СПОСОБ ФОРМИРОВАНИЯ СОСТАВА ТВЕРДЫХ РАСТВОРОВ ДЛЯ ИЗДЕЛИЙ ВЫСОКОЧАСТОТНОЙ И МИКРОВОЛНОВОЙ ТЕХНИКИ (ВАРИАНТЫ)

Изобретение относится к производству материалов для электронной техники и может быть использовано в технологии производства изделий микроволновой и СВЧ-техники. В основу настоящего изобретения положено решение задачи формирования состава твердых растворов системы Х LnMO3 - (1-Х)CaTiO3, где Ln - La, Nd; М - Al, Ga, с параметрами, пригодными для создания широкой гаммы получаемых на их основе изделий, преимущественно СВЧ-техники, а именно с высокой диэлектрической проницаемостью при значении температурного коэффициента τf, близком к нулю, при сохранении высокого показателя Q x f. Способ реализуют методом твердофазного синтеза или химическим соосаждение компонентов с последующей прокалкой осадка. Предложенным способом получают диэлектрики с ε от 43 до 48 с близкой к нулю τf. Совокупность полученных характеристик определяет широкую перспективу применения этих материалов в изделиях микроволновой техники при использовании обычной керамической технологии синтеза исходных порошков. 4 с.п.ф-лы, 1 ...

СЫРЬЕ И СПОСОБ ПОЛУЧЕНИЯ СЫРЬЯ

Изобретение относится к получению сырья для производства керамических изделий с положительным температурным коэффициентом электрического сопротивления (ПТК-керамики) методом инжекционного формования. Технический результат изобретения - получение сырья с низким содержанием примесей, что позволяет сохранить в отформованном изделии необходимые электрические свойства. Керамический наполнитель, превращающийся после обжига в ПТК-керамику, смешивают с матрицей на основе термопластов, получают гранулят, который используют для инжекционного формования. Смешивание матрицы и наполнителя осуществляют в валковой мельнице. При осуществлении способа используют инструменты с низкой степенью истирания, так что получается сырье, содержащее ≤10 ч/млн металлических примесей, вызванных истиранием. Для этого поверхности инструментов, которые могут контактировать с наполнителем, содержат твердое покрытие на основе карбида вольфрама. В качестве базовых материалов для получения керамики используют BaCO, NiO, MnSOи ...

Способ получения особочистого мелкокристаллического титаната бария

Изобретение относится к области синтеза мелкокристаллического титаната бария, используемого для изготовления керамических конденсаторов. Способ включает обработку смеси диоксида титана и барийсодержащего реагента в среде на основе пара воды при повышенных температуре и давлении, при этом в качестве барийсодержащего реагента используется моногидрат нитрита бария Ba(NO)⋅HO и обработку реагентов ведут в среде смеси пара воды и аммиака; смесь порошков моногидрата нитрита бария и оксида титана берут в мольном отношении [Ва(NO)⋅НO]/ТiOот 1,0 до 1,3; в реакционном пространстве мольное отношение NHOH/НО=1/5; термообработку смеси реагентов паром, содержащим аммиак, ведут в течение времени от 1 до 16 часов в изотермических условиях при температуре, выбранной в интервале от 250 до 400°С со скоростью нагрева в интервале 50-100°С/ч и давлении пара воды от 3,98 до 26,1 МПа. Обработку паром реакционной смеси реагентов ведут при мольном отношении NHOH/ [Ba(NO)⋅HO]=2,0-3,2. Полученный продукт промывают ...

КЕРАМИЧЕСКИЙ МАТЕРИАЛ ДЛЯ ТЕРМОСТАБИЛЬНЫХ ВЫСОКОЧАСТОТНЫХ КОНДЕНСАТОРОВ

Изобретение относится к материалам электронной техники и может быть использовано в производстве высокочастотных термостабильных конденсаторов. Для снижения стоимости материала при сохранении значений электрофизических параметров часть Nd в составе керамического материала для высокочастотных конденсаторов замещена на La, а состав материала соответствует формуле Ba1-ySry(Nd0,8-xLaxBi0,2)2Ti4O12, где x = 0,1 - 0,3; y = 0,1 - 0,15. Полученный методом осаждения компонентов из растворов солей с последующей термообработкой материал имеет следующие характеристики: ε на частоте 1 МГц при 20°С 100 - 108; ТК e на частоте 0,3 МГц в температурном интервале 30-70°C(38-75)·10-6град.-1 ; tgδ при 20°С >1·10-4 ; tgδ при 150°С (2-3)·10-4 ; ρv при 150°С (3-9)·1012Oм·cм температура спекания 1240 - 1360°С. 3 табл.

