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Journal of Advanced Ceramics

, Volume 7, Issue 3, pp 266–275 | Cite as

3D Cf/SiBCN composites prepared by an improved polymer infiltration and pyrolysis

  • Qi Ding
  • Dewei Ni
  • Zhen Wang
  • Hao Zhong
  • Hongda Wang
  • Haijun Zhou
  • Yanmei Kan
  • Shaoming Dong
Open Access
Research Article
  • 40 Downloads

Abstract

Using liquid poly(methylvinyl)borosilazanes (PMVBSZ) as precursor, carbon fiber reinforced SiBCN matrix composites (Cf/SiBCN) were fabricated by a modified polymer infiltration and pyrolysis (PIP) process. With dicumyl peroxide added as cross-linking agent, the PMVBSZ could be solidified at a low temperature of 120 °C, leading to a high ceramic yield of ~70%. The cross-linking mechanism and ceramization processes of the precursor were investigated in detail. Moreover, a modified infiltration technology was developed, which improved the efficiency and protected the precursor against moist air during PIP. Consequently, the obtained Cf/SiBCN composites had an oxygen content of around 1.22 wt%. Benefiting from the high ceramic yield and high efficiency of the modified PIP, Cf/SiBCN composites with an open porosity of ~10% and uniform microstructure were obtained after only 7 cycles of PIP. The flexural strength and fracture toughness of the derived Cf/SiBCN composites were 371 MPa and 12.9 MPa·m1/2, respectively. This work provides a potential route for the fabrication of high performance Cf/SiBCN composites.

Keywords

Cf/SiBCN ceramic matrix composites (CMCs) polymer infiltration and pyrolysis (PIP) dicumyl peroxide (DCP) 

Notes

Acknowledgements

The financial supports from the National Key Research and Development Program of China (No. 2017YFB0703200), National Natural Science Foundation of China (No. 51702341), Chinese Academy of Sciences Innovative Funding (No. CXJJ-17-M169), and CAS Pioneer Hundred Talents Program are greatly acknowledged.

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Copyright information

© The Author(s) 2018

Authors and Affiliations

  • Qi Ding
    • 1
    • 2
    • 3
    • 4
  • Dewei Ni
    • 1
    • 2
  • Zhen Wang
    • 1
    • 2
  • Hao Zhong
    • 1
    • 2
  • Hongda Wang
    • 1
    • 2
  • Haijun Zhou
    • 1
    • 2
  • Yanmei Kan
    • 1
    • 2
  • Shaoming Dong
    • 1
    • 2
  1. 1.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of CeramicsChinese Academy of SciencesShanghaiChina
  2. 2.Structural Ceramics and Composites Engineering Research Center, Shanghai Institute of CeramicsChinese Academy of SciencesShanghaiChina
  3. 3.University of Chinese Academy of SciencesBeijingChina
  4. 4.ShanghaiTech UniversityShanghaiChina

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