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61. 发明授权

US5961907A Process for producing silicon nitride sliding member 失效
标题翻译：氮化硅滑动构件的制造方法
公开(公告)号：US5961907A
公开(公告)日：1999-10-05
申请号：US920452
申请日：1997-08-29
申请人： Masamichi Yamagiwa , Akira Yamakawa , Takao Nishioka , Takashi Matsuura
发明人： Masamichi Yamagiwa , Akira Yamakawa , Takao Nishioka , Takashi Matsuura
IPC分类号： F16C33/24 , C04B35/584 , C04B35/593 , C04B41/80 , F01L1/14 , F01L3/02 , F16C33/04 , B29C49/00
CPC分类号： C04B35/593 , F01L1/14 , F01L3/02 , F16C33/043 , F01L2105/02
摘要： A silicon nitride ceramic sliding member which includes Si.sub.3 N.sub.4 grains as a main component and is shaped or controlled in dimensions through hot plastic working wherein the Si.sub.3 N.sub.4 particles mainly includes .beta.-type columnar crystal grains. The ceramic sliding member is produced by the step (I) of preparing a preform made of silicon nitride ceramic sintered body including Si.sub.3 N.sub.4 grains as a main component wherein the average grain size (average grain size in minor axis in the case of .beta.-type columnar crystal grains) of the Si.sub.3 N.sub.4 grains is at most 0.5 .mu.m, and the hot plastic working step (II) of placing the preform in a mold and effecting hot plastic deformation of the preform for shaping or dimensional control thereof while simultaneously increasing the average aspect ratio of the .beta.-type columnar crystal grains. The resultant sliding member has excellent sliding properties, a high mechanical strength and a high reliability at a low cost without resort to grinding or the like for shaping thereof.
摘要翻译：一种氮化硅陶瓷滑动构件，其包括Si 3 N 4晶粒作为主要成分，并通过热塑性加工成型或尺寸控制，其中Si 3 N 4颗粒主要包括β型柱状晶粒。陶瓷滑动构件是通过制备由包含Si 3 N 4晶粒作为主要成分的氮化硅陶瓷烧结体制成的预制件的步骤（I）制备的，其中平均晶粒度（在β型柱状的情况下为短轴的平均晶粒尺寸 Si3N4晶粒的晶粒度为0.5μm以下，热塑性加工工序（II）将预成型体放置在模具中，并对预制件进行热塑性变形以进行成形或尺寸控制，同时增加平均面积 β型柱状晶粒的比例。所得的滑动构件具有优异的滑动性能，高机械强度和高可靠性，而不需要用于成型的研磨等。

62. 发明授权

US5783314A Sliding component and production method thereof 失效
标题翻译：滑动部件及其制造方法
公开(公告)号：US5783314A
公开(公告)日：1998-07-21
申请号：US716446
申请日：1996-09-19
申请人： Masamichi Yamagiwa , Takao Nishioka , Hisao Takeuchi , Akira Yamakawa
发明人： Masamichi Yamagiwa , Takao Nishioka , Hisao Takeuchi , Akira Yamakawa
IPC分类号： F01L1/14 , B32B18/00 , B32B15/00 , C21D1/00
CPC分类号： F01L1/143 , Y10T428/12576
摘要： This invention aims at providing a sliding component having a crowning shape formed by applying surface quenching treatment to a portion made of a steel, and a production method thereof. The shape and the quantity of crowning can be controlled by heat-treatment or machining after the surface quenching. The sliding component may be made of a steel alone, or may be formed in such a manner that at least one portion of members forming the crowning-shaped sliding face by the surface quenching is joined or fitted to a sliding component main body made of the steel, and its material is a ceramic.
摘要翻译： PCT No.PCT / JP96 / 01660 Sec。 371日期1996年9月19日 102（e）1996年9月19日PCT PCT 1996年6月17日PCT公布。出版物WO97 / 00374 日本1997年1月3日本发明旨在提供一种具有通过对钢制成的部分进行表面淬火处理形成的隆起形状的滑动部件及其制造方法。凸面的形状和数量可以通过表面淬火后的热处理或机械加工来控制。滑动部件可以由单独的钢制成，或者可以这样形成：通过表面淬火形成凸面状滑动面的部件的至少一部分接合或嵌合到由钢，其材料是陶瓷。

63. 发明授权

US5720917A Manufacturing method for silicon nitride-based sintered body 失效
标题翻译：氮化硅基烧结体的制造方法
公开(公告)号：US5720917A
公开(公告)日：1998-02-24
申请号：US638587
申请日：1996-04-29
申请人： Takashi Matsuura , Takao Nishioka , Akira Yamakawa
发明人： Takashi Matsuura , Takao Nishioka , Akira Yamakawa
IPC分类号： C04B35/584 , C04B35/593 , C04B35/64
CPC分类号： C04B35/584 , C04B35/593
摘要： The invention aims to offer a method to manufacture a high-strength, high-reliability and low cost silicon nitride based sintered body which is not affected by the amount of metal impurities contained in the silicon nitride powder, without using high-purity silicon nitride powder, and can be sintered for a short sintering time. The invention uses silicon nitride and sintering aids, and the powder mixture containing 500-5000 ppm metal impurities is sintered at temperatures ranging from 1300.degree.-1900.degree. C., and under the conditions wherein the product of sintering temperature and sintering time ranges from 1.times.10.sup.5 to 10.times.10.sup.5 .degree. C. .multidot.seconds.
摘要翻译：本发明旨在提供一种制造高强度，高可靠性和低成本的氮化硅基烧结体的方法，其不受氮化硅粉末中所含的金属杂质的量的影响，而不使用高纯氮化硅粉末并且可以在短的烧结时间下烧结。本发明使用氮化硅和烧结助剂，并且将含有500-5000ppm金属杂质的粉末混合物在1300-119℃的温度下烧结，并且在烧结温度和烧结时间范围为1×10 5 至10×105℃×秒。

