Influence of Densification Process on Microstructure and Properties of C/C-Cu Composites
[1]WANG Handi,ZHANG Dongsheng,LI Jiangtao,et al.Influence of Densification Process on Microstructure and Properties of C/C-Cu Composites[J].Journal of Zhengzhou University (Engineering Science),2023,44(03):110-115.[doi:10.13705/j.issn.1671-6833.2022.06.013]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
44
Number of periods:
2023 03
Page number:
110-115
Column:
Public date:
2023-04-30
- Title:
- Influence of Densification Process on Microstructure and Properties of C/C-Cu Composites
- Keywords:
- C /C-Cu composite; densification process; chemical vapor infiltration; precursor impregnation pyrolysis; C /C reinforcement; tensile strength
- CLC:
- TG161
- DOI:
- 10.13705/j.issn.1671-6833.2022.06.013
- Abstract:
- In order to explore the effect of densification process on the microstructure and properties of C/C-Cu composite, the 2.5D needle-punched carbon felt was densified by chemical vapor infiltration (CVI) and precursor impregnation pyrolysis (PIP) to obtain C/C reinforcements filled with pyrolytic carbon and resin carbon, respectively. C/C-Cu composite was prepared by vacuum infiltration process, and the microstructure analysis and performance test were carried out. The results showed that the TiC interface layer in the C/C-Cu composite prepared by CVI process was thinner, and the pyrolytic carbon had a better protection effect on the carbon fiber. The resistivity and compressive strength in the vertical (parallel) direction were 0.72(0.63)μΩ·m, 367.61(326.87)MPa, respectively.And the tensile strength is 62.54 MPa. Its electrical conductivity, compressive strength, tensile strength, and plasticity were better than those of PIP process. The failure mechanism was fiber pull-out failure. The hardness value of C/C-Cu composite prepared by CVI process was 77.28 HBW, which was slightly lower than that of PIP process (81.59 HBW), but the difference between them was small. In conclusion, the CVI densification process was more suitable for the preparation of C/C reinforcements of C/C-Cu composites.
- References:
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Last Update:
2023-05-09