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19 条记录 (耗时 0.022 秒)

    Sintered body of silicon nitride and a process for making the same
    2.
    发明授权
    Sintered body of silicon nitride and a process for making the same 失效
    硫化硅烧结体及其制备方法

    公开(公告)号：US5081079A

    公开(公告)日：1992-01-14

    申请号：US568875

    申请日：1990-08-17

    申请人： Yoshio Ukyo ,  Shigetaka Wada

    发明人： Yoshio Ukyo ,  Shigetaka Wada

    IPC分类号： C04B35/599 ,  C04B35/584 ,  C04B35/593 ,  F28F21/04

    CPC分类号： C04B35/593 ,  C04B35/584 ,  F28F21/04

    摘要： A sintered body composed of .alpha.'-silicon nitride and .beta.'-silicon nitride, and having a surface portion which contains a greater proportion of .alpha.'-silicon nitride than its inner portion does. It has high strength and excellent wear resistance. It is produced by preparing a molded body from a sintering material, disposing about the molded body a sintering material which can form a sintered product containing a greater proportion of .alpha.'-silicon nitride than the sintered product of the molded body will, and sintering the molded body and the material disposed about it.

    Sintered body of silicon nitride
    3.
    发明授权
    Sintered body of silicon nitride 失效
    氮化硅烧结体

    公开(公告)号：US5120682A

    公开(公告)日：1992-06-09

    申请号：US631949

    申请日：1990-12-21

    申请人： Yoshio Ukyo ,  Shigetaka Wada

    发明人： Yoshio Ukyo ,  Shigetaka Wada

    IPC分类号： C04B35/599 ,  C04B35/597

    CPC分类号： C04B35/597

    摘要： A sintered body of silicon nitride composed of .alpha.'-Si.sub.3 N.sub.4 and .beta.'-Si.sub.3 N.sub.4, the former being represented by the formula Y.sub.x (Si,Al).sub.12 (O,N).sub.16 (where the value of x, which denotes the amount of occluded Y, is in the range of 0

    摘要翻译： 由α'-Si 3 N 4和β'-Si 3 N 4组成的氮化硅烧结体，前者由式Yx（Si，Al）12（O，N）16表示（其中x的值表示 封闭的Y在0

    Silicon nitride sintered body
    4.
    发明授权
    Silicon nitride sintered body 失效
    氮化硅烧结体

    公开(公告)号：US5523268A

    公开(公告)日：1996-06-04

    申请号：US361584

    申请日：1994-12-22

    申请人： Yoshio Ukyo ,  Toshio Kandori ,  Shigetaka Wada

    发明人： Yoshio Ukyo ,  Toshio Kandori ,  Shigetaka Wada

    IPC分类号： C04B35/584 ,  C04B35/577 ,  C04B35/596

    CPC分类号： C04B35/584

    摘要： A silicon nitride sintered body includes silicon nitride as a principal component, silicon carbide dispersed therein and at least one of boron and boron compounds in an amount of from 0.005 to 0.5% by weight in terms of the weight of boron with respect to the total weight of the sintered body. The addition of boron or boron compounds improves the high-temperature characteristics such as creep resistance of the sintered body.

    摘要翻译： 氮化硅烧结体包括氮化硅作为主要成分，其中分散有碳化硅，硼和硼化合物中的至少一种以相对于总重量的硼重量计为0.005至0.5重量％ 的烧结体。 硼或硼化合物的添加改善了烧结体的高温特性，如耐蠕变性。

    Tough silicon carbide composite material containing fibrous boride
    5.
    发明授权
    Tough silicon carbide composite material containing fibrous boride 失效
    含有纤维状硼化物的硬质合金复合材料

    公开(公告)号：US5034355A

    公开(公告)日：1991-07-23

    申请号：US261923

    申请日：1988-10-25

    申请人： Toshihiko Tani ,  Shigetaka Wada

    发明人： Toshihiko Tani ,  Shigetaka Wada

    IPC分类号： C04B35/565 ,  C04B35/575 ,  C04B35/80

    CPC分类号： C04B35/806 ,  C04B35/565 ,  C04B35/575

    摘要： A composite material comprises silicon carbide and a boride of at least one element of Groups IVa to VIa of the Periodic Table, at least a portion of the boride being in the form of fiber having an aspect ratio of 3 or above. The composite material has high toughness owing to the fibrous boride.The composite material is produced by molding a raw material mixture composed of silicon carbide, a substance containing at least one element of Groups IVa to VIa of the Periodic Table, at least a portion thereof being in the form of fiber having an aspect ratio of 3 or above, and a substance containing boron, and sintering the molded body.

