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    • 1. 发明专利
    • 積層型電子部品
    • 层压电子元件
    • JP2014210685A
    • 2014-11-13
    • JP2013088455
    • 2013-04-19
    • Tdk株式会社Tdk CorpTdk株式会社
    • ENDO MAKOTOKIDO OSAMUOTSUKI SHIROISHIDA KEISUKE
    • C04B35/468H01G4/12H01G4/30
    • C04B35/46H01G4/12H01G4/30
    • 【課題】高い誘電率と良好な高温加速寿命を満たしつつ、高いAC電界強度でも良好な容量温度特性を有する積層型電子部品を提供すること。【解決手段】誘電体層を備える積層型電子部品であって、前記誘電体層は、BaTiO3を主成分とする複数の誘電体粒子を備え、かつ前記複数の誘電体粒子の2粒子界面に粒界相を有し、前記粒界相はBa及びTiを含み、前記粒界相における前記Ba及びTiの比率(Ba/Ti)のばらつきがCV値で表して10%未満であることを特徴とする積層型電子部品とする。【選択図】図1
    • 要解决的问题:提供具有高介电常数和良好的高温加速寿命的层叠电子部件,并且即使在高AC电场强度下也具有良好的电容温度特性。解决方案:提供具有介电层的层压电子部件。 介电层具有:主要含有BaTiO的多个介电粒子; 以及在多个介电粒子的两个粒子之间的界面处的粒子边界相。 颗粒边界相包含Ba和Ti。 在颗粒边界相中Ba与Ti的比例(Ba / Ti)的变化以CV值计小于10%。
    • 4. 发明专利
    • Dielectric ceramic composition and a multilayer ceramic capacitor
    • 电介质陶瓷组合物和多层陶瓷电容器
    • JP2013209239A
    • 2013-10-10
    • JP2012080247
    • 2012-03-30
    • Tdk CorpTdk株式会社
    • NAKAZAWA RYOMAFUKUI TAKASHINIHEI TAKAYUKIKIDO OSAMU
    • C04B35/468H01B3/12H01G4/12H01G4/30
    • PROBLEM TO BE SOLVED: To provide an electronic component that has, as a dielectric layer, a dielectric ceramic composition with a long accelerated lifetime while contenting a capacity temperature characteristic X8R (a capacitance change rate of -15% to +15% at -55°C to 150°C).SOLUTION: A dielectric ceramic composition has a core-shell structure, and includes: BaTiOof a principal ingredient; Mg or the like of a first accessory ingredient; a second accessory ingredient of at least one element chosen from Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu; Mn or the like of a third accessory ingredient; Al or the like of a fourth accessory ingredient; and Zr or the like of a fifth accessory ingredient, wherein when a concentration of the second accessory ingredient to Ti in the dielectric ceramic composition is assumed to be CP2 (at%), and a concentration of the second accessory ingredient to Ti in a shell part is assumed to be CS2 (at%), a relational expression CS2>10 (at%), and CS2/CP2>2.122 are satisfied.
    • 要解决的问题:为了提供一种电子部件,其具有作为电介质层的具有长的加速寿命的电介质陶瓷组合物,同时满足容量温度特性X8R(电容变化率为-15%至+ 15%,在-55° ℃至150℃)。溶解性:介电陶瓷组合物具有核 - 壳结构,并包括:主要成分的BaTiO; Mg等的第一辅助成分; 选自Sc,Y,La,Ce,Pr,Nd,Pm,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb和Lu中的至少一种元素的第二辅助成分; Mn等第三辅助成分; Al等第四辅助成分; 和Zr等,其中当介电陶瓷组合物中的第二辅助成分对Ti的浓度被认为是CP2(at%)时,并且第二辅助成分在壳中的Ti的浓度 部分假设为CS2(at%),满足关系式CS2> 10(at%)和CS2 / CP2> 2.122。
    • 5. 发明专利
    • Multilayered ceramic electronic component
    • 多层陶瓷电子元件
    • JP2013102123A
    • 2013-05-23
    • JP2012156363
    • 2012-07-12
    • Tdk CorpTdk株式会社
    • ENDO MAKOTOTANAKA HIROBUMIKIDO OSAMU
    • H01G4/12H01G4/232H01G4/30
    • H01G4/30H01G4/0085H01G4/12H01G4/1209H01G4/1227
    • PROBLEM TO BE SOLVED: To provide a multilayer ceramic electronic component having excellent humidity resistance and electric characteristics even when reducing the size thereof.SOLUTION: A multilayer ceramic electronic component 1 includes: an internal electrode layer formed by alternately laminating a plurality of dielectric bodies 2a and a plurality of internal electrode layers 3 containing Ni as a main component; and a pair of dielectric external layer parts 2b sandwiching the internal layer part. Ni particles are segregated in the dielectric external layer parts 2b. Moreover, the amount of the Ni particles existing in the dielectric bodies 2a is made less as compared with the dielectric body external layer part 2b.
