63
views
0
recommends
+1 Recommend
1 collections
    2
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

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

      research-article

      Read this article at

      ScienceOpenPublisher
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Using liquid poly(methylvinyl)borosilazanes (PMVBSZ) as precursor, carbon fiber reinforced SiBCN matrix composites (C f/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 ℃, 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 C f/SiBCN composites had an oxygen content of around 1.22 wt%. Benefiting from the high ceramic yield and high efficiency of the modified PIP, C f/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 C f/SiBCN composites were 371 MPa and 12.9 MPa·m 1/2, respectively. This work provides a potential route for the fabrication of high performance C f/SiBCN composites.

          Related collections

          Author and article information

          Journal
          Journal of Advanced Ceramics
          Journal of Advanced Ceramics
          Tsinghua University Press (Tsinghua University, Beijing 100084, China )
          2226-4108
          05 September 2018
          : 07
          : 03
          : 266-275 (pp. )
          Affiliations
          aState Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
          bStructural Ceramics and Composites Engineering Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
          cUniversity of Chinese Academy of Sciences, Beijing 100049, China
          dShanghaiTech University, Shanghai 201210, China
          Author notes
          * Corresponding authors. E-mail: D. Ni, deweini@ 123456mail.sic.ac.cn
          Article
          2226-4108-07-03-266
          10.1007/s40145-018-0278-0

          This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

          Product
          Self URI: Publisher
          Categories
          Research Article

          Comments

          Comment on this article