Browsing Institutt for materialteknologi by Issue Date
Now showing items 681-700 of 2540
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Mechanisms and Kinetics of Boron Removal from Silicon by Humidified Hydrogen
(Journal article; Peer reviewed, 2016)The removal of boron from silicon by top blowing of humidified hydrogen has been studied in the present work through experimental work, thermodynamic calculations, computational fluid dynamic modeling, and quantum chemistry ... -
Hydrogen Induced Stress Cracking of Inconel 625 - Effect of Production Method, Heat Treatment and Cold Working
(Master thesis, 2016)The following work has examined the effect of heat treatment, production method and cold working (CW) on the hydrogen induced stress cracking (HISC) susceptibility of Inconel 625 (UNS N06625). This was done by hydrogen ... -
Wear of Carbon Refractory Materials in Silicon Furnaces
(Master thesis, 2016)The goal of this thesis was to investigate the internal morphology of different types of lining prepared with different installation techniques and different binders, and to see how the internal morphology affects the ... -
Raman spectroscopy of mackinawite FeS in anodic iron sulfide corrosion products
(Journal article; Peer reviewed, 2016)Raman spectroscopy in a confocal microscope was used to study electrochemically synthesized corrosion products from sour gas experiments. When exposed to oxygen-containing atmosphere, the initial mackinawite FeS corrosion ... -
Pitting Corrosion of Super Duplex Stainless Steel - Effect of Isothermal Heat Treament
(Master thesis, 2016)Super duplex stainless steels (SDSS), with a chromium content of 25 wt$\%$, contain a duplex structure which consists of ferrite and austenite, and have a pitting resistance equivalent number (PREN) equal or higher than ... -
Reduction of Norwegian and Indian ilmenite with carbon monoxide and hydrogen gas blends
(Journal article, 2016)Synthesis gas, produced from natural gas, can be used to minimise coal consumption and carbon dioxide emissions during the processing of ilmenite. Two different ilmenite ores have been reduced with carbon monoxide and ... -
Gjenvinning av Sjeldne Jordarter fra Elektronisk Avfall
(Master thesis, 2016)De sjeldne jordartene er en gruppe av grunnstoffer med like kjemiske egenskaper som omfatter lantanoidene og scandium og yttrium. I løpet av de siste tiårene har de blitt essensielle for moderne og grønn teknologi, men ... -
Interfacial Boundary between Carbon Anodes and Molten Salt Electrolyte
(Journal article, 2016)The properties of calcined petroleum cokes (CPC), used in the anodes in the Hall-Héroult process, are important for the electrochemical behaviour of the anodes. CPCs from different sources vary not only in impurity level ... -
Preparation of Inks for Inkjet Printing of Thin Films in Solid Oxide Fuel Cells
(Master thesis, 2016)Solid oxide fuel cell technology can achieve high efficiency when producing electric power. To produce these fuel cells with a high quality and a low cost, inkjet printing can be utilized. This technique is highly dependent ... -
Natural Gas Anodes for Aluminium Electrolysis in Molten Fluorides
(Journal article; Peer reviewed, 2016)Industrial primary production of aluminium has been developed and improved over more than 100 years. The molten salt electrolysis process is still suffering from low energy efficiency and considerable emissions of greenhouse ... -
Electrical and structural properties of multicrystalline silicon grown from reusable silicon nitride crucibles
(Master thesis, 2016)The solar cell industry has grown considerably and experiences renewed public interest due to technological advances and awareness of human impact on the environment. However, the industry faces several challenges that ... -
Oxygen Incorporation and Release in Metastable Bixbyite V2O3 Nanocrystals
(Journal article, 2016)A new, metastable polymorph of V2O3 with a bixbyite structure was recently stabilized in colloidal nanocrystal form. Here, we report the reversible incorporation of oxygen in this material, which can be controlled by varying ... -
Characterization of cement types used for rock injection
(Lecture, 2016)This paper is a part of the research project “True Improvement in Grouting High pressure Technology for tunneling (TIGHT)" financed by the Research Council of Norway (project no. 236676/O30), in cooperation with Statens ... -
Effect of A-Site Cation Ordering on Chemical Stability, Oxygen Stoichiometry and Electrical Conductivity in Layered LaBaCo2O5+d Double Perovskite
(Journal article; Peer reviewed, 2016)Abstract:The effect of the A-site cation ordering on the chemical stability, oxygen stoichiometryand electrical conductivity in layered LaBaCo2O5`δdouble perovskite was studied as a function oftemperature and partial ... -
Investigation on Quartz Crucibles for Monocrystalline Silicon Ingots for Solar Cells
(Master thesis, 2016)This thesis focuses on the bubble formation and growth in the quartz crucibles used to produce Czochralski (Cz) monocrystalline silicon ingots for solar cells production. Several experiments have been conducted to investigate ... -
Parameters Affecting Softening and Melting of Quartz
(Master thesis, 2016)The aim of this work was to develop and improve a new method for investigating how different parameters affect the softening and melting of quartz. The method should give quantitative results. Quartz is the stable phase ... -
Synthesis and oxygen transport properties of La2 − ySryNi1 − xMoxO4 + δ
(Journal article; Peer reviewed, 2016)La2NiO4 + δ-based materials (LN) with tetragonal K2NiF4-type structure exhibit high electronic and oxygen ion conductivity. In this work synthesis, phase relations and oxygen transport properties are reported for the system ... -
A microfluidic electrochemical cell with integrated PdH reference electrode for high current experiments
(Journal article; Peer reviewed, 2016)An on-chip thin-film palladium hydride reference electrode is described for use with microfluidic electrochemical cells. A Pd electrode fabricated by photolithographic methods is charged with hydrogen in-situ with a simple ... -
Method for studying high temperature aqueous electrochemical systems: Methanol and glycerol oxidation
(Journal article; Peer reviewed, 2016)A method for high purity aqueous electrochemical experiments at temperatures above the normal boiling point of water and at temperatures up to 140 °C is described. A three-electrode cell in a self-pressurized glass autoclave ... -
Mechanism of the potential-triggered surface transformation of germanium in acidic medium studied by ATR-IR spectroscopy
(Journal article; Peer reviewed, 2016)In acidic solution, germanium surfaces undergo a transformation to hydrogen-terminated surfaces at sufficiently negative electrode potentials. Herein, we used in situ and operando attenuated total reflection infrared ...