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65 条记录 (耗时 0.022 秒)

    Silicon nitride sintered material and production process thereof
    11.
    发明授权
    Silicon nitride sintered material and production process thereof 有权
    氮化硅烧结材料及其制造方法

    公开(公告)号：US06849207B2

    公开(公告)日：2005-02-01

    申请号：US10024015

    申请日：2001-12-21

    申请人： Kouji Funaki ,  Katsura Matsubara ,  Hiroki Watanabe ,  Masaya Ito

    发明人： Kouji Funaki ,  Katsura Matsubara ,  Hiroki Watanabe ,  Masaya Ito

    IPC分类号： C04B35/584 ,  C04B35/626 ,  H01B1/04 ,  C04B35/565 ,  F23Q7/22

    CPC分类号： C04B35/584

    摘要： A silicon nitride sintered material containing a silicon nitride component and silicon carbide having an average particle size of 1 μm or less in an amount of at least 1 mass % and less than 4 mass %, based on 100 mass % of the silicon nitride component. The carbide is dispersed in the silicon nitride component, and the silicon nitride sintered material has a thermal expansion coefficient of at least 3.7 ppm/° C. between room temperature and 1,000° C. The silicon nitride component contains a rare earth element in an amount of 15-25 mass % as reduced to a certain oxide thereof and Cr in an amount of 5-10 mass % as reduced to a certain oxide thereof, and a crystalline phase is present in intergrain regions of the sintered material.

    摘要翻译： 基于100质量％的氮化硅组分，含有至少1质量％且小于4质量％的平均粒径为1μm以下的氮化硅组分和碳化硅的氮化硅烧结体。 碳化物分散在氮化硅组分中，并且氮化硅烧结材料在室温至1000℃之间的热膨胀系数至少为3.7ppm /℃。氮化硅组分含有一定量的稀土元素 为15-25质量％，其特定氧化物为Cr〜25质量％，Cr为5-10质量％，其结晶相存在于烧结体的晶间区域。

    Silicon nitride-tungsten carbide composite sintered material, process for preparing the same and glow plug
    12.
    发明授权
    Silicon nitride-tungsten carbide composite sintered material, process for preparing the same and glow plug 失效

    公开(公告)号：US06621052B2

    公开(公告)日：2003-09-16

    申请号：US10006132

    申请日：2001-12-10

    申请人： Hiroki Watanabe ,  Katsura Matsubara ,  Masaya Ito

    发明人： Hiroki Watanabe ,  Katsura Matsubara ,  Masaya Ito

    IPC分类号： F23Q722

    CPC分类号： C04B35/645 ,  C04B35/5603 ,  C04B35/5626 ,  C04B35/593 ,  F23Q7/001

    摘要： A silicon nitride—tungsten carbide composite sintered and process for preparing the same which contains silicon nitride and tungsten carbide, and is characterized in that the total in amounts of an entirety of rare earth elements as reduced to certain corresponding oxides thereof, the elements being contained in the sintered material, and excess oxygen as reduced to silicon dioxide is 6-20 mass %; the ratio, on a mol basis, of (the amounts of rare earth elements as reduced to the certain corresponding oxides thereof)/(the amounts of the rare earth elements as reduced to the corresponding oxides thereof+the amount of excess oxygen as reduced to silicon dioxide) is 0.3-0.7; a crystalline phase is present in an intergrain region of the sintered material; and an effective firing temperature range within which a flexural strength of at least 800 MPa is obtained encompasses at least 100 degrees. Also disclosed is a glow plug having a ceramic heater comprising the silicon nitride—tungsten carbide composite sintered material.

    Silicon nitride—tungsten carbide composite sintered material, production process therefor, and glow plug comprising the same
    13.
    发明授权
    Silicon nitride—tungsten carbide composite sintered material, production process therefor, and glow plug comprising the same 有权
    氮化硅 - 碳化钨复合烧结材料及其制造方法及包括该烧结材料的电热塞

