Blar i Institutt for materialteknologi på utgivelsesdato
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First principles study of epitaxial strain induced phenomena and chemical expansion in perovskite oxides
(Doctoral theses at NTNU;2018:285, Doctoral thesis, 2018)The many exotic properties found in complex oxides have great potential for device applications. Complex oxides within the perovskite structure are particularly attractive, as they display a large diversity of chemical ... -
Initiation and Propagation of Intergranular Corrosion on AA6005 Aluminium Alloy
(Doctoral theses at NTNU;2018:391, Doctoral thesis, 2018)The increasing use of 6xxx series aluminium alloys (AlMgSi) in automotive applications is due to its high strength to weight ratio (enabling substantially reduced fuel consumption and CO2 emissions than for heavier materials ... -
The Effect of Rapid Solidification on Ti-Zr Alloys for Application in Ni-MH Battery Anodes
(Master thesis, 2018)Metal hydrides find applications in the storage of hydrogen and also as anode materials for the nickel-metal hydride batteries(Ni-MH). The properties of these materials can be tuned by selecting appropriate elemental ... -
Charged domain walls in improper ferroelectric hexagonal manganites and gallates
(Journal article; Peer reviewed, 2018)Ferroelectric domain walls are attracting broad attention as atomic-scale switches, diodes and mobile wires for next-generation nanoelectronics. Charged domain walls in improper ferroelectrics are particularly interesting ... -
Growing gold nanostructures for shape-selective cellular uptake
(Journal article; Peer reviewed, 2018)With development in the synthesis of shape- and size-dependent gold (Au) nanostructures (NSs) and their applications in nanomedicine, one of the biggest challenges is to understand the interaction of these shapes with ... -
Effects of Water Cooling of Green Anodes on Anode Furnace Operation
(Journal article; Peer reviewed, 2018)Water can be present in significant amounts in green anodes due to cooling with water after the forming process. The chemical environment in the pit can potentially be affected by the presence of water and may cause ... -
Pretreatment with a β-cyclodextrin - corrosion inhibitor complex stops an initiated corrosion process on zinc
(Journal article; Peer reviewed, 2018)Metal pretreatment is typically the first step in a reliable corrosion protection system. This work explores the incorporation of complexes between the cyclic oligosaccharide β-cyclodextrin (β-CD) and the molecular organic ... -
Orthorhombic-tetragonal phase transition induced by Ta isovalent doping and its effect on fatigue characteristics of KNL-NSTx ceramics
(Journal article; Peer reviewed, 2018)The effect of Ta addition on the bipolar fatigue characteristics of lead-free KNL-NSTx ceramics (x = 0, 0.04, 0.07 and 0.11 mol%) is studied. Bipolar cycling up to 1 × 106 cycles leads to strong degradation of the polarization ... -
Corrosion Behaviour of Aluminium-Steel Welded Joints
(Master thesis, 2018)Multi-material solutions is a hot research topic in the automotive industry. The possibility to combine the physical and mechanical properties of different materials in a car component can both increase passenger safety, ... -
Study of a Graphite Sensor for Alumina Concentration Measurements in Cryolite Melts
(Master thesis, 2018)Alumina dissolution is one of the most crucial processes taking place in the Hall-Héroult process for the production of primary aluminium. One of the key issues for advanced aluminium electrolysis is therefore to understand ... -
Thermodynamic assessment of the Mo-S system and its application in thermal decomposition of MoS2
(Journal article, 2018)The Mo-S system is crucial to extractive metallurgy, tribology, and various possible applications in design and fabrication of novel two-dimensional (2D) materials. First-principles calculations were utilized to compute ... -
As, Sb, and Fe removal from industrial copper electrolyte by solvent displacement crystallization technique
(Journal article; Peer reviewed, 2018)The presence of impurities in the copper electrolyte increases the energy consumption of an electrorefining process and contaminates the deposited copper on cathode. The concentration of impurities increases over time ... -
Effect of mechanical depoling on piezoelectric properties of Na0.5Bi0.5TiO3 - xBaTiO3 in the morphotropic phase boundary region
(Journal article; Peer reviewed, 2018)The effect of mechanical stress on the direct piezoelectric properties of pre-poled (1 − x)(Na0.5Bi0.5)TiO3–xBaTiO3 (NBT–xBT) in the range 4% ≤ x ≤ 13% was studied in situ using a mechanical load frame. Prior to mechanical ... -
Thermal evolution of the crystal structure and phase transitions of KNbO3
(Journal article; Peer reviewed, 2018)The thermal evolution of the crystal structure and phase transitions of KNbO3 were investigated by high-temperature powder X-ray diffraction and Rietveld refinement of the diffraction data. Two phase transitions from ... -
Mechanism behind the Inhibiting Effect of CO2 on the Oxidation of Al−Mg Alloys
(Journal article; Peer reviewed, 2018)Al–Mg alloys are known to suffer from problematic oxidation during melting, refining, and casting. The use of a CO2/air cover gas is known to minimize this oxidation; however, a mechanistic understanding of the beneficial ... -
The Effect of LiFSI Salt Concentration and Electrolyte Additives on the Performance of Silicon Anodes for Lithium-Ion Batteries
(Master thesis, 2018)Lithium-ion batteries (LIBs) are currently the dominant battery technology. However, the increasing technological demands in areas like energy storage, transportation and consumer electronics, require significant upgrades ... -
In situ synthesis of hybrid inorganic-polymer nanocomposites
(Journal article; Peer reviewed, 2018)Hybrid inorganic–polymer nanocomposites can be employed in diverse applications due to the potential combination of desired properties from both the organic and inorganic components. The use of novel bottom–up in situ ... -
AMADEUS: Next generation materials and solid state devices for ultra high temperature energy storage and conversion
(Journal article; Peer reviewed, 2018)Starting in January 2017, AMADEUS (www.amadeus-project.eu) is the first project funded by the European Commission to research on a new generation of materials and solid state devices for ultra-high temperature energy storage ... -
The Influence of Sulfur Content on the Carbothermal Reduction of SiMn Slag
(Journal article; Peer reviewed, 2018)This article examines the influence of sulfur content on the carbothermal reduction of MnO and SiO2 in SiMn slag by carbon black. The sulfur content in the synthetic slag is varied from 0 to 1.0 wt pct. Reduction experiments ... -
Current Distribution in Bipolar Cell Systems for the Chlor-alkali Industry
(Master thesis, 2018)The chlor-alkali industry is one of Europe s largest chemical industries and produces chlorine gas, hydrogen gas and sodium hydroxide. One of the main production methods is to use membrane cells that are assembled into a ...