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1. 发明专利

JP2004250318A AlN SINTERED COMPACT AND SUBSTRATE FOR ELECTRONIC DEVICE 有权
标题翻译： AlN烧结紧凑型和电子器件基片
公开(公告)号：JP2004250318A
公开(公告)日：2004-09-09
申请号：JP2003199987
申请日：2003-07-22
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TANAKA SHIGERU , CHIBA AKIO , SUZUKI YASUTAKA , HIROSE KAZUHIRO , KAWAHIGASHI TAMITO
IPC分类号： C04B35/581 , C04B41/88 , H01L23/36
CPC分类号： H01L2224/48091 , H01L2224/48227 , H01L2224/73265 , H01L2924/01019 , H01L2924/01055 , H01L2924/01063 , H01L2924/01066 , H01L2924/01067 , H01L2924/01068 , H01L2924/01078 , H01L2924/15153 , H01L2924/1517 , H01L2924/15312 , H01L2924/1532 , H01L2924/16195 , H01L2924/00014
摘要： PROBLEM TO BE SOLVED: To provide an AlN sintered compact having a high thermal conductivity and excellent mirror surface finishability. SOLUTION: The AlN sintered compact is manufactured by press-sintering a powdery composition containing one or more kinds of sintering aids selected from among Nd, Sm, Eu, Er, Dy, Gd, Pr, and Yb of 5-30 wt.% (as the oxides vs. the total of AlN and the sintering aids) and has a surface roughness Rmax after grinding of ≤0.2 μm and a thermal conductivity of ≥200 (W/m×K). The sintered compact is used for a substrate for an electronic device, a laser device, and a semiconductor device. COPYRIGHT: (C)2004,JPO&NCIPI
摘要翻译：要解决的问题：提供具有高导热性和优异的镜面整理性的AlN烧结体。解决方案：通过将含有选自Nd：Sm，Eu，Er，Dy，Gd，Pr和Yb中的一种或多种烧结助剂的粉末组合物加热烧结制备AlN烧结体，所述烧结助剂为5-30wt ％（作为氧化物与AlN和烧结助剂的总量），研磨后的表面粗糙度Rmax≤0.2μm，热导率≥200（W / m×K）。烧结体用于电子器件用基板，激光器件和半导体器件。版权所有（C）2004，JPO＆NCIPI

2. 发明专利

JP2004020355A Pressure detection element 审中-公开
公开(公告)号：JP2004020355A
公开(公告)日：2004-01-22
申请号：JP2002175175
申请日：2002-06-17
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TANAKA SHIGERU , CHIBA AKIO , SAWAI YUICHI
IPC分类号： G01L1/18 , G01L9/06
摘要： PROBLEM TO BE SOLVED: To provide a pressure detection element wherein piezo resistance effect is large and a resistance temperature coefficient is small, as an element for detecting pressure.
SOLUTION: Ceramic material whose main component is silicon nitride and silicon carbide is used in a pressure detecting part, thereby providing a simple pressure detection element wherein the piezo resistance effect is at least 0.1%/MPa, a rate of change of resistivity is at most ±0.1% even in the range from -50
0 C to 300
0 C, the reliability is high, and the resistance temperature coefficient is small. The pressure detection element can be applied to a region having temperature change.
COPYRIGHT: (C)2004,JPO

