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公开(公告)号：US06548437B2
公开(公告)日：2003-04-15
申请号：US09835492
申请日：2001-04-17
IPC分类号： C04B35468
CPC分类号： H01G4/1227
摘要： Provided are dielectric ceramics and an electronic component capable of enhancing the longevity of insulation resistance under load at high temperature, namely, the so-called lifetime of IR degradation. A dielectric layer comprises dielectric ceramics containing BaTiO3 that is a main component; a first auxiliary component containing at least one element in a group consisting of Mg, Ca, Ba, Sr and Cr; a second auxiliary component containing SiO2; a third auxiliary component containing at least one element in a group consisting of V, Mo and W; and a fourth auxiliary component containing at least one element in a group consisting of Er, Tm, Yb, Y, Dy and Ho. Preferably, the rate of existence of crystal particles having voids in the dielectric ceramics is 10% or lower in terms of the count rate, and an average crystal particle diameter is more than 0.1 &mgr;m and not more than 0.7 &mgr;m. Thus, the lifetime of IR degradation is improved. Preferably, BaTiO3 powders synthesized by oxalate process or solid phase method and having a Ba/Ti ratio of more than 1 and less than 1.007 are used as a raw material.
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公开(公告)号：US06544916B1
公开(公告)日：2003-04-08
申请号：US09857413
申请日：2001-06-04
IPC分类号： C04B35468
CPC分类号： C04B35/4682 , H01G4/1227
摘要： A method of manufacturing a dielectric ceramic composition comprising at least BaTiO3 as a main component, a second subcomponent having SiO2 as a main component and at least one type selected from MO (note that M is at least one type of element selected from Ba, Ca, Sr and Mg), Li2O and B2O3 and other subcomponents, comprising the steps of mixing in the main component at least part of other subcomponents except for the second subcomponent to prepare a pre-calcination powder, calcining said pre-calcination powder to prepare a calcined powder, and mixing at least said second subcomponent in said calcined powder to obtain a dielectric ceramic composition having ratios of the subcomponents to BaTiO3 as the main component of predetermined molar ratios.
摘要翻译： 一种制造包含至少BaTiO 3作为主要成分的电介质陶瓷组合物的方法，具有SiO 2作为主要成分的第二次要成分和选自MO的至少一种类型（注意，M是选自Ba，Ca中的至少一种元素 ，Sr和Mg），Li 2 O和B 2 O 3等副成分，包括以下步骤：在主成分中除了第二副成分以外的至少一部分其他副成分混合以制备预煅烧粉末，煅烧所述预煅烧粉末以制备 煅烧粉末，并在所述煅烧粉末中混合至少所述第二次要组分，以获得具有作为主要组分的预定摩尔比的亚组分与BaTiO 3的比例的介电陶瓷组合物。
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公开(公告)号：US06559084B1
公开(公告)日：2003-05-06
申请号：US09618219
申请日：2000-07-18
IPC分类号： H01G412
CPC分类号： H01G4/1227 , C04B35/4682 , C04B35/803
摘要： A dielectric ceramic composition comprising a main component of BaTiO3, a first subcomponent including at least one compound selected from MgO, CaO, BaO, SrO and Cr2O3, a second subcomponent of (Ba, Ca)xSiO2+x (where, x=0.8 to 1.2), a third subcomponent including at least one compound selected from V2O5, MoO3, and WO3, and a fourth subcomponent including an oxide of R1 (where R1 is at least one element selected from Sc, Er, Tm, Yb, and Lu), a fifth subcomponent including an oxide of R2 (where R2 is at least one element selected from Y, Dy, Ho, Tb, Gb and Eu), wherein the ratios of the subcomponents to 100 moles of the main component of BaTiO3 are first subcomponent of 0.1 to 3 moles, second subcomponent of 2 to 10 moles, third subcomponent of 0.01 to 0.5 mole, fourth subcomponent of 0.5 to 7 moles, and fifth subcomponent of 2 to 9 moles (where the number of moles of the fourth and fifth subcomponents are respectively the ratio of R1 and R2 alone).
