Blar i Institutt for materialteknologi på tittel

Viser treff 1857-1876 av 2498

    • Reactivity of Calcined Clays 

      Danner, Tobias (Doktoravhandlinger ved NTNU, 1503-8181; 2013:218, Doctoral thesis, 2013)
      With 3-5 billion tons cement-produced every year, the cement industry is today the third largest emitter of CO2 in the world after fossil-fuel based energy plants serving heating/cooling of buildings and combustion engines ...

    • Reactivity of Coke in Relation to Sulfur Level and Microstructure 

      Jahrsengene, Gøril; Rørvik, Stein; Ratvik, Arne Petter; Lossius, Lorentz Petter; Haverkamp, Richard G.; Svensson, Ann Mari (Journal article; Peer reviewed, 2019)
      The quality of coke materials available for anodes for the aluminium industry is changing and industrial cokes with higher impurity levels are now introduced. The cokes in the anodes must meet specifications with respect ...

    • Recent developments on manufacturing and characterization of fused quartz crucibles for monocrystalline silicon for photovoltaic applications 

      Warden, Gabriela Kazimiera; Juel, Mari; Gawel, Bartlomiej Adam; Sabatino, Marisa Di (Peer reviewed; Journal article, 2022)
      The dominating technology of solar cell production today is based on monocrystalline silicon, produced mostly by the Czochralski process. Recently, the solar cell industry, has started to move towards growing larger and ...

    • Recent trends in graphitic carbon nitride-based binary and ternary heterostructured electrodes for photoelectrochemical water splitting 

      Koutavarapu, Ravindranadh; Peera, Shaik Gouse; Lee, Tae Gwan; Myla, Chimpiri Rao; Lee, Dong-Yeon; Shim, Jaesool; Balasingam, Suresh Kannan (Journal article; Peer reviewed, 2021)
      The graphitic carbon nitride (g-C3N4) is a class of two-dimensional layered material. The ever-growing research on this fascinating material is due to its unique visible light absorption, surface, electrocatalytic, and ...

    • Recombination activity of grain boundaries in high-performance multicrystalline Si during solar cell processing 

      Krzysztof, Adamczyk; Søndenå, Rune; Stokkan, Gaute; Looney, Erin; Jensen, Mallory; Lai, Barry; Rinio, Markus; Sabatino, Marisa Di (Journal article; Peer reviewed, 2018)
      In this work, we applied internal quantum efficiency mapping to study the recombination activity of grain boundaries in High Performance Multicrystalline Silicon under different processing conditions. Wafers were divided ...

    • Recovery and Utilisation of Kerf Waste from Silicon Wafering Process 

      Lim, Kevin (Master thesis, 2018)
      While the green credentials of solar photovoltaic technology are often touted, there is still substantial room for improvement in the silicon solar photovoltaic value chain. In particular, silicon kerf which is a byproduct ...

    • Recovery Kinetics in High Purity and Commercial Purity Aluminium Alloys 

      Bunkholt, Sindre; Marthinsen, Knut; Nes, Erik Aasmund (Journal article, 2013)
      Motivated by improving current softening models for recycle friendly alloys, softening was investigated in high purity and commercial purity aluminium alloys. Utilizing the electron backscatter diffraction (EBSD) technique, ...

    • Recovery of Iron and Aluminum from Bauxite Residue by Carbothermic Reduction and Slag Leaching 

      Ekstrøm, Kai Erik; Bugten, Andreas Voll; Eijk, Casper van der; Lazou, Adamantia; Balomenos, E.; Tranell, Gabriella (Peer reviewed; Journal article, 2021)
      The recovery of major components of bauxite residue by carbothermic reduction at 1550–1750 °C and subsequent slag leaching in a Na3CO3(aq) solution is studied. Iron recovers primarily to pig-iron and lime is added to tune ...

    • Recovery of molybdenum and rhenium in scrub liquors of fumes and dusts from roasting molybdenite concentrates 

      Salehi, Hossein; Tavakoli, Hamed; Aboutalebi, M.R.; Samim, H.R. (Peer reviewed; Journal article, 2019)
      The present work addresses the recovery of rhenium from scrub liquor of molybdenite concentrate roasting fume and dust by solvent extraction method. According to the results, recovery of rhenium from the scrub liquor is ...

