Vacuum brazing of carbon fiber-reinforced SiC ceramic matriz composite to niobium
Vacuum brazing of C,/SiC ceramic matrix composite to metal Nb was studied with Ag-Cu-Ti and Ti-Zr-Cu-Ni at 880℃ for 10 min and 960℃for 10 min respectively and sound joints were achieved.SEM and XEDS analyzed results indicated that,in the two kinds of joints,reaction layers were visible in the brazing seam near the C,/SiC matrix.Element Ti reacted with carbon and SiC and forming TiC and Ti-Si phase,promoting the wettability of the two brazing fillers. The three-point bend strengths of C/SiC/Nb joints using Ag-27.4Cu-4.4TiandTi-13Zr-21Cu-9Ni were 205.0 and ll5.3 MPa respectively.It is believed that, Ag-27.4Cu4.4Ti brazing filler,due to its good plasticity,can release the joint residual stress more effectively than Ti-13Zr-21Cu-9Ni.
Cf/SiC brazing reaction layer
CHEN Bo XIONG Huaping MAO Wei CHENG Yaoyong
Lab.of Welding and Forging,Beijing Institute of Aeronautical Materials,Beijing 100095,China
国际会议
The 10th China-Russia System on Advanced Materials and Technologies(第十届中俄新材料新工艺研讨会)
浙江嘉兴
英文
866-869
2009-10-20（万方平台首次上网日期，不代表论文的发表时间）