公开(公告)号：US5439857A

公开(公告)日：1995-08-08

申请号：US268819

申请日：1994-06-30

申请人： Sakiko Iwamoto ,  Harunobu Sano ,  Yukio Hamaji ,  Kunisaburo Tomono

发明人： Sakiko Iwamoto ,  Harunobu Sano ,  Yukio Hamaji ,  Kunisaburo Tomono

IPC分类号： C04B35/499 ,  H01G4/12 ,  C04B35/26

CPC分类号： C04B35/499 ,  H01G4/1254

摘要： A dielectric ceramic composition consists essentially of a main component of a four component system, Pb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3 --PbTiO.sub.3 --Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3 --Pb(Zn.sub.1/2 W.sub.1/2)O.sub.3, of which a part of Pb is replaced with at least one substituent selected from the group consisting of Ba, Ca and Sr; and a secondary component selected from the group consisting of w, Zn and Mg. The secondary component is incorporated in the main component in an amount of 0.05 to 10.0 parts by weight per 100 parts by weight of the main component in terms of each oxide, WO.sub.3, ZnO or MgO. The main component consists essentially of 4.0 to 93.0 mol % of Pb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3, 1.5 to 35.0 mol % of PbTiO.sub.3, 1.5 to 51.0 mol % of Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3, and 1.0 to 34.0 mol % of Pb(Zn.sub.1/2 W.sub.1/2)O.sub.3, the amount of at least one substituent for Pb being 0.1 to 10 mol %.

摘要翻译： 电介质陶瓷组合物主要由四组分Pb（Mg1 / 3Nb2 / 3）O3-PbTiO3-Pb（Ni1 / 3Nb2 / 3）O3-Pb（Zn1 / 2W1 / 2）O3的主要成分组成，其中 一部分Pb被选自Ba，Ca和Sr中的至少一种取代基取代; 和选自由w，Zn和Mg组成的组的次要组分。 相对于每种氧化物WO 3，ZnO或MgO而言，以每100重量份主成分为0.05〜10.0重量份的次要成分。 主要成分基本上由Pb（Mg1 / 3Nb2 / 3）O3的4.0〜93.0mol％，PbTiO3的1.5〜35.0mol％，Pb（Ni1 / 3Nb2 / 3）O3的1.5〜51.0mol％，以及1.0〜34.0 Pb（Zn1 / 2W1 / 2）O3的摩尔％，Pb的至少一个取代基的量为0.1〜10摩尔％。

公开(公告)号：US4388416A

公开(公告)日：1983-06-14

申请号：US318863

申请日：1981-11-06

申请人： Yukio Sakabe ,  Yukio Hamaji

发明人： Yukio Sakabe ,  Yukio Hamaji

IPC分类号： C04B35/46 ,  C04B35/475 ,  H01B3/12 ,  H01G4/12 ,  H01G4/258

CPC分类号： H01G4/258 ,  C04B35/475

摘要： Ceramic dielectric compositions for temperature compensating capacitors, exhibiting a high dielectric constant, a relatively small temperature coefficient of dielectric constant and a very excellent linearity of the temperature coefficient, comprising 1.2-19.0% by weight of SrO, 12.2-17.4% by weight of CaO, 35.8-43.9% by weight of TiO.sub.2, 15.7-37.6% by weight of Bi.sub.2 O.sub.3, 1.9-14.6% by weight of Pb.sub.3 O.sub.4 and 0.9-2.7% by weight of MgO.

