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    Zirconia vane for rotary compressors
    1.
    发明授权
    Zirconia vane for rotary compressors 失效
    旋转压缩机用氧化锆叶片

    公开(公告)号：US5516269A

    公开(公告)日：1996-05-14

    申请号：US412199

    申请日：1995-03-28

    申请人： Takao Nishioka ,  Akira Yamakawa ,  Matsuo Higuchi ,  Harutoshi Ukegawa

    发明人： Takao Nishioka ,  Akira Yamakawa ,  Matsuo Higuchi ,  Harutoshi Ukegawa

    IPC分类号： F04C18/356 ,  C04B35/48 ,  F01C21/08 ,  F01C21/00

    CPC分类号： F01C21/0809 ,  F04C2210/26 ,  F05C2203/0895

    摘要： A zirconia vane used in a rotary compressor, the zirconia vane being formed of a partially stabilized zirconia sintered body containing 92 through 98 molar percent of ZrO.sub.2 and being stabilized with Y.sub.2 O.sub.3, zirconia crystals constituting the zirconia sintered body having a mean grain diameter of 0.1 to 0.6 .mu.m and a maximum grain diameter of not greater than 2 .mu.m, the zirconia sintered body having a mean three-point flexural strength of not less than 120 kg/mm.sup.2 measured in conformity with JIS R1601, a surface of the zirconia sintered body in contact with a rotor of the rotary compressor having a first surface roughness in a direction of rotations of the rotor, specified by a ten-point mean roughness Rz, of not greater than 1 .mu.m and a second surface roughness in a direction perpendicular to the direction of rotation of the rotor, specified by the ten-point mean roughness Rz, of not greater than 0.6 .mu.m. The vane is light-weight and has excellent sliding properties to effectively prevent cohesion and seizure in an atmosphere of a coolant of chlorine-free like an HFC.

    摘要翻译： 用于旋转压缩机的氧化锆叶片，氧化锆叶片由部分稳定的氧化锆烧结体形成，该氧化锆烧结体含有92至98摩尔％的ZrO 2，并且用Y 2 O 3，构成氧化锆烧结体的氧化锆晶体稳定，其平均粒径为0.1至 0.6μm，最大粒径不大于2μm，氧化锆烧结体的平均三点弯曲强度不小于120kg / mm2，符合JIS R1601，氧化锆烧结体的表面 与旋转式压缩机的转子接触，该旋转压缩机的旋转压缩机的转子方向的第一表面粗糙度由十点平均粗糙度Rz指定为不大于1μm，第二表面粗糙度在垂直于 由十点平均粗糙度Rz表示的转子的旋转方向不大于0.6μm。 叶片重量轻，具有优异的滑动性能，有效地防止了像无卤素这样的无氯冷却剂的气氛中的内聚力和卡滞。

    Ceramic die for cutting and shaping lead frames and method of cleaning the same
    2.
    发明授权
    Ceramic die for cutting and shaping lead frames and method of cleaning the same 失效
    用于切割和成型引线框架的陶瓷模具及其清洁方法

    公开(公告)号：US5582215A

    公开(公告)日：1996-12-10

    申请号：US391958

    申请日：1995-02-21

    申请人： Takehisa Yamamoto ,  Takao Nishioka ,  Akira Yamakawa ,  Matsuo Higuchi

    发明人： Takehisa Yamamoto ,  Takao Nishioka ,  Akira Yamakawa ,  Matsuo Higuchi

    IPC分类号： B21D28/34 ,  B08B3/08 ,  B21D28/14 ,  B21D37/01 ,  C04B35/48 ,  H01L21/48 ,  H01L23/50 ,  H05K13/00

    CPC分类号： B21D37/01 ,  B08B3/08 ,  B21D28/14 ,  H01L21/4842 ,  H05K13/0092 ,  H01L2224/32245 ,  H01L2224/48247

    摘要： A ceramic die for cutting and shaping lead frames, in which at least a working section thereof is made of a specific ceramic material having an iron and cobalt content of less than 100 ppm in total. The ceramic die can be formed in a complex shape with a high precision and has a prolonged lifetime because of its superior mechanical properties, such as high wear resistance and high strength, and less probability of adhesion of foreign matter such as solder or the lead frame material thereto. Even if the solder or lead frame material is adhered onto the die, the adhered matter can be removed through a simple procedure in a shortened time. The die is further improved by depositing a hard carbon film onto the surface of the working section.

