Abstract:Joining samples of carbon/ carbon composites (C/ C composites) and Ni based high temperature alloy
(GH600) were fabricated by vacuum brazing with the powder of BNi68CrWB as the interlayer material. The mechanical
properties and microstructure of the joints between C/ C composite and GH600 were investigated by scanning electron
microscopes and universal material testing machines. The results show that the joining of C/ C composites to Ni
based high temperature alloy is successfully achieved by vacuum brazing process. The fracture of the joint occurs in
the C/ C composites. The shear strength at high temperature of the brazed joints rapidly decreases above 700 ℃.