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首页> 外文期刊>Journal of Materials Science >Fine silicon carbide fibers synthesized from polycarbosilane-polyvinylsilane polymer blend using electron beam curing
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Fine silicon carbide fibers synthesized from polycarbosilane-polyvinylsilane polymer blend using electron beam curing

机译:使用电子束固化由聚碳硅烷-乙烯基硅烷聚合物共混而成的细碳化硅纤维

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摘要

A fine SiC fiber is synthesized from a polymer blend of polycarbosilane (PCS) and polyvinylsilane (PVS) with electron beam curing under vacuum. The obtained SiC fiber from the PCS-PVS blend polymer has smaller average diameter of 8.5 μm than that of 11.8 μm from PCS, and shows higher average tensile strength of 3.2 GPa than that of 2.8 GPa from PCS after heat treatment at 1673 K in Ar gas atmosphere. However, the SiC fiber from the polymer blend decreases in tensile strength after heat treatment above 1773 K due to β-SiC crystal growth near the fiber surface, because of a small amount of oxygen incorporated in the fiber.
机译:SiC细纤维是由聚碳硅烷(PCS)和聚乙烯基硅烷(PVS)的聚合物共混物在真空下电子束固化而成。从PCS-PVS共混聚合物获得的SiC纤维的平均直径为8.5μm,小于PCS的11.8μm,在Ar中于1673 K热处理后,其平均抗拉强度比PCS的2.8 GPa高出3.2 GPa。气体气氛。然而,由于掺入到纤维中的氧的量少,由于在纤维表面附近的β-SiC晶体的生长,来自聚合物共混物的SiC纤维在1773K以上的热处理后的拉伸强度降低。

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  • 来源
    《Journal of Materials Science》 |2001年第2期|357-362|共6页
  • 作者单位

    Department of Metallurgy and Materials Science College of Engineering Osaka Prefecture University;

    Department of Metallurgy and Materials Science College of Engineering Osaka Prefecture University;

    Department of Metallurgy and Materials Science College of Engineering Osaka Prefecture University;

    Takasaki Radiation Chemistry Research Establishment Japan Atomic Energy Research Institute;

    Takasaki Radiation Chemistry Research Establishment Japan Atomic Energy Research Institute;

    Takasaki Radiation Chemistry Research Establishment Japan Atomic Energy Research Institute;

    Material Science Laboratory Mitsui Chemicals Inc. Nagaura 580-32;

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