Search for dissertations about: "Lars Hultman"

Showing result 1 - 5 of 75 swedish dissertations containing the words Lars Hultman.

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

    Author : Lars Johnson; Lars Hultman; Magnus Odén; Michael Kopnarski; Linköpings universitet; []
    Keywords : ;

    Abstract : 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. READ MORE

  2. 2. Nanostructuring and Age Hardening in TiSCN, ZrAlN, and TiAlN Thin Films

    Author : Lars Johnson; Lars Hultman; Axel Flink; Linköpings universitet; []
    Keywords : thin films; age hardening; spinodal decomposition; TiSiCN; ZrAlN; TiAlN; Transmission electron microscopy; Atom probe tomography; NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : This thesis explores nanostructuring in TiSiCN, ZrAlN, and TiAlN thin films deposited by cathodic arc evaporation onto cemented carbide substrates, with intended applications for cutting tools. The three systems were found to exhibit age hardening upon annealing, by different mechanisms, into the superhard regime (≥30 GPa), as determined by a combination of electron microscopy, X-ray diffraction, atom probe tomography, erda, and nanoindentation tech- niques. READ MORE

  3. 3. Thick and Thin Ti2AlC Coatings

    Author : Jenny Frodelius; Lars Hultman; Per Eklund; Hans Högberg; Lars Nyborg; Linköpings universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : This Thesis explores the deposition techniques of magnetron sputtering and high velocity oxy-fuel (HVOF) spraying for Ti2AlC as a promising high-temperature material. Magnetron sputtering aims at producing thin (≤1 μm) Ti2AlC films of high crystal quality for use as a model system in understanding the material’s basic properties. READ MORE

  4. 4. Business Streamlining : Toward a Substantive Theory of the Streamlining of Outsourced Business Processes

    Author : Jonas Molin; Björn Axelsson; Lars-Torsten Eriksson; Lars-Johan Åge; Jens Hultman; Högskolan i Gävle; []
    Keywords : SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Business services; Outsourcing; Grounded theory; Business Relationships; Business process; Relationship Management;

    Abstract : Research comparing public-private services outsourcing applying a longitudinal approach including the production/delivery processes (life after purchase) in services sourcing contexts is scarce. In addition, prior studies on service sourcing tend be under conceptualized. READ MORE

  5. 5. High-resolution characterization of TiN diffusion barrier layers

    Author : Marlene Mühlbacher; Lars Hultman; Christian Mitterer; Lars Johnson; Linköpings universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Diffusion; TiN; Microstructure; Transmission electron microscopy; TEM; Atom probe tomography; APT;

    Abstract : Titanium nitride (TiN) films are widely applied as diffusion barrier layers in microelectronic devices. The continued miniaturization of such devices not only poses new challenges to material systems design, but also puts high demands on characterization techniques. READ MORE