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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：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：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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公开(公告)号：US08981888B2
公开(公告)日：2015-03-17
申请号：US13997788
申请日：2011-12-19
申请人： Kenichi Suzuki , Yoshinori Fujikawa
发明人： Kenichi Suzuki , Yoshinori Fujikawa
IPC分类号： H01F7/02 , B22F3/10 , B22F9/02 , C22C33/02 , C22C38/00 , C22C38/06 , C22C38/10 , C22C38/12 , C22C38/16 , H01F1/057 , H01F1/03
CPC分类号： H01F7/0226 , B22F3/10 , B22F9/023 , C22C1/02 , C22C33/0278 , C22C38/002 , C22C38/005 , C22C38/06 , C22C38/10 , C22C38/12 , C22C38/16 , H01F1/0575
摘要： A magnetic body which can reversibly change its magnetic force with a small external magnetic field while having a high residual magnetic flux density is provided. The magnetic body of the present invention has a residual magnetic flux density Br of at least 11 kG and a coercive force HcJ of 5 kOe or less, while an external magnetic field required for the residual magnetic flux density Br to become 0 is 1.10 HcJ or less.
摘要翻译： 提供了一种能够以较小的外部磁场可逆地改变其磁力同时具有高的剩余磁通密度的磁体。 本发明的磁体具有至少11kG的残余磁通密度Br和5kOe以下的矫顽力HcJ，而剩余磁通密度Br为零所需的外部磁场为1.10HcJ或 减。
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9.发明授权Method of producing a powder, powder, and multilayered ceramic capacitor using the same 失效使用该粉末，粉末和多层陶瓷电容器的方法公开(公告)号：US07744954B2
公开(公告)日：2010-06-29
申请号：US11384508
申请日：2006-03-21
申请人： Yoshinori Fujikawa , Satoko Ueda , Kouji Tokita
发明人： Yoshinori Fujikawa , Satoko Ueda , Kouji Tokita
IPC分类号： B05D7/00
CPC分类号： C04B35/4682 , C04B35/47 , C04B35/62821 , C04B35/62886 , C04B38/009 , C04B2111/00405 , C04B2111/00844 , C04B2235/3213 , C04B2235/3215 , C04B2235/3224 , C04B2235/3225 , C04B2235/3232 , C04B2235/3236 , C04B2235/96 , H01G4/1209 , H01G4/1218 , H01G4/30 , Y10T428/2991 , C04B35/468 , C04B41/5041 , C04B35/48 , C04B35/495
摘要： A core/shell structured powder different in composition between the inside the particle and the surface thereof before sintering, so that it is possible to sinter the powder at lower temperature and give a core/shell structured powder having a shell portion uniform in thickness after sintering; a multilayered ceramic capacitor having a longer lifetime, by preparing the multilayered ceramic capacitor by using a powder having a core/shell structure different in composition between the inside the particle and the surface thereof before sintering; and a method of producing a powder by synthesizing particles in the liquid containing a raw material, wherein particles different in composition at least between the inside the particle and the surface thereof are obtained by adding a composition to be incorporated as a component of the particles to the liquid during the synthetic process so that the composition of the liquid changes continuously or intermittently.
摘要翻译： 在烧结之前，颗粒内部和表面之间的组成不同的芯/壳结构粉末，使得可以在较低温度下烧结粉末，并得到烧结后具有均匀厚度的壳体部分的芯/壳结构粉末 ; 通过在烧结之前通过使用具有与颗粒内部和其表面之间的组成不同的核/壳结构的粉末来制备多层陶瓷电容器，具有更长寿命的多层陶瓷电容器; 以及通过在含有原料的液体中合成颗粒来制造粉末的方法，其中至少在颗粒内部和其表面之间至少在颗粒内部和/或表面之间的组成不同的颗粒通过将作为颗粒的组分掺入的组合物添加到 在合成过程中的液体，使得液体的组成连续或间歇地变化。
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公开(公告)号：US20090264276A1
公开(公告)日：2009-10-22
申请号：US12385607
申请日：2009-04-14
IPC分类号： C04B35/468
CPC分类号： C04B35/468 , B82Y30/00 , C01G23/006 , C01P2004/03 , C01P2004/04 , C01P2004/54 , C01P2004/62 , C01P2004/64 , C01P2006/12 , C01P2006/40 , C04B35/62675 , C04B35/6268 , C04B35/62821 , C04B35/62897 , C04B2235/3215 , C04B2235/3232 , C04B2235/442 , C04B2235/5409 , C04B2235/5445 , C04B2235/5454 , C04B2235/5481 , C04B2235/549 , C04B2235/72 , C04B2235/724 , C04B2235/761 , C04B2235/765 , C04B2235/79
摘要： A method of producing fine and uniform barium titanate particles having high crystallinity by performing a heat treatment on titanium dioxide and barium carbonate having a specific surface area of at least 20 m2/g and low rutile ratio; comprising the steps of preparing mixed powder by mixing titanium dioxide particles having a rutile ratio of 30% or lower and a specific surface area of 20 m2/g or more and barium carbonate particles, a first heat treatment step for performing a heat treatment on the mixed powder to generate a barium titanate phase having an average thickness of at least 3 nm continuously on surfaces of titanium dioxide particles by an amount of 15 wt % or more, and a second heat treatment step for performing a heat treatment at 800° C. to 1000° C.
摘要翻译： 通过对比表面积为20m 2 / g以上的二氧化钛和碳酸钡进行热处理，生成具有高结晶度的精细且均匀的钛酸钡颗粒的方法，并且金红石比低; 包括通过将金红石比为30％以下，比表面积为20m 2 / g以上的二氧化钛粒子和碳酸钡颗粒混合来制备混合粉末的步骤，对所述碳酸钡颗粒进行热处理的第一热处理步骤 混合粉末，以在二氧化钛粒子的表面上连续地形成平均厚度为3nm以上的钛酸钡相，其量为15重量％以上，以及在800℃下进行热处理的第二热处理工序。 至1000℃
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