    公开(公告)号：US06563089B2

    公开(公告)日：2003-05-13

    申请号：US10046546

    申请日：2002-01-16

    申请人： Hiroki Watanabe ,  Katsura Matsubara ,  Masaya Ito

    发明人： Hiroki Watanabe ,  Katsura Matsubara ,  Masaya Ito

    IPC分类号： F23Q700

    CPC分类号： C04B35/645 ,  C04B35/5626 ,  F23Q7/001 ,  F23Q2007/004 ,  H05B3/148 ,  H05B2203/027

    摘要： A silicon nitride-tungsten carbide composite sintered material which contains silicon nitride and tungsten carbide, and characterized in that in an arbitrary cross-section of the sintered material, the ratio of the area of a tungsten carbide portion to that of the entirety of the cross-section is 20-35%, and a tungsten carbide aggregation portion having a longitudinal length of at least 5 &mgr;m is present in the arbitrary cross-section. The production process includes firing raw material powder containing tungsten carbide powder and two silicon nitride powders having different particle sizes.

    摘要翻译： 一种含有氮化硅和碳化钨的氮化硅 - 碳化钨复合烧结材料，其特征在于，在烧结材料的任意横截面中，碳化钨部分的面积与全部交叉的面积的比率 截面为20-35％，纵向长度至少为5μm的碳化钨聚集部分存在于任意横截面。 该制造方法包括烧制含有碳化钨粉末的原料粉末和具有不同粒径的两个氮化硅粉末。

    Connection device for ceramic gas sensor element
    14.
    发明授权
    Connection device for ceramic gas sensor element 失效
    陶瓷气体传感器元件连接装置

    公开(公告)号：US06311543B1

    公开(公告)日：2001-11-06

    申请号：US09306376

    申请日：1999-05-06

    申请人： Takaya Yoshikawa ,  Katsuhisa Yabuta ,  Masaya Ito ,  Hisaharu Nishio

    发明人： Takaya Yoshikawa ,  Katsuhisa Yabuta ,  Masaya Ito ,  Hisaharu Nishio

    IPC分类号： G01N2712

    CPC分类号： G01N27/4071

    摘要： A connection device for a ceramic gas sensor element includes a sensor assembly and a ring member. The sensor assembly has a ceramic element with a thickness t, an electrical connection portion formed on a side of the ceramic element, and at least one electrical lead in contact with the electrical connection portion, wherein the sensor assembly defines an outer dimension at a position corresponding to the electrical connection portion. The ring member is disposed around the sensor assembly to hold the at least one electrical lead in contact with the electrical connection portion such that the ring member has an inner dimension at a position corresponding to the connection portion that is smaller than the outer dimension of the sensor element. The ring member defines an axial length L that contacts the sensor assembly such that the thickness t and the axial length L satisfy the relation 0.23≦L/t≦13.

    摘要翻译： 用于陶瓷气体传感器元件的连接装置包括传感器组件和环件。 传感器组件具有厚度为t的陶瓷元件，形成在陶瓷元件侧面的电连接部分和与电连接部分接触的至少一个电引线，其中传感器组件限定位于 对应于电连接部分。 环构件设置在传感器组件周围，以将至少一个电引线保持与电连接部分接触，使得环构件在与连接部分相对应的位置处的内部尺寸小于外部尺寸 传感元件 环构件限定与传感器组件接触的轴向长度L，使得厚度t和轴向长度L满足关系0.23 <= L /t≤13。

    Ceramic turbocharger rotor
    15.
    发明授权
    Ceramic turbocharger rotor 失效
    陶瓷涡轮转子

    公开(公告)号：US5073085A

    公开(公告)日：1991-12-17

    申请号：US450313

    申请日：1989-12-15

    申请人： Masaya Ito ,  Katsumi Miyama

    发明人： Masaya Ito ,  Katsumi Miyama

    IPC分类号： C04B37/02 ,  F02F7/00

    CPC分类号： C04B37/026 ,  F02F7/0087 ,  C04B2237/123 ,  C04B2237/125 ,  C04B2237/127 ,  C04B2237/365 ,  C04B2237/368 ,  C04B2237/406 ,  C04B2237/72 ,  C04B2237/76

    摘要： A nickel plate is brazed to a shaft of a ceramic turbine wheel by way of a brazed joint layer of the composition consisting of 20 to 70 wt % of silver, 1 to 20 wt % of palladium, 10 to 60 wt % of nickel and 1 to 10 wt % of titanium. The nickel plate is brazed to a metal shaft by interposing therebetween a tungsten base alloy plate and another nickel plate. The nickel plates, tungsten base alloy plate and metal shaft are brazed together by way of respective brazed joint layers of the composition which does not include titanium. A metal sleeve is installed on the shaft of the ceramic turbine wheel, metal shaft and the metal plates. The metal sleeve is brazed to the metal shaft by way of a brazed joint layer of the composition including less than 1 wt % of titanium. The brazed joint layer for brazing the metal sleeve and metal shaft together is formed by the filler metals for forming the brazed joint layers for brazing the nickel plates, tungsten alloy plate and metal shaft together.

