Formation of omega and Ti2Ni phases in a residual Ti-Ni-Ti multilayer between stainless steel and zirconia after bonding at 1173 K

Shen Hung Wei, Chien-Cheng Lin*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Stainless steel (316L) and 8 mol pct Y2O3-stabilized zirconia (8Y-ZrO2) were bonded using a Ti-Ni-Ti multilayer at 1173 K (900 °C) for 1 h. Cross-sectional transmission electron microscopy specimens were prepared by an innovative focused ion beam plus lift-out technique. In addition to acicular α-Ti, the dissolution of Fe, Cr, and Ni diffusing outwards from 316L into β-Ti led to the precipitation of the omega (ω) phase with different variants in the residual Ti foil between 316L and Ni. The ω-phase was not found in the residual Ti foil between Ni and 8Y-ZrO2, while Ti2Ni precipitates were precipitated in some α-Ti grains owing to the exclusion of Ni from the β-Ti.

    Original languageEnglish
    Pages (from-to)609-619
    Number of pages11
    JournalPhilosophical Magazine Letters
    Volume94
    Issue number10
    DOIs
    StatePublished - 3 Oct 2014

    Keywords

    • bonding
    • interfaces
    • omega phase
    • stainless steels
    • titanium
    • transmission electron microscopy

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