ПЬЕЗОЭЛЕКТРИЧЕСКИЙ ЭЛЕМЕНТ, МНОГОСЛОЙНЫЙ ПЬЕЗОЭЛЕКТРИЧЕСКИЙ ЭЛЕМЕНТ, ГОЛОВКА ДЛЯ ВЫБРОСА ЖИДКОСТИ, УСТРОЙСТВО ДЛЯ ВЫБРОСА ЖИДКОСТИ, УЛЬТРАЗВУКОВОЙ ДВИГАТЕЛЬ, ОПТИЧЕСКОЕ УСТРОЙСТВО И ЭЛЕКТРОННОЕ УСТРОЙСТВО

... 1. Пьезоэлектрический элемент, содержащий:первый электрод;второй электрод; ипьезоэлектрический материал, включающий в свой составв качестве основного компонента оксид металла типа перовскита, представленный общей формулой (1), имарганец, включенный в состав оксида металла типа перовскита(BaCa)(TiZr)O(где 1,00≤a≤1,01, 0,02≤x≤0,30, 0,020≤y<0,095 и y≤x) (1),причем содержание марганца на металлической основе по отношению к 100 весовым частям оксида металла типа перовскита составляет 0,02 весовые части или более и 0,40 весовые части или менее,причем содержание вспомогательного компонента, не являющегося марганцем, по отношению к 100 весовым частям оксида металла типа перовскита составляет менее 2,1 весовых частей на оксидной основе,причем пьезоэлектрический материал образован кристаллическими зернами, имеющими средний круговой эквивалентный диаметр больше, чем 0,8 мкм и меньше, чем 182,0 мкм,причем пьезоэлектрический материал имеет относительную плотность 89,0% или более и 100% или менее.2.

Способ получения нанопористой керамики титаната бария

Изобретение относится к способам получения нанопористой керамики титаната бария и может быть использовано в химической промышленности для фильтрующих материалов и носителей катализаторов, в электронике и для создания нанокомпозитов с целью исследования веществ в наноразмерном состоянии. Способ получения нанопористой керамики титаната бария включает операции смешивания наноразмерных частиц титаната бария и связующего компонента с последующим прессованием заготовок и спеканием. При этом используют частицы титаната бария со средним размером частиц 50 нм, а в качестве связующего компонента – водную 50%-ную суспензию полистироловых наносфер с размером 100 нм в пересчете на содержание полистирола в шихте 5 об.%. Прессование заготовок проводят при 500 кг/см2, после чего высушивают в течение суток при комнатной температуре и спекают при температуре 1000°С в течение 2 часов. Керамика имеет пористость 20%, со средним размером пор 150 нм и одновременно обладает спонтанной поляризацией. 2 ил.

Сегнетоэлектрический керамический материал

Способ изготовления керамического титаната бария

Способ получения керамического материала

Керамический материал

КЕРАМИЧЕСКИЙ МАТЕРИАЛ преимущественно для корпусов магнитных головок, на основе тетратитаната ба ...

Состав керамической массы для капселей, подкладок и прокладок, применяемых при обжиге керамических изделий

Шихта для изготовления сегнетокерамического материала

Шихта сегнетокерамического конденсаторного материала

Изобретение относится к области радиоэлектронной техники и может быть использовано для изготовления низкочастотных керамических конденсаторов . Целью является увеличение диэлектрической проницаемости. Цель достигается за счет введения в материал на основе титаната бария добавки ZnO при следующем соотношении компонентов материала, мас.%: BaTiOg 85,7-89,8; CaZrOg 8-10; SrCO., 0,65- 1,3; ZrO-z. 0,,0; 0,50-1,0; ZnO 0,50-1,0. При заявляемом соотношении компонентов возрастает до 14000. Материал и изделия получают по традиционной технологии. 2 табл. 00 О 00 (У1 со 00 ...

Способ получения пленок титаната бария

... 1. СПОСОБ ПОЛУЧЕНИЯ ПЛЕНОК ТИТАНАТА БАРИЯ путем нанесения на подЛожку пленкообразующего раствора ал- коголятов бария и титана с последующим высушиванием, отличающийся тем, что, с целью придания пленкам титаната бария сегнетоэлектрических свойств и улучшения их качества , раствор алкоголятов готовят с отношением барий ; титан, равйым 1: ...

