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8 条记录 (耗时 0.019 秒)

    Silicon carbide-boron carbide carbonaceous body
    1.
    发明授权
    Silicon carbide-boron carbide carbonaceous body 失效
    碳化硅 - 碳化硼碳质体

    公开(公告)号：US4518702A

    公开(公告)日：1985-05-21

    申请号：US571188

    申请日：1984-01-16

    申请人： Hisayoshi Yoshida ,  Ichitaro Ogawa ,  Tsuyoshi Hagio ,  Kazuo Kobayashi ,  Takayoshi Yamamoto

    发明人： Hisayoshi Yoshida ,  Ichitaro Ogawa ,  Tsuyoshi Hagio ,  Kazuo Kobayashi ,  Takayoshi Yamamoto

    IPC分类号： C04B35/528 ,  C04B35/56

    CPC分类号： C04B35/528

    摘要： The carbonaceous body of the invention is prepared by shaping and sintering uniform powdery mixture composed of a powder of a low-temperature coke, a powder of boron carbide and a powder of silicon carbide in such a proportion that the weight proportion of the boron carbide and the silicon carbide is in the range from 2:98 to 80:20 and the volume proportion of the coke powder and the combination of the boron carbide and silicon carbide is in the range from 50:50 to 95:5. The carbonaceous body thus obtained is highly resistant against air oxidation even at a temperature of 1400.degree. C. in addition to the outstandingly high mechanical strengths in comparison with conventional carbonaceous shaped materials such as artificial graphite.

    摘要翻译： 本发明的碳质体通过将由低温焦炭粉末，碳化硼粉末和碳化硅粉末组成的均匀的粉末状混合物按照碳化硼的重量比例 并且碳化硅在2:98至80:20的范围内，焦炭粉末和碳化硼与碳化硅的组合的体积比例在50:50至95:5的范围内。 这样得到的碳质体除了与诸如人造石墨的常规碳质材料相比，具有极高的机械强度之外，甚至在1400℃的温度下也具有高度的抗空气氧化性。

    Sliding member of graphite-boron carbides
    3.
    发明授权
    Sliding member of graphite-boron carbides 失效
    石墨 - 硼碳化物的滑动构件

    公开(公告)号：US4637884A

    公开(公告)日：1987-01-20

    申请号：US756086

    申请日：1985-07-17

    申请人： Kenji Miyazaki ,  Tsuyoshi Hagio ,  Ichitaro Ogawa ,  Hisayoshi Yoshida ,  Kazuo Kobayashi ,  Kazutsugu Kashima ,  Takashi Tada ,  Yoichiro Hayashi ,  Wataru Abe

    发明人： Kenji Miyazaki ,  Tsuyoshi Hagio ,  Ichitaro Ogawa ,  Hisayoshi Yoshida ,  Kazuo Kobayashi ,  Kazutsugu Kashima ,  Takashi Tada ,  Yoichiro Hayashi ,  Wataru Abe

    IPC分类号： C04B35/52 ,  C04B35/528 ,  C04B35/563 ,  F16C33/04 ,  F16C33/16

    CPC分类号： C04B35/528 ,  F16C33/043

    摘要： Disclosed herein is a high temperature-resistant and abrasion-resistant sliding member of graphite-boron carbides showing the friction coefficient of 0.01 to 0.13 and the specific abrasion amount of 10.sup.-7 to 10.sup.-9 mm.sup.2 /kg under the measuring conditions of the load of 20 kg/cm.sup.2 and the sliding velocity of 5 m/min at a temperature of 300.degree. C., the bending strength of 300 to 1600 kg.f/cm.sup.2 and the Shore hardness of from 45 to 60, obtained by mixing and stirring from 65 to 95% by weight of powdery carbon of an average particle size of 10 to 150 .mu.m and from 5 to 35% by weight of powdery boron carbide of an average particle size of 0.5 to 2.5 .mu.m until the powdery boron carbide is uniformly dispersed in the powdery carbon, and sintering the thus formed mixture at a temperature of 2020.degree. C. or more and less than the transition point at which the structure of carbon and boron carbide in the thus formed mixture is remarkably changed, under a pressure of 100-250 kg/cm.sup.2.

    摘要翻译： 本发明公开了一种石墨 - 硼碳化物的耐高温耐磨滑动构件，其在摩擦系数为0.01〜0.13，比例磨损量为10-7〜10-9mm2 / kg， 20℃/ cm2，滑移速度为5m / min，温度为300℃，弯曲强度为300〜1600kg·f / cm2，肖氏硬度为45〜60，混合搅拌得到 65〜95重量％的平均粒径为10〜150μm的粉末碳和5〜35重量％平均粒径为0.5〜2.5μm的粉末状碳化硼，直到粉末碳化硼为 均匀地分散在粉末碳中，并在如此形成的混合物的温度在2020℃以上并小于在这样形成的混合物中碳和碳化硼的结构显着改变的过渡点，在压力下烧结 为100-250kg / cm2。

    Pressureless sintered body of boron nitride
    5.
    发明授权
    Pressureless sintered body of boron nitride 失效
    无碱烧结硼酸盐体

