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Microstructure evolution and mechanical properties of vacuum-brazed C/C composite with AgCuTi foil

  • Wei Guo
  • , Ying Zhu
  • , Lin Wang
  • , Ping Qu
  • , Hui Kang
  • , Paul K. Chu

    Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

    Abstract

    The microstructure and bonding strength of vacuum-brazed C/C composite and C/C composite with AgCuTi foil are studied. The interface structure of the brazed joint is C/C composite-TiC-eutectic structure of AgCu-TiC-C/C composite. The maximum shear strength of the joint is about 20. MPa and TiC formed at the edge of C/C composite plays a key role in the brazing process. It improves the wettability of the C/C composite and inhibits diffusion of the Ag and Cu atoms in the filler metal and C atoms in the C/C composite. The fracture mode of the brazing joint is brittle. The interface evolution in the brazing process and associated mechanism are discussed. © 2012 Elsevier B.V.
    Original languageEnglish
    Pages (from-to)192-198
    JournalMaterials Science and Engineering A
    Volume564
    DOIs
    Publication statusPublished - 1 Mar 2013

    Research Keywords

    • AgCuTi foil
    • Brazing
    • Carbon/carbon composite
    • Fracture
    • Microstructure

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