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Welding in the World

, Volume 56, Issue 1–2, pp 76–80 | Cite as

Joining of Cf/SiC Composite With Pd-Co-V Brazing Filler

  • Hua-Ping Xiong
  • Bo Chen
  • Wei Mao
  • Xiao-Hong Li
Peer-Reviewed Section

Abstract

Carbon fibre-reinforced silicon carbide matrix composite (Cf/SiC composite) is a new heat-resistant ceramic matrix composite, and it shows a high potential for applications in high temperature environments. However, reliable joining technology is still lacking for this material. In the present paper, the contact angles of Pd-Co-V system alloys on Cf/SiC composite were measured using the sessile drop method. On this basis, one kind of Pd-Co-V alloy, in the powder form of the mixture of elemental components was used as brazing filler metal, and Cf/SiC composite joints were achieved after brazing at 1 523 K for 20 min. The microstructure of the Cf/SiC composite joints was examined with SEM and XEDS. It was found that elements Pd and V in the filler metal participated in the interfacial reactions between the composite and the brazing filler metal. The reaction products were analysed, and the joining mechanism was discussed.

IIW-Thesaurus keywords

Brazing Carbon Composite materials Fibres Interfaces Silicon carbide Wettability 

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Copyright information

© International Institute of Welding 2012

Authors and Affiliations

  • Hua-Ping Xiong
    • 1
  • Bo Chen
    • 1
  • Wei Mao
    • 1
  • Xiao-Hong Li
    • 1
  1. 1.Laboratory of Welding and ForgingBeijing Institute of Aeronautical MaterialsBeijingP. R. of China

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