3. 发明专利

JP2000074753A Apparatus for detecting atmosphere in furnace 审中-公开
标题翻译：检测大气中的大气的装置
公开(公告)号：JP2000074753A
公开(公告)日：2000-03-14
申请号：JP24134698
申请日：1998-08-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TANAKA SHIGERU , SUZUKI YASUTAKA , YAMADA SEIICHI , CHIBA AKIO , TAKAHASHI KEN
IPC分类号： G01K11/00 , F27B14/20 , F27B17/00 , G01N27/04 , G01N27/12
摘要： PROBLEM TO BE SOLVED: To make detectable the temp./oxygen concn. by a convenient method, without using complicated electric wirings or measuring circuits by constituting a detector for detecting signals from a specified ceramic sintered compact.
SOLUTION: E.g., 6 sheets of ceramic sintered compact 1 formed in specified dimensions, contg. zinc oxide 80 mol% or more, are adhered onto an alumina board 3 with an inorg. adhesive 2 to form the furnace atmosphere detector. The sheets of sintered compact 1 are made by sintering in the air (O concn. 20%) at temps. of 950°C, 960°C, 970°C, 980°C, 990°C, respectively. The furnace atmosphere detector is set in an electric furnace set e.g. at 970°C, the surface of each sintered compact 1 is visually seen after completion of the sintering process. In this time voids or cracks appear on the sintered compact surface at 950°C, 960°C, 970°C, and if no change appears on the sintered compact at 980°C, 990°C, the furnace temp. is lower than 980°C and higher than 970°C. When the temp. must be known at a more fine resolution, the furnace temp. can be estimated at an accuracy within about 2°C from the change of the crystal grain size.
COPYRIGHT: (C)2000,JPO
摘要翻译：要解决的问题：使可测的温度/氧浓度通过构成用于检测来自特定陶瓷烧结体的信号的检测器，通过方便的方法不使用复杂的电线或测量电路。解决方案：例如，以特定尺寸形成的6片陶瓷烧结体1， 80摩尔％以上的氧化锌用氧化铝粘合到氧化铝板3上。粘合剂2形成炉气氛检测器。烧结体1通过在空气中烧结（O浓度20％）在温度下制造。分别为950℃，960℃，970℃，980℃，990℃。炉气氛检测器设置在例如电炉中。在970℃下，烧结工序完成后，目视观察各烧结体1的表面。此时，在950℃，960℃，970℃的烧结体表面上出现空隙或裂纹，如果烧结体在980℃，990℃没有变化，则炉温度低于980℃，高于970℃。当温度必须以更精细的分辨率知道炉温。可以从晶粒尺寸的变化估计在约2℃以内的精度。

4. 发明授权

US3891475A Pole piece for producing a uniform magnetic field 失效
标题翻译：用于产生均匀磁场的极片
公开(公告)号：US3891475A
公开(公告)日：1975-06-24
申请号：US35446773
申请日：1973-04-25
申请人： HITACHI LTD
发明人： TOMITA SADAMI , CHIBA AKIO , MIYAJIMA GOH
IPC分类号： C22C19/07 , C22C38/00 , C22C38/10 , H01F1/14 , H01F1/147 , C04B35/00
CPC分类号： C22C19/07 , C22C38/10 , H01F1/147
摘要： A strong and uniform magnetic field is required at the magnetic gap of magnetic circuits in an analyzing apparatus such as a nuclear magnetic resonance apparatus. The addition of 0.15-0.5 percent carbon to a 35-55 percent co-containing iron-cobalt soft magnetic alloy which is used as a pole piece incorporated into the circuits can result in fine crystal structures without the strong magnetic performance harmed, so that a strong and uniform magnetic field is obtained.
摘要翻译：在诸如核磁共振装置的分析装置中，在磁路的磁隙处需要强而均匀的磁场。在35-55％的含钴铁磁软磁合金中加入0.15-0.5％的碳，作为结合在电路中的极片，可以产生精细的晶体结构，而没有强磁性能受损，因此，得到强而均匀的磁场。

5. 发明专利

DE3204231A1 未知
公开(公告)号：DE3204231A1
公开(公告)日：1982-08-12
申请号：DE3204231
申请日：1982-02-08
申请人： HITACHI LTD
发明人： CHIBA AKIO , SHIMIZU SEIKI , KUNIYA KEIICHI , ONUKI JIN
IPC分类号： H01L21/52 , B32B15/14 , C22C49/14 , H01L21/58 , H01L23/373 , H01L23/492 , H01L31/0392 , H01L23/14 , H01L23/36
摘要： Herein disclosed is a stacked or laminated structure which is rigidly integrated by sandwiching a metal layer between a first matrix-fiber composite layer prepared to have as a whole a thermal expansion coefficient and a second matrix-fiber layer prepared to have as a whole another thermal expansion coefficient different from that of the first matrix-fiber composite layer. The intervening metal layer acts as a buffer for the first and second matrix-fiber composite layers. The stacked structure according to the present invention can by used as the chip carrier of a semiconductor device, for example.

