Browsing Institutt for materialteknologi by Title
Now showing items 1991-2010 of 2559
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Road-map for gas in the Norwegian metallurgical industry: greater value creation and reduced emissions
(Research report, 2017)In order to increase the use of gas in metal production, we will need to develop new – and to further develop existing – gas-based technologies, which will need to be adopted on an industrial scale. In order to provide a ... -
A robust algorithm for rate-independent crystal plasticity
(Peer reviewed; Journal article, 2022)A new stable return-mapping algorithm enables crystal-plasticity solutions by using a regularized yield surface with very large exponents, for which the rate-independent limit of the Schmid assumption in practice is reached. ... -
A Robust Image Processing Algorithm for Optical-Based Stress–Strain Curve Corrections after Necking
(Peer reviewed; Journal article, 2021)To determine the stress–strain curve of a ductile material up to the fracture from a tensile test, the necking contour is measured by an optical measurement technique. The radius of the minimal cross-sectional area and the ... -
Role of aluminium hydrides in localised corrosion of aluminium revealed by operando Raman spectroscopy
(Peer reviewed; Journal article, 2023)Filiform corrosion (FFC) is characteristic of metals such as aluminium and magnesium, usually takes place on coated metals, and spreads from coating defects in the form of filaments with a width on the order of 100 μm. In ... -
The Role of Boron in Low Copper Spheroidal Graphite Irons
(Peer reviewed; Journal article, 2023)The effects of boron at concentrations ranging from 5 to 525 ppm in low copper spheroidal graphite iron (SGI) has been studied. At 130 to 140 ppm, no particular effect of boron was observed on the size distributions, number ... -
Role of cementite morphology on corrosion layer formation of high-strength carbon steels in sweet and sour environments
(Peer reviewed; Journal article, 2023)The effect of cementite morphology on the corrosion layer formation of four high-strength carbon steels was studied in an aqueous solution containing CO2 and CO2/H2S. The linear polarization resistance and weight loss data ... -
Role of Filler Content and Morphology in LLZO/PEO Membranes
(Journal article; Peer reviewed, 2021) -
The role of grain boundary plane in slip transfer during deformation of magnesium alloys
(Peer reviewed; Journal article, 2022)Slip transfer across grain boundaries (GBs) is an important mechanism for HCP metals to accommodate intergranular deformation incompatibility. In this work, an in-situ SEM/EBSD study was conducted to study basal-slip-induced ... -
Role of Lone Pair Cations in Ferroelectric Tungsten Bronzes
(Journal article; Peer reviewed, 2017)The role of lone pair cations in tetragonal tungsten bronze (TTB) ferroelectrics has so far not been addressed in detail despite the importance of lone pairs for the polarization mechanism in the prototype ferroelectric ... -
Role of molybdenum in corrosion of iron-based alloys in contact with hydrogen sulfide containing solution.
(Journal article; Peer reviewed, 2017)A sample iron molybdenum alloy with 3.4 wt% (2 at%) molybdenum, and pure iron, are exposed to hydrogen sulfide saturated saline solution for up to 56 days. In addition, their behavior under anodic polarization in the same ... -
Role of Pitting in the Formation of Potholes in Carbon Cathodes - A Review
(Journal article, 2016) -
The role of silicon nitride crucible materials on silicon ingots contamination
(Master thesis, 2017)This work focuses on the characterisation of the solid diffusion mechanism of iron and titanium impurities in a silicon nitride crucible, as a substitute for silica crucibles currently used for solar cells production. This ... -
Room temperature mechanical properties of A356 alloy with Ni additions from 0.5 Wt to 2 Wt%
(Journal article; Peer reviewed, 2018)In recent years, the influence of Ni on high-temperature mechanical properties of casting Al alloys has been extensively examined in the literature. In the present study, room temperature mechanical properties of an A356 ... -
Room-temperature dissolution behaviour of barium titanate - effects of flowing vs. static soaking conditions
(Master thesis, 2023)I denne avhandlingen har løselighetsevnen til sintrede bariumtitanatprøver i vandige løsninger blitt undersøkt for å evaluere bariumtitanats potensiale som et mulig biomateriale. Bariumtitanat er et piezoelektrisk keram, ... -
SAG-FW Welding of C90 Riser Steel Connectors
(Master thesis, 2012)Weld simulations have been conducted on a C90 quenched tempered steel used in offshore riser systems, in order to investigate the possibility of introducing an effective solid state weld procedure. As a secondary objective, ... -
Sammenligning av kornfinere og elektromagnetiske støpeteknikker for å vurdere materielle ytelser i Al-legeringer
(Bachelor thesis, 2023)Miktrostrukturen til aluminium kan endres ved å tilsette kornfinere, justere størkningsraten og benytte elektromagnetisk røring. Ren kommersiell aluminium (1073) og ren aluminium (99.9999\%) aluminium ble støpt med og uten ... -
Sammensetning, struktur og variasjon av tappeslagg fra silisium produksjon
(Bachelor thesis, 2024)Slagget som dannes i ovnen er et biprodukt av silisiummetallproduksjonen og betraktes som «avfall». Analysen av tappeslagget kan gi verdifull innsikt i de pågående prosessene i ovnen. Slagget består hovedsakelig av urenheter ... -
Sampling Procedure, Characterization, and Quantitative Analyses of Industrial Aluminum White Dross
(Peer reviewed; Journal article, 2022)Up to 10% of all metallic aluminum (Al) produced is lost due to dross generation during production. It also causes an environmental problem due to hazardous waste generation following treatment, as well as toxic gas ... -
Sandblasting effect on performance and durability of Ti based IrO2 –Ta2O5 anode in acidic solutions
(Journal article; Peer reviewed, 2018)The effect of applying sandblasting during pretreatment while preparing titanium based IrO2 – Ta2O5 anodes by the conventional method was investigated. It was observed that sandblasting influences the surface morphology ... -
Scale-up of Sonochemical Synthesis of Nanocatalysts for Fuel Cells and Electrolyzers
(Master thesis, 2023)Hensikten med dette arbeidet var å oppskalere en sonokjemisk synteserute ved bruk av en 346 kHz ultralyd platetransduser for å produsere Pt/XC72 med reproduserbare egenskaper, og høy katalytisk aktivitet for oksygenreduk ...