Browsing Institutt for materialteknologi by Issue Date
Now showing items 361-380 of 2534
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Distribution of boron between silicon and CaO-SiO2, MgO-SiO2,CaO-MgO-SiO2 and CaO-Al2O3-SiO2 slags at 1600°C
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:326, Doctoral thesis, 2013)New energy sources are needed for a sustainable future. Solar cells have a huge potential as a sustainable energy source but further development of this technology is needed for solar cells to become cost-competitive with ... -
Depolarized SnO2-based gas anodes for electrowinning of silver in molten chlorides
(Journal article; Peer reviewed, 2013)SnO2-based porous anodes were prepared and the behavior of gas bubbles on the porous anodes with different original coarse grain size, immersed in ethanol to simulate molten chlorides, was primarily investigated. SnO2-based ... -
Analysis of an Intermediate Band Solar Cell System: Based on Systems Engineering Principles
(Master thesis, 2013)The intermediate band solar cell (IBSC) is a so-called third generation solar cell, based on a new type of semiconductor materials; the intermediate band (IB) materials. In IB materials there is an additional intermediate ... -
Utherdbare bimetall materialer fremstilt ved skrueekstrudering: AA 6060/ren magnesium
(Master thesis, 2013)Skruekstrudering er en ny, innovativ prosess for å fremstille metaller. Prosessens store fortrinn er et relativt lav energiforbruk sammenliknet med tradisjonell ekstrudering, noe som i dagens energisamfunn er meget aktuelt. ... -
Stability and oxygen transport properties of B-site substituted Lanthanum stronitum [sic.] ferrite
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:310, Doctoral thesis, 2013) -
Kinetic Study of SiO2 + SiC Reaction in Silicon Production
(Master thesis, 2013)A number of researches related to kinetics of SiO2 + SiC reaction in the silicon production are limited and there is a gap between the real kinetics and mechanism of SiO2 + SiC reaction and people?s knowledge of that ... -
Development of Thermoelectric n-type Oxides in the La-Sr-Ti-O-System
(Master thesis, 2013)Development of donor-doped thermoelectric (TE) perovskite oxides based on strontium titanate (STO) was investigated with respect to synthesis, phase stability, and TE properties. La was employed as an A-site donor-dopant ... -
Effect of ultrasound on the distribution of nanoparticles in tumor tissue
(Master thesis, 2013)PC-3 prostate adenocarcinoma cells were injected subcutaneously in the hind leg of female Balb/c nude mice. After a few weeks of tumor growth, 200 $\mu$L of a solution containing gas bubbles stabilized by PBCA nanoparticles ... -
Sulfide Stress Corrosion Cracking Resistance of Modified ASTM A694 F60 Low Alloy Steel for Subsea Applications
(Master thesis, 2013)The resistance to sulfide stress corrosion cracking (SSC) of modified ASTM A694 F60 low alloy steel, produced by two different manufacturers, was studied by four-point bend-testing. The two materials are named material A ... -
Crystal Orientation of Iron Produced by Electrodeoxidation of Hematite Particles
(Journal article, 2013)Electrowinning of iron was conducted in a 50 wt% NaOH-H2O electrolyte with suspended Fe2O3 particles at 110ºC and pure α-Fe films were obtained on a disk cathode with a higher current efficiency than 95%. The Fe2O3 particle ... -
Cathode wear in Hall-Héroult cells
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:34, Doctoral thesis, 2013) -
Texturing of lead free piezoelectric ceramics
(Master thesis, 2013)Texturing of the lead-free system Ba0.92Ca0.08TiO3 (BCT) was investigated focusing on density, degree of texture and piezoelectric response. BCT templates were prepared in a two-step molten salt synthesis to achieve the ... -
Direct monitoring of minority carrier density during light induced degradation in Czochralski silicon by photoluminescence imaging
(Journal article; Peer reviewed, 2013)In this paper, we present a new method for studying the light induced degradation process, in which the minority carrier density is monitored directly during light soaking by photoluminescence imaging. We show experimentally ... -
Parameters Contributing to the Formation of NOx in the Silicon Furnace: The effect of the charging frequency and raw material composition on the formation of NO
(Master thesis, 2013)NOx is a harmful gas emitted primarily by the transport industry, agriculture and petroleum industry. The emissions contribute to acid rain and global warming. The gas also has certain health risks; when exposed to NO-based ... -
Mechanical properties of lightweight aggregates
(Journal article; Peer reviewed, 2013)Lightweight aggregates (LWAs) were successfully produced both in a pilot-scale rotary kiln and in a laboratory chamber furnace. The mechanical properties of LWA were investigated in detail applying the European standard ... -
The Optimization of Salt Additions during Processing of Aluminium-Magnesium Alloys
(Master thesis, 2013)Sodium is well known to be a cause for edge cracking during rolling of aluminium-magnesium alloys (AA5xxx). Due to this, requirements for the sodium contents in Al-Mg alloys are often less than 1,0 ppm. The electrolytic ... -
Tribology Mechanisms in Low-Friction Hardbanding Coatings.
(Master thesis, 2013)As the shallow and easily accessible oil and gas reservoirs are becoming depleted, the oil and gas industry has turned its attention towards the deeper and more remote reservoirs. The increased drilling depth, more complex ... -
Softening behaviour o fAl-Mn-Fe-Si alloys during isothermal annealing
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:358, Doctoral thesis, 2013) -
Structure and phase transitions in 0.5(Ba0.7Ca0.3TiO3)-0.5(BaZr0.2Ti0.8O3) from -100 degrees C to 150 degrees C
(Journal article; Peer reviewed, 2013)The solid solution of (x)Ba0.7Ca0.3TiO3-(1-x)BaZr0.2Ti0.8O3 is known to exhibit high piezoelectric constants. Discrepancies in the reported phase transitions and structure around room temperature, however, have complicated ... -
Static and Dynamic Transport Properties in Superconductors, Normal Metals and Ferromagnets
(Master thesis, 2013)In this thesis we consider transport properties in different hybrid nanostructures, consisting of normal metals, ferromagnets and superconductors. We investigate the thermal distribution of bound Andreev states, and use ...