Browsing Institutt for materialteknologi by Title
Now showing items 1421-1440 of 2563
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Manganese and Aluminium Recovery from Ferromanganese Slag and Al White Dross by a High Temperature Smelting-Reduction Process
(Peer reviewed; Journal article, 2022)The recovery of Mn and Al from two industrial waste of ferromanganese and aluminum production processes was investigated via implementing a high temperature smelting—aluminothermic reduction process. The experiments were ... -
Manganese Oxide in Zinc Electrowinning: Deposition and removal at platinum, gold and IrO2-Ta2O5/Ti anodes in sulphuric acid
(Doctoral theses at NTNU;2021:242, Doctoral thesis, 2021)An environmentally friendly and energy efficient replacement for lead anodes in zinc electrowinning is highly desired. Oxygen evolution reaction (OER) is the desired anode reaction in acidic sulphate electrolytes. However, ... -
Manufacturing of perovskite oxygen carriers by spray granulation for chemical looping combustion
(Journal article; Peer reviewed, 2017)Chemical looping combustion is a technology under development that allows power production with inherent separation of CO2 during fuel combustion. Its principle relies on oxygen carrier materials transporting oxygen from ... -
Mass and Energy Balanced Life Cycle Assessment of Metallurgical Grade Silicon Production
(Master thesis, 2022)På grunn av forsyningsrisiko og en uerstattelig anvendelse innenfor et bredt spekter av lavkarbonteknologier, er silisium ansett som et kritisk råmateriale. Metallet fremstilles ved reduksjon av SiO2 i kvarts, ved bruk av ... -
Mass and Energy Balances of the Silicon Process: - Improved Emission Standards
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:162, Doctoral thesis, 2012) -
Mass Transfer Coefficients and Bubble Sizes in Oxidative Ladle Refining of Silicon
(Master thesis, 2016)The mass transfer of [Al] and [Ca] between three synthetic SiO_{2}-CaO-Al_{2}O_{3} slags, and 8N silicon, has been investigated to find the overall mass transfer coefficient k_{i,t} for the individual species. Samples were ... -
Mass Transfer of Al and Ca Between Silicon and Synthetic SiO2-CaO-Al2O3 Slags
(Chapter, 2017)The mass transfer of Al and Ca between silicon and synthetic SiO2 −CaO − Al2O3 slags of varying composition has been investigated, using different experimental set-ups. Samples were kept at 1600◦C, varying the holding times ... -
Mass-transport impedance at channel electrodes: Accurate and approximate solutions
(Journal article; Peer reviewed, 2016)Accurate numerical electrochemical impedance spectra at channel electrodes are obtained using commercial finite element method software. These agree with experimental measurements on the hexaammineruthenium(II/III) reversible ... -
Master Slag Production for the Recovery of Rare Earth Elements
(Master thesis, 2017)The Rare Earth Elements (REEs) is a term describing a group of 17 elements which are critical components in many technological applications due to their magnetic or optical properties. In contrast to the name, these elements ... -
Material Flow Analysis of FeSi Furnace at Elkem Bjølvefossen
(Bachelor thesis, 2020)Hensikten med denne bacheloroppgaven var å utføre en materialstrømanalyse for ovn 5 ved Elkem Bjølvefossen med utgangspunkt i råvaredata fra 2019. Antagelsen om 100% jernutbytte er grunnlaget for distribusjon av hoved- og ... -
Material Sustainability and Patient’s Experiences of Silver Tracheostomy Tubes-An In-Vitro and In-Vivo Case Study
(Peer reviewed; Journal article, 2021)Introduction: Tracheostomy tubes are used for enabling a free airway for patients with respiratory failures. In trachea, tracheostomy tubes are exposed to the alkaline tracheal secretion and lining fluid containing proteins, ... -
Materialer for overføring av varme fra solcellepaneler
(Bachelor thesis, 2019)En innovativ metode for å forbedre effektiviteten til fotovoltaiske (PV) solceller ved økt omgivelsestemperatur er å benytte et fotovoltaisk/termisk (PV/T) system. Systemet tilbyr en kjølemekanisme for PV-modulen ved å ... -
Materials for Proton Exchange Membrane water electrolyzer bipolar plates
(Journal article; Peer reviewed, 2017)Titanium based BiPolar Plates (BPPs) are commonly used in Proton Exchange Membrane Water Electrolyzers (PEMWEs) today as they can withstand the harsh operating conditions experienced inside an operating PEM water electrolyzer. ... -
Measures to reduce emissions from offshore drilling units
(Bachelor thesis, 2020)Hensikten med denne bacheloroppgaven har vært å studere hvordan Lundin Energy Norge AS sin lete- og produksjons aktivitet bidrar selskapets totale utslipp av CO2 og NOx, både i et historisk og fremtidig perspektiv, og for ... -
Measuring ferroelectric order parameters at domain walls and vortices in hexagonal manganites with atomic resolution STEM
(Journal article; Peer reviewed, 2017) -
Measuring In Situ Interfacial Contact Resistance in a Proton Exchange Membrane Fuel Cell
(Journal article; Peer reviewed, 2019)Interfacial contact resistance (ICR) is one of the remaining hurdles for successful implementation of stainless steel bipolar plates in PEM fuel cells. We have developed a reliable method, using thin gold wires, to measure ... -
Measuring the thermal conductivity of membrane and porous transport layer in proton and anion exchange membrane water electrolyzers for temperature distribution modeling
(Journal article; Peer reviewed, 2019)Water electrolyzers that use a membrane electrolyte between the electrodes are a promising technology towards mass production of renewable hydrogen. High power setups produce a lot of heat which has to be transported through ... -
Mechanical and tribological properties of injection molded zirconia-alumina for orthopedic implants
(Journal article, 2022)Ceramics have gained great attention for hip and knee arthroplasty surgical procedures due to their ability to guarantee long-life performance in patients and are considered an alternative to existing metal systems. In ... -
Mechanical Properties after Welding and Post Weld Heat Treatment of a 6082 Aluminium Alloy
(Master thesis, 2018)Lightweight materials are currently gaining popularity and are sought for by the construction and transportation industries. The heat-treatable 6xxxx series aluminium alloys are popular in lightweight products by combining ... -
Mechanical Properties and Corrosion Behaviour of Extruded and Welded AA6082
(Master thesis, 2014)Welding and corrosion will play a key role in the further increased use of aluminium alloys in industrial applications. This is especially true as the oil and gas industry is moving into the arctic region in search for new ...