Sökning: "spinodal decomposition"

Visar resultat 16 - 20 av 50 avhandlingar innehållade orden spinodal decomposition.

  1. 16. Defect-engineered (Ti,Al)N thin films

    Författare :Isabella Citlalli Schramm Benítez; Frank Mücklich; Magnus Odén; Sven Ulrich; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : This thesis investigates the effect of point defects (nitrogen vacancies and interstitials) and multilayering ((Ti,Al)N/TiN) on the phase transformations in cathodic arc-evaporated cubic (Ti,Al)N thin films at elevated temperatures. Special attention is paid to the evolution of the beneficial spinodal decomposition into c-TiN and c-AlN, the detrimental formation of wurtzite AlN and the potential application as hard coating in cutting tools. LÄS MER

  3. 17. Thermal stability and mechanical properties of TiAlN-based multilayer and monolithic coatings

    Författare :Axel Knutsson; Magnus Odén; Lennart Karlsson; Grégory Abadias; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : This thesis explores the thermal stability, microstructure, mechanical properties and cutting performance of multilayer and monolithic cubic TiAlN hard coatings. The aim is to increase the understanding of how the coatings’ microstructure and properties are affected by a layered structure when exposed to high temperatures. LÄS MER

  4. 18. Theoretical and experimental studies of ternary and quaternary nitrides for machining and thermoelectric materials

    Författare :Robert Pilemalm; Per Eklund; Sergei I Simak; Biplap Sanyal; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; materials science; thin film physics; nitrides; machining; thermoelectrics; materialvetenskap; tunnfilmsfysik; nitrider; metallbearbetning; termoelektricitet;

    Sammanfattning : Nitrides are used as coatings and thin films for a wide range of applications. The study and use of nitrides in the recent decades have shifted towards ternary, quaternary or even higher order (complex) nitrides. LÄS MER

  5. 19. Wear behavior of Ti1-xAlxN-based coatings during turning

    Författare :Maiara Moreno; Lina Rogström; Magnus Odén; Jon M. Andersson; José Luis Endrino; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Ti1-xAlxN coatings are extensively used on cutting tools used for metal cutting. In this thesis, the wear behavior of TiN, TiAlN with different Al-content, and TiAlWN and TiAlMoN coatings is investigated after turning, using electron microscopy and X-ray absorption spectroscopy techniques. LÄS MER

  7. 20. Microstructural evolution of TiAlN hard coatings at elevated pressures and temperatures

    Författare :Niklas Norrby; Magnus Odén; Mats Johansson; Jean-François Pierson; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : A typical hard coating on metal cutting inserts used in for example turning, milling or drilling operations is TiAlN. At elevated temperatures, TiAlN exhibits a well characterized spinodal decomposition into coherent cubic TiN and AlN rich domains, which is followed by a transformation from cubic to hexagonal AlN. LÄS MER