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：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：US4556416A

公开(公告)日：1985-12-03

申请号：US605489

申请日：1984-04-30

申请人： Eiji Kamijo ,  Matsuo Higuchi

发明人： Eiji Kamijo ,  Matsuo Higuchi

IPC分类号： B01J19/00 ,  B01J12/00 ,  B01J19/08 ,  B01J19/12 ,  B22F9/14 ,  B22F9/16 ,  B22F9/30 ,  C01B21/06 ,  C01B21/064 ,  C01B21/068 ,  C01B21/072 ,  C01B21/076 ,  C01B21/082 ,  C01B31/30 ,  C01B31/36 ,  C01B33/02 ,  C01B33/03 ,  C22B9/22 ,  B22F9/00

CPC分类号： B82Y30/00 ,  B01J12/002 ,  B01J19/121 ,  B22F9/30 ,  C01B21/06 ,  C01B21/064 ,  C01B21/068 ,  C01B21/0682 ,  C01B21/072 ,  C01B21/0722 ,  C01B21/0724 ,  C01B21/0763 ,  C01B21/0765 ,  C01B21/0828 ,  C01B31/30 ,  C01B31/36 ,  C01B33/03 ,  C22B9/223 ,  B22F2998/00 ,  C01P2004/62 ,  C01P2004/64

摘要： A process and an apparatus for manufacturing a fine powder of metals or ceramics are proposed in which a mixed gas of volatile metal compound and/or evaporated metal and a reaction gas is reacted in a discharged state while heating by laser beam.

摘要翻译： 提出了一种用于制造金属或陶瓷细粉末的方法和装置，其中挥发性金属化合物和/或蒸发的金属和反应气体的混合气体在放电状态下通过激光束加热而反应。

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：US5738820A

公开(公告)日：1998-04-14

申请号：US723930

申请日：1996-10-01

申请人： Harutoshi Ukegawa ,  Matsuo Higuchi

发明人： Harutoshi Ukegawa ,  Matsuo Higuchi

IPC分类号： C04B35/584 ,  C04B35/593 ,  C04B35/597 ,  C04B35/599 ,  C04B41/00 ,  C04B35/587

CPC分类号： C04B41/009 ,  C04B35/5935 ,  C04B35/597 ,  C04B41/0072

摘要： A sintered silicon nitride-based body comprising 20% or less by weight of a grain boundary phase and the balance being a major phase of grains of silicon nitride and/or sialon, wherein the major phase contains a grain phase of a .beta.-Si.sub.3 N.sub.4 phase and/or a .beta.'-sialon phase, and a quantitative ratio of the grain phase of the .beta.-Si.sub.3 N.sub.4 phase and/or the .beta.'-sialon phase is in a range of 0.5 to 1.0 relative to the major phase; the grain boundary phase contains Re.sub.2 Si.sub.2 O.sub.7 (wherein Re represents a rare-earth element other than Er and Yb) as a first crystal component and at least one of ReSiNO.sub.2, Re.sub.3 Al.sub.5 O.sub.12, ReAlO.sub.3, and Si.sub.3 N.sub.4.Y.sub.2 O.sub.3 as a second crystal component; and a quantitative ratio of the first and second crystal components in the grain boundary phase to the grain phase of .beta.-Si.sub.3 N.sub.4 phase and/or the .beta.'-sialon phase ranges from 0.03 to 1.6. The sintered body is produced by mixing a specific sintering aid and silicon nitride-based powder, sintering the mixture and heat treating the sintered body for nucleation and crystal growth within the temperature range of from 1050.degree. to 1550.degree. C.

摘要翻译： 一种烧结氮化硅基体，其包含20重量％或更少的晶界相，余量为氮化硅和/或赛隆的晶粒的主相，其中主相含有β-Si 3 N 4相的晶相 和/或β' - 赛隆相，β-Si 3 N 4相和/或β' - 赛隆相的晶相的定量比例相对于主相为0.5〜1.0的范围。 晶界相包含作为第一结晶成分的Re 2 Si 2 O 7（其中，Re表示除Er和Yb以外的稀土元素）和作为第二结晶成分的ReSiNO 2，Re 3 Al 5 O 12，ReAlO 3和Si 3 N 4 O 2 y 2中的至少一种; 并且晶界相中的第一和第二晶体组分与β-Si 3 N 4相和/或β' - 赛隆相的晶相的定量比为0.03至1.6。 烧结体通过混合特定的烧结助剂和氮化硅基粉末，烧结混合物并在1050℃至1550℃的温度范围内对烧结体进行成核和晶体生长进行热处理。

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：US4753764A

公开(公告)日：1988-06-28

申请号：US534143

申请日：1983-09-21

申请人： Eiji Kamijo ,  Matsuo Higuchi ,  Osamu Komura

发明人： Eiji Kamijo ,  Matsuo Higuchi ,  Osamu Komura

IPC分类号： C04B35/565 ,  C04B35/584 ,  C04B35/80 ,  F02B3/06 ,  C04B35/56 ,  C04B35/58

CPC分类号： C04B35/584 ,  C04B35/565 ,  C04B35/806 ,  F02B3/06

摘要： A method for manufacturing a fiber reinforced silicon carbide or silicon nitride ceramic sintered body having silicon carbide or silicon nitride ceramic whiskers dispersed therein, which method involves mixing together silicon carbide or silicon nitride ceramic powder, whisker formation agents made up of at least one material selected from metal Si or an inorganic compound containing Si, an organic containing Si, amorphous silicon ceramic powder or a mixture of SiO.sub.2 and carbon, or Si, sintering additives, and a whisker accelerating amount of a whisker formation accelerator selected from Fe, Ni, Co, Cr, V, Ti, Ta, W or Mo; molding the mixture into a predetermined shape; heat treating the molded body at a temperature of 1300.degree. C. to 1750.degree. C. to produce silicon carbide or silicon nitride whiskers in the molded body and thereafter densifying and sintering the molded body at sintering temperatures in a non-oxidizing atmosphere. The silicon carbide and silicon nitride ceramics produced by said method have excellent heat-resistance characteristics and excellent impact and corrosion resistance, thus making these ceramics eminently suitable for structural materials where these properties are required.

摘要翻译： 一种制造分散有碳化硅或氮化硅陶瓷晶须的纤维增强碳化硅或氮化硅陶瓷烧结体的方法，该方法包括将碳化硅或氮化硅陶瓷粉末混合在一起，将至少一种材料制成的晶须形成剂 来自金属Si或含Si的无机化合物，含有有机物的Si，非晶硅陶瓷粉末或SiO 2与碳的混合物，Si，烧结助剂和晶须加速量的选自Fe，Ni，Co的晶须形成促进剂 ，Cr，V，Ti，Ta，W或Mo; 将混合物成型为预定的形状; 在1300℃至1750℃的温度下对成型体进行热处理，以在成型体中制造碳化硅或氮化硅晶须，然后在非氧化性气氛中的烧结温度下使成型体致密化并烧结。 通过该方法制造的碳化硅和氮化硅陶瓷具有优异的耐热特性和优异的耐冲击和耐腐蚀性，因此这些陶瓷特别适用于需要这些性能的结构材料。

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。

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。

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.