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81. 发明授权

US5584745A Method of machining silicon nitride ceramics and silicon nitride ceramics products 失效
标题翻译：氮化硅陶瓷和氮化硅陶瓷制品的加工方法
公开(公告)号：US5584745A
公开(公告)日：1996-12-17
申请号：US162302
申请日：1993-12-06
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 work piece 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 work piece 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。研磨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中在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料颗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。

82. 发明授权

US5582215A Ceramic die for cutting and shaping lead frames and method of cleaning the same 失效
标题翻译：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。

83. 发明授权

US5533930A Apparatus for producing a silicon nitride sintered body 失效
标题翻译：氮化硅烧结体的制造装置
公开(公告)号：US5533930A
公开(公告)日：1996-07-09
申请号：US219719
申请日：1994-03-29
申请人： Yasushi Tsuzuki , Shin-ichi Yamagata , Akira Yamakawa
发明人： Yasushi Tsuzuki , Shin-ichi Yamagata , Akira Yamakawa
IPC分类号： C04B35/593 , C04B35/64 , F27B5/04 , F27B21/00 , F27B7/28
CPC分类号： F27B5/04 , C04B35/5935 , C04B35/64 , F27B21/00
摘要： Provided is an apparatus for producing a silicon nitride sintering body made of a furnace including a heater source. The furnace includes a furnace core chamber defined by at least one partition inside the furnace to prevent an atmosphere containing more than about 30 ppm of carbon monoxide from contacting said silicon nitride sintered body. At least an inner surface of the partition is made of a carbon-free heat-proof material which prevents formation of carbon monoxide gas in an atmosphere in contact with the silicon nitride sintered body during sintering. The furnace also includes a gas supply pipe for supplying an N.sub.2 gas or an inactive gas including an N.sub.2 gas into the furnace core. Also provided is a sintering case made of a vessel defining a sintering atmosphere. The vessel has an opening for loading an object to be sintered into the vessel. At least an inner surface of the vessel is made of a carbon-free heat proof material which prevents the formation of carbon monoxide gas in the sintering atmosphere. The vessel also includes a lid for covering the opening. At least an inner surface of the lid is made of a carbon-free heat proof material which prevents the formation of carbon monoxide gas in the sintering atmosphere.
摘要翻译：提供一种用于制造由包括加热器源的炉制成的氮化硅烧结体的设备。该炉包括由炉内的至少一个隔板限定的炉芯室，以防止含有大于约30ppm的一氧化碳的气氛与所述氮化硅烧结体接触。隔板的至少内表面由无碳的耐热材料制成，其防止在烧结期间与氮化硅烧结体接触的气氛中形成一氧化碳气体。炉还包括用于将N 2气体或包括N 2气体的惰性气体供应到炉芯的气体供给管。还提供了由限定烧结气氛的容器制成的烧结壳。容器具有用于将要烧结的物体装载到容器中的开口。容器的至少内表面由无碳的耐热材料制成，其防止在烧结气氛中形成一氧化碳气体。容器还包括用于覆盖开口的盖子。至少盖的内表面由无碳的耐热材料制成，其防止在烧结气氛中形成一氧化碳气体。

84. 发明授权

US5516269A Zirconia vane for rotary compressors 失效
标题翻译：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。