摘要翻译： 一种包含BaTiO 3的主要组分的介电陶瓷组合物，包含至少一种选自MgO，CaO，BaO，SrO和Cr 2 O 3的化合物的第一副成分，（Ba，Ca）xSiO 2 + x的第二副成分（其中x = 0.8至 1.2），包含至少一种选自V 2 O 5，MoO 3和WO 3的化合物的第三副成分和包含R 1的氧化物（其中R 1为选自Sc，Er，Tm，Yb和Lu中的至少一种元素）的第四副成分， ，其中包含R2的氧化物（其中R2是选自Y，Dy，Ho，Tb，Gb和Eu中的至少一种元素）的第五副成分，其中副成分与BaTiO 3的主成分100摩尔的比率是第一次要成分 为0.1〜3摩尔，第2副成分为2〜10摩尔，第3副成分为0.01〜0.5摩尔，第4副成分为0.5〜7摩尔，第5副成分为2〜9摩尔（第4副产物和第5副成分的摩尔数 分别是R1和R2的比率）。
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公开(公告)号：US06699809B2
公开(公告)日：2004-03-02
申请号：US10368650
申请日：2003-02-20
IPC分类号： H01G412
CPC分类号： H01G4/1227 , C04B35/4682 , C04B35/803
摘要： A dielectric ceramic composition including a dielectric base phase containing BaTiO3 as a main component, and plate-shaped or acicula deposition phase existing together in the dielectric base phase. Preferably, the dielectric ceramic composition includes a main component of BaTiO3, a first subcomponent including at least one compound selected from MgO, CaG, BaG, SrO and Cr2O3, a second subcomponent of (Ba, Ca)xSiO2+x (where, x=0.8 to 1.2), a third subcomponent including at least one compound selected from V2O5, MoO3, and WO3, and a fourth subcomponent including an oxide of R1 (where R1 is at least one element selected from Sc, Er, Tm, Yb, and Lu), a fifth subcomponent including an oxide of R2 (where R2 is at least one element selected from Y, Dy, Ho, Tb, Gb and Eu), wherein the ratios of the subcomponents to 100 moles of the main component of BaTiO3 are first subcomponent of 0.1 to 3 moles, second subcomponent of 2 to 10 moles, third subcomponent of 0.01 to 0.5 mole, fourth subcomponent of 0.5 to 7 moles, and fifth subcomponent of 2 to 9 moles (where the number of moles of the fourth and fifth subcomponents are respectively the ratio of R1 and R2 alone).
摘要翻译： 包含以BaTiO 3为主要成分的介电基底相的电介质陶瓷组合物和介电基体相中一起存在的板状或者acicula沉积相。 优选地，电介质陶瓷组合物包括主要组分BaTiO 3，第一副成分包括至少一种选自MgO，CaG，BaG，SrO和Cr2O3的化合物，第二副成分（Ba，Ca）xSiO 2 + x（其中x = 0.8〜1.2），包含至少一种选自V 2 O 5，MoO 3和WO 3的化合物的第三副成分和包含R1的氧化物的第四副成分（其中，R 1为选自Sc，Er，Tm，Yb和 Lu），其中包含R2的氧化物（其中R2是选自Y，Dy，Ho，Tb，Gb和Eu中的至少一种元素）的第五副成分，其中副成分与BaTiO 3的主要成分的100摩尔比为 第一副成分为0.1〜3摩尔，第二副成分为2〜10摩尔，第3副成分为0.01〜0.5摩尔，第4副成分为0.5〜7摩尔，第5副成分为2〜9摩尔（第4副成分 第五个子部件分别是R1和R2的比率）。
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公开(公告)号：US06403513B1
公开(公告)日：2002-06-11
申请号：US09689707
申请日：2000-10-13
IPC分类号： H01G410
CPC分类号： H01G4/1227 , C04B35/468
