powder was in suspension for less than 1 hour. ... -
New Insights into Silicon Purification by AlloyingLeaching Refining: A Comparative Study of MgSi, CaSi, and CaMgSi Systems
(Peer reviewed; Journal article, 2020)In the present work, a comparative study of the silicon alloying–leaching purification process was carried out on the recently developed Mg–Si system, the Ca–Si system, and the novel ternary Ca–Mg–Si system. Insights were ... -
New low temperature aluminium production process
(Master thesis, 2019)Aluminiumsproduksjon i dag er både dyrt og tidkrevende, med flere høyenergikrevende steg på veien. Bauxitt må først graves ut, for så å bli raffinert til Al2O3. For å redusere Al2O3 til ren aluminium kreves temperaturer ... -
New Materials for Mg-ion batteries - Mn3O4 as cathode
(Master thesis, 2016)Due to drawbacks with the lithium ion battery technology, magnesium ion batteries are being researched as an alternative replacement system. An optimal combination of component materials has however not been discovered ... -
New Methods to Determine PAH Emission Dynamics During Electrode Mass Processing
(Peer reviewed; Journal article, 2023)New measurement techniques aiming to achieve a better understanding of the PAH emissions dynamics during production of electrode paste briquettes were tested. Traditional sampling method requires several hours of sampling ... -
Ni-Co and Ni-Fe Catalysts for The Oxygen Evolution Reaction in Alkaline Water Electrolysis
(Master thesis, 2022)Nickel-based catalysts were chosen for alkaline electrolysis of water due to their higher corrosion resistance and activity in alkaline environments. Alkaline membrane water electrolysis tries to combine the low cost of ... -
Ni/NiO nanosheets for alkaline hydrogen evolution reaction: In situ electrochemical-Raman study
(Journal article; Peer reviewed, 2020)Nickel/Nickel oxide (Ni/NiO) nanosheets heterostructure is a cheap and active catalyst for hydrogen evolution reaction (HER) in alkaline electrolytes. However, the reason for this activity is still under debate. Herein ... -
Nickel based-catalysts for anion exchange membrane water electrolysis: Electrochemical measurements, Raman spectroscopy, and electrolyzer performance
(Doctoral theses at NTNU;2020:269, Doctoral thesis, 2020)Hydrogen is an energy carrier, feedstock, industrial process gas, and alternative transportation fuel. Low-temperature water electrolysis, the splitting of water into its constituent gases hydrogen and oxygen by the means ... -
NiCu mixed metal oxide catalyst for alkaline hydrogen evolution in anion exchange membrane water electrolysis
(Peer reviewed; Journal article, 2021)We report on the optimization of nickel-copper catalysts for superior performance as a cathode catalyst in anion exchange membrane (AEM) water electrolysis. The bifunctional system of NiCu mixed metal oxide (MMO) nanosheets ...