公开(公告)号：USRE38491E1

公开(公告)日：2004-04-06

申请号：US09526502

申请日：2000-03-15

申请人： Hidetoshi Mizutani ,  Masahiko Okuyama ,  Noritaka Yoshida ,  Hirofumi Ozeki ,  Hiroshi Katagiri

发明人： Hidetoshi Mizutani ,  Masahiko Okuyama ,  Noritaka Yoshida ,  Hirofumi Ozeki ,  Hiroshi Katagiri

IPC分类号： C04B35468

CPC分类号： C04B35/468 ,  C04B35/462 ,  C04B35/6261 ,  C04B35/62625 ,  C04B2235/3205 ,  C04B2235/3206 ,  C04B2235/3213 ,  C04B2235/3244 ,  C04B2235/3251 ,  C04B2235/3258 ,  C04B2235/3267 ,  C04B2235/3284 ,  C04B2235/3293 ,  C04B2235/36 ,  C04B2235/5436 ,  C04B2235/604 ,  C04B2235/79

摘要： Powders of BaCO3, TiO2, ZnO, etc. are mixed to each other at a predetermined ratio of quantity, calcined in an atmospheric air at &pgr;°-120° C., and pulverized to obtain a calcined powder having an average grain size from 1 to 3 &mgr; m, 0.1 to 20 parts-by weight of a powder having an average grain size from 0.1 to 1.5 &mgr;m comprising a glass having a transition point of not higher than 450° C. obtained by mixing powders of Pb3O4, SiO2, Na2O, etc. to each other, melting and then pouring into water and pulverizing the thus obtained glass is admixed to the calcined powder. The mixture is dried, pelleted by adding a resin and the pellet powder is molded into a cylindrical shape, applied with CIP (Cold isotartic press), and the molding product after the treatment is sintered in an atmospheric air at 850° to 1000° C. to obtain a dielectric ceramic sintered at low temperature. The resultant dielectric ceramic has high denseness and high unloaded Q value while maintaining &tgr;f within a practical range.

公开(公告)号：US5759935A

公开(公告)日：1998-06-02

申请号：US617273

申请日：1996-03-14

申请人： Hidetoshi Mizutani ,  Masahiko Okuyama ,  Noritaka Yoshida ,  Hirofumi Ozeki ,  Hiroshi Katagiri

发明人： Hidetoshi Mizutani ,  Masahiko Okuyama ,  Noritaka Yoshida ,  Hirofumi Ozeki ,  Hiroshi Katagiri

IPC分类号： C04B35/46 ,  C04B35/468 ,  H01B3/12 ,  H01P7/10

CPC分类号： C04B35/4688

摘要： Powders of BaCO.sub.3, TiO.sub.2, ZnO, etc. are mixed to each other at a predetermined ratio of quantity, calcined in an atmospheric air at 90.degree.-120.degree. C., and pulverized to obtain a calcined powder having an average grain size from 1 to 3 .mu. m. 0.1 to 20 parts-by weight of a powder having an average grain size from 0.1 to 1.5 .mu.m comprising a glass having a transition point of not higher than 450.degree. C. obtained by mixing powders of Pb.sub.3 O.sub.4, SiO.sub.2, Na.sub.2 O, etc. to each other, melting and then pouring into water and pulverizing the thus obtained glass is admixed to the calcined powder. The mixture is dried, pelleted by adding a resin and the pellet powder is molded into a cylindrical shape, applied with CIP (Cold isotactic press), and the molding product after the treatment is sintered in an atmospheric air at 850.degree. to 1000.degree. C. to obtain a dielectric ceramic sintered at low temperature. The resultant dielectric ceramic has high denseness and high unloaded Q value while maintaining .tau.f within a practical range.