6. 发明专利

DE19654182C2 未知
公开(公告)号：DE19654182C2
公开(公告)日：2000-11-02
申请号：DE19654182
申请日：1996-12-23
申请人： HITACHI LTD
发明人： KANAI TSUNEYUKI , MAEDA KUNIHIRO , CHIBA AKIO , YOSHIZAWA HIROYUKI , MIYATA MOTOYUKI , SAWAI YUICHI , YASUTOMI YOSHIYUKI
IPC分类号： C04B35/10 , C04B35/111 , C04B35/573 , C04B35/591 , C04B35/622 , C04B35/638 , C04B35/64 , C04B35/65
摘要： PROBLEM TO BE SOLVED: To obtain a reaction-sintered ceramic improved in strength and fracture toughness by partially generating chemical reactions in the calculation product of the powder of raw materials to advance the chemical reactions in local zone regions. SOLUTION: The mixture of an organic binder and the powder of elements composing a (non)oxide ceramic matrix is press-molded into the molded product having a density of 75-79%. The molded product is subjected to a binder- removing treatment and subsequently to a calculation treatment. The calculation product 13 is placed in a thermally treating oven in which divided heaters 9 are arranged on the inside of a heat-insulating wall 8, and elements 12 required for forming the final product, ceramic, of the calculation product are charged in the reservoir 11 of a bulkhead chamber 10. The oven is heated at 1300-1450 deg.C to supply the gaseous elements 12 in a pressure of >=0.1atm, and simultaneously a chemical reaction-occurring part is moved at a rate of 1-200mm/min to subject the calculation product to a zone reaction sintering treatment. Thus, the reaction-sintered ceramic having an orientation degree (ball figure method) (F value) of >=0.5, a relative density of >=95%, and a residual raw material composition of

7. 发明专利

DE3476487D1 NUCLEAR FUSION REACTOR 未知
公开(公告)号：DE3476487D1
公开(公告)日：1989-03-02
申请号：DE3476487
申请日：1984-02-17
申请人： HITACHI LTD
发明人： OKAMURA HISANORI , MIYAZAKI KUNIO , AKIYAMA HIROSHI , ITOH SHINICHI , YASUDA TOMIO , NAKAMURA KOUSUKE , OKOSHI YUKIO , KAMOSHITA MUTUO , CHIBA AKIO
IPC分类号： G21B1/11 , G21B1/13 , G21B1/17 , G21B1/00
摘要： A nuclear fusion reactor has a vacuum vessel enclosing the plasma. The vessel has a reactor wall exposed to the plasma particles. To improve the resistance to radiation of this reactor wall and to reduce its tendency to crack or deform because of thermal stress, the wall has heat-resisting ceramics tiles 4 metallurgically bonded by a solder material 11 to a metal body 5 providing a base and having cooling passages 12. The tiles are separated by gaps 14 and corresponding grooves 13 are provided in the metal body. The ceramics tiles 4 are preferably composed of sintered silicon carbide of high density and containing a little beryllium oxide between the boundaries of the crystal grains. A metallic intermediate layer may be interposed between the tiles and the metal body, this having an intermediate coefficient of thermal expansion.

8. 发明专利

DE19654182A1 Grain oriented reaction sintered ceramic 未知
公开(公告)号：DE19654182A1
公开(公告)日：1997-07-03
申请号：DE19654182
申请日：1996-12-23
申请人： HITACHI LTD
发明人： KANAI TSUNEYUKI , MAEDA KUNIHIRO , CHIBA AKIO , YOSHIZAWA HIROYUKI , MIYATA MOTOYUKI , SAWAI YUICHI , YASUTOMI YOSHIYUKI
IPC分类号： C04B35/10 , C04B35/111 , C04B35/573 , C04B35/591 , C04B35/622 , C04B35/638 , C04B35/64 , C04B35/65 , C04B35/571
摘要： The reaction sintered ceramic has a crystal grain orientation (as determined by the pole figure method) in the direction of a given crystallographic orientation with an orientation degree corresponding to an F value of \- 0.5, a relative density of at least 95% and a residual starting material content of less than 1 vol.% in a composition for producing a preform. Also claimed are: (i) a ceramic component in which the above reaction sintered ceramic is used and which is a mobile or stationary blade or a burner for a gas turbine, a wear-resistant element in a nuclear power station or a counter-plasma element for use in a nuclear fusion reactor; and (ii) the production of a reaction sintered ceramic, comprising moulding a mixture of staring material powder particles, heat treating to obtain a preform and supplying the preform with a gaseous or liquid reactant required to produce the ceramic product during the sintering operation in which the chemical reaction is produced in a zone which is displaced to effect sintering of the preform.

