Blar i Institutt for materialteknologi på emneord "MTKJ Industriell kjemi og bioteknologi"
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Ceramic Thermal Barrier Coatings of Yttria Stabilized Zirconia Made by Spray Pyrolysis
(Master thesis, 2011)A thermal barrier coating (TBC) is used as thermal protection of metallic components exposed to hot gas streams in e.g. gas turbine engines. Due to a high thermal expansion coefficient, low thermal conductivity, chemical- ... -
Characterization of precipitates at maximum hardness and overaged conditions in Al-Mg-Si alloys
(Master thesis, 2011)A study of the influence of artificial ageing temperature on the precipitation behaviour in three distinct direct chill casted and extruded Al-Mg-Si alloys has been carried out. The total amount of alloying elements is ... -
Compatibility Study of Carbon-Based Refractory Materials utilized in Silicomanganese Production Furnaces
(Master thesis, 2011)Tap hole refractories constitute critical parts of the refractory lining in submerged arc furnaces. For several hours every day, molten slag and metal flow through the tap hole calling for thorough selection of refractory ... -
Electro-oxidation of ethanol at Pt electrodes with the use of a Dynamic Electrochemical Impedance Spectroscopy (DEIS) technique
(Master thesis, 2012)Electro-oxidation of ethanol on smooth platinum surfaces was studied in thetemperature range 21C to 140C for 0.2 M ethanol in 0.5 M sulphuric acid.This was done by use of cyclic voltammetry and electrochemical impedances ... -
High Temperature Cathodic Disbondin of Organic Coatings on Submerged Steel Structures
(Master thesis, 2011)There are currently no standard test methods for testing the cathodic disbonding properties of organic coatings at temperatures above 100 C. There are several subsea oil and gas reservoirs with high temperatures, some as ... -
Hydrothermal Synthesis of LaFeO3
(Master thesis, 2011)This work explores the hydrothermal synthesis of LaFeO3 (LFO) nanorods with a high aspect ratio. Synthesis of rod shaped LFO is a stepping stone to the synthesis of strontium doped LFO (LSF) nanorods with high aspect ratio. ... -
Kimdanning av sprøbrudd i simulert grovkornet HAZ i et arktisk stål
(Master thesis, 2012)Det har blitt estimert at 30 % av verdensuoppdagede gassreserver og 13 % av verdens uoppdagede oljereserver ligger i de polare områdene i nord. Man trenger derfor materialer som tåler lave temperaturer for å hente opp denne ... -
Microfluidic flow cells for studies of electrochemical reactions
(Master thesis, 2012)In this project the main goal was to establish a routine for making a microfluidic flow cell (MFFC) using soft lithography methods, and test the flow cell with different electrolytes, sulphuric acid and a ruthenium red-ox ... -
Removal of boron from silicon by slag treatment and by evaporation of boron from slag in hydrogen atmosphere
(Master thesis, 2012)Background and objective: Removal of boron is one of the main challenges in the purification of metallurgical grade silicon (MG-Si) for solar cells and a simple low cost method is therefore needed. Boron removal by slag ... -
Texturing of lead-free piezoelectric ceramics
(Master thesis, 2012)A procedure for texturing of lead-free piezoelectric ceramics based on sodium potassium niobate (KNN) was investigated with respect to texturing procedure and choice of materials.Material compositions that were considered ... -
Wet-chemical deposition of silicon quantum dots for enhanced solar cell efficiency
(Master thesis, 2011)Silicon quantum dots were synthesised wet-chemically by three different methods based on reduction of silicon tetrachloride with the reduction agents potassium naphthalide, sodium cyclopentadiene and the alkalide of ...