• Liquidus relations and thermochemistry within the system Fe-Mn-C-O 

      Fenstad, Jo (Dr. ingeniøravhandling, 0809-103X; 2000:126, Doctoral thesis, 2000)
      The ever-growing competition in the bulk material industry is increasingly a battle between branches of materials producers rather than within each branch. In this climate, an enduring competitiveness relies on continous ...
    • Solubility of Nickel in Mg-Al, Mg-Al-Fe, and Mg-Al-Mn Systems 

      Tathgar, Harsharn S. (Doctoral thesis, 2001)
      The corrosion properties of magnesium alloys strongly depend on the alloy composition and impurities. Heavy elements like nickel, and iron have low solubility in solid magnesium. The dissolved elements in molten magnesium ...
    • Continuous glass fibre-polypropylene composites made by melt impregnation 

      Nygård, Per (Doktoravhandlinger ved NTNU, 1503-8181; 2001:55, Doctoral thesis, 2001)
      In order to obtain best possible continuous glass fibre – polypropylene composites the following requisites should be fulfilled; wetting of the fibres by the melt, good adhesive strength between the fibres and the solid ...
    • A Study of Localized Corrosion in Supermartensitic Stainless Steel Weldments 

      Enerhaug, Jakob (Dr.ingeniøravhandling, 0809-103X; 2002:72, Doctoral thesis, 2002)
      This doctoral thesis is concerned with pitting corrosion in super martensitic stainless steel (SMSS) weldments in slightly sour service. Thee main objective with the present thesis has been to find out why pitting corrosion ...
    • Meniscus Dynamics in Aluminium Extrusion Ingot Casting 

      Iversen, Fionn (Dr. ingeniøravhandling, 0809-103X; 2002:57, Doctoral thesis, 2002)
      In the modern process of continuous Direct Chill (DC) hot top casting of aluminium extrusion ingot with gas slip, poor surface quality of the cast ingot can still be a problem. In the worst cases pronounced surface wrinkling ...
    • Effects of scandium addition in wrought aluminium alloys 

      Røyset, Jostein (Doktoravhandlinger ved NTNU, 1503-8181; 3, Doctoral thesis, 2002)
      A series of seven papers is presented in this thesis. Paper 1 is a comrehensive review of a considerable part of the available literature on Scandium in Aluminium alloys. Paper 2 and Paper 3 is a study of isothermal ...
    • Reaction kinetics for reduction of manganese ore with carbon monoxide in the presence of carbon 

      Ishak, Rodney (Dr. ingeniøravhandling, 0809-103X; 2002:135, Doctoral thesis, 2002)
      In the production of ferromanganese the gas-solid reactions taking place in the furnace shaft (the so-called pre-reduction zone, where higher manganese oxides in the manganese ore are reduced to MnO) are to a large extent ...
    • Electrochemical properties of phosphorus compounds in fluoride melts 

      Thisted, Elke William (Doktoravhandlinger ved NTNU, 1503-8181; 2003:52, Doctoral thesis, 2003)
      In the present work the behaviour of phosphorus species in fluoride-based melts was investigated. The motivation for the study was based on the deleterious effect of phosphorus on the aluminium production process. It is ...
    • Electrochemical Characterization of Melt Spun AB5 Type Alloys for Metal Hydride Batteries 

      Brateng, Randi (Dr. ingeniøravhandling, 0809-103X; 2003:45, Doctoral thesis, 2003)
      This thesis is part of a larger research project where two metal hydride forming AB5 type alloys have been investigated. A slightly non-stoichiometric alloy with mischmetal on A-site and nickel, cobalt, manganese and ...
    • Sodium expansion and creep of cathode carbon 

      Hop, Jørund Gimmestad (Dr. ingeniøravhandling, 0809-103X; 2003:44, Doctoral thesis, 2003)
      An apparatus to measure compressive creep in carbon materials has been developed. Using the final experimental set-up five material properties could be measured in each electrolysis experiment. Creep, sodium expansion, ...
    • Thermal Decoating of Aluminium Scrap 