摘要翻译： 将BaCO 3，TiO 2，ZnO等的粉末以规定的量彼此混合，在大气中在90〜120℃下煅烧，粉碎，得到平均粒径为1的煅烧粉末 至3亩。 0.1〜20重量份平均粒径为0.1〜1.5μm的粉末，其包含通过将Pb 3 O 4，SiO 2，Na 2 O等的粉末混合而成的转变点不高于450℃的玻璃 彼此熔融，然后倒入水中并粉碎由此获得的玻璃与煅烧粉末混合。 将混合物干燥，通过加入树脂沉淀，将颗粒粉末成型为圆筒形，涂敷CIP（冷全同立构压机），将处理后的成型体在大气中在850〜1000℃下烧结 以获得在低温下烧结的电介质陶瓷。 所得介电陶瓷具有高密度和高卸载Q值，同时将τf保持在实际范围内。

公开(公告)号：US5489559A

公开(公告)日：1996-02-06

申请号：US363333

申请日：1994-12-23

申请人： Hiroshi Katagiri ,  Hirofumi Ozeki

发明人： Hiroshi Katagiri ,  Hirofumi Ozeki

IPC分类号： C04B35/495 ,  H01G4/12 ,  C04B35/497

CPC分类号： H01G4/1254 ,  C04B35/495

摘要： The present invention provides a microwave dielectric ceramic composition in which .epsilon.r, Qu and .tau.f are generally controlled within a practical characteristic range and each of the characteristics is maintained in a well balanced state. A ceramic composition of the present invention comprises a composition represented by xBi.sub.2 O.sub.3 -(1-x) (yNb.sub.2 O.sub.5 -(1-y)Ta.sub.2 O.sub.5) in which 0.45.ltoreq.x.ltoreq.0.55 and 0.1.ltoreq.y

摘要翻译： 本发明提供了一种微波介电陶瓷组合物，其中εr，Qu和tau f通常控制在实用特征范围内，并且每个特性保持在良好平衡的状态。 本发明的陶瓷组合物包含由xBi 2 O 3 - （1-x）（yNb 2 O 5 - （1-y）Ta 2 O 5）表示的组合物，其中0.45

公开(公告)号：US5457076A

公开(公告)日：1995-10-10

申请号：US292777

申请日：1994-08-18

申请人： Hiroshi Katagiri ,  Hirofumi Ozeki

发明人： Hiroshi Katagiri ,  Hirofumi Ozeki

IPC分类号： C04B35/00 ,  C04B35/495 ,  H01B3/12 ,  H01L23/66 ,  H01P7/10 ,  H01P11/00 ,  C04B35/26 ,  C04B35/46

CPC分类号： H01B3/12 ,  C04B35/495 ,  H01L23/66 ,  H01P7/10 ,  H01L2924/0002 ,  H01L2924/3011

摘要： A ceramic composition having a high value .epsilon.r while maintaining Qu and .tau.f each in a range of practical characteristic. The present invention is applicable to dielectric resonators and impedance matching of various kinds of microwave circuits. The ceramic composition comprises Ba.sub.1-x Sr.sub.x (Zn.sub.1/3 Nb.sub.2/3)O.sub.3 (in which 0.6.ltoreq..times..ltoreq.1.0) as the main ingredient, to which TiO.sub.2 is incorporated by 0.01 to 1 parts by weight based on 100 parts by weight of the main ingredient. The ceramic composition may have a Qu value of 2000 to 2900 (at 4.5 GHz), relative dielectric constant of 39 to 42, and a temperature constant of resonance frequency (.tau.f) in the range of -8 to +10 ppm/.degree.C. The ceramic composition may not contain Sr.sub.5 Nb.sub.4 O.sub.15 or Ba.sub.4 Nb.sub.2 O.sub.9. It may index for the regularity of the B site ingredient of 7-9.times.10.sup.-2. The ceramic composition may be prepared by calcination, sintering, and an annealing treatment after sintering. A calcination atmosphere and a sintering atmosphere may be ZnO atmosphere.

