Brazing of C/C composites and Ni-based alloy using interlayer

International Symposium on Interfacial Joining and Surface Technology 2013

Ikeshoji, Toshi-Taka^1 ; Tokunaga, Tatsuya^1 ; Suzumura, Akio^1 ; Yamazaki, Takahisa^1

Mechanical and Aerospace Engineering, Tokyo Institute of Technology, O-okayama 212-1, Meguro-Ku, Tokyo

152-8552, Japan^1

关键词: Brazing filler alloys;    Brazing fillers;    Brazing interface;    Brazing process;    Graphite matrix;    Layer thickness;    SEM observation;    Strength values;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/61/1/012013/pdf
DOI  :  10.1088/1757-899X/61/1/012013

来源: IOP

【 摘 要 】

The brazing of C/C composites and Inconel-600 Ni-based heat resistant alloy was conducted using Fe-Ni-Cr-P-Si brazing filler alloy with inserting various thickness of Nb foil as stress relief interlayer. SEM observation of cross section of brazing interface revealed that Nb foil was resolved into the brazing filler layer on C/C composites side. Nb diffused to the surface of C/C composites and acted as the active metal element to enhance the wettability of molten metal on graphite matrix of C/C composites during the brazing process. The variation in shear strength values of the brazed joint with Nb layer thickness suggested that the Nb layer should be remained at least 100 μm.