    Method of forming crowned sliding surface in mechanical part
    18.
    发明授权
    Method of forming crowned sliding surface in mechanical part 失效
    在机械部分形成凸面滑动面的方法

    公开(公告)号：US4850095A

    公开(公告)日：1989-07-25

    申请号：US196682

    申请日：1988-05-20

    申请人： Shigeaki Akao ,  Masato Taniguchi ,  Masaya Ito

    发明人： Shigeaki Akao ,  Masato Taniguchi ,  Masaya Ito

    IPC分类号： B23P11/02 ,  B23P15/00 ,  F16B4/00 ,  F16H53/06

    CPC分类号： B23P15/003 ,  Y10T29/49247 ,  Y10T29/49293 ,  Y10T29/49295 ,  Y10T29/49307 ,  Y10T29/49865 ,  Y10T29/49945 ,  Y10T74/2107

    摘要： A mechanical part comprises a sliding section and a sleeve section which are prepared separately. The sliding section is made of a wear resisting material such as ceramics and formed with a planar sliding surface at one of the sides thereof. The sliding section is further formed with a joining portion at the outer periphery thereof. The sleeve section is made of metal and formed with a joining portion at the inner periphery thereof. The joining portions of the sliding section and the sleeve section are joined by interference fit or the like, whereby to allow the sliding surface of the sleeve section to be formed into a crowned shape.

    摘要翻译： 机械部件包括单独制备的滑动部分和套筒部分。 滑动部分由诸如陶瓷的耐磨材料制成，并在其一侧形成平面滑动表面。 滑动部分还在其外周形成有接合部分。 套筒部由金属制成，在其内周形成有接合部。 滑动部分和套筒部分的接合部分通过过盈配合等接合，从而允许套筒部分的滑动表面形成为凸面形状。

    Cellulose derivative and hydrogel thereof
    20.
    发明授权
    Cellulose derivative and hydrogel thereof 失效
    纤维素衍生物及其水凝胶

    公开(公告)号：US08709450B2

    公开(公告)日：2014-04-29

    申请号：US12808613

    申请日：2008-12-17

    申请人： Hiroaki Kaneko ,  Nobuyuki Endo ,  Masaya Ito

    发明人： Hiroaki Kaneko ,  Nobuyuki Endo ,  Masaya Ito

    IPC分类号： C08B11/193 ,  C08B1/00 ,  C08B11/15 ,  C08B11/12 ,  A61K9/00

    CPC分类号： A61L27/20 ,  A61L27/52 ,  A61L31/042 ,  A61L31/145 ,  C08B11/12 ,  C08L1/26

    摘要： The invention is a cellulose derivative wherein some of the carboxyl groups of the cellulose derivative carboxymethylcellulose are replaced with —CO—NH—X—CO—Y—Z, and a hydrogel of the same. In the formula, X is a C1-10 divalent hydrocarbon group, Y is a divalent group derived from polyalkylene oxide having oxygen atoms at both ends, and Z is a C1-24 hydrocarbon group or —CO—R4, where R4 is a C1-23 hydrocarbon group. The hydrogel has excellent viscoelasticity and can be injected into prescribed sites with injecting devices such as syringes, and it can thus be utilized as a medical gel or adhesion barrier.

    摘要翻译： 本发明是纤维素衍生物羧甲基纤维素的一些羧基被-CO-NH-X-CO-Y-Z代替的纤维素衍生物及其水凝胶。 在该式中，X是C 1-10二价烃基，Y是衍生自在两端具有氧原子的聚环氧烷烃，Z是C1-24烃基或-CO-R4的二价基团，其中R4是C1 -23烃基。 水凝胶具有优异的粘弹性，并且可以用诸如注射器的注射装置注射到规定的位置，因此可以用作医用凝胶或粘附屏障。