Browsing Institutt for materialteknologi by Issue Date
Now showing items 161-180 of 2534
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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 ... -
Design and manufacture of Portland cement Application of statistical analysis
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:196, Doctoral thesis, 2011)The purpose of the work is to enable design and manufacture of cement with emphasis on the quality and the properties of cement. Data used in the design and manufacture were collected from predictions of properties and ... -
Hydrogen Storage in Mg-based Alloys Nanostructured by Rapid Solidification
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:197, Doctoral thesis, 2011) -
Carbon Nanocones as Electrode Material in Lithium Ion Batteries
(Master thesis, 2011)A carbon powder containing carbon nanocones was used as an anode material in lithium ion batteries. The powder was also treated in different ways, chemically, with microwaves, and with heat. The carbon powder was tape ... -
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 ... -
Investigation of Inclusion Characteristics in LCAK Calcium Treated Steel: Inclusion characterization in 3-D using Electrolytic Extraction and SEM
(Master thesis, 2011)Low carbon steel samples taken during various stages of secondary refining were used in the present work for Electrolytic extraction (EE) to dissolve some metal and filter the solution to collect the inclusions.These film ... -
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 ... -
Oxide Hydrogen Interaction and Porosity Development in Al-Si Foundry Alloys
(Master thesis, 2011)The oxide level of an A356 aluminium alloy will be controlled by (i) melting, casting and remelting A356 aluminium alloy for increasing the bi-films levels in the melt, and by (ii) additions of an extruded aluminium oxide ... -
Quantitative study of grain refinement in Al-Mg alloy processed by equal channel angular pressing at cryogenic temperature
(Journal article; Peer reviewed, 2011)Strain induced grain refinement of an Al–1 wt.% Mg alloy processed by equal channel angular pressing (ECAP) at cryogenic temperature is investigated quantitatively. The results show that both mean grain and subgrain sizes ... -
Enantioselectivity, swelling and stability of 4-hydroxyprolinol containing acrylic polymer beads in the asymmetric reduction of ketones
(Journal article; Peer reviewed, 2011)A new 4-hydroxy-a,a-diphenyl-L-prolinol containing polymethacrylate, prepared without chromatography by a large scale adaptable synthesis, has been evaluated as a catalyst in the asymmetric reduction of 1-arylethanones. ... -
Production and Characterization of Advanced Bulk Metallic Glasses for Hip Implant Applications.
(Master thesis, 2011)AbstractThe aim of the present project was to investigate the possibilities of using a Zr55Cu30Ni5Al10 Bulk Metallic Glass (BMG) alloy as articulating surface in an artificial hip joint.In order for a material to be used ... -
Microstructure and enhanced mechanical properties of an Mg-10Gd-2Y-0.5Zr alloy processed by cyclic extrusion and compression
(Journal article; Peer reviewed, 2011)The evolution of microstructure and texture of an extruded GW102K Mg alloy processed by cyclic extrusion and compression (CEC) at 450 °C were investigated. Tensile tests were performed at room temperature and strain rate ... -
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 ... -
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 Structure and Optical Properties of Diatoms for improved Solar Cell Efficiency
(Master thesis, 2011)Interest in renewable energy resources has increased in recent years, and solar cells are one of the areas that have been subject to intensive research. For solar energy to develop into a competitive alternative to fossil ... -
Investigation of the mechanisms governing the deposition of sol particles on a substrate
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:46, Doctoral thesis, 2011) -
Syntese og karakterisering av katalysatorer for vannelektrolyse.: Effekt av bærestrukturer og synteseforhold på den katalytiske aktiviteten
(Master thesis, 2011)I denne masteroppgaven ble det syntetisert iridiumbaserte katalysatorer på en bærerstruktur for oksygenutviklingsreaksjonen i en PEM vannelektrolysør, ved hjelp av en polyolmetode. Katalysatorpulverne ble karakterisert ved ... -
Modeling of Tapping Processes in Submerged Arc Furnaces
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:149, Doctoral thesis, 2011) -
Production of Lead-free Electroceramics: K0.5Na0.5NbO3 substituted with Li & Ta
(Master thesis, 2011)K0:485Na0:485Li0:03Nb0:8Ta0:2O3 powder has been prepared by spray pyrolysis ofaqueous solutions of K/Na/Li nitrates mixed with water soluble Nb and Ta precursors.The as-prepared ceramic powder was calcined at 600 °C to ... -
Filtration of Aluminium Melts using Ceramic Foam Filters (CFF) and Electromagnetic Field
(Master thesis, 2011)AbstractThe objective of the experimental trials was to investigate the influence of the electromagnetic force generated by an AC powered solenoid on ceramic foam filters (CFF) of different filter grades (30, 50 and 80 ...