摘要翻译： 用于温度补偿电容器的陶瓷电介质组合物，具有高介电常数，相对较小的介电常数温度系数和非常优异的温度系数线性，其包含1.2-19.0重量％的SrO，12.2-17.4重量％的CaO ，35.8-43.9重量％的TiO 2，15.7-37.6重量％的Bi 2 O 3，1.9〜14.6重量％的Pb 3 O 4和0.9〜2.7重量％的MgO。

公开(公告)号：US4339544A

公开(公告)日：1982-07-13

申请号：US284216

申请日：1981-07-17

申请人： Yukio Sakabe ,  Yukio Hamaji ,  Hiroshi Komatsu

发明人： Yukio Sakabe ,  Yukio Hamaji ,  Hiroshi Komatsu

IPC分类号： C04B35/46 ,  C01G33/00 ,  C04B35/499 ,  H01B3/12 ,  H01G4/12 ,  C04B35/00

CPC分类号： C04B35/499 ,  H01G4/1254

摘要： A ceramic dielectric composition of a ternary system Pb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3 -Pb(Zn.sub.1/3 Nb.sub.2/3)O.sub.3 -PbTiO.sub.3, comprising 69.05-69.60% by weight of Pb.sub.3 O.sub.4, 2.41-4.00% by weight of MgO, 0.08-3.15% by weight of ZnO, 24.01-26.66% by weight of Nb.sub.2 O.sub.5 and 0.13-2.59% by weight of TiO.sub.2. The composition can be sintered at a low firing temperature less than 1,150.degree. C., and has a high dielectric constant above 10,000.

摘要翻译： 三元体系Pb（Mg1 / 3Nb2 / 3）O3-Pb（Zn1 / 3Nb2 / 3）O3-PbTiO3的陶瓷电介质组合物，其包含69.05-69.60重量％的Pb 3 O 4，2.41-4.00重量％的MgO，0.08 -3.15重量％的ZnO，24.01-26.66重量％的Nb 2 O 5和0.13-2.59重量％的TiO 2。 该组合物可以在低于1150℃的低烧成温度下烧结，并且具有高于10,000的高介电常数。

公开(公告)号：US06500327B1

公开(公告)日：2002-12-31

申请号：US09497808

申请日：2000-02-03

申请人： Junichi Saitoh ,  Tatsuo Kunishi ,  Yukio Hamaji

发明人： Junichi Saitoh ,  Tatsuo Kunishi ,  Yukio Hamaji

IPC分类号： C25D360

CPC分类号： C25D3/60

摘要： An Sn—Bi alloy plating bath has a pH about 2.0 to 9.0 and comprises Bi3+ ions, Sn2+ ions, complexing agent (I) and complexing agent (II). Complexing agent (I) can be (a) aliphatic dicarboxylic acids having alkyl groups of 1-3 carbon atoms, (b) aliphatic hydroxymonocarboxylic acids having alkyl groups of 1-3 carbon atoms, (c) aliphatic hydroxypolycarboxylic acids having alkyl groups of 1-4 carbon atoms, (d) monosaccharides, polyhydroxycarboxylic acids produced by partially oxidizing the monosaccharides, and their cyclic ester compounds, and (e) condensed phosphoric acids. Complexing Agent (II) can be (s) ethylenediamineteraacetic acid (EDTA), (t) nitrilotriacetic acid (NTA), and (u) trans-1,2-cyclohexanediaminetetraacetic acid (CyDTA).

摘要翻译： Sn-Bi合金镀液的pH约为2.0〜9.0，含有Bi3 +离子，Sn2 +离子，络合剂（I）和络合剂（II）。 络合剂（I）可以是（a）具有1-3个碳原子的烷基的脂肪族二羧酸，（b）具有1-3个碳原子的烷基的脂族羟基单羧酸，（c）具有烷基的脂族羟基多羧酸1 -4个碳原子，（d）单糖，通过部分氧化单糖产生的多羟基羧酸及其环酯化合物，和（e）缩合磷酸。 络合剂（II）可以是乙二胺四乙酸（EDTA），（t）次氮基三乙酸（NTA）和（u）反式-1,2-环己烷二胺四乙酸（CyDTA）。

