Browsing Institutt for materialteknologi by Title
Now showing items 21-40 of 2559
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A method for comparing the HF formation potential of aluminas with different water contents
(Chapter, 2012)In the aluminium industry today, smelters often have to rely on more than one alumina supplier. This creates diversity in the properties of smelter grade alumina (SGA). A method has been developed to compare the HF formation ... -
A Method for Controlled Oxide and Carbon Coating of Silicon Nanoparticles as Anode in Lithium-Ion Batteries
(Master thesis, 2017)Silicon has emerged as a promising alternative to graphite in lithium-ion batteries. Silicon can, theoretically, provide up to ten times higher capacity due to its high alloying capabilities with lithium. This improvement ... -
A method for describing systems of spherical droplets in vapor
(Master thesis, 2021)Det har lenge vært kjent at nanomaterialer har unike egenskaper som ikke observeres i materialer på større skala. Den unike oppførselen gjør også at nanosystemer ikke kan beskrives av de vanlige termodynamiske likningene, ... -
A methodology to assess the spatial distribution of dispersoids in AL-MG-Si alloys
(Chapter, 2018)Al-Mg-Si alloys often add small additions of e.g. Mn or Cr, to form dispersoids, which may act as nucleation sites for Mg2Si particles after homogenization. The purpose is to ensure a high density of uniformly distributed ... -
A methodology to assess the spatial distribution of dispersoids in Al-Mg-Si alloys
(Chapter, 2018)Al-Mg-Si alloys often add small additions of e.g. Mn or Cr, to form dispersoids, which may act as nucleation sites for Mg2Si particles after homogenization. The purpose is to ensure a high density of uniformly distributed ... -
A microfluidic electrochemical cell with integrated PdH reference electrode for high current experiments
(Journal article; Peer reviewed, 2016)An on-chip thin-film palladium hydride reference electrode is described for use with microfluidic electrochemical cells. A Pd electrode fabricated by photolithographic methods is charged with hydrogen in-situ with a simple ... -
A Model Based Parametric Study of Alumina Feeding and Dissolution
(Bachelor thesis, 2020)Alumina blir brukt som råmateriale i den energikrevende Hall-Hèroult-prosessen for produksjon av aluminium. I denne prosessen blir aluminapulver matet til et kryolittbad med jevne mellomrom. Det utfordrende miljøet i den ... -
A multiscale numerical approach of the dripping slag in the coke bed zone of a pilot scale Si-Mn furnace
(Chapter, 2017)The Si-Mn alloy process production in submerged arc furnaces (SAF) is investigated. The aim of the studies currently in progress is an enhancement of the knowledge about the key reactions and the mass transport phenomenon ... -
A new material for oxygen-permeable membranes
(Master thesis, 2017)In this study, hexagonal YMnO3 doped with 15% Ti was used in the preparation of an asymmetric oxygen permeable membrane. Several different methods for the fabrication of the asymmetric membrane have been used, and the ... -
A New Nano Insulation Material for Applications in Zero Emission Buildings
(Master thesis, 2013)New materials with extremely low thermal conductivities are interesting because they can have architectonic, technical and possibly economic benefits in buildings. A new nano insulation material (NIM) is under development ... -
A Photomagnetic Sponge: High-Temperature Light-Induced Ferrimagnet Controlled by Water Sorption
(Journal article; Peer reviewed, 2018)“Converting” light energy to magnetization is the attribute of molecule-based compounds called photomagnets and is inaccessible for conventional magnetic solids. The design and synthesis of such compounds, however, is a ... -
A physically-based constitutive model applied to AA6082 aluminium alloy at large strains, high strain rates and elevated temperatures
(Journal article; Peer reviewed, 2016)This paper presents a physically-based constitutive model applied to an AA6082 aluminium alloy subjected to large strains, high strain rates and elevated temperatures. The model accounts for thermo-elasticity, thermo-vis ... -
A process model for friction stir welding of age hardening aluminium alloys
(Dr. ingeniøravhandling, 0809-103X; 1999:76, Doctoral thesis, 1999) -
A semianalytical method for simulating mass transport at channel electrodes
(Journal article; Peer reviewed, 2015)A method for simulating electrode reactions in channel flow is developed and efficiently implemented in the symbolic algebra program Maple™. The steady-state convective diffusion equation for fully developed 2-D laminar ... -
A simplified three-phase model of equiaxed solidification for the prediction of microstructure and macrosegregation in castings
(Journal article, 2018)Macrosegregation is a result of the interplay of various transport mechanisms, including natural convection, solidification shrinkage, and grain motion. Experimental observations also indicate the impact of grain morphology, ... -
A Solute Pinning Approach to Solute Drag in Multi-Component Solid Solution Alloys
(Journal article; Peer reviewed, 2014)The Cahn, Lücke and Stüwe theory remains the backbone of more complex analysis dealing with solute drag, however, the mathematical treatment is rather involved. A new approach based on solute pinning the boundary has ... -
A Stability Study of Substoichiometric Silicon Nitride Nanoparticles as Active Anode Material for Li-ion Batteries
(Master thesis, 2019)De fremragende elektrokjemiske egenskapene til understøkiometrisk silisium nitrid (SiNx) har gjort dette material til en potensiell kandidat for neste generasjons Li-ion batteri aktive anode materiale. Den først litsieringen ... -
A study of anode baking gas composition
(Journal article; Peer reviewed, 2018)A method has been developed to measure gas composition inside the pit in open anode baking furnaces. The gas composition can be used to understand attack on and degradation of the refractory lining, baking behavior and ... -
A Study of Localized Corrosion in Supermartensitic Stainless Steel Weldments
(Dr.ingeniøravhandling, 0809-103X; 2002:72, Doctoral thesis, 2002)This doctoral thesis is concerned with pitting corrosion in super martensitic stainless steel (SMSS) weldments in slightly sour service. Thee main objective with the present thesis has been to find out why pitting corrosion ... -
A study on commercial SiC-powders sintered by hot pressing
(Master thesis, 2016)Hot-pressing of a commercial silicon carbide powder was performed with 0, 5 and 10wt% added hexagonal boron nitride. Density, microstructural and compositional development has been studied ex situ with different holding ...