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    Process for producing fibres composed of or coated with carbides or nitrides
    1.
    发明公开
    Process for producing fibres composed of or coated with carbides or nitrides 失效
    一种用于生产纤维或用碳化物或氮化物衬里的过程。

    公开(公告)号：EP0353052A2

    公开(公告)日：1990-01-31

    申请号：EP89307609.1

    申请日：1989-07-27

    申请人： ALCAN INTERNATIONAL LIMITED

    发明人： Nadkarni, Sadashiv Kashinath ,  Jain, Mukesh Kumar

    IPC分类号： D01F9/08 ,  C04B35/56 ,  C04B35/58

    CPC分类号： C04B35/62281 ,  C04B35/6229 ,  C04B35/62839 ,  C04B35/6286 ,  C04B35/62863 ,  C04B35/62892 ,  C04B2235/3201 ,  C04B2235/3409 ,  C04B2235/3418 ,  C04B2235/424 ,  C04B2235/5248 ,  C04B2235/79 ,  D01F9/08 ,  D01F11/124 ,  D01F11/126 ,  D01F11/128 ,  Y10T428/2916 ,  Y10T428/2918

    摘要： The invention provides a process for producing fibres composed of or coated with carbides or nitrides. The process involves forming a first reaction zone (23) contain­ing microfine particles of an oxide (or oxide precursor) of silicon or a suitable metal (e.g. boron) uniformly mixed with carbon (or a carbon precursor); forming a second reaction zone (24) comprising a layer having a thickness of 1 cm or less of a porous mass having a density of 1 g/cc or less formed of short or continuous fibres made of or coated with carbon (or carbon precursor); heating the first reaction zone (23) in a non-oxidizing atmosphere to generate a gaseous sub-oxide of the silicon or metal; simultaneously heating the second reaction zone (24) so that the gaseous sub-oxide diffuses into it and reacts with the carbon to form carbide or nitride on the fibres; and separating the resulting fibres from any carbide or nitride whiskers that may have formed in the second reaction zone. Short or continuous fibres (e.g. in the form of a fabric or paper-­like sheets) consisting of or coated with carbides or nitrides can be formed in this way.

    摘要翻译： 本发明提供了用于产生构成或涂覆有碳化物或氮化物纤维的方法。 该方法涉及形成含有硅的氧化物（或氧化物前体）或合适的金属（E. G.硼）与碳均匀地混合（或碳前体）的微细颗粒的第一反应区（23）; 形成包含具有厚度为具有1克/立方厘米或制成或涂覆有碳（或碳前体）的短纤维或连续纤维的少形成的密度的多孔质1cm或更小的层的第二反应区（24） ; 在非氧化气氛中加热所述第一反应区（23），从而在硅或金属的气态副氧化物; 同时加热第二反应区（24）象气态副氧化物扩散到它，并与碳形成在纤维上的碳化物或氮化物发生反应; 和分离任何碳化物或氮化物晶须产生的纤维也可以在第二反应区中形成的。 短纤维或连续纤维（E. G.在织物或纸状片材的形式）的由或涂覆有碳化物或氮化物可以以这种方式来形成。