9. 发明专利

DE69120250T2 未知
公开(公告)号：DE69120250T2
公开(公告)日：1996-10-10
申请号：DE69120250
申请日：1991-03-18
申请人： HITACHI LTD
发明人： YASUTOMI YOSHIYUKI , WATAHIKI SEIJI , SAKAI JUNJI , CHIBA AKIO , MIYOSHI TADAHIKO , SOBUE MASAHISA
IPC分类号： C04B35/00 , C04B35/565 , C04B35/58 , C04B35/591 , C04B35/622 , C04B35/80 , C04B38/00 , C23C16/34 , C04B35/56 , C04B38/06 , C04B41/87
摘要： The present invention provides a composite ceramic structure of sintered ceramics having a porosity of 5 to 40 % by volume and, if necessary, a maximum pore size of 10 mu m or less comprising particles selected from the group consisting of grains and whiskers of at least one inorganic compound AB selected from the group consisting of carbides, nitrides, and oxides which are composed of an element A and an element B, where a difference in electronegativity between the element A and the element B is not higher than 1.7; or particles selected from the group consisting of grains and whiskers of an inorganic compound, between the components of which a difference in electronegativity is higher than 1.7, and having layers of the inorganic compound AB formed on the surfaces of said particles; where said particles are bonded one another with silicon nitride particles having an average particle size not more than 0.2 mu m. The composite ceramic structure is produced by sintering a shape composed of particles selected from the group consisting of grains and whiskers of at least one of the inorganic compound AB; or a shape composed of particles selected from the group consisting of grains and whiskers of an inorganic compound, between the components of which a difference in electronegativity is higher than 1.7, and having layers of the inorganic compound AB formed on the surfaces of said particles; in a gaseous atmosphere containing silicon and nitrogen to grow silicon nitride particles having an average particle size not higher than 0.2 mu m on the surfaces of said inorganic compound particles, thereby bonding said inorganic compound particles one another. A ceramic sintered shape highly accurate in dimension having a surface configuration which is a replica of the surface contour of a mold as a ceramic mechanical part of precision is also proveded.

10. 发明专利

DE69211734D1 未知
公开(公告)号：DE69211734D1
公开(公告)日：1996-08-01
申请号：DE69211734
申请日：1992-02-26
申请人： HITACHI KOKI KK , HITACHI LTD
发明人： CHIBA AKIO , SOBUE MASAHISA , TAHARA KAZUO , YAMASHITA NOBUYUKI , SUZUKI SHUN
IPC分类号： H01R39/04 , H01R39/46 , H01R43/06 , H02K13/00 , H02K13/10 , H02K11/00
摘要： A commutator has a central support (20,6,21) supporting a plurality of conductive segments (5) separated by a plurality of insulative segments (4). In addition to providing an insulative function between the conductive segments, the dielectric constant, the area, and the thickness of the insulative segments (4) are chosen so that they provide a capacitive effect, which capacitive effect suppresses current peaks during operation of the commutator. Preferably, the dielectric constant is greater than 10. The central support (20,6,21) may include a metal shaft (21) and an insulating ring (6), which insulating ring(6) is preferably of material with a lower dielectric constant thereby to suppress shorting between the shaft (21) and the conductive segments (5). It is particularly advantageous if the conductive (5) and insulative (4) segments are of ceramics material since this provides good wear resistance. In further alternatives, capacitors are formed between the conductive segments by rings (9) or other bodies (10) of insulative materials of a suitably high dielectric constant.

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