    摘要翻译： 复合材料包括碳化硅和元素周期表第Ⅳa至Ⅵa族元素的至少一种元素的硼化物，硼化物的至少一部分呈纵横比为3或更高的纤维形式。 复合材料由于纤维状硼化物而具有高韧性。 复合材料通过将由碳化硅构成的原料混合物，含有至少一种元素周期表第IVa至VIa族元素的物质，其至少一部分为长宽比为3的纤维形成， 或以上，含有硼的物质，烧结成型体。

    Apparatus for heating a mixed gas on an internal combustion engine
    6.
    发明授权
    Apparatus for heating a mixed gas on an internal combustion engine 失效
    用于加热内燃机上的混合气体的装置

    公开(公告)号：US4489232A

    公开(公告)日：1984-12-18

    申请号：US310327

    申请日：1981-10-09

    申请人： Shigetaka Wada ,  Toshio Yamada

    发明人： Shigetaka Wada ,  Toshio Yamada

    IPC分类号： G02B1/10 ,  F02M31/135 ,  H05B3/14 ,  F02M31/12 ,  H05B3/12

    CPC分类号： H05B3/141 ,  F02M31/135 ,  Y02T10/126

    摘要： An apparatus for heating the fuel mixture of an internal combustion engine includes a cylindrical heating body, adapted to form a passageway between a fuel supply and an internal combustion engine, having a double walled structure formed by spaced inner and outer metallic cylinders. A plurality of plate-like ceramic heating elements having a positive temperature coefficient (PTC) of electrical resistance are inserted between the inner and outer cylinders and are urged into contact with the inner cylinder by a resilient spring member. The cylindrical heating body is sealed by welding, brazing, caulking or packing to form a gas-tight chamber enclosing the ceramic heating elements and isolating them from degradation by the fuel mixture. The cylindrical body is provided with an air hole communicating the chamber with an ambient air vent passage formed in an insulator member attached to the body thereby connecting the interior of the chamber and the ceramic heating elements therein to an external air supply.

    摘要翻译： 一种用于加热内燃机的燃料混合物的装置包括：圆柱形加热体，适于在燃料供应和内燃机之间形成通道，该通道具有由隔开的内外金属圆筒形成的双壁结构。 具有正电温度系数（PTC）的多个板状陶瓷加热元件插入在内筒和外筒之间，并通过弹性弹簧构件与内筒相接触。 圆柱形加热体通过焊接，钎焊，填缝或填料密封，形成封闭陶瓷加热元件的气密室，并将其与燃料混合物分解。 圆筒体设置有使腔室与连接到主体上的绝缘体构件中的环境空气通道连通的空气孔，从而将腔室内部和陶瓷加热元件连接到外部空气源。

    Barium titanate series ceramics having a positive temperature coefficient of electric resistance
    9.
    发明授权
    Barium titanate series ceramics having a positive temperature coefficient of electric resistance 失效
    具有正电阻温度系数的钛酸钡系陶瓷

    公开(公告)号：US4222783A

    公开(公告)日：1980-09-16

    申请号：US006842

    申请日：1979-01-26

    申请人： Senji Atsumi ,  Shigetaka Wada

    发明人： Senji Atsumi ,  Shigetaka Wada

    IPC分类号： C04B35/46 ,  C04B35/468 ,  H01C7/02

    CPC分类号： H01C7/025 ,  C04B35/4684 ,  H01C7/022

    摘要： Barium titanate series semiconductive ceramics having a positive temperature coefficient of electric resistance are disclosed. The ceramics consist mainly of a barium titanate series compound and contain specifically limited small amounts of titanium dioxide, silicon oxide, aluminum oxide, at least one element selected from the group consisting of rare earth elements, yttrium, bismuth, antimony, niobium, tantalum and tungsten, at least one element selected from the group consisting of manganese, copper, iron and chromium, and zinc oxide. The ceramics are low in the variance of electric resistance values and have a low water absorption and hence are low in the change of electric properties due to the lapse of time.

    摘要翻译： 公开了具有正电阻温度系数的钛酸钡系半导体陶瓷。 陶瓷主要由钛酸钡系化合物组成，并且特别限制少量的二氧化钛，氧化硅，氧化铝，至少一种选自稀土元素，钇，铋，锑，铌，钽的元素和 钨，选自锰，铜，铁和铬中的至少一种元素和氧化锌。 陶瓷的电阻值变化小，吸水率低，由于时间的流逝，电性能的变化也低。

    Oxygen concentration cell and a method of producing the same
    10.
    发明授权
    Oxygen concentration cell and a method of producing the same 失效
    氧浓度电池及其制造方法

    公开(公告)号：US4170530A

    公开(公告)日：1979-10-09

    申请号：US875566

    申请日：1978-02-06

    申请人： Tetsuo Watanabe ,  Shigetaka Wada

    发明人： Tetsuo Watanabe ,  Shigetaka Wada

    IPC分类号： G01N27/407 ,  G01N27/409 ,  G01N27/416 ,  H01M8/12 ,  G01N27/46

    CPC分类号： G01N27/4075 ,  H01M4/9066 ,  H01M4/905

    摘要： An oxygen concentration cell capable of operating at a lower temperature and having a higher response speed is disclosed. The cell consists of an oxygen ion conductive solid electrolyte provided on both of its surfaces with electrodes consisting of a porous electrically conductive layer, which is formed of a platinum group metal and contains in its pores a metal oxide formed by the thermal decomposition of an oxide-forming metal compound.

    摘要翻译： 公开了能够在较低温度下操作并具有较高响应速度的氧浓度单元。 电池由两个表面上提供的氧离子导电固体电解质组成，电极由多孔导电层组成，多孔导电层由铂族金属形成，并在其孔中含有通过氧化物热分解形成的金属氧化物 形成金属化合物。