Continuous method of producing silicon carbide fibers
    1.
    发明授权
    Continuous method of producing silicon carbide fibers 失效
    连续生产碳化硅纤维的方法

    公开(公告)号:US5928978A

    公开(公告)日:1999-07-27

    申请号:US890878

    申请日:1997-07-10

    CPC分类号: C04B35/571 C04B35/62272

    摘要: This invention pertains to a method for production of polycrystalline ceramic fibers from silicon oxycarbide (SiCO) ceramic fibers wherein the method comprises heating an amorphous ceramic fiber containing silicon and carbon in an inert environment comprising a boron oxide and carbon monoxide at a temperature sufficient to convert the amorphous ceramic fiber to a polycrystalline ceramic fiber. By having carbon monoxide present during the heating of the ceramic fiber, it is possible to achieve higher production rates on a continuous process.

    摘要翻译: 本发明涉及一种由碳氧化硅(SiCO)陶瓷纤维生产多晶陶瓷纤维的方法,其中该方法包括在包含氧化硼和一氧化碳的惰性环境中加热含有硅和碳的无定形陶瓷纤维,其温度足以转化 将无定形陶瓷纤维制成多晶陶瓷纤维。 通过在加热陶瓷纤维期间存在一氧化碳,可以在连续方法上实现更高的生产率。

    Process to produce silicon carbide fibers using a controlled concentration of boron oxide vapor
    2.
    发明授权
    Process to produce silicon carbide fibers using a controlled concentration of boron oxide vapor 失效
    使用受控浓度的氧化硼蒸气生产碳化硅纤维的方法

    公开(公告)号:US06261509B1

    公开(公告)日:2001-07-17

    申请号:US09541666

    申请日:2000-04-03

    IPC分类号: B28B100

    CPC分类号: C04B35/62272 C04B35/571

    摘要: A process for producing polycrystalline silicon carbide by heating an amorphous ceramic fiber that contains silicon and carbon in an environment containing boron oxide vapor. The boron oxide vapor is produced in situ by the reaction of a boron containing material such as boron carbide and an oxidizing agent such as carbon dioxide, and the amount of boron oxide vapor can be controlled by varying the amount and rate of addition of the oxidizing agent.

    摘要翻译: 一种通过在含有氧化硼蒸汽的环境中加热含有硅和碳的无定形陶瓷纤维来生产多晶碳化硅的方法。 通过含硼材料如碳化硼和二氧化碳等氧化剂的反应,原位产生氧化硼蒸汽,氧化硼蒸汽的量可以通过改变氧化剂的添加量和加入量来控制 代理商

    Polycarbosilane hydroxides and methods for their preparation
    10.
    发明授权
    Polycarbosilane hydroxides and methods for their preparation 失效
    聚碳硅烷氢氧化物及其制备方法

    公开(公告)号:US5811564A

    公开(公告)日:1998-09-22

    申请号:US992249

    申请日:1997-12-17

    IPC分类号: C07F7/08 C08G77/60

    CPC分类号: C08G77/60 C07F7/0836

    摘要: This invention pertains to polycarbosilane hydroxides which contain units of the formula ##STR1## where R is a hydrocarbon having from 1 to 20 carbon atoms and to methods for their manufacture. The polycarbosilane hydroxides may be prepared by the oxidation of a polycarbosilane.

    摘要翻译: 本发明涉及含有下式单元的聚碳硅烷氢氧化物,其中R是具有1至20个碳原子的烃及其制备方法。 聚碳硅烷氢氧化物可以通过氧化聚碳硅烷来制备。