    摘要翻译： 一种用于切割和成型引线框架的陶瓷模具，其中至少其工作部分由铁和钴含量总计小于100ppm的特定陶瓷材料制成。 陶瓷模具可以以高精度形成复杂形状，并且由于其优异的机械性能，例如高耐磨性和高强度，并且具有较少的诸如焊料或引线框架的异物附着的可能性而具有延长的寿命 材料。 即使将焊料或引线框架材料粘附到模具上，可以通过简单的过程在缩短的时间内去除附着物质。 通过在工作部分的表面上沉积硬质碳膜来进一步改善模具。

    High strength silicon nitride sintered body and process for producing same
    3.
    发明授权
    High strength silicon nitride sintered body and process for producing same 失效
    高强度氮化硅烧结体及其制造方法

    公开(公告)号：US5328876A

    公开(公告)日：1994-07-12

    申请号：US995703

    申请日：1992-12-23

    申请人： Takao Nishioka ,  Akira Kuibira ,  Kenji Matsunuma ,  Yoshishige Takano ,  Matsuo Higuchi ,  Masaaki Honda ,  Masaya Miyake

    发明人： Takao Nishioka ,  Akira Kuibira ,  Kenji Matsunuma ,  Yoshishige Takano ,  Matsuo Higuchi ,  Masaaki Honda ,  Masaya Miyake

    IPC分类号： C04B35/597 ,  C04B35/58

    CPC分类号： C04B35/597

    摘要： A high-strength silicon nitride sintered body having a flexural strength of 100 kg/mm.sup.2 or higher and a process for producing the same are disclosed, the sintered body comprising not less than 90% by weight of a single crystalline phase of silicon aluminum oxynitride (Si.sub.6-z Al.sub.2 O.sub.z N.sub.8-z, wherein z is a number of from 0 to 4.2) having an average longer diameter of not more than 5 .mu.m and an aspect ratio of not less than 5, the crystal phase constituting a network structure in the sintered body, the balance being a crystalline or amorphous (glassy) phase comprising one or more of oxides or oxynitrides of a rare earth metal, a group 3A metal, a group 2A metal or Si, and the process comprising mixing silicon nitride powder, an organic metal salt as a first sintering aid, and at least one of a metal oxide, a metal nitride, and a metal oxynitride as a second sintering aid, either separately or as a mixture of two or more thereof, with a solvent and a surface active agent, subjecting the mixture or mixtures to ultrasonic dispersion, mixing the mixtures together followed by drying to obtain a mixed powder, molding the mixed powder, and sintering the molded article at a temperature of from 1,600.degree. C. to 2,200.degree. C. in a non-oxidative atmosphere.

    摘要翻译： 公开了一种弯曲强度为100kg / mm 2以上的高强度氮化硅烧结体及其制造方法，所述烧结体包含不小于90重量％的氮化硅铝的单晶相（ Si6-zAl2OzN8-z，其中z为0-4.2的数），平均长度不大于5μm，纵横比不小于5，构成烧结体网状结构的晶相 余量为包含稀土金属，3A族金属，2A族金属或Si族的氧化物或氮氧化物中的一种或多种的结晶或无定形（玻璃质）相，并且该方法包括将氮化硅粉末，有机金属 盐作为第一烧结助剂，以及作为第二烧结助剂的金属氧化物，金属氮化物和金属氮氧化物中的至少一种，分别地或作为其两种或多种的混合物与溶剂和表面活性剂 对混合物进行处理 或与超声分散体的混合物，将混合物混合在一起，然后干燥以获得混合粉末，模塑混合粉末，并在非氧化性气氛中在1600℃至2200℃的温度下烧结该模制品。

