Blar i Institutt for materialteknologi på tittel

Viser treff 2012-2031 av 2513

    • Simulation of Anion-Exchange Membrane Water Electrolyser with degradation of IrO2 as electrocatalyst for oxygen evolution 

      Karstensen, Pål Emil England (Master thesis, 2023)
      Økende effekter av global oppvarming som skyldes voksende mengder CO2 og andre drivhusgasser forbundet med menneskelig industri øker motivasjonen for å finne erstatninger for fossile brensler. Hydrogen har lenge vært en ...

    • Simulation of potential and species distribution in a Li||Bi liquid metal battery using coupled meshes 

      Duczek, Carolina; Weber, Norbert; Godinez Brizuela, Omar Emmanuel; Weier, Tom (Journal article; Peer reviewed, 2023)
      In this work a 1D finite volume based model using coupled meshes is introduced to capture potential and species distribution throughout the discharge process in a lithium–bismuth liquid metal battery while neglecting ...

    • A Single-Pot Co-Precipitation Synthesis Route for Ni-Rich Layered Oxide Materials with High Cycling Stability 

      Pollen, Harald Norrud; Tolchard, Julian R; Svensson, Ann Mari; Wagner, Nils Peter (Peer reviewed; Journal article, 2022)
      In this work we report variations of LiNi0.88Mn0.06Co0.06O2 synthesised through a single-pot oxalic acid co-precipitation route, in which all cation precursors were added in the same step. The effects of Al-doping, ...

    • Sintering and transport properties of Al-LLZO ceramic electrolytes for use in solid-state Li-ion batteries 

      Eriksen, Ulrik Aalborg (Master thesis, 2021)
      Faststoffelektrolytter blir forsket på som en mulig substitutt til de flytende organiske elektrolyttene som brukes i dagens Li-ion batterier. Bruk av faststoffelektrolytter vil øke batterisikkerheten, og muliggjøre bruk ...

    • Sintering behaviour and mechanical properties of porous alumina ceramics 

      Bakken, Astrid (Doktoravhandlinger ved NTNU, 1503-8181; 2013:316, Doctoral thesis, 2013)
      Alumina is a commercial ceramic material with high strength, good chemical durability and excellent electrical insulating properties. Porous alumina has been identied as the prime candidate as a porous bipolar membrane in ...

    • Sintering of lead-free piezoelectric materials 

      Bakken, Kristine (Master thesis, 2015)
      Piezoelectric ceramics are used in many types of devices, and today, lead zirconate titanate (PZT) dominates the market due to its superior properties. Environmental and health concerns have made the search for lead-free ...

    • Sintering of sub-micron K0.5Na0.5NbO3 powders fabricated by spray pyrolysis 

      Haugen, Astri Bjørnetun; Madaro, Francesco; Bjørkeng, Lars Petter; Grande, Tor; Einarsrud, Mari-Ann (Journal article; Peer reviewed, 2015)
      K0.5Na0.5NbO3 (KNN)-based ceramics are promising lead-free piezoelectrics, but processing of these materials is an ongoing challenge. Here, we present a spray pyrolysis route to highquality KNN-based powders. Fine-grained ...

    • Sintering Properties and Li-ion Conductivity of Solid-State Electrolytes with Composition Li7−xLa3Zr2−xTaxO12 (x=0.25 and x=0.6) 

      Herskedal, Hanna Kvam (Master thesis, 2022)
      Den siste tiden har det vært en økende interesse for faststoffelektrolytter som potensielle erstatninger for de flytende organiske elektrolyttene som brukes i nåværende Li-ion-batterier. Bruk av faststoffelektrolytter vil ...

    • Size and shape effects on the thermodynamic properties of nanoscale volumes of water 

      Strøm, Bjørn; Simon, Jean-Marc; Schnell, Sondre Kvalvåg; Kjelstrup, Signe; He, Jianying; Bedeaux, Dick (Journal article; Peer reviewed, 2017)
      Small systems are known to deviate from the classical thermodynamic description, among other things due to their large surface area to volume ratio compared to corresponding big systems. As a consequence, extensive ...

