专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5384292A Silicon nitride composite sintered body and process for producing the same 失效
标题翻译：氮化硅复合烧结体及其制造方法
公开(公告)号：US5384292A
公开(公告)日：1995-01-24
申请号：US220457
申请日：1994-03-31
申请人： Jin-Joo Matsui , Osamu Komura , Akira Yamakawa , Masaya Miyake
发明人： Jin-Joo Matsui , Osamu Komura , Akira Yamakawa , Masaya Miyake
IPC分类号： C04B35/584 , C04B35/58
CPC分类号： C04B35/584
摘要： A silicon nitride composite sintered which comprises crystal grains of silicon nitride and/or sialon having an average minor axis length of 0.05 to 3 .mu.m and an aspect ratio of 10 or less and foreign particles dispersed in the crystal grains and/or the grain boundary phase, said particles having a thermal expansion coefficient of 5.times.10.sup.-6 /.degree.C. or more and an average particle size of 1 to 500 nm. The sintered body is produced by wet mixing silicon nitride powder, at least two sintering aids selected from among Y.sub.2 O.sub.3, Al.sub.2 O.sub.3, AlN and MgO and at least one compound selected from among the oxides, nitrides, carbides and silicides of the elements, excluding Si and C, of the groups IIa, IIIa, IVa, Va, VIa, IIb, IIIb and IVb of the Periodic Table to form a molding; and heat treating under the specified conditions. The sintered body can also be obtained by coating the surfaces of silicon nitride crystal grains with an organometallic compound convertible to the above foreign particles, heat treating and sintering with the sintering aid.
摘要翻译：一种氮化硅复合材料，其包含平均短轴长度为0.05〜3μm，长径比为10以下的氮化硅和/或赛隆的晶粒和分散在晶粒和/或晶界中的异物的氮化硅复合体所述颗粒的热膨胀系数为5×10 -6 /℃以上，平均粒径为1〜500nm。烧结体通过湿式混合氮化硅粉末，至少两种选自Y 2 O 3，Al 2 O 3，AlN和MgO的烧结助剂和选自元素的氧化物，氮化物，碳化物和硅化物中的至少一种化合物，除Si和 C，元素周期表IIa，IIIa，IVa，Va，VIa，IIb，IIIb和IVb族中的一种，形成一个成型体; 并在规定条件下进行热处理。烧结体也可以通过用可转化为上述外来颗粒的有机金属化合物涂覆氮化硅晶粒表面，用烧结助剂进行热处理和烧结来获得。

2. 发明授权

US5776600A Slide member and method of manufacturing the same 失效
标题翻译：滑动构件及其制造方法
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。

3. 发明授权

US5280208A Composite bearing structure 失效
标题翻译：复合轴承结构
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。

4. 发明授权

US5675201A Composite bearing structure 失效
标题翻译：复合轴承结构
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）。

5. 发明授权

US5543371A Slide member and method of manufacturing the same 失效
标题翻译：滑动构件及其制造方法
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。

6. 发明授权

US5352641A Silicon nitride composite sintered body and process for producing same 失效
标题翻译：氮化硅复合烧结体及其制造方法
公开(公告)号：US5352641A
公开(公告)日：1994-10-04
申请号：US956887
申请日：1992-12-14
申请人： Jin-Joo Matsui , Akira Yamakawa
发明人： Jin-Joo Matsui , Akira Yamakawa
IPC分类号： C04B35/584 , C04B35/58
CPC分类号： C04B35/584
摘要： A composite silicon nitride sintered body formed of silicon nitride as a matrix and silicon carbide having particle sizes of 5 to 500 nm as a phase dispersed in the sintered body, wherein the total amount of dispersed silicon carbide is 1 to 40% by volume based on the sintered body, the proportion by volume of the silicon carbide dispersed in the silicon nitride particles is 5 to 99% based on the total amount dispersed, the remainder being present only in the grain boundary of the silicon nitride, and a process for producing a silicon nitride composite sintered body which includes the steps of adding a sintering aid to amorphous composite powders as starting materials consisting of silicon, nitrogen and carbon to form a green compact; firing the green compact in a nitrogen atmosphere at 1350.degree. to 1650.degree. C. as the primary sintering; firing the same at 1600.degree. to 1900.degree. C. as the secondary sintering; and firing the same at 1800.degree. to 2200.degree. C. to transfer the silicon carbide precipitated in the particles of silicon nitride to the grain boundaries thereof.
摘要翻译： PCT No.PCT / JP92 / 01032 Sec。 371日期：1992年12月14日 102（e）日期1992年12月14日PCT提交1992年8月12日PCT公布。出版物WO93 / 0401200 日期：1993年3月4日。作为基体的氮化硅形成的复合氮化硅烧结体和粒径为5〜500nm的碳化硅作为分散在烧结体中的相，其中分散碳化硅的总量为1 至基于烧结体的40体积％，分散在氮化硅颗粒中的碳化硅的体积比例相对于分散的总量为5〜99％，余量仅存在于氮化硅的晶界以及制造氮化硅复合烧结体的方法，包括以下步骤：将无定形复合粉末作为起始材料添加到由硅，氮和碳组成的烧结助剂以形成生坯; 在1350〜1650℃的氮气氛中烧成生坯，作为一次烧结; 在1600℃〜1900℃下烧成二次烧结; 并在1800〜2200℃下烧成，将在氮化硅粒子中析出的碳化硅转移至其晶界。

