Blar i Institutt for materialteknologi på tittel
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Kimdanning av sprøbrudd i simulert grovkornet HAZ i et arktisk stål
(Master thesis, 2012)Det har blitt estimert at 30 % av verdensuoppdagede gassreserver og 13 % av verdens uoppdagede oljereserver ligger i de polare områdene i nord. Man trenger derfor materialer som tåler lave temperaturer for å hente opp denne ... -
Kinetic Investigations of SiMn Slags From Different Mn Sources
(Journal article; Peer reviewed, 2018)The kinetics of MnO and SiO2 reduction were investigated for Silicomanganese (SiMn) slags using a Thermogravimetric analysis (TGA) between 1773 K and 1923 K (1500 °C and 1650 °C) under CO atmospheric pressure. The charge ... -
Kinetic modeling of the reaction rate for quartz and carbon pellet
(Journal article; Peer reviewed, 2018)Kinetic modeling of quartz and carbon pellet at temperatures of 1898 K, 1923 K, and 1948 K (1625 °C, 1650 °C, and 1675 °C) was investigated in this study. The carbon materials used were charcoal, coke, coal, and preheated ... -
Kinetic Study of SiO2 + SiC Reaction in Silicon Production
(Master thesis, 2013)A number of researches related to kinetics of SiO2 + SiC reaction in the silicon production are limited and there is a gap between the real kinetics and mechanism of SiO2 + SiC reaction and people?s knowledge of that ... -
Kinetic study of vacuum evaporation of elements from ternary melts; case of dilute solution of P in Si-Al melts
(Journal article; Peer reviewed, 2019)This research is devoted to study phosphorus removal from Si-Al alloys by vacuum refining of the ternary system of dilute solutions of P in Si-20 wt%Al. The experiments were carried out in an induction furnace and after ... -
Kinetics Analysis of Steam Reforming of Methane on Sponge Iron
(Peer reviewed; Journal article, 2022)The kinetics of steam reforming of methane catalyzed by sponge iron was studied at temperatures between 875°C and 1050°C. Results shows that sponge iron acts as a catalyst and methane conversion is increased in higher ... -
Kinetics and Mechanism of Phase Transformations from Quartz to Cristobalite
(Master thesis, 2016)The largely debated silica polymorphism has in this thesis been investigated for the transformation from β-quartz to β-cristobalite. It is done as a step in understanding and improve the furnace operations of the silicon ... -
Kinetics during hydrothermal synthesis of nanosized KxNa1-xNbO3
(Journal article, 2018)Hydrothermal synthesis is an efficient method of making nanosized functional oxide materials, and it has also been used to synthesize KxNa1−xNbO3 solid solution, a promising lead-free piezoelectric material. However, the ... -
Kinetics of Alumina Carbochlorination
(Master thesis, 2020)Kinetikken av varierende kvaliteter av alumina, Al2O3, har blitt undersøkt i reaksjon med CO og Cl2. En reaktor har blitt designet og produsert av denne grunn. Temperatur og gasstrøm har blitt variert for smelter grade ... -
Kinetics of hydrogen absorption and desorption in titanium
(Journal article; Peer reviewed, 2017)Titanium is reactive toward hydrogen forming metal hydride which has a potential application in energy storage and conversion. Titanium hydride has been widely studied for hydrogen storage, thermal storage, and battery ... -
Kinetics of Magnesiothermic Reduction of Natural Quartz
(Peer reviewed; Journal article, 2022)In this work, the kinetics of natural quartz reduction by Mg to produce either Si or Mg2Si was studied through quantitative phase analysis. Reduction reaction experiments were performed at various temperatures, reaction ... -
Kinetics of silicon nitride coatings degradation and its influence on liquid infiltration in PV silicon crystallization processes
(Peer reviewed; Journal article, 2021)Safe implementation of reusable crucibles in the silicon PV industry requires a thorough understanding of the reactions in the system to avoid liquid infiltration and crucible failure at high temperatures. Typically, an ... -
Kinetics of Slag Reduction in Silicomanganese Production
(Peer reviewed; Journal article, 2020)In this study, the reduction of three silicomanganese charges prepared from industrial raw materials was investigated under isothermal conditions between 1783 K and 1933 K (1510 °C and 1660 °C). The main reactions examined ... -
Kinetics of the leaching of alumina-containing slag for alumina recovery
(Chapter, 2019)The leaching kinetics of an alumina-containing slag produced from the smelting-reduction of low-grade bauxite, which contained a significant amount of iron and low levels of SiO2 and TiO2, is studied. The leaching rates ... -
Kinetics of the reaction between quartz and silicon carbide in different gas atmospheres
(Master thesis, 2015)This thesis examined the influence of different gas species in the kinetics of SiO2+SiC reaction. The quartz and silicon carbide were crushed to < 38µm, uniformly mixed together with weight ratio of 3:1 and pelletized into ... -
Kinetics Study on the Hydrogen Reduction of Bauxite Residue-Calcite Sintered Pellets at Elevated Temperature
(Peer reviewed; Journal article, 2023)In this study, the isothermal reduction of bauxite residue-calcite sintered pellets by hydrogen at elevated temperatures and different gas flow rates was investigated. A thermogravimetric technique was applied to study the ... -
Kirkwood-Buff integrals from molecular simulation
(Journal article; Peer reviewed, 2019)The Kirkwood-Buff (KB) theory provides a rigorous framework to predict thermodynamic properties of isotropic liquids from the microscopic structure. Several thermodynamic quantities relate to KB integrals, such as partial ... -
Kirkwood–Buff Integrals Using Molecular Simulation: Estimation of Surface Effects
(Peer reviewed; Journal article, 2020)Kirkwood–Buff (KB) integrals provide a connection between microscopic properties and thermodynamic properties of multicomponent fluids. The estimation of KB integrals using molecular simulations of finite systems requires ... -
Kirkwood–Buff integrals: From fluctuations in finite volumes to the thermodynamic limit
(Peer reviewed; Journal article, 2022)The Kirkwood–Buff theory is a cornerstone of the statistical mechanics of liquids and solutions. It relates volume integrals over the radial distribution function, so-called Kirkwood–Buff integrals (KBIs), to particle ... -
Kompleksdannere under våtkjemisk syntese av oksider
(Master thesis, 2013)Effekten av ulike komplekseringsmidler i den modifiserte Pechini-metoden har blitt studert ved å benytte malon-, eple- og vinsyre under syntesen CuAlO2 med delafossittstruktur og eple- og vinsyre for NaLa(WO4)(MoO4) med ...