85. 发明授权

US5502011A Silicon nitride sintered body 失效
标题翻译：氮化硅烧结体
公开(公告)号：US5502011A
公开(公告)日：1996-03-26
申请号：US303591
申请日：1994-09-09
申请人： Takehisa Yamamoto , Takao Nishioka , Kenji Matsunuma , Akira Yamakawa
发明人： Takehisa Yamamoto , Takao Nishioka , Kenji Matsunuma , Akira Yamakawa
IPC分类号： C04B35/597 , C04B35/587 , C04B35/599
CPC分类号： C04B35/597
摘要： A silicon nitride sintered body characterized by comprising crystal grains having a linear density of 60 to 120 per 50 .mu.m length as measured in an arbitrary two-dimensional section of the sintered body. The silicon nitride sintered body has a shock compressive elasticity limit (Hugoniot-elastic limit) of 15 GPa or more and is substantially composed of crystal phases of .alpha.-silicon nitride and .beta.'-sialon. The percentages of the .alpha.-silicon nitride and .beta.'-sialon are not more than 30% and not less than 70%, respectively. The silicon nitride sintered body is particularly excellent in mechanical strengths at room temperature as well as in productivity and cost efficiency and is useful for applications as the material of parts where a particularly high impact strength is required, such as a valve train mechanism for automobile parts.
摘要翻译：一种氮化硅烧结体，其特征在于包括在烧结体的任意二维截面中测得的每50μm长度的线密度为60至120的晶粒。氮化硅烧结体具有15GPa或更高的冲击压缩弹性极限（Hugoniot弹性极限），并且基本上由α-氮化硅和β'塞隆的结晶相组成。 α硅氮化物和β' - 赛隆的百分比分别不超过30％且不小于70％。氮化硅烧结体在室温下的机械强度以及生产率和成本效率方面特别优异，作为需要特别高的冲击强度的部件的材料，例如汽车部件的气门机构。

86. 发明授权

US5394015A Method of producing sintered silicon nitrides 失效
标题翻译：制造烧结硅氮化物的方法
公开(公告)号：US5394015A
公开(公告)日：1995-02-28
申请号：US91192
申请日：1993-07-14
申请人： Yasushi Tsuzuki , Tomoyuki Awazu , Akira Yamakawa
发明人： Yasushi Tsuzuki , Tomoyuki Awazu , Akira Yamakawa
IPC分类号： C04B35/584 , C04B35/593 , F01L1/04 , F01L3/02 , F02F5/00 , F16J9/26 , C04B35/58
CPC分类号： C04B35/584 , C04B35/5935 , C04B35/6263 , C04B2235/3206 , C04B2235/3217 , C04B2235/3222 , C04B2235/3225 , C04B2235/3865 , C04B2235/3878 , C04B2235/5445 , C04B2235/6022 , C04B2235/604 , C04B2235/6567 , C04B2235/658 , C04B2235/661 , C04B2235/77 , C04B2235/96
摘要： The invention provides a method of producing sintered silicon nitrides having such strength characteristics as are sufficient to insure satisfactory reliability of the sintered silicon nitride for use in applications such as automotive engine parts and bearings. The method comprises preparing a sintering aid by blending yttrium oxide, spinel, and aluminum oxide and/or aluminum nitride together in such proportions in terms of molar ratios of metal elements that Y/(Al+Mg) is 0.23 to 0.85 and Al/Mg is 2.1 to 5.2, mixing 5.0 to 13.0% by weight of the sintering aid with 87.0 to 95.0% by weight of a silicon nitride powder having an .alpha. crystallinity of not less than 60%, and, after the resulting powder mixture is molded into shape, sintering the molded piece at temperatures of 1400 to 1650.degree. C. in a nitrogen gas atmosphere or in an inert gas atmosphere containing nitrogen gas.
摘要翻译：本发明提供了一种制造烧结硅氮化物的方法，其具有足以确保用于汽车发动机部件和轴承的应用中的氮化硅烧结体的令人满意的可靠性的强度特性。该方法包括通过以Y /（Al + Mg）为0.23至0.85的金属元素的摩尔比和Al / Mg的摩尔比将氧化钇，尖晶石和氧化铝和/或氮化铝以这样的比例混合来制备烧结助剂为2.1〜5.2，将5.0〜13.0重量％的烧结助剂与87.0〜95.0重量％的α结晶度为60％以上的氮化硅粉末混合，在得到的粉末混合物成型后，在氮气气氛中或在含有氮气的惰性气体气氛中，在1400〜1650℃的温度下烧结成型体。

