Abstract
C/C composites can be jointed to super-alloy GH3044 with Ni/Ti interlayer by partial transient liquid-phase (PTLP) bonding under vacuum. Microstructures and element distribution were characterized by SEM and EDS. Interfacial structure of Ni/GH3044 diffusion layer + residual Ni layer + Ni-Ti intermetalics + reaction layer was formed under experimental conditions. With the increase of holding time, Ni 3Ti intermetalic layer between NiTi and Ni gradually grew, while NiTi and Ni were consumed. However, large-size cracks were observed near the C/C composite/interlyer interface, resulting in unsatisfactory performance of obtained joints, with the shear strength of only 9.78 MPa.
| Original language | English |
|---|---|
| Pages (from-to) | 414-418 |
| Number of pages | 5 |
| Journal | Guti Huojian Jishu/Journal of Solid Rocket Technology |
| Volume | 35 |
| Issue number | 3 |
| State | Published - Jun 2012 |
Keywords
- C/C composites
- Formation mechanism
- GH3044
- PTLP bonding
- Thermal stress