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Diffusion Couples and High-Temperatures In-Situ Techniques: Tools for Establishing Phase Equilibria: The Ti-N, Nb-N and Ti-Nb-N Systems

  • Walter Lengauer
  • , Birgit Wollein
  • , Vincenzo Buscaglia
  • , Riccardo Musenich
  • , Marcel Bohn
  • , Karine Lisak
    • TU Wien
    • Instituto Nazionale di Fiscia Nucleare in Genoa

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Following a review on the Ti-N and Nb-N systems the phase reactions in the Nb-N system are discussed. Insight into these systems was possible because of the use of in-situ investigation techniques such as DSC and HTXRD as well as diffusion couples, which partly represent an in-situ tool, too. Phase reactions in the Ti-Nb-N system were investigated by (Ti, Nb)N/Nb2/N diffusion couples and by nitridation. Metallography, EPMA and AES were employed for characterisation. The Nb2N phase dissolves a substantial amount of Ti. At 1800°C (Ti, Nb)N with 75 and 63% Ti atoms on the metal sublattice can demix into -Ti0.92Nb0.08N and -Ti0.60Nb0.40N.
    Original languageGerman
    Pages (from-to)591-602
    Number of pages12
    JournalAdvances of Sciences and Technology
    Publication statusPublished - 2000

    Research Field

    • Not defined

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