    • 要解决的问题:即使减小其尺寸,也提供具有优异的耐湿性和电特性的多层陶瓷电子部件。 < P>解决方案:多层陶瓷电子部件1包括:内部电极层,其通过交替地层叠多个电介质体2a和包含Ni作为主要成分的多个内部电极层3而形成; 以及夹着内层部的一对绝缘外层部2b。 Ni颗粒在介质外层部分2b中分离。 此外,与电介质体外层部2b相比,存在于电介质体2a中的Ni粒子的量少。 版权所有(C)2013,JPO&INPIT
    • 6. 发明专利
    • Dielectric ceramic composition and ceramic electronic component
    • 电介质陶瓷组合物和陶瓷电子元件
    • JP2013151380A
    • 2013-08-08
    • JP2012012162
    • 2012-01-24
    • Tdk CorpTdk株式会社
    • TAKEDA SAORIHOSONO MASAKAZUSATO JUNSATO FUMIAKIKIDO OSAMUUEDA TOMOKO
    • C04B35/468H01B3/12H01G4/12H01G4/30
    • PROBLEM TO BE SOLVED: To provide a dielectric ceramic composition showing excellent reliability, while keeping a high relative dielectric constant, even when especially a dielectric layer is thinned, and to provide a ceramic electronic component to which the dielectric ceramic composition is applied, concerning the dielectric ceramic composition and the ceramic electronic component.SOLUTION: This dielectric ceramic composition contains a main component comprising barium titanate, and contains R1 (R1 is at least one kind or more between Y and Ho) as an accessory component with respect to barium titanate. The dielectric ceramic composition has a core-shell structure and has a shell satisfying an inequality: Ba site substitution amount of R1/Ti site substitution amount of R1>1. Preferably, the dielectric ceramic composition contains both R1 and R2 (R2 is at least one kind or more between Eu, Gd and Tb). More preferably, the thickness of a dielectric layer is ≤1.0 μm. Thus, effects of this invention can be heightened.
    • 要解决的问题:为了提供显示出优异的可靠性的电介质陶瓷组合物,即使在特别是电介质层变薄的同时保持高的相对介电常数,并且提供了应用电介质陶瓷组合物的陶瓷电子部件,关于 电介质陶瓷组合物和陶瓷电子部件。溶液:该电介质陶瓷组合物含有钛酸钡的主要成分,并且相对于钛酸钡,含有作为辅助成分的R1(R1和Y之间的至少一种以上)。 电介质陶瓷组合物具有核 - 壳结构,并且具有满足不等式的壳:R1 / Ti位置取代量的R1位置取代量R1> 1。 优选地,电介质陶瓷组合物含有R 1和R 2(R 2在Eu,Gd和Tb中至少一种以上)。 更优选地,电介质层的厚度为≤1.0μm。 因此,可以提高本发明的效果。
    • 9. 发明专利
    • Dielectric powder, and laminated ceramic capacitor and electronic component using the same
    • 电介质粉末和层状陶瓷电容器及使用该电容器的电子元件
    • JP2013163614A
    • 2013-08-22
    • JP2012027212
    • 2012-02-10
    • Tdk CorpTdk株式会社
    • ISHIDA KEISUKESATO JUNSATO FUMIAKIKIDO OSAMUNISHIKAWA KENICHI
    • C04B35/468C01G23/00H01B3/12H01G4/12H01G4/30
    • PROBLEM TO BE SOLVED: To provide a dielectric powder capable of forming a laminated ceramic capacitor that is less liable to short circuit and has a high reliability, even with a dielectric layer thickness of ≤0.8 μm.SOLUTION: A dielectric powder comprises: a barium titanate dielectric particle as a core particle; and a Ti-rich layer 2 with rare earth elements dissolved therein, which is present almost uniformly within a depth ranging from 0.5 nm to 10.0 nm from the outermost layer of the barium titanate particle and has a surface thereof further coated with a Ba compound 1. The Ba compound 1 in a coating layer is a composite compound with a shell component element, wherein the Ba/Ti ratio is controlled to ≥1.000 and ≤1.008, no barium carbonate equal to or larger than submicron size is contained as a heterogeneous phase, the average particle size of the dielectric powder calculated based on a BET specific surface area is ≥90 nm and ≤200 nm, and additive components other than the rare earth elements and Ba are contained as additives for adjusting characteristics.
    • 要解决的问题:为了提供能够形成不易发生短路并且具有高可靠性的层叠陶瓷电容器的电介质粉末,即使电介质层厚度≤0.8μm也是如此。解决方案:电介质粉末包括:钡 钛酸盐介电粒子作为核心颗粒; 以及其中溶解有稀土元素的富Ti层2,其从钛酸钡颗粒的最外层几乎均匀地存在于0.5nm至10.0nm的深度范围内,并且其表面还进一步涂覆有Ba化合物1 涂层中的Ba化合物1是具有壳组分元素的复合化合物,其中Ba / Ti比控制在≥1.000和≤1.008,不含有等于或大于亚微米尺寸的碳酸钡作为异相 基于BET比表面积计算的电介质粉末的平均粒径为≥90nm〜≤200nm,作为调整特性的添加剂,含有稀土元素和Ba以外的添加成分。