64. 发明授权

US5372099A Ceramic adjusting shim 失效
标题翻译：陶瓷调节垫片
公开(公告)号：US5372099A
公开(公告)日：1994-12-13
申请号：US174471
申请日：1993-12-28
申请人： Kenji Matsunuma , Takao Nishioka , Akira Yamakawa
发明人： Kenji Matsunuma , Takao Nishioka , Akira Yamakawa
IPC分类号： F01L1/14 , F01L1/16 , F01L1/20
CPC分类号： F01L1/143 , F01L1/16 , F01L1/205 , Y10T74/2107
摘要： The preset invention provides a ceramic adjusting shim capable of minimizing the abrasion of parts contacting the adjusting shim, for example, a cam and a tappet. The ceramic adjusting shim is produced from a ceramic material and has a surface roughness of 0.05 to 0.2 .mu.m in ten-point average roughness Rz.
摘要翻译：本发明提供一种陶瓷调节垫片，其能够最小化与调节垫片接触的部件的磨损，例如凸轮和挺杆。陶瓷调节垫片由陶瓷材料制成，并且在十点平均粗糙度Rz中具有0.05至0.2μm的表面粗糙度。

65. 发明授权

US5358797A Adjusting shim 失效
标题翻译：调整垫片
公开(公告)号：US5358797A
公开(公告)日：1994-10-25
申请号：US911914
申请日：1992-07-10
申请人： Kenji Matsunuma , Takao Nishioka , Takehisa Yamamoto , Akira Yamakawa
发明人： Kenji Matsunuma , Takao Nishioka , Takehisa Yamamoto , Akira Yamakawa
IPC分类号： C04B35/584 , C04B35/593 , C04B35/597 , C04B35/599 , C04B38/00 , F01L1/14 , F01L1/16 , F01L1/20
CPC分类号： C04B35/593 , C04B35/597 , F01L1/143 , F01L1/16 , F01L1/205 , Y10T428/265
摘要： The present invention provides an improved adjusting shim used in a valve train for an internal combustion engine for an automobile. The adjusting shim produced from a base material consisting of a ceramic material containing 80 to 98 wt. % of silicon nitride and/or sialon and has a porosity of not more than 3%, a bending strength of not less than 1.0 GPa and an impact compressive elastic limit (Hugoniot elastic limit) of not less than 15 GPa, wherein the base material is provided on the surface thereof which contacts a cam with a ceramic surface layer having a composition different from that of the base material and a hardness lower than that of the base material. The adjusting shim of the present invention enables a power loss of a valve train to be minimized; the abrasion resistance thereof to be improved; and the fuel economy, the performance and durability of an internal combustion engine to be improved.
摘要翻译：本发明提供一种用于汽车内燃机的气门机构中使用的改进的调节垫片。由由含有80〜98重量％的陶瓷材料构成的基材制成的调整垫片％的氮化硅和/或赛隆，并且具有不大于3％的孔隙率，不小于1.0GPa的弯曲强度和不小于15GPa的冲击压缩弹性极限（Hugoniot弹性极限）），其中所述基材在其表面上设置有与具有不同于基材的组成的陶瓷表面层的凸轮接触，并且硬度低于基材的硬度。本发明的调节垫片能够使气门机构的功率损失最小化; 其耐磨性得到提高; 并且燃料经济性，内燃机的性能和耐久性得到改善。

66. 发明授权

US5275772A 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：US5275772A
公开(公告)日：1994-01-04
申请号：US957506
申请日：1992-10-05
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 , C04B35/58
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 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 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.
摘要翻译：本发明涉及一种氮化硅烧结体[其中，Si 3 N 4 - 急救（Y 2 O 3 + MgO） - 辅助剂（Al 2 O 3和AlN中的至少一种）的组成]落在由连接点A，B， C和D。如图1所示，烧结体的结晶相含有α-Si 3 N 4和β'-Sialon，相对密度为98％以上。该烧结体是通过使上述源的生坯在1300〜1700℃的氮气气氛中进行一次烧结而制成的，使得相对密度达到96％以上， Si3N4晶相与烧结体中的β' - 赛隆结晶相的比例范围为40:60至80:20; 然后在1300〜1700℃的氮气气氛中使一次烧结体进行二次烧结，使得相对密度达到98％以上。该烧结体具有优异的强度特性，特别是在普通温度下，可以低成本高产率地以高生产率生产。

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