Sökning: "Paul Erhart"

Hittade 3 avhandlingar innehållade orden Paul Erhart.

  1. 1. Multiscale modeling of nitride fuels

    Författare :Antoine Claisse; Pär Olsson; Janne Wallenius; Per Söderlind; Paul Blair; Paul Erhart; Natalia Skorodumova; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Uranium Nitride Ab Initio Modelling; Fysik; Physics;

    Sammanfattning : Nitride fuels have always been considered a good candidate for GENIV reactors, as well as space reactors, due to their high fissile density, highthermal conductivity and high melting point. In these concepts, not beingcompatible with water is not a significant problem. LÄS MER

  3. 2. Ab initio and phenomenological modeling of materials related to CVD hard coatings

    Författare :Axel Forslund; Andrei V. Ruban; Paul Erhart; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk materialvetenskap; Materials Science and Engineering;

    Sammanfattning : This thesis describes the work based on two different tools in computational materials science: a first-principles approach, namely that of density functional theory, and the CALPHAD approach.These two methods were used in this work to calculate properties of materials related to hard coatings, in particular coatings produced with chemical vapor deposition for the purpose of wear protection in cutting tools. LÄS MER

  4. 3. Theoretical studies of the coupling between electronic, vibrational, configurational and structural effects in metal borides

    Författare :Erik Johansson; Björn Alling; Johanna Rosén; Paul Erhart; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : This thesis addresses theoretical studies of the coupling between electronic, vibrational, configurational and structural degrees of freedom in metal borides. The effect of external conditions of temperature, pressure and composition on the interplay between internal degrees of freedom is investigated. LÄS MER