Advertisement

Effects of sintering temperature on mechanical properties of alumina fiber reinforced alumina matrix composites

  • Zhu ChengxinEmail author
  • Cao Feng
  • Xiang Yang
  • Peng Zhihang
Original Paper: Nano-structured materials (particles, fibers, colloids, composites, etc.)
  • 15 Downloads

Abstract

In this study, the continuous alumina fibers reinforced alumina matrix (Al2O3/Al2O3) composites were fabricated through sol–gel method at a sintering temperature range of 900–1400 °C, and their mechanical properties were analyzed separately. To explore the effects of sintering temperature on mechanical properties of composites, the high temperature properties of fibers and matrix were studied in a comprehensive manner. Our results suggested that the composites fabricated at different temperatures exhibited two different fracture features (ductile fracture and brittle fracture). Besides, the 1100 °C fabricated composites possessed the highest flexural strength of nearly 150 MPa. Al2O3 fibers displayed excellent thermal stability, and did not undergo phase transition during the preparation process. However, the grain size of fibers increased dramatically at a sintering temperature of 1200 °C, which led to a significant decrease in the mechanical properties. In the meantime, the surface morphology of fibers became very uneven because of grain coarsening. Due to the phase transition from γ-Al2O3 to α-Al2O3 at 1200 °C, the elastic modulus and microhardness of matrix increased significantly. The higher sintering temperature not only intensified the matrix but also strengthened the interface bonding, thus making the composites prone to brittle fracture. In conclusion, the optimal temperature of composites preparation should be lower than 1200 °C.

Highlights

  • The continuous alumina fibers reinforced alumina matrix (Al2O3/Al2O3) composites were prepared.

  • The variation trend of Al2O3 fiber properties with temperature was studied in detail.

  • The variation trend of Al2O3 sol properties with temperature was investigated systematically.

  • The effects of sintering temperature on mechanical properties of Al2O3/Al2O3 composites were studied comprehensively.

Keywords

Al2O3/Al2O3 composites Sol–gel Mechanical properties Microstructure 

Notes

Acknowledgements

The authors are grateful to Aid Program for Innovative Group of National University of Defense Technology and Aid Program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

References

  1. 1.
    Savino R, Criscuolo L, Martino GDD, Mungiguerra S (2018) Aero-thermo-chemical characterization of ultra-high-temperature ceramics for aerospace applications. J Eur Ceram Soc 38:2937–2953.  https://doi.org/10.1016/j.jeurceramsoc.2017.12.043 CrossRefGoogle Scholar
  2. 2.
    Li MY, Zhou X et al. (2016) The effect of the PyC interphase coating on the microwave heating sintered SiC/SiC composites J Alloy Compd 688:974–981.  https://doi.org/10.1016/j.jallcom.2016.07.288 CrossRefGoogle Scholar
  3. 3.
    Wang Y, Liu HT et al. (2015) Interface engineering of fiber-reinforced all-oxide composites fabricated by the sol–gel method with fugitive pyrolytic carbon coatings. Compos Part B Eng 75:86–94.  https://doi.org/10.1016/j.compositesb.2015.01.018 CrossRefGoogle Scholar
  4. 4.
    Nasrin N, Niranjan P et al. (2016) Oxidation behaviour of SiC/SiC ceramic matrix composites in air. J Eur Ceram Soc 36:3293–3302.  https://doi.org/10.1016/j.jeurceramsoc.2016.05.051 CrossRefGoogle Scholar
  5. 5.
    Zhuang L, Fu QG et al. (2018) Oxidation protection of C/C composites: coating development with thermally stabile SiC/PyC nanowires and an interlocking TaB2-SiC structure. Corros Sci 26:2366–2373.  https://doi.org/10.1016/j.corsci.2018.12.024 CrossRefGoogle Scholar
  6. 6.
    Xiang Y, Wang Q, Cao F, Ma YW et al. (2017) Sol–gel process and high-temperature property of SiO2/ZrO2-SiO2 composites. Ceram Int 43:854–859.  https://doi.org/10.1016/j.ceramint.2016.10.020 CrossRefGoogle Scholar
  7. 7.
    Armani CJ, Ruggles-Wrenn MB et al. (2013) Creep and microstructure of NextelTM720 fiber at elevated temperature in air and in steam. Acta Mater 61:6114–6124.  https://doi.org/10.1016/j.actamat.2013.06.053 CrossRefGoogle Scholar
  8. 8.
    Banerjee D, Rho H, Jackson HE et al. (2001) Characterization of residual stresses in asapphire-fiber-reinforced glass-matrix composite by micro-fluorescence spectroscopy. Compos Sci Technol 61:1639–1647.  https://doi.org/10.1016/S0266-3538(01)00065-3 CrossRefGoogle Scholar
  9. 9.
    Buchanan DJ, John R et al. (2008) Off-axis creep behavior of oxide/oxide NextelTM720/AS-0. Compos Sci Technol 68:1313–1320.  https://doi.org/10.1016/j.compscitech.2007.12.013 CrossRefGoogle Scholar
  10. 10.
    Jiang R, Yang LW, Liu HT et al. (2018) High-temperature mechanical properties of NextelTM610 fiber reinforced silica matrix composites. Ceram Int 44:15356–15361.  https://doi.org/10.1016/j.ceramint.2018.05.185 CrossRefGoogle Scholar
  11. 11.
    Ramdane CB, Julian-Jankowiak A, Valle R et al. (2017) Microstructure and mechanical behaviour of a Nextel™610/alumina weak matrix composite subjected to tensile and compressive loadings. J Eur Ceram Soc 37:2919–2932.  https://doi.org/10.1016/j.jeurceramsoc.2017.02.042 CrossRefGoogle Scholar
  12. 12.
    Wang Y, Cheng HF, Liu HT, Wang J (2013) Microstructure and room temperature mechanical properties of mullite fibers after heat-treatment at elevated temperatures. Mater Sci Eng A 578:287–293.  https://doi.org/10.1016/j.msea.2013.04.089 CrossRefGoogle Scholar
  13. 13.
    Jin XH, Gao L, Guo JK (2002) The structural change of diphasic mullite gel studied by XRD and IR spectrum analysis. J Eur Ceram Soc 22:1307–1311.  https://doi.org/10.1016/S0955-2219(01)00447-2 CrossRefGoogle Scholar
  14. 14.
    Dey A, Chatterjee M, Naskar MK et al. (2003) Near-net-shape fibre-reinforced ceramic matrix composites by the sol infiltration technique. Mater Lett 57:2919–2926.  https://doi.org/10.1016/S0167-577X(02)01397-6 CrossRefGoogle Scholar
  15. 15.
    Xiang Y, Wang Q, Peng ZH, Cao F (2016) High-temperature properties of 2.5D SiO2f/SiO2 composites by sol–gel. Ceram Int 42:12802–12806.  https://doi.org/10.1016/j.ceramint.2016.05.043 CrossRefGoogle Scholar
  16. 16.
    Jiang R, Yang LW, Liu HT et al. (2018) A multiscale methodology quantifying the sintering temperature dependent mechanical properties of oxide matrix composites J Oxide Am Ceram Soc 101:3168–3180.  https://doi.org/10.1111/jace.15473.sci-hub.tw/ CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Zhu Chengxin
    • 1
    Email author
  • Cao Feng
    • 1
  • Xiang Yang
    • 1
  • Peng Zhihang
    • 1
  1. 1.Science and Technology on Advanced Ceramic Fibers and Composites LaboratoryNational University of Defense TechnologyChangshaChina

Personalised recommendations