Керамический материал

КЕРАМИЧЕСКИЙ МАТЕРИАЛ на основе твердых растворов ВаТЮз BaZrO - MgNbj O , отличаюU н и с я тем, что, с целью повышеиня диэлектрической проницаемости и удельного объемного сопротивления , он дополнительно содержит при следующем соотношении ксяшонентов, мае. %: BaTiOj 84,00-90,45 ВаггОз 8,20-14,80 MgNb-O, 0,40-1,30 8Ь20э 0,05-0,80 ...

Шихта для изготовления сегнетокерамического конденсаторного материала

Изобретение относится к области радиоэлектронной техники, в частности к составам керамических диэлектриков, и может быть использовано для изготовления низкочастотных конденсаторов. Для сокращения потерь керамики по микротрещинам при пайке к ней выводов шихта для изготовления сегнетокерамического конденсаторного материала содержит в качестве добавки глину при следующем соотношении компонентов, мас.%: BATIO3 - 92-98 CAZRO3-0,7-4,0 NB2O5 - 0,7-2,0 SM2O3 -0,1-1,0 MNCO3 - 0,1-0,3 глиНА 0,2-0,7. Полученный по обычной керамической технологии при 1280-1360°с в течение 2 ч материал имеет следующие характеристики: ε 2900-3060 Rиз пРи 125°C 104-106 Δ C/C20 ± (13-14) количество потерь по трещинам после пайки 7-18. 2 табл.

Сегнетоэлектрический керамический материал

Керамический материал для конденсаторов

Шихта сегнетокерамического материала для конденсаторов

Изобретение относится к материалам радиоэлектронной техники и может быть использовано в производстве многослойных монолитных керамических конденсаторов. Для снижения диэлектрических потерь и повышения температурной стабильности диэлектрической проницаемости материала шихта сегнетокерамического материала для конденсаторов содержит дополнительно Y 2O 3 при следующем соотношении компонентов, мас.%: BATIO 3 88,00-89,90 CAZRO 3 7,50-7,90 ZNO 1,40-1,65 ND 2O 3 0,80-1,40 NB 2O 5 0,30-0,60 MNCO 3 0,05-0,15 и Y 2O 3 0,05-0,30. Полученный из указанной шихты материал имеет следующие характеристики: ε 20 9000-14000 Δε/ε в интервале температур (-60...+85)°С - 48...-84% TGδ 0,0021-0,0048. 2 табл.

Керамический диэлектрический материал

Сегнетоэлектрический керамический материал

Шихта для получения сегнетокерамического материала

Керамический материал

Barium titanate series semi-conductors - admixed with vanadium and opt silicon dioxide to raise positive temp resistivity coefficient

Semi-conductor ceramic compsns. of Ba titanate series, useful as a electronic components, e.g. thermistors, and activated by addn. of >=1 rare earth, Sb, Bi, Nb or Ta, are admixed with 0.001-0.5 wt. % V before firing. Positive temp. resistivity coefficient can be raised 105 times and specific resistance at room temp. can easily be adjusted to any desired value. Further addn. of 0.05-1.5 wt. % SiO2 lowers temp. at which Ba titanate compsn. is made semi-conductive and also suppresses quick changes in specific resistance of semi-conductor at room temp.

Verfahren zur Herstellung duennwandiger Keramikkoerper

Hochtemperaturkondensator

Element zur Umwandlung mechanischer in elektrische Energie oder umgekehrt, das aus polykristallinem keramischem Material besteht

DIELEKTRISCHE ZUSAMMENSETZUNG.

Dielektrische Keramiken und deren Verwendung in einem Monolithischen Kramikkondensator

Dielektrische Keramik, bestehend aus einer Hauptkomponente, die Ba, Ca und Ti enthält und die eine Perowskitstruktur aufweist, dargestellt durch die allgemeine Formel ABO3; einer erste Zusatzkomponente, die R enthält, wobei R mindestens ein Element, ausgewählt aus der Gruppe bestehend aus La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb und Y, ist; einer zweite Zusatzkomponente, die M enthält, wobei M mindestens ein Element, ausgewählt aus der Gruppe bestehend aus Mn, Ni, Co, Fe, Cr, Cu, Mg und V ist; und einer Sinterhilfe, wobei Kristallkörner der dielektrischen Keramik Ca enthalten, und die interkristalline Variation in der durchschnittlichen Ca-Konzentration in jedem Korn 5 % oder mehr beträgt.

