高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (S1): 212.

• Chemistry in Materials Sciences • 上一篇    下一篇

Synthesis of SiC Fibers by Pyrolysis of Polycarbosilane Precursor Fibers Cured by γ-ray Irradiation

XU Yun-Shu, FU Yi-Bei, HUA De-Geng, SONG Yong-Cai   

  1. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, China 621900
  • 出版日期:2000-12-31 发布日期:2000-12-31

Synthesis of SiC Fibers by Pyrolysis of Polycarbosilane Precursor Fibers Cured by γ-ray Irradiation

XU Yun-Shu, FU Yi-Bei, HUA De-Geng, SONG Yong-Cai   

  1. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, China 621900
  • Online:2000-12-31 Published:2000-12-31

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摘要：

SiC ceramics fibers reinforced metal and ceramics composite materials have important application foreground in the area of space flight, inner wall of fusion reactor and new engine cylinders, The method[1] to fabricate SiC fibers by pyrolysis from organic polycarbosilane precursor fibers is an applicable technology, But oxygen must be used to cure the precursor fibers,and the residual SiO2 in the final SiC fibers seriously affect the high temperature resistant properties, In recent years, other curing methods[2] were explored to improve SiC fiber's properties, Previous results[3] showed that using electron beam to irradiate polycarbosilane fibers in various atmosphere.

Abstract:

SiC ceramics fibers reinforced metal and ceramics composite materials have important application foreground in the area of space flight, inner wall of fusion reactor and new engine cylinders, The method[1] to fabricate SiC fibers by pyrolysis from organic polycarbosilane precursor fibers is an applicable technology, But oxygen must be used to cure the precursor fibers,and the residual SiO2 in the final SiC fibers seriously affect the high temperature resistant properties, In recent years, other curing methods[2] were explored to improve SiC fiber's properties, Previous results[3] showed that using electron beam to irradiate polycarbosilane fibers in various atmosphere.

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