Blar i Institutt for materialteknologi på tittel
Viser treff 28-47 av 2562
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A New Electrolyte for the Aluminum Ion Battery
(Master thesis, 2024)Det pågår for tiden et kappløp om å finne nye og sårt tiltrengte batteriteknologier for å redusere det høye og stadig økende forbruket av litiumionebatterier. Aluminiumionbatteriet, og mer spesifikt aluminiumkarbonbatteriet, ... -
A new material for oxygen-permeable membranes
(Master thesis, 2017)In this study, hexagonal YMnO3 doped with 15% Ti was used in the preparation of an asymmetric oxygen permeable membrane. Several different methods for the fabrication of the asymmetric membrane have been used, and the ... -
A New Nano Insulation Material for Applications in Zero Emission Buildings
(Master thesis, 2013)New materials with extremely low thermal conductivities are interesting because they can have architectonic, technical and possibly economic benefits in buildings. A new nano insulation material (NIM) is under development ... -
A Photomagnetic Sponge: High-Temperature Light-Induced Ferrimagnet Controlled by Water Sorption
(Journal article; Peer reviewed, 2018)“Converting” light energy to magnetization is the attribute of molecule-based compounds called photomagnets and is inaccessible for conventional magnetic solids. The design and synthesis of such compounds, however, is a ... -
A physically-based constitutive model applied to AA6082 aluminium alloy at large strains, high strain rates and elevated temperatures
(Journal article; Peer reviewed, 2016)This paper presents a physically-based constitutive model applied to an AA6082 aluminium alloy subjected to large strains, high strain rates and elevated temperatures. The model accounts for thermo-elasticity, thermo-vis ... -
A process model for friction stir welding of age hardening aluminium alloys
(Dr. ingeniøravhandling, 0809-103X; 1999:76, Doctoral thesis, 1999) -
A semianalytical method for simulating mass transport at channel electrodes
(Journal article; Peer reviewed, 2015)A method for simulating electrode reactions in channel flow is developed and efficiently implemented in the symbolic algebra program Maple™. The steady-state convective diffusion equation for fully developed 2-D laminar ... -
A simplified three-phase model of equiaxed solidification for the prediction of microstructure and macrosegregation in castings
(Journal article, 2018)Macrosegregation is a result of the interplay of various transport mechanisms, including natural convection, solidification shrinkage, and grain motion. Experimental observations also indicate the impact of grain morphology, ... -
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 ... -
A Stability Study of Substoichiometric Silicon Nitride Nanoparticles as Active Anode Material for Li-ion Batteries
(Master thesis, 2019)De fremragende elektrokjemiske egenskapene til understøkiometrisk silisium nitrid (SiNx) har gjort dette material til en potensiell kandidat for neste generasjons Li-ion batteri aktive anode materiale. Den først litsieringen ... -
A study of anode baking gas composition
(Journal article; Peer reviewed, 2018)A method has been developed to measure gas composition inside the pit in open anode baking furnaces. The gas composition can be used to understand attack on and degradation of the refractory lining, baking behavior and ... -
A Study of Localized Corrosion in Supermartensitic Stainless Steel Weldments
(Dr.ingeniøravhandling, 0809-103X; 2002:72, Doctoral thesis, 2002)This doctoral thesis is concerned with pitting corrosion in super martensitic stainless steel (SMSS) weldments in slightly sour service. Thee main objective with the present thesis has been to find out why pitting corrosion ... -
A study on commercial SiC-powders sintered by hot pressing
(Master thesis, 2016)Hot-pressing of a commercial silicon carbide powder was performed with 0, 5 and 10wt% added hexagonal boron nitride. Density, microstructural and compositional development has been studied ex situ with different holding ... -
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 ... -
A TEM Study of Weakly Overaged Precipitates in AA 6082
(Master thesis, 2016)New models for modeling the material properties for aluminium alloys that can take into consideration the geometry of the needle shaped precipitates, that can be found in 6xxx alloys are being developed. The background for ... -
A thermodynamic assessment of the Nd-C system
(Journal article; Peer reviewed, 2015)The Nd–C binary system has been assessed based on the experimental investigation, thermodynamic calculations and the literature survey. The intermediate compounds Nd2C3 and βNdC2 (high-temperature form of NdC2 phase) were ... -
A Thermodynamic Study on the Effect of Solute on the Nucleation Driving Force, Solid?Liquid Interfacial Energy, and Grain Refinement of Al Alloys
(Journal article, 2018)Chemical composition is known to have significant effects on the grain refinement behavior of inoculated Al alloys during solidification. In this study, the influences of solute contents on the thermodynamic nucleation ... -
A van der Waals Density Functional Study of MoO3 and Its Oxygen Vacancies
(Journal article; Peer reviewed, 2016)The electronic structure of layered molybdenum trioxide MoO3 is highly sensitive to changes in oxygen stoichiometry as Mo6+ has an empty 4d shell. Applications of MoO3 are responsive to small changes in vacancy concentration, ... -
A XANES Study of Sulfur Speciation and Reactivity in Cokes for Anodes Used in Aluminum Production
(Journal article; Peer reviewed, 2018)Availability of anode raw materials in the growing aluminum industry results in a wider range of petroleum cokes being used to produce carbon anodes. The boundary between anode grade cokes and what previously was considered ... -
Ab-initio study of atomic structure and mechanical behaviour of Al / Fe intermetallic interfaces
(Journal article; Peer reviewed, 2020)First-principles virtual tensile and shear test calculations have been performed to Al(0 0 )//-AlFeSi(0 0 1) and Al(0 4)//Fe4Al13(1 0 ) interfaces by the ab initio pseudo potential density functional theory method. Work ...