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    High modulus boron nitride fibers
    3.
    发明授权
    High modulus boron nitride fibers 失效
    高模量氮化硼纤维

    公开(公告)号：US3668059A

    公开(公告)日：1972-06-06

    申请号：US3668059D

    申请日：1971-01-08

    Applicant: CARBORUNDUM CO

    Inventor： ECONOMY JAMES ,  LIN RUEY-YUAN

    IPC: B29C70/10 ,  C01B21/064 ,  C04B35/622 ,  C22C49/00 ,  C01B21/06 ,  B32B15/02 ,  C01G57/00

    CPC classification number: C01B21/0646 ,  B29C70/10 ,  B29K2707/02 ,  B29K2709/04 ,  C01B21/064 ,  C01P2004/10 ,  C01P2006/80 ,  C04B35/62227 ,  C22C49/00 ,  Y10S428/902 ,  Y10S428/903 ,  Y10T428/2904 ,  Y10T428/2916

    Abstract: Boric oxide fibers having a maximum diameter of about 10 microns are heated in an ammonia atmosphere under such conditions as to produce partially nitrided fibers consisting essentially of B, N, O and H wherein the N is present to the extent of from about 35 percent to about 55 percent. The partially nitrided fibers are then heated in an inert atmosphere at a temperature of at least about 1800*C while simultaneously subjecting the fibers to sufficient longitudinal tension as to at least prevent longitudinal shrinkage of the fibers and preferably to cause elongation of the fibers during heating. The resulting fibers, consisting essentially of boron nitride, are of high purity and are characterized by a relatively high Young''s modulus of elasticity, which renders them especially suitable for reinforcing plastic, ceramic or metal matrices in the preparation of fiber reinforced composites.

    Abstract translation: 最大直径为约10微米的氧化硼纤维在氨气氛中加热，以产生基本上由B，N，O和H组成的部分氮化纤维，其中N存在的程度为约35％至 约55％。 然后将部分渗氮的纤维在至少约1800℃的温度的惰性气氛中加热，同时使纤维具有足够的纵向张力，至少防止纤维的纵向收缩，并且优选在加热期间引起纤维的伸长 。 得到的纤维基本上由氮化硼组成，具有高纯度，其特征在于相对较高的杨氏弹性模量，使得它们特别适用于在制备纤维增强复合材料时增强塑料，陶瓷或金属基质。

    {60 -MoC superconductor fibers
    5.
    发明授权
    {60 -MoC superconductor fibers 失效
    {60 -MoC超导体纤维

    公开(公告)号：US3897542A

    公开(公告)日：1975-07-29

    申请号：US42546073

    申请日：1973-12-17

    Applicant: CARBORUNDUM CO

    Inventor： ECONOMY JAMES ,  SMITH WILLIAM D

    IPC: C04B41/45 ,  D01F11/12 ,  H01L39/12 ,  H01L39/24 ,  C01B31/34

    CPC classification number: C04B41/009 ,  C04B41/4584 ,  D01F11/126 ,  H01L39/12 ,  H01L39/2403 ,  Y10S505/81 ,  Y10S505/812 ,  Y10S505/815 ,  C04B14/386

    Abstract: Alpha -MoC, having a face-centered-cubic crystal structure, can be prepared in fiber form by subjecting a fiber having a surface comprising dimolybdenum monocarbide to an electric voltage sufficient to raise momentarily the temperature of the fiber surface to a temperature at which the Alpha -MoC is the most stable thermodynamically. The fiber so produced can have a carbon core, or the fiber can be entirely converted to Alpha -MoC. This fiber is useful, for example, as a superconductor material for such applications as windings on magnets. The precursor fiber having a surface comprising dimolybdenum monocarbide can be produced by reacting a carbon fiber with hydrogen and molybdenum pentachloride in a reaction furnace.

    Abstract translation: 具有面心立方晶体结构的α-MOC可以通过将具有包含二钼单体的表面的纤维经受足以将纤维表面的温度暂时升高到一定温度的电压而以纤维形式制备， α-MoC是热力学上最稳定的。 如此生产的纤维可以具有碳芯，或者纤维可以完全转化成α-MoC。 该光纤例如可用作用于例如磁体上的绕组的超导体材料。 具有包含二钼单碳酸酯的表面的前体纤维可以通过碳纤维与氢和五氯化钼在反应炉中反应来制备。

    Refractory fibers and method of producing same
    7.
    发明授权
    Refractory fibers and method of producing same 失效
    耐火纤维及其生产方法

    公开(公告)号：US3630766A

    公开(公告)日：1971-12-28

    申请号：US3630766D

    申请日：1969-11-25

    Applicant: CARBORUNDUM CO

    Inventor： ECONOMY JAMES ,  MATKOVICH VLADO I

    IPC: C22C49/00 ,  C04B35/58

    CPC classification number: C04B35/6229 ,  C04B35/62286 ,  C22C49/00

    Abstract: Boron nitride fibers having a maximum diameter of about 10 microns are heated at a temperature of at least about 1,100* C. in a gaseous atmosphere consisting essentially of hydrogen and a halide of a transition metal selected from the group consisting of titanium, niobium, zirconium, tantalum and hafnium. The fibers are thereby converted to refractory fibers which consist essentially of the corresponding transition metal nitride and from about 2 percent to about 10 percent boron.

    Boron nitride fiber manufacture
    8.
    发明授权
    Boron nitride fiber manufacture 失效

    公开(公告)号：US3620780A

    公开(公告)日：1971-11-16

    申请号：US3620780D

    申请日：1968-11-18

    Applicant: CARBORUNDUM CO

    Inventor： ECONOMY JAMES ,  ANDERSON RAYMOND V

    IPC: C01B21/064 ,  C04B35/622 ,  C04B35/58 ,  C04B35/14

    CPC classification number: C01B21/064 ,  C01P2004/03 ,  C01P2004/10 ,  C01P2004/61 ,  C01P2006/10 ,  C04B35/62227 ,  C04B35/62231

    Abstract: Fibers incorporating a boron and nitrogen containing composition are produced by reacting, with a nitrogen and hydrogen containing composition, fibers having a maximum diameter of about 20-30 microns and incorporating substantially throughout their thickness a boron and oxygen containing composition. Preferably, boric oxide fibers having a maximum diameter of about 10 microns are heated in an ammonia atmosphere according to a suitable temperature program to produce fibers consisting essentially of a boron nitride composition. Fibers may also be produced consisting of boron nitride and other constituents such as silica. Fibers produced according to the invention are useful for a wide variety of purposes including thermal and electrical insulation, fabrication of textiles and reinforcement of plastics, ceramics and metals.

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