Search for dissertations about: "in situ crystallization"

Showing result 1 - 5 of 19 swedish dissertations containing the words in situ crystallization.

  2. 1. Crystallization in additive manufacturing of metallic glass

    Author : Anders Ericsson; Hållfasthetslära; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Amorphous metals; Crystallization; Laser powder bed fusion; Neutron scattering; Phase-field theory; Classical nucleation theory;

    Abstract : Metallic glasses are non-crystalline metals that are obtained by rapid cooling of the melt to bypass crystallization. The amorphous atomic structure shows enhanced properties relative to the crystalline counterpart. For example, enhanced mechanical properties, improved corrosion resistance, as well as excellent soft magnetic properties. READ MORE

  4. 2. Crystallization of Parabens : Thermodynamics, Nucleation and Processing

    Author : Yang Huaiyu; Åke Rasmuson; Joop ter Horst; KTH; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Nucleation; Induction time; Interfacial energy; Ethyl paraben; Propyl paraben; Butyl paraben; Methanol; Ethanol; Propanol; Acetone; Ethyl acetate; Solubility; Thermodynamics; Activity; Activity coefficient; Liquid-liquid phase separation; Ternary phase diagram; Melting point; Boiling point; Polarity; Cooling crystallization; Sandwich crystal; Porous; Particle Vision and Measurement; Focused Beam Reflectance Method; Infrared Spectroscopy; Confocal Raman Microscopy; X-Ray Diffraction; Differential Scanning Calorimetry; SRA - E-Science SeRC ; SRA - E-vetenskap SeRC ;

    Abstract : In this work, the solubility of butyl paraben in 7 pure solvents and in 5 different ethanol-water mixtures has been determined from 1 ˚C to 50 ˚C. The solubility of ethyl paraben and propyl paraben in various solvents has been determined at 10 ˚C. READ MORE

  5. 3. Crystallization and Differentiation Processes in the Thin Layered Alkali Gabbroic Intrusions of the Ulvö Gabbro Complex, Central Sweden

    Author : Johan Hogmalm; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; layered intrusion; fractional crystallization; modal layering; in situ crystallization; Ulvö; saucer-shaped sill; post-cumulus; LA ICP-MS;

    Abstract : Fractional crystallization of magma is a commonly invoked mechanism for chemical differentiation in systems that range from volcanoes to entire planets. However, the processes that control separation of crystals and liquids in natural systems remain controversial, since the dynamics of crystallizing magma chambers cannot be studied directly. READ MORE

  6. 4. Reaching Kinetic Selectivities : In Pursuing Novel Ternary Oxide Coatings, and Beyond

    Author : Sebastian Öhman; Mats Boman; Tobias Törndahl; Maarit Karppinen; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; CVD; coatings; kinetics; crystallization; nucleation; diffusionless; Al2TiO5; oxides; Chemistry with specialization in Inorganic Chemistry; Kemi med inriktning mot oorganisk kemi; Kemi med inriktning mot materialkemi; Chemistry with specialization in Materials Chemistry;

    Abstract : Kinetically driven synthesis pathways have the potential to allow new ways to develop materials and phases with much-improved properties. This particularly concerns metastable and multicomponent phases that require a selective kinetic targeting during the synthesis to circumvent the formation of thermodynamically stable products. READ MORE

  7. 5. Crystallization of chiral compounds-Possibilities and limitations for resolution by direct crystallization

    Author : Veronica Profir; KTH; []
    Keywords : metastable racemate; nucleation; solvent effect; solubility; direct crystallization; in situ IR spectroscopy; multivariate calibration;

    Abstract : .... READ MORE