87. 发明授权

US5373157A Quadrupole electrode and process for producing the same 失效
标题翻译：四极电极及其制造方法
公开(公告)号：US5373157A
公开(公告)日：1994-12-13
申请号：US965258
申请日：1993-01-05
申请人： Seiji Hiroki , Tetsuya Abe , Yoshio Murakami , Yoshishige Takano , Akira Yamakawa , Masaya Miyake
发明人： Seiji Hiroki , Tetsuya Abe , Yoshio Murakami , Yoshishige Takano , Akira Yamakawa , Masaya Miyake
IPC分类号： H01J49/42 , H01J1/88
CPC分类号： H01J49/4215 , H01J49/068
摘要： The present invention relates to improvement of a quadrupole electrode for use in a mass spectrometer or the like, in which two pairs of electrode rods 1, 2, 3 and 4 formed in such a manner that the section of the opposed face of each rod is hyperbolic or circular, and each electrode rod is made of a ceramic and the surface of the electrode is coated with a coating layer 5 of a conductive metal. Further, the present invention relates to a production process, characterized by incorporating such four electrodes at predetermined intervals. Since the electrodes are mainly made of a ceramic which is easily formable with a high dimensional accuracy, the adjustment of the positional relationship between the electrodes during assembling can be made without much effort, which enables a quadrupole electrode having a high performance to be provided with a good reproducibility at a low cost.
摘要翻译： PCT No.PCT / JP92 / 01141 Sec。 371日期：1993年1月5日 102（e）日期1993年1月5日PCT提交1992年9月7日PCT公布。出版物WO93 / 05532 日本1993年3月18日。本发明涉及用于质谱仪等的四极电极的改进，其中两对电极棒1,2,3和4以这样的方式形成：每个杆的相对面是双曲线或圆形，并且每个电极棒由陶瓷制成，并且电极的表面涂覆有导电金属的涂层5。此外，本发明涉及一种制造方法，其特征在于以预定间隔并入这四个电极。由于电极主要由能够以高尺寸精度容易地形成的陶瓷制成，因此可以在组装期间电极之间的位置关系的调整不需要太多的努力，这使得能够提供具有高性能的四极电极以低成本实现良好的再现性。

88. 发明授权

US5312786A Aluminum nitride sintered body and process for producing the same 失效
标题翻译：氮化铝烧结体及其制造方法
公开(公告)号：US5312786A
公开(公告)日：1994-05-17
申请号：US085302
申请日：1993-06-29
申请人： Akira Yamakawa , Douiti Sogabe , Kohei Shimoda
发明人： Akira Yamakawa , Douiti Sogabe , Kohei Shimoda
IPC分类号： C04B35/581 , C04B35/58
CPC分类号： C04B35/581
摘要： An aluminum nitride sintered body characterized by comprising aluminum nitride as the main component, containing a titanium compound, and having a black color, a transmittance of 10% or less with the light having a wavelength in the range of from 500 to 650 nm and a heat conductivity of 120 W/m.multidot.K or more. The sintered body is produced by adding 0.05 to 5% by weight, in terms of Ti, of a titanium compound and a sintering aid compound and, if necessary, a compound capable of forming carbon after being thermally decomposed to an aluminum nitride powder, molding the mixture, heating the molding in vacuo, air or a nitrogen gas, a hydrogen gas or an atmosphere comprising a mixture of these gases until the residual carbon content is reduced to 2.0% by weight or less, and sintering the heat-treated mixture in a nonoxidizing atmosphere containing nitrogen at 1600.degree. C. or above. The titanium compound is Ti.sub.n O.sub.2n-1 or a solid solution comprising Ti.sub.n O.sub.2n-1 and nitrogen partly dissolved therein in the solid solution form wherein n is 1 or more, or a compound represented by the formula TiN.sub.x O.sub. y wherein 0
摘要翻译：一种氮化铝烧结体，其特征在于，包括氮化铝作为主要成分，含有钛化合物，并且具有黑色，具有波长在500-650nm范围内的光的透射率为10％以下，以及热导率为120W / m×K以上。通过以Ti计的0.05〜5重量％的钛化合物和烧结助剂化合物，根据需要，在热分解成氮化铝粉末后能够形成碳的化合物，将成型体混合物，真空加热成型体，空气或氮气，氢气或包含这些气体的混合物的气氛直到残留碳含量降低至2.0重量％以下，并将热处理后的混合物在1600℃以上含有氮的非氧化气氛。钛化合物是TinO2n-1或其中n为1或更多的固溶体形式的TinO2n-1和氮部分溶解的固溶体，或由式TiN x O y表示的化合物，其中0

