Browsing Institutt for materialteknologi by Issue Date
Now showing items 641-660 of 2540
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Influence of electrode gas flow rate and electrolyte composition on thermoelectric power in molten carbonate thermocell
(Journal article, 2016)A thermocell (thermo-electrochemical cell) is an electrochemical system with two identical electrodes placed at different temperatures in an electrolyte solution. Ion transport between the electrodes due to the temperature ... -
The influence of processing conditions on microchemistry and the softening behavior of cold rolled Al-Mn-Fe-Si alloys
(Journal article; Peer reviewed, 2016)Using different homogenization treatments, different initial microchemistry conditions in terms of solid solution levels of Mn, and number densities and sizes of constituents and dispersoids were achieved in an Al-Mn-Fe-Si ... -
EFFECT OF Ni ADDITIONS ON MECHANICAL PROPERTIES AND MICROSTRUCTURE OF THE A356 ALUMINIUM FOUNDRY ALLOY
(Master thesis, 2016)In the last years, aluminium producers have reported increasing Ni concentrations in primary aluminium originating from the anodes employed during the electrolytic reduction of alumina. Due to the absence of cost efficient ... -
Elektriske ledere av skrueekstrudert aluminium - Effekt av kjemisk sammensetning, termo-mekanisk bearbeiding og deformasjon
(Master thesis, 2016)Skrueekstrudering av aluminium er en ny og unik metode for å oppnå kontinuerlig ekstrudering av aluminium. Det er veldig aktuelt å kunne utnytte restaluminium fra produksjonsindustrien eller resirkulert skrap til noe ... -
α-Mg primary phase formation and dendritic morphology transition in solidification of a Mg-Nd-Gd-Zn-Zr casting alloy
(Journal article; Peer reviewed, 2016)Microstructure evolution in the commercial Mg-Nd-Gd-Zn-Zr alloy Elektron 21, solidified under nearly isothermal conditions, has been studied via in-situ X-ray radiography. For cooling rates View the MathML source≤0.075 ... -
L-DOPA-Coated Manganese Oxide Nanoparticles as Dual MRI Contrast Agents and Drug-Delivery Vehicles
(Journal article; Peer reviewed, 2016)Manganese oxide nanoparticles (MONPs) are capable of time-dependent magnetic resonance imaging contrast switching as well as releasing a surface-bound drug. MONPs give T2/T2* contrast, but dissolve and release T1-active ... -
Porous Carbon Anodes for the Supply of Methane during Electrowinning of Aluminium
(Chapter, 2016)One of the major downsides of the current aluminium production process is the high amount of CO2 e mission. One alternative is to replace the consumable carbon anodes with inert anodes so that oxygen evolves instead of CO2 ... -
A TEM Study of Boron-implanted Cubic Silicon Carbide, for Solar Cell Applications
(Master thesis, 2016)Recent research suggests that high doses of boron implantation can introduce an intermediate electron energy band in cubic silicon carbide (3C-SiC). This makes it a viable material for a highly efficient intermediate band ... -
Directionality and column arrangement principles of precipitates in Al-Mg-Si-(Cu) and Al-Mg-Cu linked to line defect in Al
(Journal article, 2016)In the structures of all metastable precipitates in Al-Mg-Cu and Al-Mg-Si alloys, we find that column surrounding of an element column in the needle/lath direction order according to simple principles. Advanced transmission ... -
Slag and refractory compatibility in the CONSTEEL EAF
(Master thesis, 2016)This project is in collaboration with Celsa Armeringsstål AS facilities in Mo i Rana, consisting of a steel mill, with a continuous charging EAF (CONSTEEL Electric Arc Furnace), and a combined rolling mill for reinforcing ... -
In Situ Tensile Testing During Continuous EBSD Mapping of Super Duplex Stainless Steel Containing Sigma Phase
(Master thesis, 2016)Super duplex stainless steels (SDSS) are materials which comprise an extraordinary combination of mechanical properties, corrosion resistance and relatively low cost. SDSS were developed on the basis for use in the North ... -
Deposition of phase pure KNN thin Films
(Master thesis, 2016)Piezoelectric and ferroelectric materials have a wide range of applications, from touch and heat sensors to LCDs and actuators in MEMS. Lead zirconate titanate (PZT), is the most well-known ferroelectric material, and is ... -
Synthesis and Properties of YBaCo2O5+δ for Solid Oxide Fuel Cell Cathodes
(Master thesis, 2016)The layered double perovskite YBaCo2O5+δ was synthesised and characterised. The synthesis was done by solid-state reaction with several calcination steps at temperatures between 1000°C and 1130°C. The structure was ... -
Intergranulær korrosjon som følge av mekanisk og termisk prosessering av ekstruderte AlMgSi(Cu)-legeringer (KK13)
(Master thesis, 2016)Hovedformålet med denne rapporten er å bestemme hvilke faktorer som påvirker graden av intergranulær korrosjon i områder som er deformert på forskjellig måte og har ulik geometri. Dette er undersøkt med bakgrunn og grunnlag ... -
Defects in multicrystalline Si wafers studied by spectral photoluminescence imaging, combined with EBSD and dislocation mapping
(Journal article; Peer reviewed, 2016)Defect related sub-band gap luminescence emissions due to Shockley-Read-Hall recombination in mc-Si wafers have been investigated with spectral photoluminescence imaging, combined with electron backscatter diffraction and ... -
Production of Silicomanganese from Comilog Ore - Reduction Behavior
(Master thesis, 2016)The reduction behavior of silicomanganese (SiMn) charges based on Comilog ore was investigated. The charges were heated up to to different temperatures by using a thermogravimetric graphite tube furnace. The weight loss ... -
Comparing electrochemical perormance of transition metal silicate cathodes and chevrel phase Mo6S8 in the analogous rechargeable Mg-ion battery system
(Journal article; Peer reviewed, 2016)Polyanion based silicate materials, MgMSiO4 (M = Fe, Mn, Co), previously reported to be promising cathode materials for Mg-ion batteries, have been re-examined. Both the sol-gel and molten salt methods are employed to ... -
Solidification of Titanium Slags and Influence on Post Processing
(Master thesis, 2016)Ilmenite is a titanium-rich ore, and accounts for almost all the world's consumption of titanium bearing minerals. One of the main uses of titanium is as powdered TiO2, used extensively as whitening pigment. The first step ... -
Development of a method to determine oxygen distribution in industrial monocrystalline silicon ingots
(Master thesis, 2016)An alternative method to determine oxygen concentration in industrial monocrystalline silicon has been developed and tested, resorting to statistical analysis and modeling. The model has been applied to different set ... -
BORON REMOVAL FROM MOLTEN SILICON BY GAS BLOWING USING DIFFERENT GAS MIXTURES
(Master thesis, 2016)-