Browsing Institutt for materialteknologi by Issue Date
Now showing items 281-300 of 2534
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Exergy relations in manganese production: Modelling the submerged arc furnace
(Master thesis, 2013)A model of the ferromanganese submerged arc furnace was purposed to yield valuable information for exergy calculations. A deeper understanding of at what point exergy is lost in the furnace might yield valuable information ... -
Investigating Endocytosis in HeLa Cells seeded on CuO Nanowires
(Master thesis, 2013)Nøkkelord: nanowires, early endosomes. -
Plastic-Anisotropy Modelling: Texture, Strain-Rate and Strain-Path Changes
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:304, Doctoral thesis, 2013)The work presented in this thesis deals with the computational modelling of the plastic anisotropy induced in the materials during the deformation process on three different scales. The main mechanism responsible for plastic ... -
The Effect of Solute Atoms on Grain Boundary Migration: A Solute Pinning Approach
(Journal article, 2013)The effect of solute atoms on grain boundary migration has been modeled on the basis of the idea that solute atoms will locally perturb the collective rearrangements of solvent atoms associated with boundary migration. The ... -
Texturing of Lead-free Ferroelectric Ceramics
(Master thesis, 2013)The lead-free ferroelectric system 0.75Bi0.5K0.5TiO3-0.25BiFeO3 has been investigated with respect to crystallographic texturing. Recent studies have shown that the system have promising electromechanical properties and ... -
Fabrication of a Novel Al/Mg Composite:: Processing and Characterization of Pure Aluminium, Al/AZ31 Alloy Bi-Metal and Aluminium based Sheet Composites by Severe Plastic Deformation
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:318, Doctoral thesis, 2013) -
Porous Silicon as Anode Material for Li-ion Batteries: Structure and Performance
(Master thesis, 2013)Silicon has proven to have a great potential as anode material in lithium-ion batteries due to its high theoretical electrochemical capacity. However, silicon anodes deteriorate quickly during cyclic charging and discharging, ... -
Anodeprosesser i elektrokjemisk fremstilling av sink
(Master thesis, 2013)Målet med denne oppgaven var å studere utfellingen av manganoksid fra en svovelsur elektrolytt inneholdende manganspesier. Syklisk voltametri, lineærsveip voltametri og potensialsteg ble utført på ulike elektrodematerialer. ... -
Alkaline oxide interface modifiers for silicon fiber production
(Journal article; Peer reviewed, 2013)We demonstrate the ability to pull small diameter silicon-core fibers with low oxygen content by using interface modifiers between the silica cladding and the semiconductor. Alkali earths scavenge oxygen and form a ... -
Thermodynamic and Kinetic Behavior of B and Na Through the Contact of B-Doped Silicon with Na2O-SiO2 Slags
(Journal article; Peer reviewed, 2013)Boron (B) is the most problematic impurity to be removed in the processes applied for the production of solar grade silicon. Boron removal from liquid silicon by sodium-silicate slags is experimentally studied and it is ... -
Silicon for silicon nitride based products
(Master thesis, 2013)Previous studies have shown that the oxide layer on the surface of silicon particles can reduce the hydrogen evolution that comes from contacting silicon with water during slip casting, prior to nitridation. This study ... -
Combined EBSD-Investigations and In-situ Tensile Tests of a Direct Metal Deposited Ti6Al4V-Alloy
(Master thesis, 2013)Two blocks made of Ti6Al4V material produced by Norsk Titanium Components ned Direct Metal Deposition (DMD) production technology were delivered for this investigation. The main difference between the blocks was the different ... -
Electrochemical and photoelectrochemical characterization of porous semiconducting electrodes
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:262, Doctoral thesis, 2013)CaNb2O6 particles with crystallite sizes from 24 to 64 nm have been produced by solgel synthesis. The flatband potential was by impedance measurements determined to be around -0.4 V vs. NHE for a bulk sample, which is in ... -
Characterizing hardening on annealing of cold-rolled aluminum AA3103 strips
(Journal article; Peer reviewed, 2013)AA3103 aluminum strips were cold rolled to various von Mises strains up to 4.7. In addition, two severely deformed conditions were obtained by one and four cycles of cold accumulated roll bonding subsequent to cold rolling ... -
The effect of silicon on the strengthening and work hardening of aluminum at room temperature
(Journal article; Peer reviewed, 2013)Solution hardening of Al–Si alloys at room temperature was investigated by tensile tests of several aluminum alloys containing various amounts of Si in solution but fabricated from the same commercially pure base material. ... -
On the chemical and electrochemical formation of aluminium carbide in aluminium electrolysis
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:287, Doctoral thesis, 2013)Cathode wear is considered as one of the key factors for limiting the lifetime of aluminium electrolysis cells. This phenomenon has become more important as aluminium smelters have steadily increased the amperage of the ... -
Trace Elements in Al-Si Foundry Alloys
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:360, Doctoral thesis, 2013)Aluminium alloys based on the aluminium-silicon system are widely used for automotive and aerospace applications as this industry seeks competitive light materials to replace e.g. cast iron and steel. Al-Si alloys have low ... -
Implementasjon av en ny modell for presipitering av kuboide partikler.
(Master thesis, 2013)Målet med dette prosjektet var å implementere en modell for å beskrive hvordan distribusjonen av presipitater endres underveis ved presipitering i aluminiumslegeringer, som kan brukes til alle sideforhold av presipitatnåler. ... -
Nanostructured cathode materials for Li-ion batteries
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:32, Doctoral thesis, 2013) -
Mechanisms and kinetics of liquid silicon oxidation
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:145, Doctoral thesis, 2013)The formation of silica fume when liquid metal is in contact with air during refining of metallurgical grade silicon leads to a direct loss of silicon. Apart from this yield loss the associated fume may be harmful to the ...