4.7 Article

In-situ growth of SiC nanostructures and their influence on anti-oxidation capability of C/SiC composites

Journal

CORROSION SCIENCE
Volume 124, Issue -, Pages 71-79

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2017.05.008

Keywords

C/SiC composite; SiC nanostructures; Oxidation resistance; Environmental barrier coating

Funding

  1. Research Fund for the Doctoral Program of Higher Education of China [20130041110013]
  2. China Postdoctoral Science Foundation [2016M600201]
  3. Aviation Science Foundation of China [2016ZF63007]
  4. Project Based Personnel Exchange Program
  5. China Scholarship Council
  6. German Academic Exchange Service

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High purity SiC nanostructures were grown in situ on the surfaces of C/SiC composites by the chemical vapor reaction route to improve the anti-oxidation capability of C/SiC composites. It was found that the SiC nanostructures formed a dense cluster with a thickness of about 20 mu m. The nanostructures mainly included nanopartides and nanorods. The oxidation tests found that the SiC nanostructures could significantly improve the anti-oxidation capability of C/SiC composites, particularly, at the temperature beyond 900 degrees C. The improvement of the anti-oxidation capability of the C/SiC composites was attributed to the formation of a silica layer.

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