摘要： A dielectric ceramic composition comprising a main component of composed mainly of barium titanate, a first subcomponent including at least one compound selected from MgO, CaO, BaO, SrO and Cr2O3, a second subcomponent containing silicone oxide as a main composition, a third subcomponent including at least one compound selected from V2O5, MoO3, and WO3, a fourth subcomponent including an oxide of R1 (where R1 is at least one element selected from Sc, Er, Tm, Yb, and Lu), and a fifth subcomponent including CaZrO3 or CaO+ZrO2, wherein the ratios of the subcomponents to 100 moles of the main component of composed mainly of barium titanate are the first subcomponent of 0.1 to 3 moles, the second subcomponent of 2 to 10 moles, the third subcomponent of 0.01 to 0.5 moles, the fourth subcomponent of 0.5 to 7 moles (where the number of moles of the fourth subcomponent is the ratio of R1 alone), and the fifth subcomponent of 0
摘要翻译： 一种包含主要由钛酸钡组成的主要成分的电介质陶瓷组合物，包含至少一种选自MgO，CaO，BaO，SrO和Cr 2 O 3的化合物的第一副成分，含有氧化硅作为主要成分的第二副成分，第三副成分， 至少一种选自V 2 O 5，MoO 3和WO 3的化合物，包含R 1的氧化物（其中R 1为选自Sc，Er，Tm，Yb和Lu中的至少一种元素）的第四副成分，以及包含CaZrO 3的第五副成分或 CaO + ZrO 2，其中副成分与100摩尔主要由钛酸钡组成的主成分的比例为0.1〜3摩尔的第1副成分，2〜10摩尔的第2副成分，第2副成分为0.01〜0.5摩尔 ，第四副成分为0.5〜7摩尔（其中第四副成分的摩尔数为单独的R1的比例），第五副成分为0 <第五副成分<= 5摩尔。 根据介电陶瓷组合物，介电常数高，电容温度特性可以达到EIA标准的X8R特性（-55〜150℃，DELTAC =±15％），在 减少的气氛是可能的。
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公开(公告)号：US07919007B2
公开(公告)日：2011-04-05
申请号：US11611180
申请日：2006-12-15
CPC分类号： C04B35/2633 , C04B35/2641 , C04B35/6262 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/3227 , C04B2235/3277 , C04B2235/3418 , C04B2235/5409 , C04B2235/5445 , C04B2235/605 , C04B2235/656 , C04B2235/6562
摘要： The present invention provides a ferrite magnetic material capable of attaining such magnetic properties that Br+(⅓)HcJ is 6200 or more even by sintering at a temperature of 1150° C. or lower. The ferrite magnetic material includes as a main phase thereof a ferrite phase having a hexagonal structure, the main phase being represented by the following composition formula (1): LaxCamα1−x−m(Fe12−yCoy)z with α representing one or two of Ba and Sr; wherein the constituent ratios of the metal elements constituting the main phase satisfy the following conditions: x and m are the values in a region bounded by the points, A: (0.53, 0.27), B: (0.64, 0.27), C: (0.64, 0.35), D: (0.53, 0.45), E: (0.47, 0.45) and F: (0.47, 0.32) in the (x, m) coordinates shown in FIG. 2; 1.3≦x/yz≦1.8; and 9.5≦12z≦11.0.