公开(公告)号：US06489257B1

公开(公告)日：2002-12-03

申请号：US09642194

申请日：2000-08-18

申请人： Takashi Hiramatsu ,  Jun Ikeda ,  Hiroyuki Wada ,  Yukio Hamaji

发明人： Takashi Hiramatsu ,  Jun Ikeda ,  Hiroyuki Wada ,  Yukio Hamaji

IPC分类号： C04B35468

CPC分类号： H01G4/1227

摘要： A dielectric ceramic material containing BaTiO3 as a primary component and a rare earth element as an additional component, wherein the material satisfies the relation 0.7≦M/N so as to make the density of the rare earth metal uniform between crystal grains, and the material satisfies the relation 0.8≦L/M so as to make the density of the rare earth metal uniform in a crystal grain. In these relations, M represents the number of crystal grains satisfying the relation 0.5≦Di/D; N represents the number of crystal grains constituting the ceramic material; and L represents the number of crystal grains satisfying the relations 0.5≦Di/D and Si/Di≦0.3, wherein Di represents the mean density of the rare earth element in an arbitrary crystal grain i, D represents the mean density of the rare earth element in the entirety of the ceramic material, and Si represents the standard deviation of the density of the rare earth element in the crystal grain i.

摘要翻译： 以BaTiO 3为主成分的电介质陶瓷材料和作为附加成分的稀土元素，其中该材料满足关系0.7 <= M / N，以使稀土金属的密度在晶粒之间均匀，而 材料满足0.8 <= L / M的关系，以使稀土金属的密度在晶粒中均匀。 在这些关系中，M表示满足0.5 <= Di / D的关系的晶粒的数量; N表示构成陶瓷材料的晶粒数; L表示满足0.5 <= Di / D和Si / Di <= 0.3的关系的晶粒数，其中Di表示任意晶粒i中稀土元素的平均密度，D表示 稀土元素在整个陶瓷材料中，Si表示稀土元素在晶粒i中的密度的标准偏差。

公开(公告)号：US06416603B1

公开(公告)日：2002-07-09

申请号：US09212671

申请日：1998-12-16

申请人： Toshiki Nishiyama ,  Yukio Hamaji

发明人： Toshiki Nishiyama ,  Yukio Hamaji

IPC分类号： H01G410

CPC分类号： H01G4/1227 ,  B32B2457/16 ,  H01H13/702 ,  H01H13/703 ,  H01H2205/006 ,  H01H2209/002 ,  H01H2209/038 ,  H01H2209/06 ,  H01H2209/082 ,  H01H2215/01 ,  H01H2215/036 ,  H01H2219/014 ,  H01H2219/034 ,  H01H2221/05 ,  H01H2221/07 ,  H01H2229/046

摘要： Disclosed is a monolithic ceramic capacitor composed of plural dielectric ceramic layers made of a ceramic material comprising strontium titanate and bismuth oxide or the like, plural inner electrodes made of a base metal material comprising nickel or a nickel alloy, which are laminated via the dielectric ceramic layer to produce the electrostatic capacity of the capacitor, and outer electrodes as electrically connected with the inner electrodes. Each dielectric ceramic layer in the capacitor contains a reduction inhibitor, for example aMO+bMnO2+cB2O3+(100−a−b−c)SiO2 (where M is at least one of Mg, Sr, Ca and Ba; and a, b and c each are, in % by mol, 10≦a≦60, 5≦b≦20 and 20≦c≦35). In producing the capacitor, the laminate of dielectric ceramic layers may be fired in a neutral or reducing atmosphere without being reduced.

摘要翻译： 公开了一种由包括钛酸锶和氧化铋等的陶瓷材料制成的多个介电陶瓷层组成的单片陶瓷电容器，由包含镍或镍合金的贱金属材料制成的多个内电极通过电介质陶瓷 以产生电容器的静电容量，以及与内部电极电连接的外部电极。 电容器中的每个电介质陶瓷层包含还原抑制剂，例如M + BMnO 2 + cB 2 O 3 +（100-abc）SiO 2（其中M是Mg，Sr，Ca和Ba中的至少一种; a，b和c各自， 以摩尔％计，10 <= a <= 60，5 <= b <= 20和20 <= c <= 35）。 在制造电容器时，介电陶瓷层的层叠体可以在中性或还原性气氛中烧制而不被还原。