7. 发明授权

US5369065A Silicon nitride sintered body and process for producing the same 失效
标题翻译：氮化硅烧结体及其制造方法
公开(公告)号：US5369065A
公开(公告)日：1994-11-29
申请号：US118023
申请日：1993-09-08
申请人： Masashi Yoshimura , Jin-Joo Matsui , Takehisa Yamamoto , Akira Yamakawa
发明人： Masashi Yoshimura , Jin-Joo Matsui , Takehisa Yamamoto , Akira Yamakawa
IPC分类号： C04B35/584 , C04B35/593 , C04B35/58
CPC分类号： C04B35/5935
摘要： A silicon sintered body comprising a matrix phase consisting of silicon nitride and a grain boundary phase in which the silicon nitride consists of 66 to 99% by volume of .beta.-Si.sub.3 N.sub.4 and/or .beta.'-sialon with the balance being .alpha.-Si.sub.3 N.sub.4 and/or .alpha.'-sialon, the .beta.-Si.sub.3 N.sub.4 and/or .beta.'-sialon consisting of hexagonal rod-like grains having a diameter of 500 nm or less in the minor axis and an aspect ratio 5 to 25, the .alpha.-Si.sub.3 N.sub.4 and/or .alpha.'-sialon consisting of equi-axed grains having an average diameter of 300 nm or less, and titanium compounds are contained within the grains of the matrix phase and in the grain boundary phase. The sintered body is produced by mixing (1) 100 parts by weight of .alpha.-Si.sub.3 N.sub.4 powder, (2) 0.1 to 10 parts by weight of titanium oxide having an average particle size of 100 nm or less and (3) 2 to 15 parts by weight, in total, of specified sintering aids; molding the resultant powder mixture into a green compact; subjecting the green compact to primary sintering and secondary sintering under the prescribed conditions.
摘要翻译：一种硅烧结体，包括由氮化硅和晶界相组成的基质相，其中氮化硅由66-99体积％的β-Si 3 N 4和/或β' - 赛隆组成，余量为α-Si 3 N 4和/ 或α' - 塞隆，β-Si 3 N 4和/或β'-Sialon由短轴具有500nm或更小直径的六角棒状晶粒和5至25的长宽比组成，α-Si 3 N 4和/ 或由平均直径为300nm以下的等轴晶粒组成的α'-Sialon，并且钛化合物包含在基质相的晶粒内和晶界相中。烧结体通过混合（1）100重量份的α-Si 3 N 4粉末，（2）0.1〜10重量份的平均粒径为100nm以下的氧化钛和（3）2〜15重量份总共为指定的烧结助剂; 将所得粉末混合物成型为生坯; 在规定的条件下对生坯进行一次烧结和二次烧结。

8. 发明授权

US5879078A Device for producing ceramic sintered body 失效
标题翻译：陶瓷烧结体的制造装置
公开(公告)号：US5879078A
公开(公告)日：1999-03-09
申请号：US425813
申请日：1995-04-19
申请人： Yasushi Tsuzuki , Jin-Joo Matsui , Akira Yamakawa
发明人： Yasushi Tsuzuki , Jin-Joo Matsui , Akira Yamakawa
IPC分类号： B28C1/04 , C04B35/565 , C04B35/593 , C04B35/622 , C04B35/626 , B01F15/02
CPC分类号： C04B35/565 , B01F7/00033 , C04B35/5935 , C04B35/626
摘要： A device for producing a ceramic sintered body consisting essentially of a mixing trough for mixing ceramic powder with water to form a slurry, the mixing trough having stirring blades, a separate slurry circulation conduit and a slurry mixing deflocculating unit, said separate slurry circulation conduit connecting said mixing trough and said deflocculating unit, said slurry mixing unit deflocculating said powder which has been flocculated with no grinding of powder by means of causing a high-speed shear flow and a high-speed contraction flow in the slurry, said slurry being repeatedly circulated form said slurry mixing unit to said mixing trough through said separate slurry circulation conduit.
摘要翻译：一种陶瓷烧结体的制造装置，其主要由混合槽组成，该混合槽用于将陶瓷粉末与水混合以形成浆料，具有搅拌叶片的混合槽，分离的淤浆循环管道和浆料混合防絮凝装置，所述分离的浆料循环管道连接所述混合槽和所述抗絮凝单元，所述浆料混合单元通过在所述浆料中引起高速剪切流和高速收缩流来对已经絮凝的粉末进行了絮凝，所述粉末没有粉碎，所述浆料被重复循环通过所述单独的浆料循环管道将所述浆料混合单元形成到所述混合槽。