摘要翻译： 具有高值εr同时在实用特性范围内保持Qu和τf的陶瓷组合物。 本发明适用于各种微波电路的介质谐振器和阻抗匹配。 陶瓷组合物包含作为主要成分的Ba1-xSrx（Zn1 / 3Nb2 / 3）O3（其中0.6≤x≤1.0），其中加入TiO 2为0.01〜1重量份，相对于100重量份 主要成分的重量。 陶瓷组合物的Qu值可以为2000〜2900（4.5GHz），相对介电常数为39〜42，共振频率（τf）的温度常数在-8〜+ 10ppm /℃的范围内 该陶瓷组合物不含Sr5Nb4O15或Ba4Nb2O9。 它可能索引B位点成分的规则为7-9x10-2。 陶瓷组合物可以通过煅烧，烧结和烧结后的退火处理来制备。 煅烧气氛和烧结气氛可以是ZnO气氛。

公开(公告)号：US5238887A

公开(公告)日：1993-08-24

申请号：US907640

申请日：1992-07-02

申请人： Tokiomi Kato ,  Hirofumi Ozeki

发明人： Tokiomi Kato ,  Hirofumi Ozeki

IPC分类号： C04B35/46 ,  C04B35/468 ,  H01B3/12 ,  H01P7/10 ,  H05B6/64

CPC分类号： C04B35/4686 ,  H01B3/12 ,  H05B6/64

摘要： Disclosed herein is a ceramic composition which gives a microwave dielectric having a permittivity and unloaded Q in a practical range and a small temperature coefficient (.tau.f) in the neighborhood of zero of resonance frequency owing to the controlled amount of ZnO and Ta.sub.2 O.sub.5 added. The .tau.f value may be positive or negative in the neighborhood of zero according to need. The ceramic composition comprises a principal component represented by (BaO-3.7TiO.sub.2).xZnO, where x is in the range of 15.ltoreq.x.ltoreq.17 wt % and a secondary component containing 2-6 wt % Ta.sub.2 O.sub.5 and not more than 1 wt % MnO.sub.2 based on the amount of the principal component. The ceramic composition may also contain BaO-3.8TiO.sub.2, 12-16 wt % ZnO, and 2-6 wt % Ta.sub.2 O.sub.5, or contain BaO-3.6TiO.sub.2, 17-19 wt % ZnO, and 2-6 wt % Ta.sub.2 O.sub.5.

摘要翻译： 本文公开了一种陶瓷组合物，其在实际范围内提供具有介电常数和无载Q的微波电介质，并且由于加入的ZnO和Ta 2 O 5的受控量，共振频率零附近的温度系数（τf）小。 根据需要，τf值可以在零附近为正或负。 陶瓷组合物包含由（BaO-3.7TiO 2）xZnO表示的主要成分，其中x在15≤x≤17重量％的范围内，次要组分含有2-6重量％的Ta 2 O 5，而不是更多 基于主成分量的1重量％以下的MnO 2。 该陶瓷组合物还可含有BaO-3.8TiO 2，12-16wt％ZnO和2-6wt％Ta 2 O 5，或含有BaO-3.6TiO 2，17-19wt％ZnO和2-6wt％Ta 2 O 5。