摘要翻译： 本发明提供一种铁氧体磁性材料，即使在1150℃以下的温度下烧结也能够得到Br +（1/3）HcJ为6200以上的磁特性。 铁氧体磁性材料主要包括具有六方结构的铁素体相，主相由以下组成式（1）表示：LaxCamα1-x-m（Fe12-yCoy）z，其中α表示一个或两个 Ba和Sr; 其中构成主相的金属元素的组成比满足以下条件：x和m是由点限定的区域中的值，A：（0.53,0.27），B：（0.64,0 .27），C：（ 0.64,0.35），D：（0.53,0.45），E：（0.47,0.45）和F：（0.47,0.32）。 2; 1.3＆nlE; x / yz＆nlE; 1.8; 和9.5＆nlE; 12z＆nlE; 11.0。
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公开(公告)号：US07314531B2
公开(公告)日：2008-01-01
申请号：US10799153
申请日：2004-03-11
IPC分类号： H01F1/057
CPC分类号： H01F1/0577
摘要： A sintered body comprising a main phase consisting of an R2T14B phase (wherein R represents one or more rare earth elements (providing that the rare earth elements include Y), and T represents one or more transition metal elements essentially containing Fe, or Fe and Co), and a grain boundary phase containing a higher amount of R than the main phase, wherein a platy or acicular product exists. This sintered body enables to inhibit the grain growth, while keeping a decrease in magnetic properties to a minimum, and to improve a suitable sintering temperature range.
摘要翻译： 一种烧结体，其包含由R 2 2 T 14 B相构成的主相（其中R表示一种或多种稀土元素（使得稀土元素包括Y） ，T表示一种或多种基本上含有Fe或Fe和Co的过渡金属元素，以及含有比主相高的R的晶界相，其中存在片状或针状产物。 该烧结体能够抑制晶粒生长，同时将磁特性降低至最小，并提高合适的烧结温度范围。
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8.发明申请SINTERED MAGNET, MOTOR, AUTOMOBILE, AND METHOD FOR PRODUCING SINTERED MAGNET 有权烧结磁体，电动机，汽车和生产烧结磁体的方法公开(公告)号：US20130009503A1
公开(公告)日：2013-01-10
申请号：US13384896
申请日：2011-03-29
CPC分类号： H01F41/0293 , B22F2207/01 , C21D6/00 , C22C38/002 , C22C38/005 , C22C38/06 , C22C38/10 , C22C38/14 , C22C38/16 , H01F1/0577 , H01F7/02
摘要： The present invention provides a sintered magnet having superior residual magnetic flux density and coercive force. The sintered magnet of the present invention comprises a group of R-T-B based rare earth magnet crystal particles 2 having a core 4 and a shell 6 covering the core 4, the mass ratio of a heavy rare earth element in the shell 6 is higher than the mass ratio of a heavy rare earth element in the core 4, and the thickest part of the shell 6 in the crystal particles 2 faces a grain boundary triple junction 1. A lattice defect 3 is formed between the core 4 and the shell 6.
摘要翻译： 本发明提供了具有优异的剩余磁通密度和矫顽力的烧结磁体。 本发明的烧结磁体包括一组具有核心4的RTB基稀土磁体晶体颗粒2和覆盖核心4的壳体6，壳体6中的重稀土元素的质量比高于质量 芯4中的重稀土元素的比例和晶体颗粒2中的壳6的最厚部分面对晶界三重结1.在芯4和壳6之间形成晶格缺陷3。
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公开(公告)号：US20070138432A1
公开(公告)日：2007-06-21
申请号：US11611180
申请日：2006-12-15
CPC分类号： C04B35/2633 , C04B35/2641 , C04B35/6262 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/3227 , C04B2235/3277 , C04B2235/3418 , C04B2235/5409 , C04B2235/5445 , C04B2235/605 , C04B2235/656 , C04B2235/6562
摘要： The present invention provides a ferrite magnetic material capable of attaining such magnetic properties that Br+(⅓)HcJ is 6200 or more even by sintering at a temperature of 1150° C. or lower. The ferrite magnetic material includes as a main phase thereof a ferrite phase having a hexagonal structure, the main phase being represented by the following composition formula (1): LaxCamα1−x−m(Fe12−yCoy)z with α representing one or two of Ba and Sr; wherein the constituent ratios of the metal elements constituting the main phase satisfy the following conditions: x and m are the values in a region bounded by the points, A: (0.53, 0.27), B: (0.64, 0.27), C: (0.64, 0.35), D: (0.53, 0.45), E: (0.47, 0.45) and F: (0.47, 0.32) in the (x, m) coordinates shown in FIG. 2; 1.3≦x/yz≦1.8; and 9.5≦12z≦11.0.