    • Skumdannelse i sink-nikkel legeringer 

      Sivananthan, Arthika; Choudry, Khadija (Bachelor thesis, 2020)
      Denne oppgaven ble skrevet i samarbeid med Boliden Odda AS. Ved produksjon av sink-nikkel legeringer dannes det uønsket skum. Dette skummet er problematisk da det er lite salgbart og skaper problemer for røreverket og ...

    • Slag and its effect on Si and FeSi production 

      Folstad, Marit Buhaug (Doctoral theses at NTNU;2023:317, Doctoral thesis, 2023)
      Silicon (Si) is one of the most useful elements on earth and is popular due to its semiconductor characteristics and its abundance in form of quartz (SiO2). Both metallurgical Si and ferrosilicon (FeSi) are produced ...

    • Slag and refractory compatibility in the CONSTEEL EAF 

      Ahmad, Esmail (Master thesis, 2016)
      This project is in collaboration with Celsa Armeringsstål AS facilities in Mo i Rana, consisting of a steel mill, with a continuous charging EAF (CONSTEEL Electric Arc Furnace), and a combined rolling mill for reinforcing ...

    • Slag Properties in the Primary Production Process of Mn-Ferroalloys 

      Tangstad, Merete; Bublik, Sergey; Haghdani, Shokouh; Einarsrud, Kristian Etienne; Tang, Kai (Peer reviewed; Journal article, 2021)
      The present study has investigated the influence of sulfur content in synthetic FeMn and SiMn from 0 to 1.00 wt pct on interfacial properties between these ferroalloys and slags. The effect of experimental parameters such ...

    • Slag Reduction and Viscosities Interaction in Ferromanganese Process 

      Mukono, Tichaona; Wallin, Maria; Tangstad, Merete (Peer reviewed; Journal article, 2022)
      Slag reduction and viscosity are closely related in the practical operation of a submerged arc furnace for ferromanganese (FeMn) production. The viscosity of slag is dependent on temperature and its composition, and ...

    • Slag Refining of Iron with Respect to Phosphorus 

      Saadieh, Raghed (Master thesis, 2014)
      TiZir Titanium and Iron produces high purity pig iron and titania slag from ilmenite. However, new ilmenite ores from Grande Côte Mineral Sands Project mine contain high level of phosphorus, which will contaminate the ...

    • Slag-metal interactions in the FeMn tapping process: Interfacial properties and wetting 

      Bublik, Sergey; Bao, Sarina; Tangstad, Merete; Einarsrud, Kristian Etienne (Chapter, 2019)
      FeMn-alloys are produced by transforming ore and carbon materials into FeMn and slag at high temperatures in a furnace. Entrainment of FeMn in slag during tapping reduces the yield. Entrainment and subsequent separation ...

    • Slag-Metal Separation in Mn Ferroalloy Production 

      Bublik, Sergey (Doctoral thesis, 2022)
      The separation of slag and metal in the ferroalloy production process is an important issue that has an impact on both the ecological and environmental considerations of the entire production process. The extensive mixing ...

    • Slikkerstøping av SiC: Effekten av pulver- og slikkeregenskaper på grønnkropp 

      Havmo, Johannes Ljosdal; Hussein, Hafiza; Karlsen, Jon Tobias Aga (Bachelor thesis, 2021)
      I denne oppgaven ble det undersøkt hvilken effekt pulver- og slikkeregenskaper har på slikkerstøpte grønnkropper til rekrystallisert silisiumkarbid. Oppgaven er skrevet i samarbeid med Washington Mills AS, som produserer ...

    • Slip Casting of Solid State SiC 

      Ellefsen, Oda Marie (Master thesis, 2018)
      A study of the parameters influencing the rheology of silicon carbide slurries containing boron carbide and carbon sintering additives was done. Carbon black and Novolac were used as carbon additives and their effect on ...

    • Slow surface diffusion on Cu substrates in Li metal batteries 

      Røe, Ingeborg Treu; Schnell, Sondre Kvalvåg (Peer reviewed; Journal article, 2021)
      Dendrite growth on the lithium metal anode still obstructs a widespread commercialization of high energy density lithium metal batteries. In this work, we investigate how the crystal structure of the copper foil current ...