Browsing Institutt for materialteknologi by Title
Now showing items 1992-2011 of 2513
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SiC production using SiO 2 and Cagglomerates
(Doctoral theses at NTNU;2017:180, Doctoral thesis, 2017)Due to the possible shortage of high-quality fossil carbon materials and charcoal for the Si industry, this study will focus on the possibility of using natural gas as the substitute of commercially scarce high quality ... -
Side reactions on two types of carbon conductive additives in ionic liquid-based electrolytes for high voltage Li-ion battery cathodes
(Master thesis, 2023)Litium-ionbatterier (LIBs) er et godt alternativ for energilagring i elektriske kjøretøy og stasjonær lagring, for eksempel sammen med solceller, i tillegg til å ha mange andre bruksområder. Selv om disse batteriene allerede ... -
Silica from diatom frustules as anode material for Li-ion batteries
(Journal article; Peer reviewed, 2019)In spite of its insulating nature, SiO2 may be utilized as active anode material for Li-ion batteries. Synthetic SiO2 will typically require sophisticated synthesis and/or activation procedures in order to obtain a ... -
Silica Fume Formation in Different Gas Atmospheres
(Peer reviewed; Journal article, 2023)Silica fume is an important byproduct from the silicon production process, with mainly concrete and refractory applications. In this work, the effect of different combustion gas atmospheres on the properties of silica fume ... -
Silicon and indium as secondary cathodes for the analysis of solid alumina and sapphire by slow-flow direct-current glow discharge mass spectrometry
(Peer reviewed; Journal article, 2022)We demonstrate and compare the capabilities of indium and silicon as secondary cathodes for the analysis of flat, solid alumina and sapphire matrices by direct current glow discharge mass spectrometry (dc-GDMS). The mask ... -
Silicon anodes for lithium-ion batteries produced from recovered kerf powders
(Journal article; Peer reviewed, 2019)Silicon kerf waste from a photovoltaic silicon production process is assessed as an anode material for application as a lithium ion battery anode. In contrast to previous studies, the Si-kerf is used as-produced, with no ... -
Silicon Carbide Formation Enhanced by In-Situ-Formed Silicon Nitride: An Approach to Capture Thermal Energy of CO-Rich Off-Gas Combustion
(Journal article; Peer reviewed, 2018)Carbothermic smelting of ores to produce metals or alloys in alternating current open/semiclosed and closed submerged arc furnaces, or in closed direct current furnaces, results in large volumes of CO-rich off-gas being ... -
Silicon carbide formation from methane and silicon monoxide
(Peer reviewed; Journal article, 2020)Silicon carbide (SiC) formation plays an important role during the production of elemental silicon. SiC forms through a high temperature reaction between silicon monoxide gas (SiO) and carbon. Currently, the carbon sources ... -
Silicon directional solidification Impurity segregation and defects
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:161, Doctoral thesis, 2014) -
Silicon for silicon nitride based products
(Master thesis, 2013)Previous studies have shown that the oxide layer on the surface of silicon particles can reduce the hydrogen evolution that comes from contacting silicon with water during slip casting, prior to nitridation. This study ... -
Silicon for silicon nitride based products
(Master thesis, 2014)Previous studies have investigated the effect of the oxide layer (Ovregård 2013) and iron content (Hem 2013) on the nitridation of silicon powders. This report will take a closer look into the growth mechanisms of different ... -
Silicon for silicon nitride based products
(Master thesis, 2013)Previous studies have shown that the oxide layer on the surface of silicon particles can reduce the hydrogen evolution that comes from contacting silicon with water during slip casting, prior to nitridation. This study ... -
Silicon for Solar Cells
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:140, Doctoral thesis, 2005)This thesis work consists of two parts, each with a different motivation. Part II is the main part and was partly conducted in industry, at ScanWafer ASA’s plant no.2 in Glomfjord. The large growth in the Photo Voltaic ... -
Silicon for the Chemical and Solar Industry XV
(Book, 2020) -
Silicon Nanoparticle Ensembles for Lithium-Ion Batteries Elucidated by Small-Angle Neutron Scattering
(Journal article; Peer reviewed, 2019)Silicon in the form of nanoparticles has attracted significant interest in the field of lithium-ion batteries due to the enormous capability of lithium intake. In the present work we demonstrate the characterization of ... -
Silicon nanowires grown-on-graphite as composite anodes for high-energy lithium ion batteries
(Master thesis, 2022)Silisium er et lovende anodematerial for fremtidige litium-ionbatterier med høy energitetthet, men det finnes utfordringer med lav elektrisk ledningsevne og store volumendringer av materialet under sykling. Silisium ... -
Silicon purification by acid leaching and slag refining techniques
(Doctoral theses at NTNU;2021:117, Doctoral thesis, 2021)Solar energy has become the most popular and fastest-growing renewable energy resource worldwide. However, it still requires the current solar-grade silicon (SoG-Si, purity 99.9999%) production with a larger manufacturing ... -
SILICON PURIFICATION THROUGH MAGNESIUM ADDITION AND ACID LEACHING
(Chapter, 2016)Silicon is the dominant material in photovoltaic devices and with regard to the PV market growth, the demand for solar grade silicon feedstock is expected to be high in the future. Although solar silicon is currently ... -
Silicon refining through alloying by calcium and magnesium, controlled solidification and leaching
(Bachelor thesis, 2022)I denne bacheloroppgaven var målet å bedre forstå hvordan avkjølingshastighet påvirker raffinering av silisium, når legeringssystemet Si-Ca-Mg brukes i forbindelse med utluting med syre. Mikrostruktur og effektiv fjerning ... -
A simple method enabling efficient quantitative analysis of the Portevin–Le Chatelier band characteristics
(Peer reviewed; Journal article, 2022)Localized deformation bands are often observed in materials exhibiting the Portevin–Le Chatelier (PLC) effect. However, efficient quantitative analysis of PLC bands remains challenging. A novel method is thus proposed in ...