Blar i Institutt for materialteknologi på tittel
Viser treff 560-579 av 2502
-
Distribution of Phosphorus between FeSi/Si and CaO-SiO2 Slags at 1600o C
(Master thesis, 2017)The aim of this thesis was to determine data for the phosphorus(P) distribution coefficients between ferrosilicon(FeSi) or silicon(Si) and calcia-silica(CaO SiO2) slags. The work was carried out due to inconsistencies ... -
Does power ultrasound (26 kHz) affect the hydrogen evolution reaction(HER) on Pt polycrystalline electrode in a mild acidic electrolyte?
(Peer reviewed; Journal article, 2020)In this study, we investigated the effects of power ultrasound (26 kHz, up to ∼75 W/cm2, up to 100% acoustic amplitude, ultrasonic horn) on the hydrogen evolution reaction (HER) on a platinum (Pt) polycrystalline disc ... -
Domain Engineering in Polycrystalline ErMnO3 Using Strain- and Electrical Fields
(Master thesis, 2022)Utforming av ferroelektriske domener er avgjørende for å bruke ferroelektriske materialer som elektroniske komponenter, eksempelvis kondensatorer, sensorer og transdusere. For tiden kan ferroelektriske domener kontrolleres ... -
Domain wall mobility and roughening in doped ferroelectric hexagonal manganites
(Peer reviewed; Journal article, 2020)The macroscopic performance of ferroelectric and piezoelectric devices depends strongly on domain wall dynamics. It is clear that structural defects, such as vacancies, interstitials, and dopants codetermine the dynamics, ... -
Domain-Pattern Transfer across an Artificial Magnetoelectric Interface
(Journal article; Peer reviewed, 2018)Magnetoelectric interfaces provide efficient pathways for manipulating the magnetic order with low-power-consuming electric fields. A prime example of this is the voltage-controlled domain-pattern transfer from a multiferroic ... -
Domain-wall engineering and topological defects in ferroelectric and ferroelastic materials
(Journal article, 2020)Ferroelectric and ferroelastic domain walls are 2D topological defects with thicknesses approaching the unit cell level. When this spatial confinement is combined with observations of emergent functional properties, such ... -
Domains and domain walls in ferroic materials
(Peer reviewed; Journal article, 2021)Ferroic materials exhibit long-range order with respect to their elastic, electric, or magnetic properties, giving rise to fascinating physics and functional properties that are used in, e.g., state-of-the-art sensor ... -
Domains and domain walls in multiferroics
(Journal article, 2020)Multiferroics are materials combining several ferroic orders, such as ferroelectricity, ferro- (or antiferro-) magnetism, ferroelasticity and ferrotoroidicity. They are of interest both from a fundamental perspective, as ... -
DSC analyses of static and dynamic precipitation of an Al-Mg-Si-Cu aluminum alloy
(Journal article; Peer reviewed, 2015)In the present investigation, both static and dynamic precipitations of an Al–Mg–Si–Cu aluminum alloy after solid-solution treatment (SST) were comparatively analyzed using differential scanning calorimetry (DSC). Dynamic ... -
Ductility investigation of extruded profiles in an AA6063 alloy
(Master thesis, 2020)I bilindustrien jobbes det konstant mot å finne lettere, sterkere og mer kostnadseffektive materialer til produksjon og prosessering av bildeler. Dette fører til et større krav om kunnskap til materialenes mekaniske ... -
Duplex Process to Produce Ferromanganese and Direct Reduced Iron by Natural Gas
(Peer reviewed; Journal article, 2021)The application of natural gas instead of solid carbon to produce ferromanganese is a way forward in sustainable development. Mass and energy balances for an integrated duplex process to produce ferromanganese and direct ... -
Dye-sensitized solar cells with zinc oxide electrodes - Improving the electrodeposition of ZnO and investigating the electrode lifetime.
(Master thesis, 2019)Fargestoff-solceller er et spennende område innen fornybar energi. Disse solcellene åpner nye anvendelsesområder sammenlignet med silisium-cellene som dominerer dagens marked. Fargestoff-solceller kan lages gjennomsiktige ... -
Dynamic behaviour of fuel cells
(Doktoravhandlinger ved NTNU, 1503-8181; 2006:94, Doctoral thesis, 2006)This thesis addresses the dynamic behaviour of proton exchange membrane fuel cells (PEMFCs) and alkaline fuel cells (AFCs). For successful implementation in automotive vehicles and other applications with rapidly varying ... -
Dynamic Current and Power Distributions in a Submerged Arc Furnace
(Journal article; Peer reviewed, 2019)Most submerged arc furnaces used for the production of ferroalloys run on three-phase alternating current. This affects the electrical operation of the furnace and thus it is of interest to study alternating current ... -
Dynamic Current Distribution in the Electrodes of Submerged Arc Furnace Using Scalar and Vector Potentials
(Journal article; Peer reviewed, 2018)This work presents computations of electric current distributions inside an industrial submerged arc furnace. A 3D model has been developed in ANSYS Fluent that solves Maxwell’s equations based on scalar and vector potentials ... -
Dynamic Electrochemical Impedance Spectroscopy for the Evaluation of Localised Corrosion on Aluminium Alloys
(Peer reviewed; Journal article, 2023)Dynamic electrochemical impedance spectroscopy (dEIS), an extension of conventional EIS, was used for rapid measurements of initiation of localised corrosion on 3005 aluminium alloys with different Mn (1.08–1.39 wt. %) and ... -
Dynamic electrochemical impedance spectroscopy, for electrocatalytic reactions
(Journal article; Peer reviewed, 2014)Dynamic electrochemical impedance spectroscopy with the ac signal applied while sweeping the potential is a powerful method to study reaction mechanisms of surface electrochemical reactions. The ability to reliably measure ... -
Dynamic electrochemical impedance study of methanol oxidation at Pt at elevated temperatures
(Journal article; Peer reviewed, 2019)The methanol oxidation reaction (MOR) is studied at temperatures up to 140 °C by a combination of cyclic voltammetry, chronoamperometry, and dynamic electrochemical impedance spectroscopy (dEIS). A mechanistic analysis of ... -
Dynamic Light Modulation in an Electrochromic Window consisting of Polyaniline, Tungsten Oxide and a Solid Polymer Electrolyte
(Journal article; Peer reviewed, 1993)The electrochemical and optical properties of an electrochromic window consisting of the two complementary electrochromic materials, polyaniline (PANI) and tungsten oxide (WO3), have been investigated. Both PANI and WO3 ... -
Dynamic Modelling of Heat and Mass Transfer in the Silicon Arc Furnace
(Master thesis, 2019)Grunstoffet silisium er av stor betydning for det moderne samfunn. Selv om silisium er det vanligtse grunnstoffet i jordskorpen etter oksygen, så finnes ikke silisium i sin elementære form i naturen. Silisium kan produseres ...