Browsing Institutt for materialteknologi by Title
Now showing items 338-357 of 2509
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Comparative kinetics study of different iron-containing pellets with hydrogen at isothermal conditions
(Peer reviewed; Journal article, 2023)Using hydrogen to produce iron is a promising way for the steel industry to achieve the goal of carbon neutrality. The reducibility of iron-bearing oxides by hydrogen significantly impacts the productivity and energy ... -
Comparative study of AC and DC solvers based on current and power distributions in a submerged arc furnace
(Peer reviewed; Journal article, 2020)This work discusses 3D models of current distribution in a three-phase submerged arc furnace that contains several components, such as electrodes, central arcs, craters, crater walls, and side arcs that connect electrodes ... -
Comparative Study of Conductive Carbons' Effect on Rate Performance of LiFePO4 Cathodes in Lithium Ion Batteries
(Bachelor thesis, 2023)Målet med denne studien var å undersøke og sammenligne ulike ledende karbons effekt på ytelsen til LiFePO4 (LFP)-katoder i litium-ionbatterier. Metoder for å produsere LFP-katoder, sette sammen LFP-knappceller og syklisk ... -
Comparative study of eutectic Al-Si alloys manufactured by WAAM and casting
(Peer reviewed; Journal article, 2020)Wire and arc additive manufacturing (WAAM) of metallic materials is expected to become part of the new industrial revolution. The possibilities for complex designs and superior mechanical properties can in many cases replace ... -
Comparative Study of Hydrogen Reduction of Bauxite Residue-Calcium Sintered and Self-Hardened Pellets Followed by Magnetic Separation for Iron Recovery
(Journal article; Peer reviewed, 2023)To minimize the carbon footprint in the industrial valourization of bauxite residue, hydrogen was used as a reducing agent. The current study experimentally investigated hydrogen reduction of bauxite residue-CaO sintered ... -
Comparative study of the effects of galvanic corrosion on the strength and the failure of aluminium and stainless steel bolted joints
(Peer reviewed; Journal article, 2023)This paper investigates the effects of bimetallic insert on corrosion, material degradation, loading capacity, stress distribution, strain distribution and failure of aluminium-stainless steel lap shear bolted assemblies. ... -
Comparing Anodic Bubble Behavior of Anodes from Anisotropic and Isotropic Cokes in Laboratory Scale Aluminum Electrolysis Cells
(Journal article; Peer reviewed, 2019)During production of aluminum in Hall-Héroult cells, carbon anodes electrochemically oxidize to form mainly CO2. The CO2 bubbles block the anode working surface during growth and coalescence, leading to cell voltage loss ... -
Comparing electrochemical perormance of transition metal silicate cathodes and chevrel phase Mo6S8 in the analogous rechargeable Mg-ion battery system
(Journal article; Peer reviewed, 2016)Polyanion based silicate materials, MgMSiO4 (M = Fe, Mn, Co), previously reported to be promising cathode materials for Mg-ion batteries, have been re-examined. Both the sol-gel and molten salt methods are employed to ... -
Comparing In Situ DIC Results from an Etched Surface with a Gold Speckled Surface
(Journal article; Peer reviewed, 2019)A ferrite-pearlite two-phase steel was investigated using in situ scanning electron microscope (SEM) tensile testing combined with digital image correlation (DIC). Two different speckled patterns were used and compared. ... -
Comparing intergranular corrosion in Al‐Mg‐Si‐Cu alloys with and without α‐Al(Fe,Mn,Cu)Si particles
(Peer reviewed; Journal article, 2020)In this study, a model alloy without Fe and Mn additions, is compared with a commercial AA6005 alloy to further understand how the α‐Al(Fe,Mn,Cu)Si particles affect intergranular corrosion (IGC) behaviour. Both alloys were ... -
Comparing LiFSI and LiPF6 electrolytes for Algae based Silica Anodes in Li-ion Batteries
(Master thesis, 2020)Energiteknologi har en stor innvirkning på samfunnet vårt, alt fra miljøutfordringer og økonomisk utvikling til forbruker elektronikk og transportsektoren påvirkes av energiteknologi. I fremtiden vil energiteknologier, ... -
Comparing the Performance of Different Silicon Powders for Use in Lithium-Ion Batteries
(Master thesis, 2018)The topic of this thesis is silicon anodes for lithium-ion batteries. The aim of this thesis is to compare three different types of silicon powders for use in lithium-ion batteries - a micron-sized powder (Silgrain e-Si ... -
Comparison Between Microstructure Parameters and Electrochemical Performance of Ni-CGO Anodes in SOFC Subjected to Redox-Cycling
(Master thesis, 2011)The aim of this thesis was to create an understanding between the electrochemical performance of a porous Ni-CGO anode used in SOFC, and its microstructural parameters when subjected to redox-cycling. The anode samples ... -
Comparison of C14- and C15-Predomiated AB2 Metal Hydride Alloys for Electrochemical Applications
(Journal article, 2017)Herein, we present a comparison of the electrochemical hydrogen-storage characteristics of two state-of-art Laves phase-based metal hydride alloys (Zr21.5Ti12.0V10.0Cr7.5Mn8.1Co8.0Ni32.2Sn0.3Al0.4 vs. Zr25.0Ti6.5V3.9Mn22 ... -
Comparison of cathodic delamination of poly(n-alkyl methacrylates) on iron
(Journal article; Peer reviewed, 2017)Cathodic delamination is measured on iron surfaces covered with different poly(n-alky methacrylates), where the alkyl is an n-CnH2n + 1 (n = 1, 4, 18) group. The polymers are prepared by free radical polymerization in ... -
Comparison of Cleaning Routines in Norwegian Swimming Pools
(Bachelor thesis, 2021)Forskrift for badeanlegg, bassengbad og badstu m.v. gir lite veiledning n˚ar det kommer til rengjøring av overflater. Det varme og fuktige miljøet i svømmehaller er ideelt for vekst av bakterier. I denne oppgaven ble det ... -
Comparison of Electromagnetic Fields and Grain Refiners on Microstructure Evaluation of Al and Al-Si Alloys
(Bachelor thesis, 2022)Mikrostruktur i aluminium kan påvirkes av størkningsrate, tilsats av kornfinere og røring ved bruk av magnetiske felt. Al 1370 og AlSi7 ble støpt med og uten tilsats av tre forskjellige titandiborid kornfinere og fire ... -
Comparison of iron and copper doped manganese cobalt spinel oxides as protective coatings for solid oxide fuel cell interconnects
(Journal article; Peer reviewed, 2017)MnCo2O4, MnCo1.7Cu0.3O4 and MnCo1.7Fe0.3O4 are investigated as coatings for corrosion protection of metallic interconnects in solid oxide fuel cell stacks. Electrophoretic deposition is used to deposit the coatings on ... -
Comparison of Students' Perceived Learning in Two Similar Lab Courses with Different Teaching Staffs
(Journal article, 2020)At the Norwegian University of Science and Technology (NTN), two subjects with similar chemistry laboratory exercises have different practices with respect to the use of permanent and temporary staffs. In an ever-increasing ... -
Comparison of Surface Tension Models for the Volume of Fluid Method
(Journal article; Peer reviewed, 2019)With the increasing use of Computational Fluid Dynamics to investigate multiphase flow scenarios, modelling surface tension effects has been a topic of active research. A well known associated problem is the generation of ...