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Applied Composite Materials

, Volume 25, Issue 2, pp 353–364 | Cite as

The Degradation Behavior of SiCf/SiO2 Composites in High-Temperature Environment

  • Xiang Yang
  • Feng Cao
  • Wang Qing
  • Zhi-hang Peng
  • Yi Wang
Article

Abstract

SiCf/SiO2 composites had been fabricated efficiently by Sol-Gel method. The oxidation behavior, thermal shock property and ablation behavior of SiCf/SiO2 composites was investigated. SiCf/SiO2 composites showed higher oxidation resistance in oxidation atmosphere, the flexural strength retention ratio was larger than 90.00%. After 1300 °C thermal shock, the mass retention ratio was 97.00%, and the flexural strength retention ratio was 92.60%, while after 1500 °C thermal shock, the mass retention ratio was 95.37%, and the flexural strength retention ratio was 83.34%. After 15 s ablation, the mass loss rate was 0.049 g/s and recession loss rate was 0.067 mm/s. The SiO2 matrix was melted in priority and becomes loosen and porous. With the ablation going on, the oxides were washed away by the shearing action of the oxyacetylene flame. The evaporation of SiO2 took away large amount of heat, which is also beneficial to the protection for SiCf/SiO2 composites.

Keywords

SiCf/SiO2 Microstructural Mechanical property Oxidation Thermal shock Ablation 

Notes

Acknowledgements

The authors are grateful to National Science Foundation of China (51402357 and 51602347) for financial support. The authors are also 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.

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Copyright information

© Springer Science+Business Media B.V. 2017

Authors and Affiliations

  • Xiang Yang
    • 1
  • Feng Cao
    • 1
  • Wang Qing
    • 1
    • 2
  • Zhi-hang Peng
    • 1
  • Yi Wang
    • 3
  1. 1.Science and Technology on Advanced Ceramic Fibers and Composites LaboratoryNational University of Defense TechnologyChangshaPeople’s Republic of China
  2. 2.The People’s Liberation Army Troops 96879BaojiPeople’s Republic of China
  3. 3.Equipment Academy of the Rocket ForceBeijingPeople’s Republic of China

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