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.

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。

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

公开(公告)号：US5280208A

公开(公告)日：1994-01-18

申请号：US925937

申请日：1992-08-05

申请人： Osamu Komura ,  Kenji Matsunuma ,  Norio Yasuoka ,  Matsuo Higuchi ,  Masaya Miyake ,  Tetsuya Katayama ,  Akira Yamakawa

发明人： Osamu Komura ,  Kenji Matsunuma ,  Norio Yasuoka ,  Matsuo Higuchi ,  Masaya Miyake ,  Tetsuya Katayama ,  Akira Yamakawa

IPC分类号： F16C33/04 ,  F16C33/10 ,  F16C39/06 ,  H02K7/08 ,  F16C32/06 ,  H02K7/09

CPC分类号： F16C39/063 ,  F16C17/026 ,  F16C17/045 ,  F16C17/107 ,  F16C32/0402 ,  F16C32/0427 ,  F16C32/0431 ,  F16C33/043 ,  F16C33/107

摘要： A composite bearing structure can withstand high speed rotation has first, second and third bearing components. The first bearing component supports a radial impact force applied to a rotator during rotation, and is made of an inner ring (1) and an outer ring (2) of silicon nitride ceramic sintered bodies. The second bearing component supports an axial load applied to the rotator while maintaining a required clearance between itself and the rotator and is made of two permanent magnets (12, 13) positioned thrustdirectionally opposite to each other. The third bearing component maintains a radial rotational accuracy of the rotator, and is made of a radial dynamic pressure producing groove (5) provided on a cylindrical surface of the inner ring (1).

摘要翻译： 复合轴承结构可承受高速旋转，具有第一，第二和第三轴承部件。 第一轴承部件支承在转动期间施加到旋转体的径向冲击力，并由氮化硅陶瓷烧结体的内圈（1）和外圈（2）制成。 第二轴承部件支撑施加到旋转器的轴向载荷，同时在其自身和旋转体之间保持所需的间隙，并且由两个彼此相反方向相对定位的永磁体（12,13）制成。 第三轴承部件保持旋转体的径向旋转精度，并且由设置在内圈（1）的圆柱形表面上的径向动压产生槽（5）制成。

公开(公告)号：US5776600A

公开(公告)日：1998-07-07

申请号：US631666

申请日：1996-04-09

申请人： Tetsuya Katayama ,  Kaoru Murabe ,  Osamu Komura ,  Chihiro Kawai ,  Akira Yamakawa ,  Kenji Matsunuma ,  Norio Yasuoka ,  Matsuo Higuchi ,  Masaya Miyake

发明人： Tetsuya Katayama ,  Kaoru Murabe ,  Osamu Komura ,  Chihiro Kawai ,  Akira Yamakawa ,  Kenji Matsunuma ,  Norio Yasuoka ,  Matsuo Higuchi ,  Masaya Miyake

IPC分类号： C04B35/01 ,  C04B35/584 ,  C04B35/593 ,  C04B41/00 ,  C04B41/80 ,  F16C33/04 ,  F16C33/16 ,  C04B35/587

CPC分类号： C04B41/009 ,  C04B35/01 ,  C04B35/584 ,  C04B35/593 ,  C04B35/5935 ,  C04B41/0072 ,  C04B41/80 ,  F16C33/043 ,  F16C33/16 ,  C04B2111/00353 ,  Y10T428/252 ,  Y10T428/2991 ,  Y10T428/30

摘要： A slide member has a sliding surface made of ceramic and a has surface roughness of not more than 1.0 .mu.m in center line average roughness Ra. The ceramics includes a silicon nitride sintered body which contains crystal grains having a linear density of at least 35 per 30 .mu.m in length with a boundary phase volume ratio of not more than 15 volume %, and which contains pores of not more than 20 .mu.m in maximum diameter in a content of not more than 3%. In a method of manufacturing the slide member, it is possible to ensure smoothness of the sliding surface by grinding the sliding surface and thereafter heating the ceramic in an either an inert gas or atmospheric air. A slide member that can be used under severe sliding conditions of high-speed sliding or the like and that has excellent wear resistance is obtained. Even if the slide member is used for to a sliding part of a compressor or the like which employs a fluorocarbon containing no chlorine as a cooling medium, it is possible to prevent the occurrence of seizure and abnormal wear on the sliding surface.

