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不同ZrC含量的(C/C)/SiC-ZrC复合材料的抗烧蚀性能

王玲玲 闫联生 郭春园 张宏亮 王坤杰

王玲玲, 闫联生, 郭春园, 等. 不同ZrC含量的(C/C)/SiC-ZrC复合材料的抗烧蚀性能[J]. 复合材料学报, 2020, 37(9): 2250-2257. doi: 10.13801/j.cnki.fhclxb.20200110.003
引用本文: 王玲玲, 闫联生, 郭春园, 等. 不同ZrC含量的(C/C)/SiC-ZrC复合材料的抗烧蚀性能[J]. 复合材料学报, 2020, 37(9): 2250-2257. doi: 10.13801/j.cnki.fhclxb.20200110.003
WANG Lingling, YAN Liansheng, GUO Chunyuan, et al. Anti-ablative property of (C/C)/SiC-ZrC composites with different ZrC content[J]. Acta Materiae Compositae Sinica, 2020, 37(9): 2250-2257. doi: 10.13801/j.cnki.fhclxb.20200110.003
Citation: WANG Lingling, YAN Liansheng, GUO Chunyuan, et al. Anti-ablative property of (C/C)/SiC-ZrC composites with different ZrC content[J]. Acta Materiae Compositae Sinica, 2020, 37(9): 2250-2257. doi: 10.13801/j.cnki.fhclxb.20200110.003

不同ZrC含量的(C/C)/SiC-ZrC复合材料的抗烧蚀性能

doi: 10.13801/j.cnki.fhclxb.20200110.003
基金项目: 国家自然科学基金(21676163)
详细信息
    通讯作者:

    王玲玲,硕士,高级工程师,研究方向为碳纤维增强陶瓷基复合材料性能 E-mail:1985wllzpz@sina.com

  • 中图分类号: TB332

Anti-ablative property of (C/C)/SiC-ZrC composites with different ZrC content

  • 摘要: 采用先驱体转化(PIP)法制备了不同ZrC含量的(C/C)/SiC-ZrC复合材料,考察了ZrC含量对复合材料微观结构和抗烧蚀性能的影响。结果表明,氧乙炔烧蚀600 s后,(C/C)/SiC复合材料表面疏松,出现了较大的烧蚀凹坑;而(C/C)/SiC-ZrC复合材料表面相对较致密,被白色氧化物质覆盖,烧蚀率均有所降低。在较低的ZrC含量下,(C/C)/SiC-ZrC复合材料表面形成ZrO2-SiO2二元共熔体系氧化膜,有效抑制氧化性气氛向复合材料内部渗透,同时氧化物不断熔化和挥发,降低了复合材料烧蚀表面的温度;而当ZrC体积分数为12.4vol%时,在烧蚀过程中(C/C)/SiC-ZrC复合材料表面能形成一个ZrO2外层/SiO2内层的双层结构保护膜,ZrO2是一种优异的热障材料,且导热系数较低,使烧蚀过程中烧蚀区域热扩散降低,因此(C/C)/SiC-ZrC复合材料表现为较高的表面温度,但双层氧化膜阻挡有氧气氛进一步进入复合材料内部,使复合材料表现出优异的抗烧蚀性能。

     

  • 图  1  (C/C)/SiC-ZrC复合材料的XRD图谱

    Figure  1.  XRD patterns of (C/C)/SiC-ZrC composites

    图  2  (C/C)/SiC-ZrC复合材料的SEM图像((a)~(c))及EDS图谱((d)~(f))

    Figure  2.  SEM images ((a)–(c)) and EDS spectra((d)–(f)) of (C/C)/SiC-ZrC composites

    图  3  (C/C)/SiC和(C/C)/SiC-ZrC复合材料烧蚀后的照片

    Figure  3.  Photographs of (C/C)/SiC and (C/C)/SiC-ZrC composites after ablation((a) (C/C)/SiC; (b) (C/C)/SiC-ZrC-1#; (c) (C/C)/SiC-ZrC-2#; (d) (C/C)/SiC-ZrC-3#)

    图  4  (C/C)/SiC-ZrC-1#复合材料烧蚀中心的SEM图像

    Figure  4.  SEM images of ablation left of (C/C)/SiC-ZrC-1# composites((a) glassy mixture; (b) surface fibers)

    图  5  (C/C)/SiC-ZrC-2#复合材料烧蚀中心的SEM图像

    Figure  5.  SEM images of ablation left of (C/C)/SiC-ZrC-2# composites((a) glassy mixture; (b) surface fibers)

    图  6  (C/C)/SiC-ZrC-3#复合材料烧蚀中心的SEM图像

    Figure  6.  SEM images of ablation left of (C/C)/SiC-ZrC-3# composites((a) glassy mixture; (b) surface fibers)

    图  7  图4~图6中(C/C)/SiC-ZrC复合材料的两种氧化物的EDS图谱

    Figure  7.  EDS spectra of two oxidates of (C/C)/SiC-ZrC composites in Fig.4Fig.6((a) A#; (b) B#)

    图  8  (C/C)/SiC和(C/C)/SiC-ZrC复合材料烧蚀中心的表面温度

    Figure  8.  Surface temperature of ablation left of (C/C)/SiC and (C/C)/SiC-ZrC composites

    表  1  (C/C)/SiC-ZrC复合材料各组分的体积分数

    Table  1.   Volume fraction of different components of (C/C)/SiC-ZrC composites

    SampleDensity/(g·cm3)Volume fraction/vol%Porosity/%
    VfVCVSiCVZrC
    (C/C)/SiC 1.820 24.5 38.9 28.8 0 7.83
    (C/C)/SiC-ZrC-1# 1.861 24.3 38.9 27.8 4.02 4.98
    (C/C)/SiC-ZrC-2# 1.870 24.0 38.9 25.1 7.22 4.78
    (C/C)/SiC-ZrC-3# 1.950 23.5 38.9 21.3 12.40 3.90
    Notes: Vf—Volume fraction of carbon fiber; VC—Volume fraction of pyrolytic carbon; VSiC—Volume fraction of SiC; VZrC—Volume fraction of ZrC fraction of SiC; VZrC—Volume fraction of ZrC.
    下载: 导出CSV

    表  2  (C/C)/SiC和(C/C)/SiC-ZrC复合材料的线烧蚀率、质量烧蚀率及烧蚀深度

    Table  2.   Linear ablation rate, mass ablation rate and ablation depth of (C/C)/SiC and (C/C)/SiC-ZrC composites

    SampleAblation time/sLinear ablation rate/(mm·s–1)Mass ablation rate/(g·s–1)Ablation depth/mm
    (C/C)/SiC 600 0.0047 0.0033 2.79
    (C/C)/SiC-ZrC-1# 600 0.0027 0.0019 1.61
    (C/C)/SiC-ZrC-2# 600 0.0019 0.0016 1.14
    (C/C)/SiC-ZrC-3# 600 0.0012 0.0004 0.72
    下载: 导出CSV
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出版历程
  • 收稿日期:  2019-10-23
  • 录用日期:  2019-12-14
  • 网络出版日期:  2020-01-10
  • 刊出日期:  2020-09-15

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