Blar i Institutt for materialteknologi på utgivelsesdato
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Interstitial oxygen as a source of p-type conductivity in hexagonal manganites
(Journal article; Peer reviewed, 2016)Hexagonal manganites, h-RMnO3 (R=Sc, Y, Ho–Lu), have been intensively studied for their multiferroic properties, magnetoelectric coupling, topological defects and electrically conducting domain walls. Although point defects ... -
Electromagnetically Enhanced Priming of Ceramic Foam Filters
(Doctoral thesis at NTNU;2016:250, Doctoral thesis, 2016)Impurities in aluminium can cause detrimental physical and chemical inhomogeneity in the final products, as well as potentially catastrophic failures. Hence, one of the key aspects during production of aluminium and its ... -
Konvertering av silica nanostrukturer med metallothermisk reduksjon.
(Master thesis, 2016)Produksjon av fornybar energi ved bruk av silisiumbaserte solceller er en viktig del av vår innsats for å redusere utslippet av klimagasser og få bukt med en av vår tids største utfordringer; global oppvarming. For å gjøre ... -
A Thermodynamic Assessment of the Chemical Durability of Refractory Lining in Anode Baking Furnaces
(Journal article, 2016) -
Method for Studying High Temperature Aqueous Electrochemical Systems: A Self-Pressurized Autoclave
(Journal article; Peer reviewed, 2016) -
Structure Control of Multicrystalline Silicon
(Doctoral thesis at NTNU;2016:65, Doctoral thesis, 2016)This work targets multiple approaches for controlling the initial growth conditions of directional solidification, and their effect on the final material microstructure and performance. Challenges related to both seeded ... -
Assessment of the Thermodynamic Stability of Thermal Insulating Materials in Aluminium Electrolysis Cells
(Journal article, 2016)The cathode bottom lining in aluminium electrolysis cells serves as a thermal insulating barrier and is important for the overall thermal and dimensional stability of the cell. The thermal insulation layer ... -
Role of Pitting in the Formation of Potholes in Carbon Cathodes - A Review
(Journal article, 2016) -
Effect of CO2 Exposure on the Chemical Stability and Mechanical Properties of BaZrO3‐Ceramics
(Journal article, 2016) -
The Effect of Deformation on Intergranular Corrosion of AlMgSi Alloys
(Master thesis, 2017)The heat treatable AlMgSi alloys are regarded as medium strength materials with excellent corrosion properties. To achieve enhanced mechanical properties with the aim to expand the application areas, Cu may be added since ... -
The deformation and work hardening behaviour of a SPD processed Al-5Cu alloy
(Journal article; Peer reviewed, 2017)An Al-5wt.%Cu alloy supersaturated with Cu in solid solution was subjected to equal channel angular pressing (ECAP). The microstructuralevolution was systematically investigated by backscattered electron (BSE)imaging, ... -
Electrochemical behaviour of dissolved titanium oxides during aluminium deposition from molten fluoride electrolytes
(Journal article, 2017)A small but significant amount of dissolved titanium is always present in the molten cryolite based electrolyte used during electrowinning of aluminium. The fact that titanium can appear in several oxidation states may be ... -
All oxide thermoelectric device based on Ca0.931Mn0.98Ta0.02O3-δ-Ca3Co4O9 pn-junction
(Master thesis, 2017)Metal oxides are promising thermoelectric (TE) material candidates for TE modules operational in a range of 300-1200 K in air. In this work a TE oxide module was fabricated by co-sintering the p-type material Ca3Co4O9 ... -
High strength and ductile high solid solution Al-Mg alloy processed by a novel hard-plate rolling route
(Journal article, 2017)Achieving bimodal grain structure via cold rolling remains a challenge for Al–Mg alloys. In the present work, a high tensile strength (∼525 MPa) and ductile (∼14%) Al–9Mg alloy was fabricated by a novel hard-plate rolling ... -
Strain-phonon coupling in (111)-oriented perovskite oxides
(Journal article; Peer reviewed, 2017)Strain-phonon coupling, in terms of the shift in phonon frequencies under biaxial strain, is studied by density functional theory calculations for 20 perovskite oxides strained in their (111) and (001) planes. While the ... -
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 ... -
Effect of Magnesium Addition on Removal of Impurities from Silicon by Hydrometallurgical Treatment
(Chapter, 2017)Hydrometallurgical treatment of silicon is an effective process for the removal of metallic impurities for producing solar grade silicon feedstock. In the present research, the removal of impurities from silicon is studied ... -
Orientation relationships of phase transformation in α-Al12Mn3Si pseudomorphs after plate-like Al6Mn precipitate in an AA3004 Al-Mn based alloy
(Journal article; Peer reviewed, 2017)The phase transformation in the plate-like precipitates of Al6Mn in an AA3004 Al-Mn based alloy, which was prepared by a chemical extraction technique, was investigated using transmission electron microscopy. The boiling-phenol ... -
Extremely low thermal conductivity and high thermoelectric performance in liquid-like Cu2Se1-xSx polymorphic materials
(Journal article, 2017)Recently, copper chalcogenides Cu2−xδ (δ = S, Se, Te) have attracted great attention due to their exceptional thermal and electrical transport properties. Besides these binary Cu2−xδ compounds, the ternary Cu2−xδ solid ... -
Formation of Carbon Build-Up on the Flue Wall of Anode Baking Furnace
(Journal article; Peer reviewed, 2017)A hard carbon build-up layer often forms on the flue wall surface in anode baking furnaces. The layer accumulates over thermal circles and needs to be mechanically removed regularly to ensure sufficient space for the anodes ...