Browsing Institutt for materialteknologi by Issue Date
Now showing items 181-200 of 2534
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Properties and Production Conditions Affecting Crack Formation and Propagation in Carbon Anodes
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:85, Doctoral thesis, 2011) -
Oxidation of Liquid Silicon in a Medium Scale Induction Furnace: Examination of the Fuming Rate and Fume Composition
(Master thesis, 2012)The aim of this work was to study the effect of flow rate on the fuming rate/silica flux of liquid silicon in order to gain a better understanding of the silica fuming during industrial ladle refining during silicon ... -
Lipase Catalysed Kinetic Resolution of Stiripentol
(Journal article; Peer reviewed, 2012)Kinetic resolution of rac-Stiripentol, catalysed by lipase A from Candida antarctica by esterification with vinyl butanoate was performed with an E-value of 24. This allowed isolation of (3S)-Stiripentol with an ee of 86 ... -
Carbon-supported Ru @ Pt Core-shell Catalyst for Low Temperature Fuel Cells
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:33, Doctoral thesis, 2012)A novel synthesis route for the manufacturing of Ru@Pt core-shell nanoparticles (NPs) originating from the University of Maryland, USA, was reproduced and adapted for electrochemical purposes in our laboratories at NTNU. ... -
Agglomeration in Ferromanganese Submerged arc Furnaces with Focus on K and Zn Deposition
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:137, Doctoral thesis, 2012) -
Phase composition, microstructure and resistance to attrition of alumina-based supports for Fischer-Tropsch catalysts
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:43, Doctoral thesis, 2012)The key element in gas-to-liquid technology is the Fischer-Tropsch (FT) synthesis in which liquid hydrocarbons are produced from syngas (CO and H2). During FT synthesis the catalyst and the catalyst support are subjected ... -
Performance of supported catalysts for water electrolysis
(Master thesis, 2012)The most active catalyst for oxygen evolution in PEM water electrolysis is ruthenium oxide. Its major drawback as a commercial catalyst is its poor stability. In a mixed oxide with iridium, ruthenium becomes more stable. ... -
Spray Pyrolysis of Thermal Barrier Coatings
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:142, Doctoral thesis, 2012)Thermal barrier coatings are multilayer systems developed to increase the operating temperature and lifetime of modern gas-turbine engines by thermally insulating the underlying superalloy components. Thick oxide thermal ... -
Long-Life, Low-Maintenance Coating Systems
(Journal article; Peer reviewed, 2012)A coating system with low maintenance will often give lower life-cycle costs, in spite of higher costs in the new construction phase. The Public Roads Administration in Norway has been using coating systems consisting of ... -
Effect of Sulfide Inclusions in Austenitic Stainless Steel on the Initiation of Pitting in Base Metal and Heat Affected Zone after Welding
(Master thesis, 2012)The predominant site for the initiation of pitting on austenitic stainless steel has been shown to be sulfide inclusions and notably the manganese types of sulfides. Dissolution of inclusions has been observed and suggested ... -
Liquid Permeability of Ceramic Foam Filters
(Master thesis, 2012)This project is in support of the PhD project: Removal of Inclusions from Liquid Aluminium using Electromagnetically Modified Filtration . The purpose of this project was to measure the tortuosity, and permeability of ... -
Synthesis and characterisation of the nanostructured magnesium-lanthanum-nickel alloys for Ni-metal hydride battery applications
(Master thesis, 2012)Affordable price, high abundance of magnesium and high densities of hydrogenin the Mg-based hydrides attract interest to these hydrides tailored for hydrogenand energy storage applications. Ternary La-Mg-Ni hydrogen storage ... -
Polarization and strain response in Bi0.5K0.5TiO3-BiFeO3 ceramics
(Journal article; Peer reviewed, 2012)Highly dense and phase-pure ferroelectric ceramics in the (1-x)Bi0.5K0.5TiO3–xBiFeO3 system have been prepared and examined in a wide range of composition (0.1 ≤ x ≤ 0.9). The dielectric and electromechanical properties ... -
Synthesis and Characterization of Hydrogen Transport Membranes
(Master thesis, 2012)Hydrogen transport membranes have gained interest from industry as an alternative to pressure swing adsorption or cryogenic distillation, and are aimed to reduce cost, equipment size, energy consumption and waste generation. ... -
Effekt av høyt silisiuminnhold i stål
(Master thesis, 2012)Det har i dette arbeidet blitt undersøkt hvilke effekter relativt store mengder silisium har på egenskaper i stål. To ulike deler i stål, tinder og fjærer, som jordbruksselskapet Kverneland Group ASA produserer, har blitt ... -
Removal of Boron from Silicon by Gas refining with Water and Hydrogen
(Master thesis, 2012)A high demand of silicon for solar cells has lead to a search of an alternative route to solar grade silicon. A suggested method is upgrading metallurgical grade silicon. This thesis focuses on the gas refining of silicon ... -
Effect of Copper Content on etching Response of Aluminum in Alkaline and Acid Solutions
(Master thesis, 2012)Copper are used as an alloying element in aluminum alloys to increase the strength of the material. By mixing copper and aluminum the good corrosion resistance of the pure aluminum decreases giving the alloy a lower corrosion ... -
Lead-Free Relaxor-Like 0.75Bi(0.5)K(0.5)TiO(3)-0.25BiFeO(3) Ceramics with Large Electric Field-Induced Strain
(Journal article; Peer reviewed, 2012)Dense and phase-pure ferroelectric ceramics of 75 mol.% Bi0.5K0.5TiO3 – 25 mol.% BiFeO3 are prepared by the conventional solid state reaction method. Their crystal structure is analyzed and discussed. The dielectric and ... -
Carbon Nano-Fibre Supported Electrocatalysts for Fuel Cells
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:294, Doctoral thesis, 2012)This thesis covers topics related to fuel cell electrocatalyst preparation and electrochemical characterization. In particular, the influence of catalyst support material for Pt catalysts is examined in detail. The aim is ... -
Application of EBSD technique to ultrafine grained and nanostructured materials processed by severe plastic deformation: Sample preparation, parameters optimization and analysis
(Journal article; Peer reviewed, 2012)With the help of FESEM, high resolution electron backscatter diffraction can investigate the grains/subgrains as small as a few tens of nanometers with a good angular resolution (∼0.5°). Fast development of EBSD speed (up ...