      Kvithyld, Anne (Dr. ingeniøravhandling, 0809-103X; 2003:6, Doctoral thesis, 2003)
      A major problem in the recycling of aluminium is the presence of contaminants in the purchased scrap. Future plants may handle part of this challenge by installing a delacquering/decoating unit. This thesis attempts to lay ...
    • Physual Designing - A Supportive Framework for Dispersed Engineering Design 

      Kristensen, Kjetil Bjørn (Dr. ingeniøravhandling, 0809-103X; 2003:56, Doctoral thesis, 2003)
      Corporations involved in engineering design face multiple challenges; collaboration in complex, geographically dispersed value chains, increasing pressure to reduce lead times to improve their competitive positions, and ...
    • Chromate-free Pre-treatment of Aluminium for Adhesive Bonding 

      Lunder, Otto Reidar (Dr. ingeniøravhandling; 2003:59, Doctoral thesis, 2003)
      The increasing use of aluminium in automotive and transport applications is primarily driven by its high strength to weight ratio, enabling substantially improved fuel economy and reduced CO2 emissions when substituted for ...
    • Deformation and Softening behaviour of commercial AlMn-alloys: Experiments and Modelling 

      Sjølstad, Knut (Dr. ingeniøravhandling, 0809-103X; 2003:82, Doctoral thesis, 2003)
      A comprehensive study of the softening behaviour of two different non-heat treatable AlMn-alloys has been carried out. These alloys were a laboratory processed and an industrially processed AA3103-alloy. The primary objective ...
    • Alstruc' - en modell for størkning og varmebehandling av industrielle aluminiumlegeringer. 

      Dons, Anne Lise (Doctoral thesis, 2003)
      The thesis consists of a summary, and 11 papers. Part 6 in the summary includes a list of who did what in papers with several authors. The summary: The summary gives a short survey of 'Alstruc', and examples of calculations ...
    • The Effect of Strain Path Changes on the Subsequent Recrystallisation Properties of Aluminium Alloys 

      Valle, Randulf (Doktoravhandlinger ved NTNU, 1503-8181; 2004:10, Doctoral thesis, 2004)
      A study of strain path related effects on recrystallisation in aluminium has been carried out. The recrystallisation process has been studied after deformation in torsion and one pass hot rolling. For both deformation ...
    • Ammonia as Hydrogen Carrier. Effects of Ammonia on Polymer Electrolyte Membrane Fuel Cells 

      Halseid, Rune (Doktoravhandlinger ved NTNU, 1503-8181; 2004:25, Doctoral thesis, 2004)
    • High Pressure Die Casting of Aluminium and Magnesium Alloys: Grain Structure and Segregation Characteristics 

      Laukli, Hans Ivar (Doktoravhandlinger ved NTNU, 1503-8181; 2004:57, Doctoral thesis, 2004)
      Cold chamber high pressure die casting, (HPDC), is an important commercial process for the production of complex near net shape aluminium and magnesium alloy castings. The work presented in the thesis was aimed at investigating ...
    • Protective films on molten magnesium 

      Aarstad, Kari (Doktoravhandlinger ved NTNU, 1503-8181; 2004:7, Doctoral thesis, 2004)
      Molten magnesium will oxidize uncontrollably in an atmosphere of air. To inhibit this, a protective gas is used to cover the melt. The gas most commonly used today is SF6. Fluorine is known to be the active component of ...
    • Fluidity of Aluminium Foundry Alloys 

      Di Sabatino, Marisa (Doktoravhandlinger ved NTNU, 1503-8181; 2005:185, Doctoral thesis, 2005)
      The fluidity of an alloy plays a key role for the foundry and transport industries as it affects the quality and soundness of the cast products. Particularly, fluidity influences the reject rates, hence casting costs and ...