Blar i Institutt for materialteknologi på emneord "MIKJ Industriell kjemi og bioteknologi"
Viser treff 1-16 av 16
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An experimental investigation of co-sintering of oxygen permeable asymmetric membranes with composition La0.2Sr0.8Fe0.8Ta0.2O3-*.
(Master thesis, 2012)Asymmetric membranes of composition La0.2Sr0.8Fe0.8Ta0.2O3 were co-sintered from tape casted membranes and porous supports. The ceramic powders for dense and porous supports were obrained through coarsening and solid state ... -
Characterization and recovery of rare earth elements from electronic scrap
(Master thesis, 2012)The rare earth elements are a group of 17 elements consisting of the lantahnide series, scandium and yttrium. The application with the largest rare earth consumption is the permanent rare earth magnets. The neodymium-iron-boron ... -
Comparison Between Microstructure Parameters and Electrochemical Performance of Ni-CGO Anodes in SOFC Subjected to Redox-Cycling
(Master thesis, 2011)The aim of this thesis was to create an understanding between the electrochemical performance of a porous Ni-CGO anode used in SOFC, and its microstructural parameters when subjected to redox-cycling. The anode samples ... -
Composition and Surface Modifications of Silica Structures in Diatiom Frustules by Incorporation of Functional Oxides and Nitride Formation
(Master thesis, 2012)Renewable energy production featuring silicon photovoltaic solar cells are of considerable interest to reduce pollution and related environmental changes. Improvements in efficiency along with reductions in cost are key ... -
Corrosion of Thermally Sprayed Aluminum in Flowing Seawater
(Master thesis, 2012)Raw sea water can be pumped into subsea wells where pressure drops have occurred to increase the pressure again and thereby the production rate. Thermally sprayed aluminum (TSA) is considered as internal corrosion protection ... -
EBSD undersøkelser og in situ strekktesting av stål i SEM
(Master thesis, 2012)Denne masteroppgaven har tatt for seg undersøkelser av stål designet for lavtemperaurappliksjoner ved bruk av elektronmikroskop i kombinasjon med diffraksjon av tilbakespredte elektroner (Electron Backscatter Diffraction ... -
Effect of marine environment on the tribology performance of materials used in lubricated rotating parts of offshore wind turbines
(Master thesis, 2012)The use of offshore wind turbines as a source of renewable energy is promising. However, many challenges have to be solved before they will be cost effective. The operation time, without any maintenance required, is desired ... -
Investigation of metallic bipolar plates for PEM fuel cells
(Master thesis, 2011)High cost and a short lifetime are the two main reasons why the PEM fuel cell is yet to be commercialized. The bipolar plate in a PEM fuel cell is alone responsible for about 45% of the cost and 85% of the total weight of ... -
Organic binder as a substitute for bentonite in ilmenite pelletization
(Master thesis, 2012)TiZir Titanium & Iron produces high titania slag and high purity pig iron from ilmenite in Tyssedal. The ilmenite is pelletized before smelting. Bentonite is added to the ilmenite concentrate as a binder to give the pellets ... -
Oxidation of silicon powder in humid air
(Master thesis, 2012)Silicon undergoes oxidation at room temperature, causing a formation of an oxide layer on its surface. Gaining knowledge about the oxide layer formed during ageing, is valuable with regards to production of high quality ... -
Photoelectrochemical Hydrogen Production
(Master thesis, 2012)The possibilities for using CaNb2O6 as a photocatalyst in direct water splitting have been evaluated by investigating the electronic structure of the material. In addition the oxide was doped with nitrogen in order to ... -
Pitting and Crevice Corrosion of Stainless Steel under Offshore Conditions
(Master thesis, 2012)AISI 316/316L has traditionally been used in offshore topside environments when operating under low temperatures. It has been observed that the AISI 316/316L piping suffer from severe attacks of pitting and crevice corrosion ... -
Process- and Alloy Development of Recyclable Aluminium Alloys: Recovery and Recrystallization Behavior of a Selection of AlMn-model Alloys
(Master thesis, 2011)A study of the effect of various amounts of manganese in solid solution on the recovery and recrystallization behavior of an AlMn-alloy, for different annealing conditions after different degrees of deformation (cold ... -
Refining of Silicon by Solidification of Al-Si Melt
(Master thesis, 2012)Primary silicon crystals grown from an Al-Si melt has been investigated by solidifying directionally and under electromagnetic field. The goal of this thesis was to increase the size of the primary Si crystals and to ... -
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 ... -
Wet Chemical Synthesis of Materials for Intermediate Band Solar Cells
(Master thesis, 2011)The economical feasibility of commercial, single-junction solar cells is limited by high costs and limited efficiencies. New solar cell concepts and materials are sought to decrease the production costs and increase the ...