公开(公告)号：US06303529B1

公开(公告)日：2001-10-16

申请号：US09234356

申请日：1999-01-20

申请人： Nobuyuki Wada ,  Takashi Hiramatsu ,  Jun Ikeda ,  Yukio Hamaji

发明人： Nobuyuki Wada ,  Takashi Hiramatsu ,  Jun Ikeda ,  Yukio Hamaji

IPC分类号： C04B3546

CPC分类号： H01G4/1227 ,  C04B35/4682

摘要： A dielectric ceramic which exhibits small variation in dielectric constant, allows use of a base metal, can be fired in a reducing atmosphere and which is suitable for constituting a dielectric ceramic layer for, e.g., a laminated ceramic capacitor is obtained by firing barium titanate powder in which the c-axis/a-axis ratio in the perovskite structure is about 1.000 or more and less than about 1.003 and the amount of OH groups in the crystal lattice is about 2.0 wt. % or less. The barium titanate powder starting material preferably has a maximum particle size of about 0.3 &mgr;m or less and an average particle size of about 0.05-0.15 &mgr;m. Each particle of the barium titanate powder preferably comprises a low-crystallinity portion and a high-crystallinity portion, the diameter of the low-crystallinity portion being about 0.5 times or more the particle size of the powder. When sintered, the powder satisfies the ratio of (average grain size of the fired dielectric ceramic)/(average particle size of barium titanate powder starting material), R, of about 0.90-1.2, to thereby suppress considerable grain growth. A laminated ceramic electronic element including a laminate of a plurality of layers of the above-mentioned dielectric ceramic, as well as a method for producing the same, is described.

摘要翻译： 介电常数变化小的电介质陶瓷可以使用贱金属，可在还原气氛中烧成，适用于构成电介质陶瓷层，例如通过烧结钛酸钡粉末得到层压陶瓷电容器 其中钙钛矿结构中的c轴/ a轴比为约1.000以上且小于约1.003，并且晶格中的OH基的量为约2.0重量％。 ％ 或更少。 钛酸钡粉末原料优选具有约0.3μm或更小的最大粒度和约0.05-0.15μm的平均粒度。 钛酸钡粉末的每个颗粒优选包含低结晶度部分和高结晶度部分，低结晶度部分的直径为粉末粒径的约0.5倍以上。 当烧结时，粉末满足（烧结的电介质陶瓷的平均粒径）/（平均粒径的钛酸钡粉末原料）的比例R为约0.90-1.2，从而抑制相当大的晶粒生长。 描述了包括上述介电陶瓷的多层的叠层体的层压陶瓷电子元件及其制造方法。

公开(公告)号：US5731950A

公开(公告)日：1998-03-24

申请号：US769109

申请日：1996-12-18

申请人： Norihiko Sakamoto ,  Harunobu Sano ,  Hiroyuki Wada ,  Yukio Hamaji

发明人： Norihiko Sakamoto ,  Harunobu Sano ,  Hiroyuki Wada ,  Yukio Hamaji

IPC分类号： C04B35/46 ,  H01B3/12 ,  H01G4/12 ,  H01G4/06 ,  H01G4/005 ,  H01G4/008 ,  H01G4/228

CPC分类号： H01G4/1227

摘要： Disclosed is a monolithic ceramic capacitor comprising dielectric ceramic layers made from a ceramic composition, which comprises an essential component of (1-.alpha.-.beta.) {BaO}.sub.m .multidot.TiO.sub.2 +.alpha.{(1-x)M.sub.2 O.sub.3 +xRe.sub.2 O.sub.3 }+.beta.(Mn.sub.1-y-z Ni.sub.y Co.sub.z)O (0.0025.ltoreq..alpha..ltoreq.0.025; 0.0025.ltoreq..beta..ltoreq.0.05; .beta./.alpha..ltoreq.4; 0

