Sökning: "Phase transformations"

Visar resultat 11 - 15 av 129 avhandlingar innehållade orden Phase transformations.

  1. 11. Inside The Miscibility Gap : Nanostructuring and Phase Transformations in Hard Nitride Coatings

    Författare :Lars Johnson; Lars Hultman; Magnus Odén; Michael Kopnarski; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : This thesis is concerned with self-organization phenomena in hard and wear resistant transition-metal nitride coatings, both during growth and during post deposition thermal annealing. The uniting physical principle in the studied systems is the immiscibility of their constituent parts, which leads, under certain conditions, to structural variations on the nanoscale. LÄS MER

  3. 12. Phase Transformations in Computer Simulated Icosahedrally Ordered Phases

    Författare :Fredrik Zetterling; KTH; []
    Nyckelord :simpl liquids; molecular dynamics; pair potential; icosahedral custer;

    Sammanfattning : Computer simulations play a profound and fundamental role inmodern theoretical physics, chemistry and materials science. Tounderstand the complex physics of metally liquids, metals,quasicrystals and metally glasses a working model imposing thelocal and global order is needed. LÄS MER

  4. 13. Phase Retrieval Methods for Electromagnetic Source Modeling

    Författare :Markus Johansson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; source modeling; optimization; SAR; phase retrieval; dosimetry;

    Sammanfattning : Modeling of the field distributions from electromagnetic sources is of interest for various applications including electromagnetic compatibility investigations, near-field to far-field transformations, antenna diagnostics and electromagnetic dosimetry. In order to determine whether exposure safety guidelines, such as the EU directive 2004/40/EC, are complied with, source modeling methods are important. LÄS MER

  5. 14. On microwave low noise feedback amplifiers and control circuits

    Författare :Björn Albinsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Feedback; Phase shifter; Dual-gate phase shifter; Programmable load; Attenuator; Noise Transformations;

    Sammanfattning : .... LÄS MER

  7. 15. Electron microscopy studies of tungsten oxides in the range WO₃ - WO₂˔₇₂ : phase relations, defect structures, structural transformations and electrical conductivity

    Författare :Wubeshet Sahle; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Oorganisk kemi; Volfram;

    Sammanfattning : The article reviews recent studies of structural variations in the W-O system in the composition range of WO3-WO2.72. Several types of defect structures have been observed in high resolution electron microscopy studies and defect models have been proposed. LÄS MER