• Journal of Inorganic Materials
  • Vol. 35, Issue 7, 817 (2020)
Xi WANG1、2, Kejie WANG1, Hui BAI1, Zhuolin SONG1、2, Bo WANG3, and Chengyu ZHANG1、2、*
Author Affiliations
  • 1Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern polytechnical University, Xi’an 710072, China
  • 2NPU-SAS Joint Research Center, Northwestern Polytechnical University, Xi’an 710072, China
  • 3School of Aeronautics, Northwestern polytechnical University, Xi’an 710072, China
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    DOI: 10.15541/jim20190450 Cite this Article
    Xi WANG, Kejie WANG, Hui BAI, Zhuolin SONG, Bo WANG, Chengyu ZHANG. Creep Properties and Damage Mechanisms of 2D-SiCf/SiC Composites Prepared by CVI[J]. Journal of Inorganic Materials, 2020, 35(7): 817 Copy Citation Text show less
    Shape and dimensions for creep specimen of 2D-SiCf/ SiC composites
    1. Shape and dimensions for creep specimen of 2D-SiCf/ SiC composites
    Creep curves at 1200 ℃ under different stresses for 2D-SiCf/SiC composites
    2. Creep curves at 1200 ℃ under different stresses for 2D-SiCf/SiC composites
    Fracture morphologies of 2D-SiCf/SiC composites at different creep conditions
    3. Fracture morphologies of 2D-SiCf/SiC composites at different creep conditions
    Crack image of creep specimen at 1200 ℃/100 MPa
    4. Crack image of creep specimen at 1200 ℃/100 MPa
    Relationship between steady state creep strain rate and stress σ, temperature T
    5. Relationship between steady state creep strain rate and stress σ, temperature T
    TEM images of as-received 2D-SiCf/SiC composite
    6. TEM images of as-received 2D-SiCf/SiC composite
    HRTEM and SAED images of SiC fiber in crept 2D-SiCf/SiC composites
    7. HRTEM and SAED images of SiC fiber in crept 2D-SiCf/SiC composites
    Grain size distributions of SiC fibers in 2D-SiCf/SiC composites at different creep conditions
    8. Grain size distributions of SiC fibers in 2D-SiCf/SiC composites at different creep conditions
    Diameter/μmDensity/(g∙cm-3)Tensile strength/GPaTensile modulus/GPa
    142.742.7270
    Table 1. Properties of the SiC fiber
    Density/(g∙cm-3)Tensile strength/MPaTensile modulus/GPaPorosity/%
    2.5225220~23
    Table 2. Properties of the SiCf/SiC composite
    Temperature/Stress/MPaRupture time/hSteady-state creep strain rate/s-1
    1200100216.06.1´10-9
    120012089.02.2´10-8
    120014050.04.5´10-8
    1300100121.04.4´10-8
    130012053.04.9´10-8
    130014022.02.0´10-7
    14001008.61.5´10-6
    Table 3. Creep properties of 2D-SiCf/SiC composites
    Xi WANG, Kejie WANG, Hui BAI, Zhuolin SONG, Bo WANG, Chengyu ZHANG. Creep Properties and Damage Mechanisms of 2D-SiCf/SiC Composites Prepared by CVI[J]. Journal of Inorganic Materials, 2020, 35(7): 817
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