Institutt for materialteknologi: Nye registreringer
Viser treff 41-60 av 2562
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Effect of Secondary Austenite on Precipitation of Intermetallic Phases in Super Duplex 25Cr
(Bachelor thesis, 2024)Super duplex rustfritt stål (SDSS) er en høy-legert type stål med et minimum Cr-innhold på 25 wt%. I kombinasjon med andre legeringselementer som Mo, medfører det at SDSS har en utmerket god korrosjonsmotstand. Materialet ... -
Silicon Anodes and Ionic Liquid Electrolytes for Li-ion Batteries
(Doctoral theses at NTNU;2024:263, Doctoral thesis, 2024)Battery technology is a central part of our future renewables-based energy system, to balance the intermittent production of electrical energy from for example solar cells or wind turbines. Furthermore, batteries have ... -
Exploring the Application of Filter Dust from SiC Production in Concrete
(Bachelor thesis, 2024)Silisiumkarbid er hovedsakelig produsert gjennom Acheson prosessen. Den inkluderer å varme opp petroleumskoks, silika sand og karbon til temperaturer høyre enn 2000°C. De høye temperaturene bidrar til å frigjøre avgasser ... -
Using Rotating Permanent Magnets for Pumping Aluminium in a Liquid Metal Loop
(Bachelor thesis, 2024)Aluminiumindustrien er avhengig av å pumpe flytende metall under resirkuleringsprosesser. På grunn av de høye korrosive egenskapene til flytende aluminium, må de eksisterende metodene for pumping unngå kontakt mellom ... -
Eksperimentell bestemmelse av strømeffektivitet og produksjonsrater i kloralkalielektrolyse
(Bachelor thesis, 2024)Prosjektet tar for seg å undersøke elektrolysestrømeffektivitet, energiforbruk og produksjonsrater i kloralkalielektrolyse. Kunnskap om massebalansen for produserte mengder natriumhydroksid, klorgass og hydrogengass er ... -
Surface pretreatments and filiform corrosion mechanism of model recycled aluminium alloys
(Doctoral theses at NTNU;2024:224, Doctoral thesis, 2024)Filiform corrosion (FFC) is a type of localized corrosion process that affects metals such as aluminium, magnesium and steel under certain environmental circumstances. FFC often occurs in environments combining marine and ... -
Silane Gas Production Through Hydrolysis of Magnesium Silicide by Hydrochloric Acid
(Peer reviewed; Journal article, 2024)Monosilane (SiH4) is a common precursor for the production of high-purity silicon for solar PV applications. As an alternative to carbothermic reduction of silica to produce metallurgical grade silicon with subsequent ... -
Effekt av glassflak på korrosjonsbeskyttende egenskaper til epoxymaling
(Bachelor thesis, 2024)Formålet med oppgaven er å undersøke hvordan tilsetning av glassflak påvirker korrosjonsbeskyttende egenskaper til epoxymaling. Glassflak er ugjennomtrengelige partikler og tvinger vann, oksygen og ioner fra miljøet til å ... -
Addressing Analytical Challenges in Global Metabolomics: Application of Isotope-labeled Internal Standards for Quality Assurance
(Bachelor thesis, 2024)Global metabolomikk er en omfattende analytisk tilnærming som er designet for å identifisere alle metabolitter i en biologiske prøve. Metoden er verdifull i klinisk diagnostikk, men den manglende spesifisiteten er en ... -
Enabling the use of lithium bis(trifluoromethanesulfonyl)imide as electrolyte salt for Li-ion batteries based on silicon anodes and Li(Ni0.4Co0.4Mn0.2)O2 cathodes by salt additives
(Journal article; Peer reviewed, 2024)Lithium bis(trifluoromethanesulfonyl)imide (LiFSI) is a promising alternative salt for Li-ion batteries. Unlike the conventional LiPF6, it is not prone to HF formation, and thus resistant to moisture. However, for cell ... -
A Comparative Study of Different CFD Codes for Fluidized Beds
(Journal article; Peer reviewed, 2024)Fluidized beds are pivotal in the process industry and chemical engineering, with Computational Fluid Dynamics (CFD) playing a crucial role in their design and optimization. Challenges in CFD modeling stem from the scarcity ... -
Process Phenomena in Furnaces Producing Ferrosilicon Alloys
(Doctoral theses at NTNU;2024:199, Doctoral thesis, 2024)The production of ferrosilicon alloys is carried out in electric arc furnaces through carbothermic reduction. The reduction process involves the use of quartz, iron containing raw materials, and carbon reductants which are ... -
Interphase Engineering of LiNi0.88Mn0.06Co0.06O2 Cathodes Using Octadecyl Phosphonic Acid Coupling Agents
(Journal article; Peer reviewed, 2023)Ni-rich layered oxides are proven high-energy cathode materials for Li-ion batteries, but their characteristic short cycle life remains a challenge for implementation on a wider scale. The surface reactivity of Ni-rich ... -
Iron and alumina recovery from bauxite residue through hydrogen reduction
(Doctoral theses at NTNU;2024:183, Doctoral thesis, 2024)The study primarily centers on agglomerating bauxite residue with calcite pellets and reducing in the presence of hydrogen. This process aims to reduce iron oxide complexes while simultaneously forming leachable calcium ... -
An operando 3D optical microscopy study on the Li metal anode formation in anode-less solid-state batteries
(Master thesis, 2024)Faststoffbatterier med metalliske litiumanoder har et stort potensiale til å betydelig øke ders energitetthet og har nylig fått mye oppmerksomhet. Komplekse og kostbare produksjonsprosesser hindrer imidlertid, for øyeblikket, ... -
Comparative Study of Hydrogen Reduction of Bauxite Residue-Calcium Sintered and Self-Hardened Pellets Followed by Magnetic Separation for Iron Recovery
(Journal article; Peer reviewed, 2023)To minimize the carbon footprint in the industrial valourization of bauxite residue, hydrogen was used as a reducing agent. The current study experimentally investigated hydrogen reduction of bauxite residue-CaO sintered ... -
Bulk Resistivity of Materials in the Si/FeSi Furnace
(Journal article; Peer reviewed, 2023)The formation of silicon carbide (SiC) and the energy distribution in the furnace are two important parameters in evaluating furnace operations. The energy distribution is determined by the resistivity of the materials in ... -
A Full-Field Crystal Plasticity Study on the Bauschinger Effect Caused by Non-Shearable Particles and Voids in Aluminium Single Crystals
(Journal article; Peer reviewed, 2024)In the present work, the goal is to use two-scale simulations to be incorporated into the full-field open software DAMASK version 2.0.3 crystal plasticity framework, in relation to the Bauschinger effect caused by the ... -
Effect of microstructure on precipitation of β-Mg2Si during cooling of Al-Mg- Si alloys
(Doctoral theses at NTNU;2024:228, Doctoral thesis, 2024)Processing of Al-Mg-Si alloys requires tight control of the various secondary Mg-Si phases that form during the processing steps. In this regard, the cooling stage after homogenisation is a crucial step because of the ...