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    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。

    Silicon carbide-boron carbide carbonaceous body
    4.
    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。