Blar i Institutt for materialteknologi på utgivelsesdato
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DSC analyses of static and dynamic precipitation of an Al-Mg-Si-Cu aluminum alloy
(Journal article; Peer reviewed, 2015)In the present investigation, both static and dynamic precipitations of an Al–Mg–Si–Cu aluminum alloy after solid-solution treatment (SST) were comparatively analyzed using differential scanning calorimetry (DSC). Dynamic ... -
Effect of carbon content and annealing atmosphere on phase purity and morphology of Li2MnSiO4 synthesized by a PVA assisted sol–gel method
(Journal article; Peer reviewed, 2015)Lithium transition metal orthosilicates of the general formula Li2MSiO4 have gained great interest as potential positive electrode material for Li-ion batteries. This study reports the dependence of phase purity and ... -
Effect of Copper and Zinc on Corrosion Behaviour and Mechanical Properties in 6082-Alloys
(Master thesis, 2015)Extruded Al-Mg-Si alloys with Cu additions are frequently used in heavy loaded structures, offshore installations and the transportation industry. In contrast to the positive effect Cu has on mechanical properties, the ... -
Boron removal from silicon by steam and hydrogen
(Doctoral thesis at NTNU;2015:268, Doctoral thesis, 2015)Solar cells are among the most promising technologies for development of sustainable power generation in terms of environmental impact and resource availability, and crystalline silicon cells dominate the present market ... -
The Effect of Refined Prior β-grains on the Final Microstructure and Strain Response in Ti-6Al-4V produced by Wire-Fed Plasma Deposition - Investigated by combined EBSD and In-Situ Tensile Experiments
(Master thesis, 2015)In this master thesis, the focus has been on a Ti-6Al-4V specimen produced by Norsk Titanium s patented wire-fed plasma deposition technique, under conditions promoting the break up of the traditional large columnar β-grains ... -
Wavelength and orientation dependent capture of light by diatom frustule nanostructures
(Peer reviewed; Journal article, 2015)The ecological success of diatoms is emphasized by regular blooms of many different species in all aquatic systems, but the reason behind their success is not fully understood. A special feature of the diatom cell is ... -
Amine-functionalized magnetic nanocomposite particles for efficient immobilization of lipase: effects of functional molecule size on properties of the immobilized lipase
(Journal article; Peer reviewed, 2015)A cost-effective design of reusable enzyme-functionalized particles with better catalytic activity is of great scientific interest due to their applications in a wide range of catalytic reactions in several industrial ... -
Effect of Microstructure on the Performance of Corrosion Resistant Alloys
(Master thesis, 2015)Corrosion by pitting in aluminum alloys is a very complex process that can be affected by various factors such as chemical composition and microstructure of the alloys. The electrochemistry and distribution of second phases ... -
Evolution in microstructure and properties during non-isothermal annealing of a cold-rolled Al-Mn-Fe-Si alloy with different microchemistry states
(Journal article, 2015)The softening behaviour during non-isothermal annealing of a cold-rolled Al–Mn–Fe–Si model alloy was studied as a function of the state of microchemistry, in terms of the solute level of Mn, size and spatial distribution ... -
Study of a modified AA2618 wrought aluminum alloy to enhance thermal resistance - For automotive applications
(Master thesis, 2015)Aluminum alloys exhibit a huge potential due to their strength-to-weight ratio and therefore play a key role as regards achieving the desired mass reduction in the automotive field. Their main limit is the loss of strength ... -
Alternating Current Corrosion of Steel in Seawater
(Master thesis, 2015)A challenge regarding the transportation of oil and gas in pipelines subsea is to keep the temperature high enough to avoid formation of wax and hydrates, which eventually will stop the flow. In 2000, Nexans introduced a ... -
In-vitro Study of the Material Properties of PUR Subcutaneous Venous Access Ports Exposed to Chemotherapy Drugs and Whole Blood
(Master thesis, 2015)Central Venous Catheters (CVCs) are used to provide safe administration of chemotherapeutic drugs during cancer treatment. This study focused on how the treatment influences the material properties of one type of CVC, the ... -
Thermal evolution of the crystal structure of proton conducting BaCe0.8Y0.2O3-δ from high-resolution neutron diffraction in dry and humid atmosphere
(Peer reviewed; Journal article, 2015)The crystal structure of the proton conducting perovskite BaCe0.8Y0.2O3−δ (BCY20) has been studied via high-resolution in situ neutron diffraction performed in controlled dry and humid (heavy water) oxygen flow. Two phase ... -
In-situ structural investigations of ferroelasticity in soft and hard rhombohedral and tetragonal PZT
(Journal article; Peer reviewed, 2015-10-28)Despite the technological importance of hard and soft PZT, Pb(Zr,Ti)O3, ceramics, the mechanisms of ferroelectric hardening and softening remain widely discussed in the literature. The hardening and softening phenomena ... -
Liquid feed flame spray pyrolysis as alternative synthesis for electrochemically active nanosized Li2MnSiO4
(Journal article; Peer reviewed, 2016)A novel liquid-feed flame spray pyrolysis synthesis with reducing post-heat treatment yielding highly phase pure nano-sized and carbon-coated Li2MnSiO4 is reported. In contrast to most reported Li2MnSiO4 synthesis routes, ... -
Screw Extrusion from various Binary Al-XMg Feed Materials - Effects of Heat Treatment on Microstructure
(Master thesis, 2016)Three direct chill (DC) cast aluminium-magnesium (Al-Mg) alloys, with 5, 8, and 10 wt% magnesium, have been used as base materials. These base materials were either rapidly solidified by melt spinning, or granulated by ... -
Iridium-based Electrocatalysts for the Oxygen Evolution Reaction
(Doctoral thesis at NTNU;2016:226, Doctoral thesis, 2016)English version: This thesis covers several topics related to the anodic catalyst for the oxygen evolution reaction (OER) in polymer electrolyte membrane (PEM) water electrolysis. Water electrolysis is considered one ... -
Intergranular Corrosion of Extruded AlMgSi(Cu,Zn) Alloys
(Master thesis, 2016)In general, the 6xxx series alloys (AlMgSi) are considered to be resistant to intergranular corrosion (IGC) in marine environments. However, the addition of copper to increase peak hardness has proven to increase the IGC ... -
Phosphorus modification in Al-Si hypereutectic alloys
(Master thesis, 2016)We wanted to know how the primary silicon is influeced by the modification with phoshorus. Some analysis with light microscope were done in order to see how the particles change with the phosphorus modification. Also the ... -
Press Form Hardening of Aluminium Alloys 7021 and 6082. A Feasibility Study.
(Master thesis, 2016)Aluminium alloys 6082.25 and 7021.50 were evaluated and compared as potential base materials for processing by press form hardening. Both extruded profiles and rolled sheets were assessed, however the rolled 7021 material ...