Glass-ceramic composition used in low temperature co-fired ceramics technology comprises a ceramic material and a starting material of glass

Glass-ceramic composition comprises a ceramic material and a starting material of glass. The molar volume of the starting material is less than the molar volume of the glass material. An Independent claim is also included for a process for the production of the glass-ceramic composition comprises heat treating a glass-ceramic. Preferred Features: Heat treatment is carried out in the presence of oxygen. The glass ceramic product contains 60-90 volume % ceramic.

Glass ceramic having a specified relative permittivity used in the production of electrical components comprises a ceramic material, and a glass material containing a boron oxide, a silicon oxide, a divalent metal oxide, and a bismuth oxide

Glass ceramic having a relative permittivity of 600-10,000 comprises at least one ceramic material, and at least one glass material containing at least one oxide with boron, at least one oxide with silicon, and at least one oxide with at least one divalent metal Me<2+>. The glass material also has at least one oxide with bismuth. An Independent claim is also included for an electrical component (5) comprising the above glass ceramic. Preferred Features: The divalent metal is beryllium, magnesium, calcium, strontium, barium, copper and/or zinc.

Verfahren zur Erstellung eines keramischen Kondensators

Reduction-stable high dielectric constant ceramic material capacitors with nickel internal electrodes, comprises barium titanate core and mixed oxide shell components made using silica and boric acid sintering aid

A reduction-stable high dielectric constant ceramic material, has a barium oxide excess and comprising a barium titanate core component and a mixed oxide shell component produced using silica and boric acid as sintering aid. A reduction stable, high dielectric constant ceramic material is based on BaTiO3 as core component and an oxide mixture, preferably MgO-MnO-V2O5-Al2O3-Ho2O3-BaCO3-SrO-CaO-CoO-ZrO2, as shell component, with a BaO excess in combination with use of SiO2 and boric acid as sintering aid. The material has the general formula: (A) (BaTiO3)93.8((MgO)0.37(MnO)0.03(V2O5)0.01(Al2O3)0.2(Ho2O3)0.02+x(BaCO3 )0.93+y(SrO)0.01(CaO)0.02(CoO)0.02(ZrO2)0.04)4.96((SiO2)2-z(H3BO3)0.68 )1.24, where x = 0 to 0.22 exclusive, y = 0 to 0.5 exclusive and z = -1.25 to +0.75 exclusive; or (B) (BaTiO3)94.4((MgO)0.33(MnO)0.025(V2O5)0.01(Al2O3)0.18(Ho2O3)0.02(BaCO3 )0.61+y(SrO)0.005(CaO)0.015(CoO)0.015(ZrO2)0.03(SiO2)0.445-z(H3BO3)0.1 5)5.6, where x = 0 to 0.22 exclusive, y = 0 to 0.7 exclusive and ...

KERAMISCHE MATERIALIEN AUS BARIUMTITANAT-HOMOLOGEN

Dielectric ceramic composition for production of laminated capacitors

Dielectric composition for production of laminated capacitors having formula: (Ba1-xCaxO)mTiO2 + alpha Re2O3 + beta MgO + psi MnO Re2O3 is at least one or more of compounds Y2O3, Gd2O3, TbO3, Dy2O3, Ho2O3, Er2O3 and Yb2O3, alpha , beta , psi , m and x are molar ratio where 0.10 \- alpha \- 0.001, 0.12 \- beta \- 0.001, 0.12 \- psi \- 0.001, 1.035 \- m \> 1.000 and 0.22 \- x \> 0.005, and contains 0.2 - 5.0 parts by weight of first component of Li2O-(Si,Ti)O2-MO based oxide where MO is Al2O3 or ZrO2, and second sub-component of SiO2-TiO2-XO based oxide where XO is BaO, CaO, SrO, MgO, ZnO or MnO.

NICHTLINEARES DIELEKTRISCHES ELEMENT

Dielectric ceramic mass

Dielectric barium titanate ceramic mass with additional silicon content for multi-layer base metal capacitors.