    • Recovery of Precious Metals (Au, Ag, Pt, and Pd) from Urban Mining Through Copper Smelting 

      Chen, Min; Avarmaa, Katri; Klemettinen, Lassi; O’Brien, Hugh; Sukhomlinov, Dmitry; Shi, Junjie; Taskinen, Pekka; Jokilaakso, Ari (Peer reviewed; Journal article, 2020)
      With the aim of investigating deportments of precious metals in pyrometallurgical processing of waste electrical and electronic equipment, the distributions of selected precious metals (gold, silver, platinum, and palladium) ...

    • Recrystallisation Behaviour in Extruded Profiles of Non-Dispersoid Containing Al-Mg-Si Alloys 

      Paulsen, Christian Oen (Master thesis, 2015)
      Hot extrusion of non-dispersoid containing aluminium alloys commonly ends with a fully or partially recrystallised grain structure. However, the recrystallisation mechanisms, whether static or dynamic (taking place during ...

    • Recrystallization and phase transformation of light metals induced by electric current flash heating 

      Wang, Shubo (Doctoral theses at NTNU;2020:186, Doctoral thesis, 2020)
      Aluminium (Al), and titanium (Ti) alloys are two commonly used light metal materials in the aerospace and automotive industry due to their high strength-to-weight ratio. Various heat treatments are applied to improve the ...

    • Recycled Aluminium Alloys and their Models: Role and Behaviour of Alloying Elements during Alkaline Etching 

      Mysliu, Erlind; Sletteberg Storli, Kathrine; Kjørsvik, Eline; Lunder, Otto; Erbe, Andreas (Peer reviewed; Journal article, 2023)
      Alkaline etching is a common pretreatment for aluminum surfaces. Etching behavior was compared between an alloy based on post-consumer scrap (PCS) and several model alloys of rolled AA3005 and extruded AA6060 with ...

    • Recycling and Utilisation of Secondary Aluminium Products 

      Meling, Ingrid (Master thesis, 2018)
      Efficient utilisation of secondary aluminium products is increasingly important as the energy consumption and CO2 emissions are greatly reduced by recycling compared to primary production. The aim of this study was to ...

    • Recycling of Al from incinerator bottom ash with screw extruder 

      Breivik, Sigmund Langedal (Master thesis, 2021)
      Abstract will be available on 2024-07-01

    • Recycling of Aluminium from Mixed Household Waste 

      Eggen, Sigvart; Sandaunet, Kurt; Kolbeinsen, Leiv; Kvithyld, Anne (Chapter, 2020)
      Aluminium is used in packaging due to its density, strength and preservative capabilities. This paper outlines a methodology to evaluate the recyclability of aluminium waste, where parameters of scrap type, pre-treatment ...

    • Recycling of Aluminium from Mixed Household Waste 

      Eggen, Sigvart; Sandaunet, Kurt; Kolbeinsen, Leiv; Kvithyld, Anne (Chapter, 2020)
      Aluminium is used in packaging due to its density, strength and preservative capabilities. This paper outlines a methodology to evaluate the recyclability of aluminium waste, where parameters of scrap type, pre-treatment ...

    • Recycling of Aluminum Scrap by Severe Plastic Deformation 

      Cui, Jirang; Guo, Wei; Roven, Hans Jørgen; Wang, Qudong; Chen, Yongjun; Peng, Tao (Journal article; Peer reviewed, 2011)
      The production of primary aluminum is an energy costly process. With the global warming being of concern, the secondary aluminum stream is becoming an even more important component of aluminum production and is attractive ...

    • Recycling of automotive aluminum 

      Cui, Jirang; Roven, Hans Jørgen (Journal article; Peer reviewed, 2010)
      With the global warming of concern, the secondary aluminum stream is becoming an even more important component of aluminum production and is attractive because of its economic and environmental benefits. In this work, ...

    • Recycling of Fine Silicon Particles for Solar Grade Silicon Production 

      Wermers, Matthew Engel (Master thesis, 2018)
      The production of solar grade silicon wafers results in 50% wasted silicon. Due to the high volume of waste, recycling the fines into a useable material allows for use of all this valuable silicon. Currently there is no ...