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Journal of Inorganic Materials, Volume. 39, Issue 10, 1182(2024)

Mechanical Properties and Thermal Shock Resistance of SrAl2Si2O8 Reinforced BN Ceramic Composites

Bo WANG1...2, Delong CAI1,*, Qishuai ZHU2,3, Daxin LI2, Zhihua YANG2, Xiaoming DUAN2, Yanan LI4, Xuan WANG5, Dechang JIA2,*, and Yu ZHOU26 |Show fewer author(s)
Author Affiliations
  • 11. International Joint Laboratory of Advanced Nanomaterials of Heilongjiang Province, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
  • 22. Key Laboratory of Advanced Structural- Functional Integration Materials, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
  • 33. China Resources Cement Technology R&D Co., Ltd, Guangzhou 510000, China
  • 44. The First Military Representative Office of the Army Equipment Department in Beijing, Beijing 100072, China
  • 55. The Fourth System Design Department, Fourth Academy, China Aerospace Science and Industry Corporation Limited, Beijing 100048, China
  • 66. School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
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    Figures & Tables(9)
    Flow chart for the preparation of BN-SAS ceramic composites by hot-press sintering
    1. Flow chart for the preparation of BN-SAS ceramic composites by hot-press sintering

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    XRD patterns of BN-SAS ceramic composites sintered at different pressures
    2. XRD patterns of BN-SAS ceramic composites sintered at different pressures

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    HRTEM and TEM characterization of BN-SAS ceramic composites sintered at 10 MPa(a) HRTEM image; (b) Inverse FFT image of area A in figure (a); (c) SAED pattern of h-BN; (d) TEM image of BN-SAS ceramic composites; (e-j) Elemental analysis of the figure (d); (e) B; (f) N; (g) O; (h) Sr; (i) Al; (j) Si
    3. HRTEM and TEM characterization of BN-SAS ceramic composites sintered at 10 MPa(a) HRTEM image; (b) Inverse FFT image of area A in figure (a); (c) SAED pattern of h-BN; (d) TEM image of BN-SAS ceramic composites; (e-j) Elemental analysis of the figure (d); (e) B; (f) N; (g) O; (h) Sr; (i) Al; (j) Si

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    Fracture microstructures of BN-SAS ceramic composites sintered at different pressures(a) 10 MPa; (b) 20 MPa; (c) 30 MPa
    4. Fracture microstructures of BN-SAS ceramic composites sintered at different pressures(a) 10 MPa; (b) 20 MPa; (c) 30 MPa

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    Thermal properties of BN-SAS ceramic composites sintered at different pressures(a) Thermal expansion rate with inset showing the average CTE (α); (b) Thermal conductivity
    5. Thermal properties of BN-SAS ceramic composites sintered at different pressures(a) Thermal expansion rate with inset showing the average CTE (α); (b) Thermal conductivity

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    Residual bending strength and residual strength rate of BN-SAS composites sintered at 20 MPa as a function of thermal shock temperature difference
    6. Residual bending strength and residual strength rate of BN-SAS composites sintered at 20 MPa as a function of thermal shock temperature difference

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    Micrographs of surfaces and fracture edges of BN-SAS ceramic composites sintered at 20 MPa after thermal shock with different temperature differences(a) 600 ℃; (b) 800 ℃; (c) 1000 ℃; (d) 1200 ℃; (e) 1400 ℃; (f) Fracture edge morphology under thermal shock temperature difference of 1400 ℃
    7. Micrographs of surfaces and fracture edges of BN-SAS ceramic composites sintered at 20 MPa after thermal shock with different temperature differences(a) 600 ℃; (b) 800 ℃; (c) 1000 ℃; (d) 1200 ℃; (e) 1400 ℃; (f) Fracture edge morphology under thermal shock temperature difference of 1400 ℃

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    • Table 1.

      Density, bending strength and fracture toughness of BN-SAS ceramic composites

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      Table 1.

      Density, bending strength and fracture toughness of BN-SAS ceramic composites

      Sintering pressure/MPa Density/(g·cm-3) Bendingstrength/MPa Fracture toughness/(MPa·m1/2)
      101.9087±51.33±0.04
      202.25138±41.84±0.05
      302.33136±111.50±0.24

    • Table 2.

      Properties of the BN-SAS ceramic composites

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      Table 2.

      Properties of the BN-SAS ceramic composites

      Sintering pressure/MPaBending strength/MPa Fracture toughness/ (MPa·m1/2) Young's modulus/GPa Average CTE/ (×10−6, K−1) λ/( W·m-1·K-1, 1000 ℃) R/℃ RⅣ/μm
      1087±51.33±0.0448.472.9614.70$609(1-\nu )$$230/(1-\nu )$
      20138±41.84±0.0567.833.3312.42$613(1-\nu )$$177/(1-\nu )$
      30136±111.50±0.2466.945.045.72$404(1-\nu )$$122/(1-\nu )$
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    Bo WANG, Delong CAI, Qishuai ZHU, Daxin LI, Zhihua YANG, Xiaoming DUAN, Yanan LI, Xuan WANG, Dechang JIA, Yu ZHOU. Mechanical Properties and Thermal Shock Resistance of SrAl2Si2O8 Reinforced BN Ceramic Composites [J]. Journal of Inorganic Materials, 2024, 39(10): 1182

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    Paper Information

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    Received: Mar. 3, 2024

    Accepted: --

    Published Online: Dec. 13, 2024

    The Author Email: CAI Delong (dlcai@hit.edu.cn), JIA Dechang (dcjia@hit.edu.cn)

    DOI:10.15541/jim20240091

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology