Blar i Fakultet for naturvitenskap (uspesifisert) på emneord "Materialvetenskap"

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    • Behaviour of nickel, iron and copper by application of inert anodes in aluminium production 

      Lorentsen, Odd-Arne (Dr. ingeniøravhandling, 0809-103X; 2000:104, Doctoral thesis, 2000)
      A thorough investigation was performed on the behaviour of Ni, Fe and Cu oxides dissolved in cryolite melts, and the solubility of these species was measured as a function of alumina content, NaF/AlF3 molar ratio (CR) and ...

    • Evolution of Alpha Phase Alumina in Agglomerates upon Addition to Cryolitic Melts 

      Østbø, Niels Peter (Dr. ingeniøravhandling, 0809-103X; 2002:50, Doctoral thesis, 2002)
      Rapid dissolution of alumina upon addition to the cryolitic melt is crucial for the modern Hall-Heroult process for aluminium production. The formation of slow - dissolving alumina agglomerates may be detrimental, and ...

    • Plastic Deformation at Moderate Temperatures of 6XXX-series Aluminium Alloys 

      Aastorp, Knut Iver (Dr. ingeniøravhandling, 0809-103X; 2002:12, Doctoral thesis, 2002)
      The present work has been carried out in order to investigate Al-Mg-Si alloys that are deformed at moderate temperatures. These temperatures are in the range between 200 C and 300 C. Also some experiments are performed at ...

    • Rapid Solidification of AB5 Hydrogen Storage Alloys 

      Gulbrandsen-Dahl, Sverre (Dr.ingeniøravhandling, 0809-103X; 2002:7, Doctoral thesis, 2002)
      This doctoral thesis is concerned with rapid solidification of AB5 materials suitable for electrochemical hydrogen storage. The primary objective of the work has been to characterise the microstructure and crystal structure ...

    • Steam explosions during granulation of Si-rich alloys.: Effect of Al- and Ca-additions 

      Hildal, Kjetil (Dr.ingeniøravhandling, 0809-103X; 2002:43, Doctoral thesis, 2002)
      Steam explosions are possible during granulation of Si and FeSi75. These explosions are a great hazard, and must be avoided. Norwegian ferroalloy producers have initiated a research program to learn more about such violent ...

    • Work Hardening and Mechanical Anisotropy of Aluminium Sheets and Profiles 

      Ryen, Øyvind (Dr. ingeniøravhandling, 0809-103X; 2003:105, Doctoral thesis, 2003)
      The processing of aluminium alloys from casting to end product is associated with a large number of metallurgical phenomena. In order to further improve and optimise process routes and alloys, a thorough understanding of ...