Abstract
With the use of Ti/Ni/Cu/Ni multiple foils as interlayer, carbon/carbon (C/C) composite was bonded to Ni-based superalloy GH3044 by partial transient liquid-phase bonding technique. The effect of bonding temperature on the microstructures and strengths of the joints was investigated. The results showed that gradient structural multiple interlayers composed of “C–Ti reaction layer/Ti–Ni intermetallic compound layer/Ni–Cu sosoloid/residual Cu layer/Ni-GH3044 diffusion layer” were formed between C/C composite and GH3044. The shear strength of the C/C composite/GH3044 joint reached the highest value of 26.1 MPa when the bonding temperature was 1,030 °C. In addition, the fracture morphology showed that the fracture mode changed with the increase of bonding temperature.
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