公开(公告)号：US5340784A

公开(公告)日：1994-08-23

申请号：US101252

申请日：1993-08-02

申请人： Tokiomi Katoh ,  Hirofumi Ozeki

发明人： Tokiomi Katoh ,  Hirofumi Ozeki

IPC分类号： C04B35/465 ,  H01P7/10 ,  C04B35/46

CPC分类号： H01P7/10 ,  C04B35/465

摘要： Disclosed herein is a microwave dielectric ceramic composition which comprises as the main ingredient, a composition represented by xMgTiO.sub.3 .multidot.(1-x)CaTiO.sub.3 (0.93.ltoreq.x .ltoreq.0.95), to which 3-9 wt % of ZnO, 2-4 wt % of Ta.sub.2 O.sub.5, 1-6 wt % of Nb.sub.2 O.sub.5, 0.1-6 wt % of MnO.sub.2, 3-12 wt % of Al.sub.2 O.sub.3 or 3-12 wt % of Co.sub.2 O.sub.3 to xMgTiO.sub.3 .multidot.(1-x)CaTiO.sub.3. And the microwave dielectric ceramic compositions have a Qu value in the range of 3000 to 4600 (at 6 GHz), a temperature coefficient of the resonance frequency (.tau.f) in the range of -10 to +10 ppm/.degree.C. and relative dielectric constant (.epsilon..sub.r) in the range of 18 to 22. The dielectric ceramic compositions are capable of reducing .tau.f approximately to zero or optionally and stably controlling .tau.f to a desired value both to positive and negative sides around zero as the center while maintaining .epsilon..sub.r and Qu within practical characteristic ranges by controlling the addition (constitution) ratio of the specified oxides. Further, even if the sintering temperature is changed within a wide range, the sintering products of high density and high quality can be attained due to the addition of the specified oxides.

摘要翻译： 本文公开了一种微波介电陶瓷组合物，其包含作为主要成分的由xMgTiO 3 x（1-x）CaTiO 3（0.93≤x≤0.95）表示的组合物，3-9重量％的ZnO， 4wt％的Ta2O5，1-6wt％的Nb2O5，0.1-6wt％的MnO2，3-12wt％的Al2O3或3-12wt％的Co2O3与xMgTiO3x（1-x）的CaTiO3。 并且微波介电陶瓷组合物的Qu值在3000〜4600（6GHz）范围内，共振频率（τf）的温度系数在-10〜+ 10ppm /℃的范围内，相对 介电常数（εr）在18至22的范围内。介电陶瓷组合物能够将τf大致降至零，或者可选地并且稳定地将tau f控制在作为中心的零点附近的正和负两侧的期望值，同时 通过控制特定氧化物的添加（构成）比，将εr和Qu保持在实用特征范围内。 此外，即使烧结温度在宽范围内变化，由于加入规定的氧化物，也可以得到高密度，高品质的烧结物。

公开(公告)号：US5310710A

公开(公告)日：1994-05-10

申请号：US864357

申请日：1992-04-06

申请人： Masanori Takase ,  Hirofumi Ozeki

发明人： Masanori Takase ,  Hirofumi Ozeki

IPC分类号： C04B35/46 ,  C04B35/468 ,  H01B3/12 ,  H01P7/10

CPC分类号： C04B35/4686

摘要： A dielectric ceramic composition which comprises a composition represented by xBaO.yNd.sub.2 O.sub.3.zTiO.sub.2 (where 8.5.ltoreq.x.ltoreq.20, 5.ltoreq.y.ltoreq.23, 62.ltoreq.z.ltoreq.85, and x+y+z=100), Y.sub.2 O.sub.3 in an amount not more than 15 wt % of the amount of said composition, and Al.sub.2 O.sub.3 in an amount not more than 2 wt % of the total amount of the principal components BaO, Nd.sub.2 O.sub.3, TiO.sub.2, and Y.sub.2 O.sub.3. And a relative permittivity .epsilon.r of the dielectric ceramic is not less than 59, its dielectric loss (tan .delta.) is 3.times.10.sup.-4 .about.8.times.10.sup.-4 (2.7 GHz), and its temperature coefficient of resonant frequency .tau.f may be -30.about.+10 ppm/.degree.C. This microwave ceramic dielectric will be used for dielectric resonators in the microwave frequency region, microwave IC substrates, and impedance matching of microwave circuits.