摘要翻译： 本发明提供一种铁氧体磁性材料，即使在1150℃以下的温度下烧结也能够获得Br +（1/3）HcJ为6200以上的磁特性。 铁氧体磁性材料主要包括具有六方结构的铁素体相，其主相由以下组成式（1）表示：La x Si x Ca α1-x M（Fe 12-y Co y z）Z a，其中α代表一个或两个Ba和 锶 其中构成主相的金属元素的组成比满足以下条件：x和m是由点限定的区域中的值，A：（0.53,0.27），B：（0.64,0 .27），C：（ 0.64,0.35），D：（0.53,0.45），E：（0.47,0.45）和F：（0.47,0.32）。 2; 1.3 <= x / yz <= 1.8; 和9.5 <= 12z <= 11.0。
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10.发明申请Ceramic material powder, method of production thereof, dielectric ceramic composition, electronic device, and multilayer ceramic capacitor 审中-公开陶瓷材料粉末，其制造方法，介电陶瓷组合物，电子器件和多层陶瓷电容器公开(公告)号：US20050260410A1
公开(公告)日：2005-11-24
申请号：US11133206
申请日：2005-05-20
申请人： Yoshinori Fujikawa , Yuji Umeda , Fumikazu Yamane
发明人： Yoshinori Fujikawa , Yuji Umeda , Fumikazu Yamane
IPC分类号： B32B5/16 , C01G23/00 , C04B35/468 , C04B35/628 , H01G4/12
CPC分类号： C04B35/4682 , B32B2311/22 , C01G23/003 , C01P2006/40 , C04B35/628 , C04B35/62807 , C04B35/6281 , C04B35/62815 , C04B35/62818 , C04B35/62886 , C04B35/62894 , C04B35/62897 , C04B35/64 , C04B2235/3206 , C04B2235/3208 , C04B2235/3215 , C04B2235/3224 , C04B2235/3225 , C04B2235/3239 , C04B2235/3241 , C04B2235/3262 , C04B2235/3418 , C04B2235/441 , C04B2235/449 , C04B2235/5445 , C04B2235/6025 , C04B2235/6582 , C04B2235/6584 , C04B2235/663 , C04B2235/72 , C04B2235/724 , C04B2235/726 , C04B2235/727 , C04B2237/346 , C04B2237/405 , H01G4/1227 , Y10T428/2991
摘要： A ceramic material powder comprised of main ingredient particles formed by barium titanate having on their surfaces a covering layer comprised of a secondary ingredient additive, wherein when an average radius of the main ingredient particles is “r” and an average radius of the covering layer is “Δr”, the Δr is controlled to a range of 0015r to 0.055r, thereby enabling acquisition of a multilayer ceramic capacitor or other electronic device satisfying both the X7R characteristic prescribed in the EIAJ standard and B characteristic prescribed in the Japan Industrial Standard (JIS), that is, excellent in temperature stability of the electrostatic capacity, having a good insulation resistance value, relative dielectric constant, or other characteristics, and having a long accelerated life of the insulation resistance.
摘要翻译： 一种由钛酸钡形成的主要成分颗粒组成的陶瓷材料粉末，其表面具有由次要添加剂组成的覆盖层，其中当主要成分颗粒的平均半径为“r”且覆盖层的平均半径为 “Deltar”，Deltar控制在0015r至0.055r的范围内，从而可以获得满足EIAJ标准规定的X7R特性和日本工业标准（JIS）规定的B特性的多层陶瓷电容器或其他电子设备 ），即具有良好的绝缘电阻值，相对介电常数或其它特性，并且绝缘电阻的加速寿命长的静电电容的温度稳定性优异。
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