Barium-strontium titanate-bismuth oxide ceramic dielectric - contg. titanium dioxide, giving high dielectric constant and low loss

Ceramic dielectric based on BaTiO3 and SrTiO3 with added Bi2O3 contains 18-70 (wt.) % SrTiO3, 4-75% BaTiO3 and 2.5-17.4% Bi2O3 and also contains 1.7-20% TiO2, the TiO2/Bi2O3 wt. ratio being between 1 and 18. The dielectric can also contain small amts. (pref. 0.2-0.5%) of clay and/or oxide(s) of Mn, Cr, Nb, Ta, Fe, Co and/or rare earths such as La and Ce; whilst less than 30% of the total amt. of SrTiO3 and BaTiO3 can be replaced by CaTiO3, ZnTiO3, MgTiO3 and/or CdTiO3 or less than 50% of these by PbTiO3; and less than 30% of the total amt. of TiO2, SrTiO3 and BaTiO3 by ZrO2, SnO2 and/or HfO2. The ceramic is used in vacuum or gas circuit breakers and arrestors, voltage multiplier rectifiers in television receivers or oscilloscopes etc.

Verfahren zur Herstellung einer dielektrischen Keramik sowie Bariumtitanatpulver für ein solches Verfahren

Verfahren zur Herstellung einer dielektrischen Keramik, mit folgenden Schritten: Bereitstellen eines Bariumtitanat-Pulvers, bei dem ein c-Achse/a-Achse-Verhältnis in der Perowskit-Struktur in dem Bereich von 1,003 bis 1,010 liegt und ein Betrag an OH-Gruppen in dem Kristallgitter 1 Gew.-% oder weniger beträgt, und Brennen des Bariumtitanat-Pulvers, wobei ein Bariumtitanat-Pulver verwendet wird, dessen Teilchen jeweils Abschnitte unterschiedlicher Kristallinität aufweisen, nämlich einen Abschnitt niedrigere Kristallinität und einen Abschnitt mit demgegenüber höherer Kristallinität, wobei der Durchmesser des Abschnitts niedrigerer Kristallinität weniger als 0,65 mal so groß wie der Durchmesser des jeweiligen Teilchens des Pulvers ist.

LOW-TEMPERATURE-FIRED DIELECTRIC CERAMIC COMPOSITION WITH A FLAT TEMPERATURE CHARACTERISTIC

VERFAHREN ZUR HERSTELLUNG VON KOERPERN MIT BIENENWABENSTRUKTUR AUS KERAMIKSTOFFEN DER BARIUMTITANATGRUPPE MIT POSITIVEN TEMPERATUR-WIDERSTANDS-KOEFFIZIENTEN

LOW TEMPERATURE SINTERED CERAMIC CAPACITOR WITH HIGH DC BREAKDOWN VOLTAGE, AND METHOD OF MANUFACTURE

Temperaturstabile dielektrische keramische Zusammensetzung

Halbleiterkontakt und Verfahren zu seiner Herstellung

DIELECTRIC COMPOSITIONS

... 1,218,008. Ceramic dielectrics; barium titanate ceramics. E. I. DU PONT DE NEMOURS & CO. 30 May, 1969 [31 May, 1968], No. 27601/69. Headings C1A and C1J. A dielectric composition comprises 90- 98% b.w. of a calcined mixture of 95-99À99 mole per cent BaTiO 3 with 0À01-5 mole per cent of at least one of ZrO 2 , Al 2 O 3 , SiO 2 or Nb 2 O 5 ; 1-5% b.w. of Fe 2 O 3 and 1-5% b.w. of a glass binder. Glasses specified are a bismuth borate, silicate or borosilicate, a lead bismuth borosilicate, and a lead bismuth borate. The composition can be dispersed in a liquid, e.g. water alcohols, terpenes, solutions of resins, ethyl cellulose or polymethacrylates.

An improved manufacture of thin sheets or plates of heat-treated material suitable for the dielectrics of capacitors and for other purposes

A thin cellulose paper sheet is loaded with a high proportion of powdered titania, magnesium or barium titanate, heated first under oxidizing conditions to burn off the cellulose, and then at a higher temperature to sinter the powder and form a sheet.ALSO:A thin cellulose paper sheet is loaded with a high proportion of a powder which can be softened and sintered at a temperature above that at which cellulose is destroyed and is heated first under oxidizing condition to burn off the cellulose and then at a higher temperature to sinter the powder and form the sheet. Temporary binders e.g. starch, dextrin or gelatine may be added to the cellulose pulp, and fluxes may be added to aid sintering. Specified powders are magnesium and barium titanate, titania, glass (alone or mixed with dielectric materials) powdered metals, silicon carbide and a mixture of carbon, silica and/or silicates p from which resistors are obtained. Preferably the powder exceeds 90 per cent. and in examples is 98 per cent ...