摘要翻译： 一种介电陶瓷组合物，其包含由xBaO.yNd2O3.zTiO2表示的组合物（其中8.5≤x≤20,5≤y≤23,62≤z= 85，x + y + z = 100），所述组合物的量不超过15重量％的Y 2 O 3，以及不超过主成分BaO，Nd 2 O 3，TiO 2的总量的2重量％以下的Al 2 O 3 Y2O3。 并且介电陶瓷的相对介电常数εr不小于59，其介电损耗（tanδ）为3×10 -4 DIFFERENCE 8×10 -4（2.7GHz），其谐振频率τf的温度系数可以为-30DIFF + 10ppm /℃。该微波陶瓷电介质将用于微波频域，微波IC基片中的介质谐振器和微波电路的阻抗匹配。

公开(公告)号：US4874727A

公开(公告)日：1989-10-17

申请号：US87658

申请日：1987-08-20

申请人： Kanji Ohya ,  Tsutomu Tsunooka ,  Koji Ogura ,  Hirofumi Ozeki ,  Takashi Yamamoto

发明人： Kanji Ohya ,  Tsutomu Tsunooka ,  Koji Ogura ,  Hirofumi Ozeki ,  Takashi Yamamoto

IPC分类号： C01G23/00 ,  C04B35/472 ,  C08K3/22 ,  H01L37/02 ,  H01L41/187

CPC分类号： C04B35/472 ,  H01L37/025 ,  H01L41/187 ,  Y10S428/901 ,  Y10T428/24322 ,  Y10T428/24917

摘要： A particulate lead titanate ceramic obtained by calcining a mixture containing TiO.sub.2 and PbO at 1150.degree.-1300.degree. C., the proportion of the PbO being greater than 1 mole per mole of the TiO.sub.2. A composite material having the particulate lead titanate ceramic supported in an organic substrate exhibits improved piezoelectric properties and is useful as a piezoelectric element or pyroelectric element.

摘要翻译： 通过在1150〜-1300℃煅烧含有TiO 2和PbO的混合物，每摩尔TiO 2的PbO比例大于1摩尔而获得的颗粒状钛酸铅陶瓷。 具有负载在有机基板中的粒状钛酸铅陶瓷的复合材料表现出改善的压电性能，并且可用作压电元件或热电元件。

公开(公告)号：US4743392A

公开(公告)日：1988-05-10

申请号：US894312

申请日：1986-08-07

申请人： Hirofumi Ozeki ,  Hideo Sobue

发明人： Hirofumi Ozeki ,  Hideo Sobue

IPC分类号： H01L41/193 ,  C04B35/46 ,  H01L41/18 ,  H01L41/187 ,  H04R1/44 ,  H04R17/00 ,  H04R17/02 ,  C04B35/00

CPC分类号： H01L41/183

摘要： A piezoelectric ceramic composite material useful for use in underwater transducers or hydrophones, including an elastic organic matrix, and piezoelectric ceramic powder dispersed in the matrix and having the following chemical formula:Pb.sub.1+x TiO.sub.3+xwherein x is a number greater than 0.

摘要翻译： 一种用于水下换能器或水听器的压电陶瓷复合材料，包括弹性有机基质和分散在基质中的压电陶瓷粉末，具有以下化学式：Pb1 + xTiO3 + x，其中x是大于0的数。

公开(公告)号：US4751014A

公开(公告)日：1988-06-14

申请号：US865066

申请日：1986-05-19

申请人： Hirofumi Ozeki ,  Hideo Sobue

发明人： Hirofumi Ozeki ,  Hideo Sobue

IPC分类号： H04R17/02 ,  C04B35/46 ,  H01L41/18 ,  H04R1/44 ,  C04B35/00

CPC分类号： H01L41/1875 ,  H01L41/183

摘要： A piezoelectric ceramic composite material useful for use in underwater transducers or hydrophones, including an elastic organic matrix, and piezoelectric ceramic powder dispersed in the substrate and having a composition:Pb.sub.1-x TiO.sub.3-xwherein x is a number of 0.005 to 0.12.

摘要翻译： 一种可用于水下换能器或水听器的压电陶瓷复合材料，包括弹性有机基质和分散在基底中的压电陶瓷粉末，并具有组成：Pb1-xTiO3-x，其中x为0.005至0.12的数。