摘要翻译： 公开了一种包括由陶瓷组合物制成的介电陶瓷层的单片陶瓷电容器，其包含（1-α-β）{BaO} m×TiO 2 +α{（1-x）M 2 O 3 + xRe 2 O 3} +β（Mn 1-y -zNiyCoz）O（0.0025

公开(公告)号：US5397753A

公开(公告)日：1995-03-14

申请号：US178124

申请日：1994-01-06

申请人： Toshiki Nishiyama ,  Yukio Hamaji

发明人： Toshiki Nishiyama ,  Yukio Hamaji

IPC分类号： C04B35/46 ,  C04B35/468 ,  H01B3/12 ,  H01G4/12

CPC分类号： H01G4/1227 ,  C04B35/4682

摘要： A nonreducible dielectric ceramic composition consists essentially of: a primary component consisting essentially of 92.0 to 99.4 mol % of BaTiO.sub.3, 0.3 to 4.0 mol % of at least one of rare earth element, expressed by the general formula: Re.sub.2 O.sub.3, where Re is at least one rare earth element selected from the group consisting of Tb, Dy, Ho and Er, and 0.3 to 4.0 mol % of Co.sub.2 O.sub.3 ; a secondary component consisting essentially of BaO, MnO, MgO, and BaZrO.sub.3, the content of the secondary component being, per 100 moles of the primary component, 0.2 to 4.0 moles for BaO, 0.2 to 3.0 moles for MnO, 0.5 to 5 moles for MgO, and 0.5 to 4.0 moles for BaZrO.sub.3 ; and a vitreous component of a BaO--SrO--Li.sub.2 O--SiO.sub.2 system, the content of the vitreous component being 0.5 to 2.5 parts by weight per 100 parts by weight of the sum of the primary and secondary components.

摘要翻译： 不可还原电介质陶瓷组合物基本上由以下组成：主要组分主要由92.0至99.4mol％的BaTiO 3组成，0.3至4.0mol％的稀土元素中的至少一种，由通式Re 2 O 3表示，其中Re至少为 选自由Tb，Dy，Ho和Er组成的组中的一种稀土元素和0.3〜4.0mol％的Co 2 O 3; 基本上由BaO，MnO，MgO和BaZrO3组成的次要组分，次要组分的含量相对于100摩尔初级组分为0.2至4.0摩尔，对于MnO为0.2至3.0摩尔，MnO为0.5至5摩尔， MgO，BaZrO 3为0.5〜4.0摩尔; 和BaO-SrO-Li 2 O-SiO 2体系的玻璃状成分，玻璃质成分的含量相对于100重量份的一次成分和二次成分的总和为0.5〜2.5重量份。

公开(公告)号：US5322828A

公开(公告)日：1994-06-21

申请号：US139531

申请日：1993-10-19

申请人： Harunobu Sano ,  Yukio Hamaji ,  Kunisaburo Tomono

发明人： Harunobu Sano ,  Yukio Hamaji ,  Kunisaburo Tomono

IPC分类号： C04B35/46 ,  C04B35/49 ,  H01B3/12 ,  H01G4/12

CPC分类号： C04B35/49

摘要： A non-reducible dielectric ceramic composition consists essentially of a main component consisting essentially of oxides of BaO, CaO, MgO, TiO.sub.2, ZrO.sub.2 and Nb.sub.2 O.sub.5 and having a composition expressd by the general formula:{(Ba.sub.1-x-y Ca.sub.x Mg.sub.y)O}.sub.m (Ti.sub.1-o-p Zr.sub.o Nb.sub.p)O.sub.2+p/2wherein 0

摘要翻译： 不可还原的介电陶瓷组合物基本上由主要由BaO，CaO，MgO，TiO 2，ZrO 2和Nb 2 O 5的氧化物组成的主要组分组成，并具有由以下通式表示的组成：{（Ba1-x-yCaxMgy）O} （Ti1-o-pZroNbp）O2 + p / 2其中0