9. 发明授权

US5424256A Silicon nitride sintered body 失效
标题翻译：氮化硅烧结体
公开(公告)号：US5424256A
公开(公告)日：1995-06-13
申请号：US138346
申请日：1993-10-18
申请人： Masashi Yoshimura , Takehisa Yamamoto , Shinichi Yamagata , Jin-Joo Matsui , Akira Yamakawa
发明人： Masashi Yoshimura , Takehisa Yamamoto , Shinichi Yamagata , Jin-Joo Matsui , Akira Yamakawa
IPC分类号： C04B35/593 , C04B35/599
CPC分类号： C04B35/5935
摘要： Silicon nitride sintered bodies consisting of prismatic crystal grains of Si.sub.3 N.sub.4 and/or sialon, equi-axed crystal grains of Si.sub.3 N.sub.4 and/or sialon, a grain boundary phase existing among the prismatic and equi-axed crystal grains and dispersed particles in the grain boundary phase, in which the prismatic crystal grains have an average grain size of 0.3 .mu.m or less in minor axis and an average grain size of 5 .mu.m or less in major axis, the equi-axed crystal grains have an average grain size of 0.5 .mu.m or less and the dispersed particles have an average size of 0.1 .mu.m or less, the volume of the dispersed particles being 0.05% by volume or more based on the total volume of the rest of the sintered body. The silicon nitride sintered bodies have a strength sufficient for use as structural materials of machine parts or members, with a minimized scattering of the strength as well as high reliability, superior productivity and advantageous production cost.
摘要翻译：由Si 3 N 4和/或赛隆的棱柱状晶粒构成的氮化硅烧结体，Si 3 N 4等离子晶粒和/或赛隆，棱晶相和等轴晶粒中存在的晶界相和晶界相中的分散粒子其中棱柱晶粒的短轴平均粒径为0.3μm以下，长轴的平均粒径为5μm以下，等轴晶粒的平均粒径为0.5μm m以下，分散粒子的平均粒径为0.1μm以下，相对于烧结体的其余部分的总体积，分散粒子的体积为0.05体积％以上。氮化硅烧结体具有足以用作机械部件或部件的结构材料的强度，其强度的极小散射以及高可靠性，优异的生产率和有利的生产成本。

10. 发明授权

US5599493A Method of producing silicon nitride ceramic component 失效
标题翻译：氮化硅陶瓷部件的制造方法
公开(公告)号：US5599493A
公开(公告)日：1997-02-04
申请号：US429067
申请日：1995-04-26
申请人： Yasushi Ito , Takehisa Yamamoto , Takao Nishioka , Akira Yamakawa , Osamu Komura
发明人： Yasushi Ito , Takehisa Yamamoto , Takao Nishioka , Akira Yamakawa , Osamu Komura
IPC分类号： C04B41/80 , B24B1/00 , C04B35/584 , C04B35/593 , C04B35/599 , C04B35/63 , C04B41/00 , B29C71/02
CPC分类号： C04B41/009 , C04B35/5935 , C04B41/00
摘要： A method of producing a silicon nitride ceramic component, comprising: grinding a silicon nitride sintered body comprising .alpha.--Si.sub.3 N.sub.4 having an average grain size of 0.5 .mu.m or smaller and .beta.'-sialon having an average grain size of 3 .mu.m or smaller in major axis and 1 .mu.m or smaller in minor axis into a predetermined size with a surface roughness of 1-7 .mu.m in ten-point mean roughness; heat treating the same at temperature range of 800.degree.-1200.degree. C. in the air; and standing it to allow to be cooled, whereby providing a residual stress in the ground surface before and after the heat treating as a residual compressive stress at a ratio of 1 or higher of the residual compressive stress after the heat treating to that before the heat treating (residual compressive stress after the heat treating/residual compressive stress before the heat treating), preferably 5 or more.
摘要翻译：一种氮化硅陶瓷成分的制造方法，其特征在于，包括：研磨包含平均粒径为0.5μm以下的α-Si 3 N 4，平均粒径为3μm以下的β'赛隆的氮化硅烧结体长轴和1μm或更小的短轴成预定尺寸，十点平均粗糙度的表面粗糙度为1-7μm; 在空气中在800〜1200℃的温度范围进行热处理; 并将其放置以允许冷却，由此在热处理之前和之后的地面中提供作为残余压应力的残余应力在热处理后的剩余压缩应力为1或更高的比例处理（热处理后的残余压应力/热处理前的残余压应力）优选为5以上。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式