Now showing items 196-215 of 2576

    • Bimetallic Nano Electrocatalyst for HER in Alkaline Polymer Electrolysis 

      Faid, Alaa; Manikandan, Maidhily; Seland, Frode; Barnett, Alejandro; Sunde, Svein (Journal article; Peer reviewed, 2018)
      Ni and alloys of Ni (with Fe, Co, Mo) still represent the most suitable electrodes for HER in alkaline media. Bimetallic nanoparticles of NiFe and NiCo were fabricated by co-precipitation and thermal reduction by oleylamine. ...
    • Biocompatibility of (Ba,Ca)(Zr,Ti)O3 piezoelectric ceramics for bone replacement materials 

      Poon, Kara; Wurm, Matthias C.; Evans, Donald; Einarsrud, Mari-Ann; Lutz, Rainer; Glaum, Julia (Journal article; Peer reviewed, 2019)
      Total joint replacement implants are generally designed to physically mimic the biological environment to ensure compatibility with the host tissue. However, implant instability exposes patients to long recovery periods, ...
    • Biokarbon som reduksjonsmiddel i manganproduksjon 

      Braaten, Pauline Verula; Simonsen, Thomas Park (Bachelor thesis, 2020)
      Sammendraget kan ikke offentliggjøres på grunn av konfidensiell oppgave.
    • Biokarbon-engineering: forbedring av styrken til pellets 

      Chrobak, Lasse Svendsen; Værnes, Erlend Skjørstad (Bachelor thesis, 2019)
    • Bipolar Plates for PEM Systems 

      Lædre, Sigrid (Doctoral thesis at NTNU;2016:247, Doctoral thesis, 2016)
      Summary of thesis: The Bipolar Plate (BPP) is an important component in both Proton Exchange Membrane Fuel Cells (PEMFCs) and Proton Exchange Membrane Water Electrolyzers (PEMWEs). Bipolar plate material and processing ...
    • Black Silicon Structures 

      Juul, Maren Elise (Master thesis, 2018)
      Nanostructuring on the surface of silicon can make high efficient solar cells possible by lowering the reflection. Silicon wafers were successfully wet chemically etched with metal-assistance, to create a black silicon ...
    • Blacklight sintering of ceramics 

      Porz, Lukas; Rettenwander, Daniel (Peer reviewed; Journal article, 2022)
      For millennia, ceramics have been densified via sintering in a furnace, a time-consuming and energy-intensive process. The need to minimize environmental impact calls for new physical concepts beyond large kilns relying ...
    • Borated Salt Additives in LiFSI Based Electrolytes and Their Compatibility with Silicon Anodes, Aluminum Current Collectors and NMC Cathodes in Li-ion Batteries 

      Holsen, Ingrid Flatebø (Master thesis, 2020)
      Den dominerende batteriteknologien på markedet i dag er litium ione (Li-ion) batterier. De har lenge dominert batterimarkedet, og spesielt innen forbrukselektronikk er bruken av Li-ion batterier utbredt. Men teknologien ...
    • Boron Removal from Silicon by Humidified Gases 

      Safarian-Dastjerdi, Jafar; Tang, Kai; Hildal, Kjetil; Tranell, Gabriella (Journal article; Peer reviewed, 2014)
      Boron (B) is one of the most problematic impurities to remove from metallurgical grade silicon in the production of more pure solar grade silicon (SoG-Si). In the present work, recent progresses in the application of ...
    • Boron Removal from Silicon by Moisturized Gases 

      Safarian, Jafar; Sana, Claudio; Tranell, Gabriella (Chapter, 2017)
      The photovoltaic (PV) industry is in rapid growth and a large supply of PV feedstock materials must be provided to maintain this growth. Since silicon is still the dominant material for the fabrication of solar cells, ...
    • Boron removal from silicon by steam and hydrogen 

      Sortland, Øyvind Sunde (Doctoral thesis at NTNU;2015:268, Doctoral thesis, 2015)
      Solar cells are among the most promising technologies for development of sustainable power generation in terms of environmental impact and resource availability, and crystalline silicon cells dominate the present market ...
    • Boron Removal from Silicon Melt by gas Blowing Technique 

      Hoseinpur Kermani, Arman; Andersson, Stefan; Müller, Michael; Tang, Kai; Safarian, Jafar (Peer reviewed; Journal article, 2022)
      Due to the detrimental effects of boron (B) on the efficiency of silicon (Si) photovoltaic cells, complete boron removal from Si is necessary to produce solar grade Si (SoG–Si, with a maximum limit of 0.1 ppmw boron). Gas ...
    • Boron Removal from Silicon Melts by H2O/H2 Gas Blowing: Mass Transfer in Gas and Melt 

      Sortland, Øyvind Sunde; Tangstad, Merete (Journal article; Peer reviewed, 2014)
      Metallurgical routes for solar grade silicon production are being developed as alternatives to chemical processes for their potential to achieve cost reductions, increased production volume, and reduced environmental and ...
    • Boron trapping at dislocations in an additively manufactured polycrystalline superalloy 

      Antonov, Stoichko; Després, Arthur; Mayer, Charlotte; Martin, Guilhem; Kontis, Paraskevas (Peer reviewed; Journal article, 2023)
      Segregation of solutes at dislocations in a nickel-based superalloy produced by laser powder bed fusion was investigated. Transmission electron microscopy has shown a high dislocation density present in the as-built ...
    • Briquetting of Manganese Oxide Fines with Organic Binders - How well suited are organic binders for agglomeration of Mn-oxide fines? 

      By, Thomas (Master thesis, 2017)
      Dust and fines are created throughout the ferromanganese metal production. These fines are collected from ventilation filters, screening operations and off-gas cleaning facilities. As the fines contain a substantial amount ...
    • Brittle and Ductile Fracture of X80 Arctic Steel 

      Mohseni, Peyman (Doktoravhandlinger ved NTNU, 1503-8181; 2012:258, Doctoral thesis, 2012)
      This PhD work has focused on the effect of microstructure and changes in microstructure introduced by welding procedure, on the brittle to ductile transition properties of high strength low alloy steels which have been ...
    • Bubble evolution and anode surface properties in aluminium electrolysis 

      Thorne, Rebecca Jayne; Sommerseth, Camilla; Ratvik, Arne Petter; Rørvik, Stein; Sandnes, Espen; Lossius, Lorentz Petter; Linga, Hogne; Svensson, Ann Mari (Journal article, 2015)
      One significant contribution to the anodic potential during aluminum electrolysis is the formation of CO2 bubbles that screen the anode surface. This effect creates an additional ohmic resistance as well as an increased ...
    • Bubble Evolution on Different Carbon Anode Designs in Cryolite Melt 

      Stanic, Nikolina; Jevremovic, Ivana; Martinez, Ana Maria Cuellar; Sandnes, Espen (Peer reviewed; Journal article, 2020)
      The anode potential has been shown to be highly dependent on anode geometry and orientation in the Hall–Héroult process. This work is an experimental laboratory scale study of the effect of anode geometry and orientation ...