摘要翻译： 滑动构件具有由陶瓷制成的滑动面，并且在中心线平均粗糙度Ra中具有不大于1.0μm的表面粗糙度。 陶瓷包括氮化硅烧结体，其包含长度为30μm以上的线密度为35以上，边界相体积比为15体积％以下且含有不大于20μm的孔的晶粒 m最大直径，含量不超过3％。 在制造滑动构件的方法中，可以通过研磨滑动表面并随后在惰性气体或大气中加热陶瓷来确保滑动表面的平滑度。 可以获得可以在高速滑动等的严酷滑动条件下使用且具有优异的耐磨性的滑动构件。 即使将滑动部件用于使用不含氯的氟碳化合物的压缩机等的滑动部作为冷却介质，也可以防止滑动面发生卡滞和异常磨损。

公开(公告)号：US5675201A

公开(公告)日：1997-10-07

申请号：US295623

申请日：1994-08-24

申请人： Osamu Komura ,  Tetsuya Katayama ,  Akira Yamakawa ,  Kenji Matsunuma ,  Norio Yasuoka ,  Matsuo Higuchi ,  Masaya Miyake

发明人： Osamu Komura ,  Tetsuya Katayama ,  Akira Yamakawa ,  Kenji Matsunuma ,  Norio Yasuoka ,  Matsuo Higuchi ,  Masaya Miyake

IPC分类号： F16C17/02 ,  F16C32/00 ,  F16C32/04 ,  F16C33/10 ,  F16C33/24 ,  F16C39/06 ,  H02K7/08 ,  H02K7/09

CPC分类号： F16C32/0427 ,  F16C17/107 ,  F16C32/0431 ,  F16C33/107 ,  F16C39/063

摘要： A composite bearing structure that has a high rotational accuracy and that can withstand high-speed rotation comprises first bearing means, second bearing means, third bearing means and fourth bearing means. The first bearing means supports a radial impact force which is applied to a rotator during rotation, and is formed by an inner ring (1) and an outer ring (2) consisting of silicon nitride ceramics sintered bodies. The second bearing means supports an axial load which is applied to the rotator while maintaining a prescribed clearance with the rotator, and is formed by a magnetic bearing body of two permanent magnets (12) and (13) which are thrust-directionally opposed to each other. The third bearing means maintains the radial rotational accuracy of the rotator, and is formed by a radial dynamic pressure producing groove (5) which is formed in a cylindrical surface of the inner ring (1). The fourth bearing means maintains the thrust-directional rotational accuracy of the rotator, and is formed by an air dome portion (100) which is confined in a semi-closed state by the inner ring (1), the outer ring (2) and a cover (4).

摘要翻译： PCT No.PCT / JP94 / 00002 Sec。 371日期：1994年8月24日 102（e）日期1994年8月24日PCT 1994年1月4日PCT PCT。 公开号WO94 / 16233 PCT 日期1994年7月21日具有高旋转精度并能承受高速旋转的复合轴承结构包括第一轴承装置，第二轴承装置，第三轴承装置和第四轴承装置。 第一轴承装置支撑在旋转期间施加到旋转器的径向冲击力，并且由内环（1）和由氮化硅陶瓷烧结体组成的外圈（2）形成。 第二轴承装置支撑轴向载荷，该轴向载荷与旋转体保持规定的间隙，并且由两个永磁体（12）和（13）的磁轴承体形成，该永磁体与每个 其他。 第三轴承装置维持旋转体的径向旋转精度，并且由形成在内圈（1）的圆柱形表面中的径向动压产生槽（5）形成。 第四轴承装置保持旋转体的推力定向旋转精度，并且由内圈（1），外圈（2）和外圈（1）限定在半闭合状态的空气圆顶部（100）形成， 盖（4）。

公开(公告)号：US5543371A

公开(公告)日：1996-08-06

申请号：US150189

申请日：1993-11-30

申请人： Tetsuya Katayama ,  Kaoru Murabe ,  Osamu Komura ,  Chihiro Kawai ,  Akira Yamakawa ,  Kenji Matsunuma ,  Norio Yasuoka ,  Matsuo Higuchi ,  Masaya Miyake

发明人： Tetsuya Katayama ,  Kaoru Murabe ,  Osamu Komura ,  Chihiro Kawai ,  Akira Yamakawa ,  Kenji Matsunuma ,  Norio Yasuoka ,  Matsuo Higuchi ,  Masaya Miyake

IPC分类号： C04B35/01 ,  C04B35/584 ,  C04B35/593 ,  C04B41/00 ,  C04B41/80 ,  F16C33/04 ,  F16C33/16 ,  C04B35/587

CPC分类号： C04B41/009 ,  C04B35/01 ,  C04B35/584 ,  C04B35/593 ,  C04B35/5935 ,  C04B41/0072 ,  C04B41/80 ,  F16C33/043 ,  F16C33/16 ,  C04B2111/00353 ,  Y10T428/252 ,  Y10T428/2991 ,  Y10T428/30

摘要： A slide member has a sliding surface made of ceramic and has a surface roughness of not more than 1.0 .mu.m in center line average roughness Ra. ceramic includes a silicon nitride sintered body, which contains crystal grains having a linear density of at least 35 per 30 .mu.m in length with a boundary phase volume ratio of not more than 15 volume %, and which contains pores of not more than 20 .mu.m in maximum diameter in a content of not more than 3%. In a method of manufacturing the slide member, it is possible to ensure smoothness of the sliding surface by grinding the sliding surface and thereafter heating the ceramic in either inert gas or an atmospheric air. A slide member that can be used under severe sliding conditions of high-speed sliding or the like and that has excellent wear resistance is obtained. Even if the slide member is used for a sliding part of a compressor or the like which employs a fluorocarbon containing no chlorine as a cooling medium, it is possible to prevent the occurrence of seizure and abnormal wear on the sliding surface.