    Process for production of sintered silicon nitride made article
    4.
    发明授权
    Process for production of sintered silicon nitride made article 失效
    制造烧结氮化硅制品的方法

    公开(公告)号：US5225127A

    公开(公告)日：1993-07-06

    申请号：US829571

    申请日：1992-02-03

    申请人： Takao Nishioka ,  Yoshishige Takano ,  Kenji Matsunuma ,  Matsuo Higuchi ,  Masaya Miyake

    发明人： Takao Nishioka ,  Yoshishige Takano ,  Kenji Matsunuma ,  Matsuo Higuchi ,  Masaya Miyake

    IPC分类号： C04B35/593

    CPC分类号： C04B35/5935

    摘要： There is provided a process for the production of a sintered article which comprises steps ofshaping a raw material powder comprising silicon nitride,thermally treating a shaped article in a non-oxidizing atmosphere at a temperature of 1300.degree. to 1650.degree. C. for at least 2 hours to form .beta.-silicon nitride of not less than 85% calculated from X-ray diffraction patterns and to increase a relative density of the article to not less than 80%, preferably to 80 to 85 %, andsintering the thermally treated article at a temperature of 1700.degree. to 2000.degree. C.

    摘要翻译： 提供了一种生产烧结制品的方法，该方法包括以下步骤：使含有氮化硅的原料粉末成形，在1300℃至1650℃的温度下在非氧化性气氛中对成形制品进行热处理，至少 2小时以形成由X射线衍射图计算的不小于85％的β-氮化硅，并将制品的相对密度提高至不小于80％，优选至80至85％，并将热处理物品 在1700〜2000℃的温度下

    High strength silicon nitride sintered body and process for producing same
    5.
    发明授权
    High strength silicon nitride sintered body and process for producing same 失效
    高强度硅氮化物烧结体及其生产方法

    公开(公告)号：US5234642A

    公开(公告)日：1993-08-10

    申请号：US459398

    申请日：1989-12-29

    申请人： Takao Nishioka ,  Akira Kuibira ,  Kenji Matsunuma ,  Yoshishige Takano ,  Matsuo Higuchi ,  Masaaki Honda ,  Masaya Miyake

    发明人： Takao Nishioka ,  Akira Kuibira ,  Kenji Matsunuma ,  Yoshishige Takano ,  Matsuo Higuchi ,  Masaaki Honda ,  Masaya Miyake

    IPC分类号： C04B35/597

    CPC分类号： C04B35/597

    摘要： A high-strength silicon nitride sintered body having a flexural strength of 100 kg/mm.sup.2 or higher and a process for producing the same are disclosed, the sintered body comprising not less than 90% by weight of a single crystalline phase of silicon aluminum oxynitride (Si.sub.6-z Al.sub.2 O.sub.z N.sub.8-z, wherein z is a number of from 0 to 4.2) having an average longer diameter of not more than 5 .mu.m and an aspect ratio of not less than 5, the crystal phase constituting a network structure in the sintered body, the balance being a crystalline or amorphous (glassy) phase comprising one or more of oxides or oxynitrides of a rare earth metal, a group 3A metal, a group 2A metal or Si, and the process comprising mixing silicon nitride powder, an organic metal salt as a first sintering aid, and at least one of a metal oxide, a metal nitride, and a metal oxynitride as a second sintering aid, either separately or as a mixture of two or more thereof, with a solvent and a surface active agent, subjecting the mixture or mixtures to ultrasonic dispersion, mixing the mixtures together followed by drying to obtain a mixed powder, molding the mixed powder, and sintering the molded article at a temperature of from 1,600.degree. to 2,200.degree. C. in a non-oxidative atmosphere.

