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ZHANG Lixia, TIAN Chenglong, TIAN Xiaoyu, FENG Jicai, SHI Junmiao, LIANG Yingchun. Research on vacuum brazing of C/C-Re composite to Nb[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2015, 36(12): 47-50.
Citation: ZHANG Lixia, TIAN Chenglong, TIAN Xiaoyu, FENG Jicai, SHI Junmiao, LIANG Yingchun. Research on vacuum brazing of C/C-Re composite to Nb[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2015, 36(12): 47-50.
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Research on vacuum brazing of C/C-Re composite to Nb

  • 1.

    State Key Lab of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China

  • 2.

    State Key Lab of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China;Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology (Weihai), Weihai 264209, China

  • 3.

    School of Mechanical and Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China

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  • Received Date: March 16, 2014
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    • Abstract
  • The vacuum brazing of C/C-Re composite toNbwas successfully performed with the brazing fillers of Zr-Ni (atomic ratio 64:36) powder. The results show that the interface structures of joints with Zr-Ni fillers each has a total of four reaction layers. The microstructure of the C/C-Re/Zr-Ni/Nb joints is C/C-Re composite /Re/ (Re,Zr,Nb)+NiZr/NiZr2+NiZr/NiZr+Nb/Nb.Through dissolution process, the Re(Rhenium) coating became thinner and the (Re,Zr,Nb) solid solution increased. The joint mechanical properties are evaluated through joint shear strength test, and the conclusions are that the shear strength ofjoints rose up at first and then declined with the increase of brazing temperature and the extending of holding time.The optimum welding parameters are that the brazing temperature is 1 110 ℃ and the holding time is 20 min. Under the optimum welding parameters, the maximum environment temperature shear strength of joints with Zr-Ni fillers is 19 MPa.
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    • References (7)
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