Browsing Institutt for materialteknologi by Document Types "Doctoral thesis"
Now showing items 1-20 of 244
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4d/5d Transition Metals in Perovskite Cathode Materials
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:131, Doctoral thesis, 2013)Solid oxide fuel cells (SOFCs) have the potential to convert chemical energy to electrical energy in an efficient and environmentally friendly manner. The high operational temperatures of the first generation of SOFCs ... -
A computational study of recrystallisation and grain growth using a 3D Potts Monte Carlo model
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:34, Doctoral thesis, 2009)The ever increasing capability of computer systems and the advances in theoretical understanding of the underlying physics and chemistry of materials have, over the last couple of decades, provided the basis for mathematical ... -
A process model for friction stir welding of age hardening aluminium alloys
(Dr. ingeniøravhandling, 0809-103X; 1999:76, Doctoral thesis, 1999) -
A Study of Localized Corrosion in Supermartensitic Stainless Steel Weldments
(Dr.ingeniøravhandling, 0809-103X; 2002:72, Doctoral thesis, 2002)This doctoral thesis is concerned with pitting corrosion in super martensitic stainless steel (SMSS) weldments in slightly sour service. Thee main objective with the present thesis has been to find out why pitting corrosion ... -
Adhesian of organic coatings on aluminium
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:55, Doctoral thesis, 2009) -
Agglomeration in Ferromanganese Submerged arc Furnaces with Focus on K and Zn Deposition
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:137, Doctoral thesis, 2012) -
Aging of Si3N4-bonded SiC Sidewall Materials in Hall-Héroult Cells: Material Characterization and Computer Simulation
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:229, Doctoral thesis, 2010)Si3N4-bonded SiC materials have become the state-of-the-art sidewall block materials used in aluminium electrolysis cells. Despite its outstanding properties, the material properties degradate in the cell over time. The ... -
Alkali‐silica reaction (ASR) – Performancetesting
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:269, Doctoral thesis, 2013)Whether or not concrete prism tests developed for assessment of alkali‐silica reactivity of aggregates is suitable for general ASR performance testing of concrete has been evaluated. The work has been part of the Norwegian ... -
Alternative Li-ion Cathodes based on Transition Metal Orthosilicates
(Doctoral thesis at NTNU;2016:57, Doctoral thesis, 2016)The aspiration of today’s society to become independent from crude oil and nuclear power led to a rapid growth of renewable energy production. Unfortunately, the majority of these energy sources are discontinuous and require ... -
Ammonia as Hydrogen Carrier. Effects of Ammonia on Polymer Electrolyte Membrane Fuel Cells
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:25, Doctoral thesis, 2004) -
An Experimental and Numerical Study of Heat Transfer in Aluminium Melting and Remelting Furnaces
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:30, Doctoral thesis, 2013)This work has been a combined experimental and numerical modeling effort aimed to help in the understanding of heat transfer processes when melting aluminium. In addition a newly developed type of oxy-fuel burner was ... -
Analyses and Characterization of Fossil Carbonaceous Materials for Silicon Production
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:30, Doctoral thesis, 2008)Production of high silicon alloys is carried out in submerged arc furnaces by reduction of silicon bearing oxides (typically quartz) with carbon materials. Carbonaceous materials like coal, coke, charcoal and woodchips are ... -
Anodic Activation of Aluminium by Trace Element Gallium
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:37, Doctoral thesis, 2013) -
Anodic Activation of Aluminum by Trace Element Tin
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:241, Doctoral thesis, 2011)Anodic activation of commercial and model aluminum alloys in chloride solution became of practical importance in connection with filiform corrosion of painted aluminum sheet in architectural application and aluminum ... -
Aqueous sol-gel processing of transparent conducting rare earth doped indium tin oxide
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:226, Doctoral thesis, 2013)Transparent conducting oxides (TCOs) demonstrate optical transparency in the visible region of the electromagnetic spectrum combined with near-metallic electrical conductivity. Owing to this unique combination of properties, ... -
As Cast and Rapidly SolidifiedTi-V Alloys for Selective Hydrogen Absorption
(Doctoral Theses at NTNU, 1503-8181; 2012:204, Doctoral thesis, 2012)Steam reforming of hydrocarbons is a dominant technology in the commercial production of hydrogen. Hydrogen Sorption Enhanced Reforming (HSER) is a novel concept recently proposed by Statoil, with the aim of increasing the ... -
Aspects related to the thermal and mechanical stability of oxygen permeable membranes
(Doctoral theses at NTNU;2017:59, Doctoral thesis, 2017)Fossil fuels causes CO2 emission to the atmosphere after combustion, and to minimize CO2 emission carbon capture and sequestration (CCS) technologies are under development. CCS involves CO2 capture, compression, transport ... -
Barrier Oxide Growth and Dissolution on Aluminium in Aqueous Media
(Doctoral theses at NTNU;2016:326, Doctoral thesis, 2016)The oxide formed during anodization of aluminium has been a subject of attention since the beginning of the 20th century, due to its protective properties. The oxide consists of two layers, a dense layer adjacent to the ... -
Behaviour of iron and titanium species in cryolite-alumina melts
(Dr.ingeniøravhandling, 0809-103X; 2000:118, Doctoral thesis, 2000)The solubility of divalent iron oxide in cryolite-based melts was studied. Both electrochemical and chemical techniques were employed. To ensure that only divalent iron was present in solution, the melt was contained in ... -
Bipolar Plates for PEM Systems
(Doctoral thesis at NTNU;2016:247, Doctoral thesis, 2016)Summary of thesis: The Bipolar Plate (BPP) is an important component in both Proton Exchange Membrane Fuel Cells (PEMFCs) and Proton Exchange Membrane Water Electrolyzers (PEMWEs). Bipolar plate material and processing ...