    公开(公告)号：US5063184A

    公开(公告)日：1991-11-05

    申请号：US501318

    申请日：1990-03-27

    申请人： Hagio Tsuyoshi ,  Kazuo Kobayashi ,  Hisayoshi Yoshida ,  Ichitaro Ogawa ,  Hiroshi Harada ,  Hiroaki Yasunaga ,  Hiroshi Nishikawa

    发明人： Hagio Tsuyoshi ,  Kazuo Kobayashi ,  Hisayoshi Yoshida ,  Ichitaro Ogawa ,  Hiroshi Harada ,  Hiroaki Yasunaga ,  Hiroshi Nishikawa

    IPC分类号： C04B35/583

    CPC分类号： C04B35/583

    摘要： A pressureless sintered body of boron nitride contains more than 95 wt% of boron nitride. The pressureless sintered body hexagonal of boron nitride has a density of not less than 1.10 g/cm.sup.3 and a bending strength of not less than 300 kg/cm.sup.2. A process of producing the pressureless sintered body of boron nitride comprises pulverizing powders of starting feed boron nitride so that a specific surface area of each of the powders is two times or more than that of the starting feed boron nitride powder, molding the thus pulverized powders to obtain a pre-molded body and sintering the pre-molded body at a temperature of not less than 1400.degree. C. under atmospheric pressure and under non-oxidative atmosphere.

    摘要翻译： 氮化硼的无压烧结体含有超过95重量％的氮化硼。 氮化硼的无压烧结体的密度为1.10g / cm 3以上，弯曲强度为300kg / cm 2以上。 生产氮化硼的无压烧结体的方法包括粉碎原料氮化硼的粉末，使得每种粉末的比表面积是起始原料氮化硼粉末的比表面积的两倍或更多，将这样粉碎的粉末 得到预成型体，在大气压下和非氧化性气氛下，在不低于1400℃的温度下烧结预成型体。

    Process for the production of shaped articles of high density graphite
    7.
    发明授权
    Process for the production of shaped articles of high density graphite 失效
    用于生产高密度石墨成型制品的方法

    公开(公告)号：US4046863A

    公开(公告)日：1977-09-06

    申请号：US601609

    申请日：1975-08-04

    申请人： Kazuo Kobayashi ,  Ichitaro Ogawa ,  Hidemasa Honda ,  Yasuhiro Matsushita

    发明人： Kazuo Kobayashi ,  Ichitaro Ogawa ,  Hidemasa Honda ,  Yasuhiro Matsushita

    IPC分类号： C01B31/04 ,  C04B35/52 ,  C04B35/528

    CPC分类号： C04B35/52 ,  C04B35/528

    摘要： A process for the production of shaped articles of high density graphite ing excellent mold-releasing property which comprises incorporating amorphous carbon powder such as powdery coke or artificial graphite powder with about 3-20% by weight of boric acid or boron oxide as a sintering-promoting agent, and baking the mixture under a pressure of 150-500 kg/cm.sup.2 without the aid of a binding agent such as pitch. Shaped articles of high density graphite possessing excellent mechanical strength are obtained by this process.

    摘要翻译： 一种生产具有优异的脱模性能的高密度石墨成型制品的方法，其包括将无定形碳粉末如粉末状焦炭或人造石墨粉末掺入约3-20重量％的硼酸或氧化硼作为烧结 - 促进剂，并且在150-500kg / cm 2的压力下，无需借助诸如沥青的粘结剂来烘烤该混合物。 通过该方法获得具有优异机械强度的高密度石墨的成型制品。

    Carbon-silicon carbide composite material and method for the preparation thereof
    8.
    发明授权
    Carbon-silicon carbide composite material and method for the preparation thereof 失效
    碳 - 碳化硅复合材料及其制备方法

    公开(公告)号：US5326732A

    公开(公告)日：1994-07-05

    申请号：US119019

    申请日：1993-08-26

    申请人： Ichitaro Ogawa

    发明人： Ichitaro Ogawa

    IPC分类号： C04B35/528 ,  C04B35/80 ,  C04B35/58

    CPC分类号： C04B35/528 ,  C04B35/806

    摘要： Proposed is a novel composite material consisting of carbon as the matrix phase and particles of silicon carbide having an acicular or needle-like particle configuration uniformly and isotropically dispersed in the matrix phase as the reinforcing dispersed phase, in which the needle-like silicon carbide particles are formed by the in situ crystal growth from particles of .beta.-silicon carbide in a shaped body of a powder blend consisting of particles of carbon and the powder of .beta.-silicon carbide with further admixture of boron or a boron compound which promotes crystal growth of silicon carbide to have an acicular particle configuration.

    摘要翻译： 提出以碳为基体相的新型复合材料和具有针状或针状粒子构型的碳化硅颗粒构造均匀且各向同性地分散在基质相中作为增强分散相，其中针状碳化硅颗粒 通过在由碳颗粒和β-碳化硅的粉末组成的粉末共混物的成形体中的β-碳化硅颗粒的原位晶体生长形成，进一步混合硼或硼化合物，其促进晶体生长 碳化硅具有针状颗粒构型。