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

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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.

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Authors and Affiliations

  1. Laboratory of Welding and Forging, Beijing Institute of Aeronautical Materials, Beijing, P. R. of China

    Hua-Ping Xiong,  Bo Chen (Associate Professor),  Wei Mao &  Xiao-Hong Li

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  1. Hua-Ping Xiong
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  2. Bo Chen
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  3. Wei Mao
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  4. Xiao-Hong Li
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Xiong, HP., Chen, B., Mao, W. et al. Joining of Cf/SiC Composite With Pd-Co-V Brazing Filler. Weld World 56, 76–80 (2012). https://doi.org/10.1007/BF03321149

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