摘要翻译： PCT No.PCT / JP93 / 00385 Sec。 371日期：1993年11月30日 102（e）日期1993年11月30日PCT 1993年3月29日PCT公布。 公开号WO93 / 2002500 日期：1993年10月14日滑动部件具有由陶瓷制成的滑动面，中心线平均粗糙度Ra的表面粗糙度不大于1.0μm。 陶瓷包括氮化硅烧结体，其包含长度为30μm以上的线密度为35以上，边界相体积比为15体积％以下，并且含有不大于20μm的孔的晶粒 m最大直径，含量不超过3％。 在制造滑动构件的方法中，可以通过研磨滑动表面并随后在惰性气体或大气中加热陶瓷来确保滑动表面的平滑度。 可以获得可以在高速滑动等的严酷滑动条件下使用且具有优异的耐磨性的滑动构件。 即使将滑动部件用于使用不含氯的碳氟化合物作为冷却介质的压缩机等的滑动部件，也可以防止滑动面发生卡滞和异常磨损。

公开(公告)号：US4628178A

公开(公告)日：1986-12-09

申请号：US737397

申请日：1985-05-23

申请人： Masaya Miyake ,  Yasuhiro Saito ,  Matsuo Higuchi

发明人： Masaya Miyake ,  Yasuhiro Saito ,  Matsuo Higuchi

IPC分类号： B23K35/30 ,  C22C29/06 ,  B23K26/00

CPC分类号： C22C29/067 ,  B23K35/30 ,  B22F2998/10

摘要： A tool for warm and hot forgings is proposed which is made by bonding cemented carbide to steel by applying electron beams or laser to the joint. The cemented carbide includes a hard phase of tungsten carbide and a binder metal phase containing at least one of Ni, Co and Fe, and at least one of Cr, Mo and W, the latter forming a solid solution. A process for manufacturing such a tool is also proposed in which unfocussed high-energy beams are applied to each side of the joint and focussed beams are then applied to a point slightly away from the joint toward the cemented carbide.

摘要翻译： 提出了一种用于温热锻造的工具，其通过将电子束或激光施加到接头而将硬质合金与钢结合。 硬质合金包括碳化钨的硬质相和含有Ni，Co和Fe中的至少一种以及Cr，Mo和W中的至少一种的粘结剂金属相，后者形成固溶体。 还提出了一种用于制造这种工具的方法，其中将未聚焦的高能光束施加到接头的每一侧，并且聚焦的光束然后被施加到稍微远离接头的点朝向硬质合金。

公开(公告)号：US4659508A

公开(公告)日：1987-04-21

申请号：US794675

申请日：1985-11-04

申请人： Matsuo Higuchi ,  Masaya Miyake ,  Hisao Takeuchi ,  Eiji Kamijo

发明人： Matsuo Higuchi ,  Masaya Miyake ,  Hisao Takeuchi ,  Eiji Kamijo

IPC分类号： C04B35/584 ,  C04B35/593 ,  C04B35/58 ,  C04B35/56

CPC分类号： C04B35/584 ,  C04B35/593

摘要： An electrically-conductive sintered compact of silicon nitride which is machinable by electrical discharge machining and a process to produce the same. TiN and/or TiC powder is added to a powder of silicon nitride in an amount 15-40% by volume to act as a conductivity-supplying agent while 0.01-3.0% by volume MgO and/or Al.sub.2 O.sub.3 powder is added as a sintering assistant. The mixed powders are then preformed in a desired shape and sintered in a nonoxidizing environment at 1,600.degree. C.-2,000.degree. C. to obtain a compact of silicon-nitride machinable by electrical discharge machining due to its electrical conductivity being at least 1 S.multidot.cm.sup.-1.

摘要翻译： 可通过放电加工机加工的氮化硅导电烧结体及其制造方法。 将TiN和/或TiC粉末加入15-40体积％的氮化硅粉末中，作为导电性供给剂，同时添加0.01-3.0体积％的MgO和/或Al 2 O 3粉末作为烧结助剂 。 然后将混合粉末预成形为所需形状，并在1600℃-2000℃的非氧化环境中烧结，得到可通过放电加工机加工的氮化硅致密体，因为其导电率至少为1Sxcm- 1。

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。