Search for dissertations about: "Gränsytors kemi"

Showing result 1 - 5 of 54 swedish dissertations containing the words Gränsytors kemi.

  1. 1. Orthoborate Ionic Liquids for Lubricated Interfaces

    Author : Mamoun Taher; Luleå tekniska universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Materials science - Functional materials; Chemistry - Physical chemistry; Chemistry - Organic chemistry; Materials science - Surface engineering; Teknisk materialvetenskap - Funktionella material; Kemi - Fysikalisk kemi; Kemi - Organisk kemi; Teknisk materialvetenskap - Ytbehandlingsteknik; Chemistry of Interfaces; Gränsytors kemi;

    Abstract : The lifespan and efficiency of various types of machinery is often limited by the performance of its lubricated interfaces, which are formed by two interacting surfaces and a lubricant that separates the surfaces to decrease friction and wear. There is a constant quest for more efficient lubricants capable of lubricating non-ferrous surfaces. READ MORE

  2. 2. Self-Diffusion and Microstructure of Some Ionic Liquids in Bulk and in Confinement

    Author : Andrei Filippov; Luleå tekniska universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Materials science - Surface engineering; Chemistry - Organic chemistry; Natural sciences - Physics; Chemistry - Physical chemistry; Teknisk materialvetenskap - Ytbehandlingsteknik; Kemi - Organisk kemi; Naturvetenskap - Fysik; Kemi - Fysikalisk kemi; Chemistry of Interfaces; Gränsytors kemi; Smarta maskiner och material FOI ; Smart machines and materials AERI ;

    Abstract : An ionic liquid (IL) is a salt, which usually is in the liquid state at normal temperature and pressure. The properties of ILs can be adjusted for various processes and applications by choosing different combinations of ions. Similar to other salts, ILs contain only ions with positive (cations) and negative (anions) charges in equal proportions. READ MORE

  3. 3. Reactions at the water-mineral interface of olivine and silicate modified maghemite

    Author : Rickard Jolsterå; Luleå tekniska universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Chemistry - Inorganic chemistry; Kemi - Oorganisk kemi; Chemistry of Interfaces; Gränsytors kemi;

    Abstract : The main objectives for this licentiate thesis have been to study and model the reactions at the water-mineral interface of two subsystems: maghemite-H+-silicate and olivine-H+. An increased knowledge of these systems will make it possible to further extend the complexity of the aqueous phase in future experiments. READ MORE

  4. 4. Boron compounds as additives to lubricants : synthesis, characterization and tribological optimization

    Author : Faiz Ullah Shah; Luleå tekniska universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Natural sciences - Chemistry; Naturvetenskap - Kemi; Chemistry of Interfaces; Gränsytors kemi;

    Abstract : Developing new technological solutions, such as use of lightweight materials, less harmful fuels, controlled fuel combustion processes or more efficient exhaust gas after-treatment, are possible ways to reduce the environmental impact of machines. Both the reduction of wear and the friction control are key issues for decreasing of energy losses, improving efficiency and increasing of the life-span of an engine. READ MORE

  5. 5. Interaction of magnetite with soluble silicates and bentonite : implications for wet agglomeration of magnetite concentrate

    Author : Xiaofang Yang; Luleå tekniska universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Physical Chemistry; Fysikalisk kemi; Chemistry of Interfaces; Gränsytors kemi;

    Abstract : Iron ore green pellets are produced by agglomeration of moist magnetite concentrates. The quality of green pellets is essential for the transportability and metallurgical benefits of the final product. READ MORE