Blar i Institutt for materialteknologi på tittel
Viser treff 1428-1447 av 2502
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Micro-fluidic flow cells for studies of electrochemical reactions
(Master thesis, 2014)Micro fluidic flow cells (MFFCs) are a relatively new technique for characterization of electrochemical reactions. This work includes both techniques for manufacturing the cells and electrochemical characterization of ... -
Microbial Growth on Indoor Artificial Turf and Assessment of Suitable Disinfection Methods
(Bachelor thesis, 2021)Bakterievekst i kunstgress er et problem, spesielt på grunn av at nyere generasjoner av kunstgress (4G) inneholder organisk fyll istedenfor gummigranulat. Det organiske fyllet er mer miljøvennlig, men inneholder ikke ... -
Microbiological Assessment of Disinfection on Indoor Artificial Turf
(Bachelor thesis, 2023)I arbeidet med å bytte ut organisk fyllmateriale til organisk fyllmateriale i kunstgress grunnet dets miljøfare, oppstår det en ny utfordring, muligheten for økt bakterievekst. Dette kan føre til vekst av indikatororganismer ... -
Microfluidic and high temperaturetechniques for aqueous electrochemistry
(Doctoral thesis at NTNU;2016:196, Doctoral thesis, 2016)Liquid organic fuels are highly desired energy carriers as they have a high energy density, simple production, and can benefit directly from existing infrastructure. However, the electrochemical conversion efficiency is ... -
Microfluidic flow cells for studies of electrochemical reactions
(Master thesis, 2012)In this project the main goal was to establish a routine for making a microfluidic flow cell (MFFC) using soft lithography methods, and test the flow cell with different electrolytes, sulphuric acid and a ruthenium red-ox ... -
Microfluidic flow cells for the analysis of electrocatalytic reactions
(Doctoral theses at NTNU;2017:331, Doctoral thesis, 2017)English summary Microfluidic flow cells for the analysis of electrocatalytic reactions The electro-oxidation of small organic molecules such as methanol could play an important role in the transition from fossil fuels ... -
Microscopic Link between Electron Localization and Chemical Expansion in AMnO3 and ATiO3 Perovskites (A = Ca, Sr, Ba)
(Peer reviewed; Journal article, 2020)The microscopic origin of chemical expansion in perovskite oxides, due to formation of oxygen vacancies accompanied by formal reduction of a 3d transition metal, is studied by first-principles calculations. We compare the ... -
Microscopic Study of Carbon Surfaces Interacting with High Carbon Ferromanganese Slag
(Journal article; Peer reviewed, 2015)The interaction of carbon materials with molten slags occurs in many pyro-metallurgical processes. In the production of high carbon ferromanganese in submerged arc furnace, the carbothermic reduction of MnO-containing ... -
Microstructural Analysis of Effective Electrode Conductivity in Molten Salt, Na-ZnCl2 Batteries
(Peer reviewed; Journal article, 2022)Intermediate temperature molten salt batteries are a promising alternative for grid-scale energy storage with several advantages over existing solutions. The cathode of some of these batteries is composed of a porous matrix ... -
Microstructural and compositional optimization of La0.5Ba0.5CoO3−δ—BaZr1−zYzO3−δ (z=0, 0.05 and 0.1) nanocomposite cathodes for protonic ceramic fuel cells
(Journal article; Peer reviewed, 2019)Cathodes are one of the key components of protonic ceramic fuel cells (PCFCs) requiring further development to enhance the performance of PCFCs. This encompasses the optimization of material compositions and microstructures, ... -
Microstructural design of CaMnO3 and its thermoelectric proprieties.
(Master thesis, 2015)Calcium manganate (CMO) is an n-type semiconductor with promising thermoelectric proprieties. Solid state synthesis was employed to synthesise the desired material in two phases: i) reduced rock-salt phase of CaO-MnO (ss) ... -
Microstructural evolution during isothermal annealing of a cold-rolled Al-Mn-Fe-Si alloy with different microchemistry states
(Journal article, 2014)In this paper, investigations of the softening behaviour of a supersaturated Al-Mn-Fe-Si alloy during annealing after cold rolling have been carried out. Two different homogenization conditions were considered, of which ... -
Microstructural evolution during isothermal heat treatment of super duplex stainless steels as a function of tungsten content
(Master thesis, 2017)Duplex stainless steels(DSS) and super duplex stainless steels(SDSS) can be described as austenitic-ferritic stainless steels of 22%Cr and 25%Cr content, respectively. The DSS and SDSS are characterised by their combination ... -
Microstructural evolution of 3000 series multi-port extruded tubes during brazing cycles
(Master thesis, 2017)The AA3xxx series alloys are known for the good corrosion resistance and widely used as heat exchanging material. However, 3xxx series alloys shows intergranular corrosion problem after brazing. In this project, a systematic ... -
Microstructural heterogeneity in hexagonal close-packed pure Ti processed by high-pressure torsion
(Journal article; Peer reviewed, 2012)Microstructural evolution was studied quantitatively by electron backscattering diffraction in commercial purity Ti processed by high-pressure torsion (HPT) at room temperature. The results show that a heterogeneous ... -
The microstructural origin of a hardness double-peak in an age-hardened EN-AW 6082
(Peer reviewed; Journal article, 2023)In this study, the origin of a double-peak during artificial aging of an EN-AW 6082 is analyzed with (S)TEM. The acquired TEM data is used as an input into a strength model by Holmedal [1] to explore the origin of the ... -
Microstructural Stability of Tailored CaMn0.875−xFexTi0.125O3−δ Perovskite Oxygen Carrier Materials for Chemical Looping Combustion
(Journal article; Peer reviewed, 2017)CaMn1−xTixO3−δ are state-of-the-art perovskite-type oxygen-carrier materials (OCMs) used in gaseous fluidized-bed chemical looping combustion (CLC), which is currently undergoing upscaling and demo campaigns in several ... -
Microstructure and electrical properties of multi- crystalline silicon ingots made in silicon nitride crucibles
(Peer reviewed; Journal article, 2022)Silicon nitride is a more sustainable crucible material than silica, due to the larger potential for re-use. In this work, two directionally solidified high-performance multi-crystalline silicon (HPMC-Si) ingots have been ... -
Microstructure and enhanced mechanical properties of an Mg-10Gd-2Y-0.5Zr alloy processed by cyclic extrusion and compression
(Journal article; Peer reviewed, 2011)The evolution of microstructure and texture of an extruded GW102K Mg alloy processed by cyclic extrusion and compression (CEC) at 450 °C were investigated. Tensile tests were performed at room temperature and strain rate ... -
Microstructure and Mechanical Properties of 6013 Aluminum Alloy Processed by a Combination of ECAP and Preaging Treatment
(Journal article; Peer reviewed, 2017)Microstructure and mechanical properties of a 6013 Al-Mg-Si-Cu aluminum alloy processed by a combination of equal channel angular pressing (ECAP) and preaging treatment were comparatively investigated using quantitative ...