Blar i Institutt for materialteknologi på utgivelsesdato
Viser treff 1061-1080 av 2540
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Novel process of coating Al on graphene involving organic aluminum accompanying microstructure evolution
(Journal article; Peer reviewed, 2018)A novel chemical reduction of organic aluminum for coating Al on the graphene surface is proposed. During the process, Al powder reacted with the (C2H5)2Br solution to produce (C2H5)3Al solution, followed by gradual ... -
Electrochemical analysis of aluminium alloy 5182 and 6016 with different surface treatments in 0.1 M NaCl electrolyte
(Master thesis, 2018)Replacing steel parts in cars with aluminium (Al) can reduce the weight by up to 50 % and contribute to decreased CO2 emissions. Aluminium is also easily and inexpensively recyclable. A lot of research is therefore conducted ... -
Thermochemical Aspects of Boron and Phosphorus Distribution Between Silicon and BaO-SiO2 and CaO-BaO-SiO2 slags
(Journal article; Peer reviewed, 2018)In the production of solar grade silicon by metallurgical route the distribution of B and P between slags and liquid silicon is the most important key issue. The equilibrium and thermochemistry of reactions between liquid ... -
Black Silicon Structures
(Master thesis, 2018)Nanostructuring on the surface of silicon can make high efficient solar cells possible by lowering the reflection. Silicon wafers were successfully wet chemically etched with metal-assistance, to create a black silicon ... -
Heat-Treatable Aluminum Alloys: Three-Point Bending
(Chapter, 2018) -
Gradient in defect density of ZnO nanorods grown by cathodic delamination, a corrosion process, leads to end-specific luminescence
(Journal article; Peer reviewed, 2018)ZnO nanorods were grown on a zinc substrate via cathodic delamination of a polymer coating, a tailored corrosion process, at room temperature. A comparison between in situ Raman spectra and post mortem cross sectional ... -
The influence of graphitization on the thermal conductivity of catalyst layers and temperature gradients in proton exchange membrane fuel cells
(Journal article; Peer reviewed, 2018)As the proton exchange membrane fuel cell (PEMFC) has improved its performance and power density, the efficiency has remained unchanged. With around half the reaction enthalpy released as heat, thermal gradients grow. To ... -
Slip Casting of Solid State SiC
(Master thesis, 2018)A study of the parameters influencing the rheology of silicon carbide slurries containing boron carbide and carbon sintering additives was done. Carbon black and Novolac were used as carbon additives and their effect on ... -
Equilibrium of [Si]/(SiO2) in Carbothermic Selective Reduction of Titanium Concentrate Ore for the Preparation of Titanium Oxycarbide
(Journal article; Peer reviewed, 2018)Carbothermic selective reduction of titanium concentrate ore for the preparation of titanium oxycarbide was presented and SiO2 was found to be partly reduced during the process. The equilibrium relationship between Si ... -
All-oxide thermoelectric module with in situ formed non-rectifying complex p-p-n junction and transverse thermoelectric effect
(Journal article; Peer reviewed, 2018)All-oxide thermoelectric modules for energy harvesting are attractive due to high temperature stability, low cost, and the potential to use non-scarce and non-toxic elements. Thermoelectric modules are mostly fabricated ... -
Optimizing carbon coating of silica from diatom frustules as a high performance, low cost and environmentally friendly anode material for lithium ion batteries
(Master thesis, 2018)The goal of this work was to optimize the carbon coating of silica from diatom frustules as a high performance, low cost and environmentally friendly anode material for lithium ion batteries. This was done by investigating ... -
Tiltak mot velt og utforkjøring med tunge kjøretøy
(Research report, 2018) -
Autopsy of refractory lining in anode kilns with open and closed design
(Journal article, 2018)Aluminosilicate refractory lining constitutes a major part of anode baking kilns, and during anode baking the lining is exposed to harsh conditions which limits the lifetime. Here, autopsies of refractory linings from both ... -
Mikrostrukturutvikling i superdupleks rustfritt stål og effekten av prøvepreparering på identifisering og kvantifisering av sigmafase gjennom EBSD-karakterisering
(Master thesis, 2018)Superdupleks rustfritt stål benyttes ofte i konstruksjoner lokalisert i korrosive miljø på grunn av høy mekanisk styrke og god korrosjonsmotstand. På grunn av et høyt innhold av legeringselementer er stålet utsatt for ... -
The real area of nanoporous catalytic surfaces of gold and palladium in aqueous solutions
(Journal article; Peer reviewed, 2018)The determination of the real, or active, area of a catalytic surface is a key requirement to understand or quantify parameters related to its electrochemical behavior. There are several experimental methods available, but ... -
Guidelines for establishing an etching procedure for dislocation density measurements on multicrystalline silicon samples
(Journal article; Peer reviewed, 2018)With multicrystalline silicon becoming the main material used for photovoltaic applications and dislocations being one of the main material limitations to better solar cell efficiency, etch pit density measurements are ... -
Recombination activity of grain boundaries in high-performance multicrystalline Si during solar cell processing
(Journal article; Peer reviewed, 2018)In this work, we applied internal quantum efficiency mapping to study the recombination activity of grain boundaries in High Performance Multicrystalline Silicon under different processing conditions. Wafers were divided ... -
Characteristics of TI6AL4V powders recycled from turnings via the HDH technique
(Journal article; Peer reviewed, 2018)The objective of this research is for Ti6Al4V alloy turnings, generated during the machining of implants, to produce powders for the fabrication of Ti base coating via the cold spray method. In order to decrease the cost ... -
PFC evolution characteristics during aluminium and rare earth electrolysis
(Journal article; Peer reviewed, 2018)In addition to aluminium electrolysis, the electrolysis of rare earth (RE) metals from fluoride melts is a significant source of perfluorocarbon (PFC) emissions to the atmosphere. These processes have many similarities, ... -
Through thickness variations of deformation texture in round profile extrusions of 6063-type aluminium alloy: experiments, FEM and crystal plasticity modelling
(Journal article; Peer reviewed, 2018)The deformation texture and its through-thickness heterogeneity for an extruded round profile are experimentally measured by the electron back-scatter diffraction technique (EBSD), and numerically modelled by coupling FEM ...