89. 发明授权

US5219803A Sintered body of aluminum nitride 失效
标题翻译：氮化铝烧结体
公开(公告)号：US5219803A
公开(公告)日：1993-06-15
申请号：US803117
申请日：1991-12-05
申请人： Akira Yamakawa , Masaya Miyake , Hitoyuki Sakanoue , Koichi Sogabe
发明人： Akira Yamakawa , Masaya Miyake , Hitoyuki Sakanoue , Koichi Sogabe
IPC分类号： C04B35/581 , H01L23/15 , H05K1/03
CPC分类号： H01L23/15 , C04B35/581 , H01L2924/0002 , H05K1/0306
摘要： The present invention provides a sintered body of aluminum nitride comprising (i) aluminum nitride as a main component and (ii) at least one component selected from the group consisting of Zr, Hf, V, Nb, Ta, Cr, Mo, W, Fe, Co, Ni, Nd, Ho, Ti and compounds thereof in the total amounts of not greater than 1.0 wt.% and not less than 0.01 wt.% in terms of elements on the basis of sintered body, the sintered body being colored and having a thermal conductivity of at least 150 W/mK. The sintered body is useful for the preparation of circuit boards having printed circuits thereon and highly heat-releasing ceramic packages for semiconductive devices.
摘要翻译：本发明提供一种氮化铝烧结体，其包含（i）氮化铝作为主要成分，和（ii）选自Zr，Hf，V，Nb，Ta，Cr，Mo，W， Fe，Co，Ni，Nd，Ho，Ti及其化合物的总量不大于1.0重量％且不小于0.01重量％，基于烧结体的元素，烧结体是着色的并具有至少150W / mK的热导率。该烧结体可用于制备其上具有印刷电路的电路板和用于半导体器件的高度散热的陶瓷封装。

90. 发明授权

US5204297A Silicon nitride sintered body and process for producing the same 失效
标题翻译：硅氮化物烧结体及其制造方法
公开(公告)号：US5204297A
公开(公告)日：1993-04-20
申请号：US825989
申请日：1992-01-27
申请人： Takehisa Yamamoto , Takao Nishioka , Kenji Matsunuma , Akira Yamakawa , Masaya Miyake
发明人： Takehisa Yamamoto , Takao Nishioka , Kenji Matsunuma , Akira Yamakawa , Masaya Miyake
IPC分类号： C04B35/593 , C04B35/597
CPC分类号： C04B35/5935 , C04B35/597
摘要： The present invention relates to a silicon nitride sintered body [wherein the composition of Si.sub.3 N.sub.4 -first aid (Y.sub.2 O.sub.3 +MgO)-second aid (at least one of Al.sub.2 O.sub.3 and AlN)] falls within a range defined by lines joining points A, B, C and D in FIG. 1, the crystal phase of the sintered body contains both .alpha.-Si.sub.3 N.sub.4 and .beta.'-sialon, and the relative density is 98% or more. This sintered body is produced by subjecting a green compact of the above-described source to primary sintering in a nitrogen gas atmosphere at 1300.degree. to 1700.degree. C. so that the relative density reaches 96% or more, and the precipitation ratio of the .alpha.-Si.sub.3 N.sub.4 crystal phases to the .beta.'-sialon crystal phase in the sintered body is in the range of from 40:60 to 80:20; and then subjecting the primary sintered body to secondary sintering in a nitrogen gas atmosphere at 1300.degree. to 1700.degree. C. so that the relative density reaches 98% or more. The sintered body has superior strength properties, especially at ordinary temperatures, and can be produced with a high productivity in a high yield at a low cost.

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