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Effect of chemical vapor infiltration on the flexural properties of C/C-SiC composites prepared by the precursor infiltration pyrolysis method

JIA Lin-tao WANG Meng-qian GUO Xiao-feng ZHU Jie LI Ai-jun PENG Yu-qing

贾林涛, 王梦千, 郭小凤, 朱界, 李爱军, 彭雨晴. CVI处理对浸渍裂解法制备C/C-SiC复合材料弯曲性能的影响. 新型炭材料(中英文), 2023, 38(6): 1127-1134. doi: 10.1016/S1872-5805(23)60732-2
引用本文: 贾林涛, 王梦千, 郭小凤, 朱界, 李爱军, 彭雨晴. CVI处理对浸渍裂解法制备C/C-SiC复合材料弯曲性能的影响. 新型炭材料(中英文), 2023, 38(6): 1127-1134. doi: 10.1016/S1872-5805(23)60732-2
JIA Lin-tao, WANG Meng-qian, GUO Xiao-feng, ZHU Jie, LI Ai-jun, PENG Yu-qing. Effect of chemical vapor infiltration on the flexural properties of C/C-SiC composites prepared by the precursor infiltration pyrolysis method. New Carbon Mater., 2023, 38(6): 1127-1134. doi: 10.1016/S1872-5805(23)60732-2
Citation: JIA Lin-tao, WANG Meng-qian, GUO Xiao-feng, ZHU Jie, LI Ai-jun, PENG Yu-qing. Effect of chemical vapor infiltration on the flexural properties of C/C-SiC composites prepared by the precursor infiltration pyrolysis method. New Carbon Mater., 2023, 38(6): 1127-1134. doi: 10.1016/S1872-5805(23)60732-2

CVI处理对浸渍裂解法制备C/C-SiC复合材料弯曲性能的影响

doi: 10.1016/S1872-5805(23)60732-2
基金项目: 国家自然科学基金项目(21676163,51602189);航空科学基金(2016ZFS6001,2017ZFS6001);上海市自然科学基金(18ZR1417700)
详细信息
    通讯作者:

    李爱军,教授. E-mail:aijun.li@shu.edu.cn

  • 中图分类号: TQ174

Effect of chemical vapor infiltration on the flexural properties of C/C-SiC composites prepared by the precursor infiltration pyrolysis method

Funds: National Natural Science Foundation of China (21676163, 51602189),Aeronautical Science Foundation of China (2016ZFS6001,2017ZFS6001) and The Shanghai Natural Science Fund (No. 18ZR1417700)
More Information
  • 摘要: 以2D叠层炭布为增强体,以掺加硅粉、炭粉和碳化硅粉3种无机粉体的糠酮树脂为前驱体,经浸渍、热压固化、炭化裂解和高温热处理过程制备出炭/炭-碳化硅(C/C-SiC)复合材料。采用多功能密度测试仪、扫描电子显微镜(SEM)、X射线衍射仪(XRD)和力学万能试验机,研究了硅粉、炭粉和碳化硅粉的掺加量以及后续化学气相渗透(CVI)处理对C/C-SiC复合材料致密度、微观结构及抗弯强度的影响。结果表明:硅粉、炭粉和碳化硅粉掺加后所形成的碳化硅颗粒对复合材料起到颗粒弥散增强的作用。具体而言,粉体掺加量越多,C/C-SiC复合材料越致密,抗弯强度越大;在三点弯曲载荷作用下,C/C-SiC复合材料呈假塑性断裂模式,并且出现层间开裂现象。对C/C-SiC复合材料进行10 h CVI处理后发现,形成的热解炭可以作为炭纤维与树脂炭基体之间的界面,弥补了树脂炭的微孔,相比于未进行CVI处理的C/C-SiC复合材料,密度最大提高了4.98%,抗弯强度最大提高了38.86%。
  • FIG. 2784.  FIG. 2784.

    FIG. 2784..  FIG. 2784.

    Figure  1.  TGA curve of furfurone resin

    Figure  2.  Preparation flow chart of C/C-SiC composites

    Figure  3.  (a) Bulk density and (b) open porosity of C/C-SiC composites with different powder content

    Figure  4.  SEM images of C/C-SiC with different powder contents

    Figure  5.  XRD patterns of C/C-SiC composites with different powder contents

    Figure  6.  Flexural strength of C/C-SiC composites with different powder contents

    Figure  7.  Flexural stress-strain curves of C/C-SiC composites with different powder contents

    Figure  8.  (a) Bulk density and (b) open porosity of C/C-SiC composites after CVI enhancement process

    Figure  9.  Flexural strength of C/C-SiC composites after CVI enhancement process

    Figure  10.  Flexural stress-strain curves of C/C-SiC composites after CVI enhancement process

    Figure  11.  Flexural modulus of C/C-SiC composites before and after CVI

    Figure  12.  PLM image of PyC deposition between resin carbon and fiber of S5 sample

    Figure  13.  Porosity distribution of S5 sample before and after CVI

    Table  1.   Powder formula of 5 groups of samples

    SpecimenC powders
    /wt%
    Si powders /wt%SiC powders /wt%
    S1000
    S2050
    S3550
    S410100
    S55510
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出版历程
  • 收稿日期:  2020-02-20
  • 修回日期:  2020-08-24
  • 网络出版日期:  2023-03-13
  • 刊出日期:  2023-11-23

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