Search for dissertations about: "spinodal decomposition"

Showing result 11 - 15 of 50 swedish dissertations containing the words spinodal decomposition.

  2. 11. Configurational and Magnetic Interactions in Multicomponent Systems

    Author : Björn Alling; Igor A. Abrikosov; Lars Hultman; Stefan Blügel; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Magnetic interactions; Configurational thermodynamics; Curie temperature; theoretical physics; magnetism; TiAlN; TiN; AlN; CrN; TiCrN; nitrides; NiMnSb; NiCuMnSb; Heusler alloys; spintronics; half-metallic; spinodal decomposition; first-principles; ab-initio; Magnetism; Magnetism;

    Abstract : This thesis is a theoretical study of configurational and magnetic interactions in multicomponent solids. These interactions are the projections onto the configurational and magnetic degrees of freedom of the underlying electronic quantum mechanical system, and can be used to model, explain and predict the properties of materials. READ MORE

  4. 12. An Atom-Probe Tomography Study of Phase Separation in Fe-Cr Based Steels

    Author : Jing Zhou; John Ågren; Peter Hedström; Hänninen Hannu; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fe-Cr alloys; Ferritic stainless steels; Spinodal decomposition; Phase separation; Atom probe tomography; Radial distribution function RDF ; Materials Science and Engineering; Teknisk materialvetenskap;

    Abstract : Stainless steels are very important engineering materials in a variety of applications such as in the food industry and nuclear power plants due to their combination of good mechanical properties and high corrosion resistance. However, ferrite-containing stainless steels are sensitive to the so-called ‘475°C embrittlement’, which is induced by phase separation of the ferrite phase, where it decomposes into Fe-rich ferrite (α) and Cr-rich ferrite (α'). READ MORE

  5. 13. Experimental study of phase separation in Fe-Cr based alloys

    Author : Jing Zhou; John Ågren; Joakim Odqvist; Peter Hedström; Andersson Marcus; KTH; []
    Keywords : Duplex stainless steels; Ferritic stainless steels; Spinodal decomposition; Phase separation; Atom probe tomography; Clustering; Radial distribution function RDF ;

    Abstract : Duplex stainless steels (DSSs) are important engineering materials due to their combination of good mechanical properties and corrosion resistance. However, as a consequence of their ferrite content, DSSs are sensitive to the so-called ‘475°C embrittlement’, which is induced by phase separation, namely, the ferrite decomposed into Fe-rich ferrite (α) and Cr-rich ferrite (α'), respectively. READ MORE

  6. 14. Thin films of polyfluorene:fullerene blends - Morphology and its role in solar cell performance

    Author : Cecilia Björström Svanström; Ellen Moons; Jean Manca; Karlstads universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Polymer Solar Cells; Polymer Blends; Morphology; Polyfluorene; PCBM; AFM; SIMS; Spin-Coating; Surface Directed Spinodal Decomposition; Physics; Fysik; Physics; Fysik;

    Abstract : The sun provides us daily with large quantities of energy in the form of light. With the world’s increasing demand of electrical energy the prospect of converting this solar light into electricity is highly tempting. In the strive towards mass-production and low cost solar cells, new types of solar cells are being developed, e.g. READ MORE

  7. 15. TiAlN-based Coatings at High Pressures and Temperatures

    Author : Robert Pilemalm; Magnus Odén; Mikael Olsson; Rachid M'Saoubi; Mats Jöesaar; Linköpings universitet; []
    Keywords : Materials science; thin films; coatings; spinodal decomposition; TiAlN; TiZrAlN; HPHT; high pressure high temperature; BELT-press; transmission electron microscopy; x-ray diifraction; microhardness;

    Abstract : TiAlN and TiAlN-based coatings that are used of relevance as protection of cutting tool inserts used in metal machining have been studied. All coatings were deposited by reactive cathodic arc evaporation using industrial scale deposition systems. The metal content of the coatings was varied by using different combinations of compound cathodes. READ MORE