    Joint body of aluminum and silicon nitride and method of preparing the same
    6.
    发明授权
    Joint body of aluminum and silicon nitride and method of preparing the same 失效
    铝和氮化硅接头体及其制备方法

    公开(公告)号：US5904993A

    公开(公告)日：1999-05-18

    申请号：US648178

    申请日：1996-05-21

    申请人： Hisao Takeuchi ,  Koichi Sogabe ,  Takao Nishioka ,  Takashi Matsuura ,  Akira Yamakawa

    发明人： Hisao Takeuchi ,  Koichi Sogabe ,  Takao Nishioka ,  Takashi Matsuura ,  Akira Yamakawa

    IPC分类号： B23K20/00 ,  B23K20/02 ,  C04B37/02 ,  B23B15/04 ,  B22F7/00 ,  B23K1/19

    CPC分类号： B23K20/023 ,  B23K2203/10 ,  Y10T428/12535 ,  Y10T428/12576 ,  Y10T428/31678

    摘要： A joint body in which aluminum and silicon nitride are strongly joined with each other is provided at a low cost, thereby providing a lightweight part which is excellent in sliding property as a mechanical part of an internal combustion engine of an automobile or the like. The joint body includes a base material which is mainly composed of aluminum, and a member consisting of a silicon nitride sintered body which is substantially directly joined to the base material. A powdery or bulky base material (2) mainly composed of aluminum, and a member (1) consisting of a silicon nitride sintered body are charged in a mold and heated under pressurization, thereby joining the same with each other.

    摘要翻译： PCT No.PCT / JP95 / 01870 Sec。 371日期：1996年5月21日 102（e）日期1996年5月21日PCT提交1995年9月20日PCT公布。 公开号WO96 / 09266 日期：1996年3月28日以低成本提供铝和氮化硅彼此牢固地接合的接头体，从而提供作为汽车内燃机的机械部件的滑动性优异的轻质部件 或类似物。 接合体包括主要由铝构成的基材和由基本上直接接合到基材的氮化硅烧结体构成的部件。 主要由铝构成的粉状或体积大的基材（2）和由氮化硅烧结体构成的部件（1）加入到模具中并在加压下加热，从而将它们彼此接合。

    Method of machining silicon nitride ceramics and silicon nitride ceramics products
    8.
    发明授权
    Method of machining silicon nitride ceramics and silicon nitride ceramics products 失效
    氮化硅陶瓷和氮化硅陶瓷制品的加工方法

    公开(公告)号：US5297365A

    公开(公告)日：1994-03-29

    申请号：US921255

    申请日：1992-07-29

    申请人： Takao Nishioka ,  Kenji Matsunuma ,  Akira Yamakawa

    发明人： Takao Nishioka ,  Kenji Matsunuma ,  Akira Yamakawa

    IPC分类号： B24B1/00 ,  B24B7/22 ,  B24B19/22 ,  B24D3/00 ,  C04B35/584

    CPC分类号： B24B19/22 ,  B24B1/00

    摘要： An industrially feasible method of grinding silicon nitride ceramics, is disclosed and provides a sufficiently smooth surface. Namely, the surface has a maximum height-roughness Rmax of 0.1 microns or less and a ten-point mean roughness Rz of 0.05 microns. Further, with this method, surface damage can be repaired while grinding. The vertical cutting feed rate of a grinding wheel into a workpiece should be within the range of 0.005-0.1 micron for each rotation of the working surface of the wheel and change linearly or stepwise. The cutting speed of the grinding wheel in a horizontal (rotational) direction should be within the range of 25 to 75 m/sec. With this arrangement, the contact pressure and grinding heat that is generated between the workpiece and the hard abrasive grains during grinding are combined. In other words, mechanical and thermal actions are combined.

    摘要翻译： 公开了一种工业上可行的研磨氮化硅陶瓷的方法，并提供了足够光滑的表面。 即，表面的最大高度粗糙度Rmax为0.1微米以下，十点平均粗糙度Rz为0.05微米。 此外，通过该方法，可以在磨削时修复表面损伤。 砂轮进入工件的垂直切削进给速率应在车轮工作表面的每次旋转时在0.005-0.1微米的范围内，并且线性或逐步改变。 砂轮在水平（旋转）方向上的切割速度应在25至75米/秒的范围内。 通过这种布置，在磨削期间在工件和硬磨粒之间产生的接触压力和磨削热被组合。 换句话说，组合了机械和热动作。