Browsing Institutt for materialteknologi by Issue Date
Now showing items 461-480 of 2540
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Life cycle assessment of an offshore grid interconnecting wind farms and customers across the North Sea
(Journal article; Peer reviewed, 2014)This study aims to contribute to an improved understanding of the environmental implications of offshore power grid and wind power development pathways. To achieve this aim, we present two assessments. First, we investigate ... -
Investigation of Focused Ion Beam/Scanning Electron Microscope parameters for Slice and View and Energy Dispersive X-ray Spectroscopy of Embedded Brain Tissue
(Master thesis, 2014)This Thesis investigates the optimization of a Focused Ion Beam/Scanning Electron Microscope (FIB/SEM) Slice and View protocol of brain tissue. Using a Slice and View protocol in a Dualbeam instrument, the ion and electron ... -
IN-SITU FRACTURE MECHANICAL TESTING OF MICROSIZED CANTILEVERS
(Master thesis, 2014)The arctic is an appealing new ventures area for the oil and gas industry. However the climate is extremely demanding, and more technically challenging than any other environment. With design temperatures down to -60°C the ... -
Boron Removal from Silicon by Humidified Gases
(Journal article; Peer reviewed, 2014)Boron (B) is one of the most problematic impurities to remove from metallurgical grade silicon in the production of more pure solar grade silicon (SoG-Si). In the present work, recent progresses in the application of ... -
Corrosion protection of metals/alloys by EPD (electrophoretic deposition)
(Master thesis, 2014)A solid oxide fuel cell consists of multiple cells stacked on top of each other. Between the individual cells is an interconnect component. In intermediate temperature solid oxide fuel cells, this component is made of ... -
Modelling microstructure and properties during annealing of coldrolled Al-Mn-Fe-Si-alloys with different microchemistries
(Journal article, 2014)The physical basis and a mathematical formulation of a softening model nicknamed Alsoft, accounting for the combined effect of recovery and recrystallization during annealing of heavily deformed aluminium alloys have been ... -
Direct observation of ferroelectric field effect and vacancy-controlled screening at the BiFeO3/LaxSr1−xMnO3 interface
(Journal article, 2014)The development of interface-based magnetoelectric devices necessitates an understanding of polarization-mediated electronic phenomena and atomistic polarization screening mechanisms. In this work, the LSMO/BFO interface ... -
Synthesis and characterisation of textured lead-free piezoelectric ceramics
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:139, Doctoral thesis, 2014)Lead-based piezoelectric ceramics are applied extensively in electromechanical devices. While lead-free alternatives are available, their performance and/or reliability have not yet been developed to the extent that they ... -
Microstructure And Properties Of Extruded Al-Alloys For Crash Components In Cars
(Master thesis, 2014)The demand for lightweight materials in the transport industry is fuelling the research of high performing components. Extruded aluminium profiles intended for crash components are examined in this project. The objective ... -
A Solute Pinning Approach to Solute Drag in Multi-Component Solid Solution Alloys
(Journal article; Peer reviewed, 2014)The Cahn, Lücke and Stüwe theory remains the backbone of more complex analysis dealing with solute drag, however, the mathematical treatment is rather involved. A new approach based on solute pinning the boundary has ... -
Micro-fluidic flow cells for studies of electrochemical reactions
(Master thesis, 2014)Micro fluidic flow cells (MFFCs) are a relatively new technique for characterization of electrochemical reactions. This work includes both techniques for manufacturing the cells and electrochemical characterization of ... -
Development and characterizationof high solid solution Al-Mg alloysand an immiscible Al-Bi alloyprocessed by ECAP and annealing
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:149, Doctoral thesis, 2014)The thesis is based on five papers, covering two topics: papers 1-4 mainly focus on the development and characterization of high solid solution Al-Mg alloys by room temperature ECAP and annealing, their microstructure ... -
Preparation of electrocatalysts by reduction of precursors with sodium citrate
(Journal article; Peer reviewed, 2014)In this work synthesis of Pt/C catalysts by reduction of H2PtCl6 with sodium citrate has been investigated. The strong pH-dependence of citrate as a reducing and stabilizing agent has been explored, and an optimum pH range ... -
Investigation of Low Temperature Toughness and Crack Initiation In Welded Structural Steels
(Master thesis, 2014)A 420 MPa HSLA steel has been investigated. Instrumented Charpy impact tests and quasi-static CTOD tests have been performed on specimens of weld simulated Coarse Grained Heat Affected Zone (CGHAZ) and Intercritically ... -
In-situ Compession Testing of Nanosized Pillars
(Master thesis, 2014)Applications of nanomechanical testing methods have become increasingly important in all fields of material research. There is a significant interest in obtaining information about material features at small scales, in ... -
Understanding Anode Overpotential
(Journal article, 2014)In aluminium electrolysis cells the anodic process is associated with a substantial overpotential. Industrial carbon anodes are produced from a blend of coke materials, but the effect of coke type on anodic overpotential ... -
Improved catalytic activity of mixed platinum catalysts supported on various carbon nanomaterials
(Journal article; Peer reviewed, 2014)Electrocatalyst support affects not only catalytic activity of a catalyst, but also mass transportation and electron transfer in the catalyst layers of an electrode for proton exchange membrane fuel cells. Multi-dimensional ... -
Hydrophobic Coatings for Anti-Icing Applications
(Master thesis, 2014)The background for this Master s Thesis is to investigate materials and coatings for use in anti-icing applications. Icing is a problem in many different fields, from aeronautic transport, power lines, and wind turbines ... -
Position controlled Growth of GaAs/AlGaAs core-shell Nanowires - more uniform in their structural and optical Properties?
(Master thesis, 2014)Semiconducting nanowires (NWs), especially those with a direct band gap, could be promising building blocks in future optoelectronic devices. Position controlled, self catalyzed GaAs/AlGaAs core-shell NWs with an AlGaAs ... -
Nucleation of Primary Mg2Si in Al-Mg-Si Alloys
(Master thesis, 2014)Al-Mg2Si Metal Matrix Composites have the potential to replace the frequently used near- and hyper-eutectic Al-Si alloys. In the as-cast condition, these alloys can contain coarse dendritic primary Mg2Si particles which ...