PREPARATION OF MILD FERRITES AND BARIUM TITANATES

... 1449509 Ferrites; barium titanate MONTECATINI EDISON SpA 27 Nov 1973 [30 Nov 1972] 54990/73 Addition to 1386505 Headings C1A and C1J Barium titanate and mild ferrites of formula Me(1) x Me(2) 1-x Fe3+ 2-y Me(3) y O2- 4 , where Me(1) and Me(2) are Mn2+, Co2+, Ni2+, Cu2+, Mg2+, Cd2+, Zn2+ or (¢Li++¢Fe3+), Me(3) is Al3+, Cr3+, Sc3+, Ga3+ or In3+, x is 0-1 and y is 0-2, are prepared from a slurry containing TiO 2 or ferric oxide and/or hydroxide and oxides and/or carbonates of Ba, Me(1), Me(2) and/or Me(3), by (a) drying and granulating the slurry with gases of inlet temperature 400-800‹ C., the gases being those obtained in step (b) below with or without other hot gases, to obtain granules of average particle size 150-300 microns; (c) calcining the granules at 700- 1100‹ C. for ferrites or at 1150-1200‹ C. for BaTiO 3 for 0À5-4 hr. in a fluidized bed ...

METHOD OF PRODUCING MODIFIED LEAD BARIUM TITANATE CERAMIC USEFUL AS PTC THERMISTOR

Improvements in or relating to electromechanical devices comprising dielectric operating elements

A transducer includes as an operating element a sintered ceramic material as disclosed in Specification 698,946 viz. a solid solution of one or more of the metatitanates, metazirconates and metastannates of barium, calcium and strontium with a minor amount of one or more of those of zinc or cadmium.

Improvements relating to piezo-electric devices

... 738,939. Gramophone pick-ups. GENERAL ELECTRIC CO. Oct. 29, 1953 [Oct. 30, 1952], No. 29947/53. Class 40 (4). [Also in Group XL (b)] A gramophone pick-up comprises a tubular ceramic (e.g. barium titanate) element 1 which is polarized in such a manner that it is piezoelectrically sensitive to torque. The element is attached to the end of a tone arm 25 and carries a stylus 26 which extends tangentially to the sound track in a record 28. The polarization of the element is such that variations in torque caused by the sound track produce symmetrical push-pull voltages between an inner and two outer circumferential electrodes 8, 3, 4.

Dielectric ceramic composition and monolithic ceramic component

Semiconductive ceramic positive temperature coefficient thermistor for degaussing degaussing circuit and method for manufacturing semiconductive ceramic

In a semiconductive ceramic which has a positive resistance temperature characteristic and is used as a degaussing thermistor element, the current attenuation characteristic is slowly changed without increasing the size of the element by setting a resistance temperature coefficient in the range of from about 10 to 17.

BASED DIELECTRIC COMPOSITIONS

Dielectric ceramic composition

Process film for use in producing ceramic green sheet and method for production thereof

A process film for use in producing a ceramic green sheet having a base film, an under coating layer and a cured layer, characterized in that the under coating layer comprises a condensation polymer of a metal alkoxide and/or a partially hydrolyzed product of a metal alkoxide, and the cured layer is prepared by heating an addition reaction type silicone resin composition containing a light sensitizer being applied at a rate of 0.01 to 0.3 g/m<2> in terms of solids at a temperature of 40 to 120{C and then curing the resultant layer by an ultraviolet ray irradiation. The process film, which is suitably used in producing a ceramic green sheet for a ceramic condenser, a laminated inductor element or the like, has a cured layer of a silicon resin composition exhibiting good adhesion to a base film, is excellent in the applicability of a ceramic slurry and the releasability of a ceramic green sheet, and exhibits a high degree of flatness which has not seen conventionally and improved antistatic ...

Dielectric ceramic composition and laminated ceramic condenser

PREPARING PARTICULATE CERAMIC MATERIALS

A process for preparing a particulate ceramic material comprises (a) adding carbon dioxide or an aqueous solution of a soluble carbonate to first aqueous solution of a nitrate or chloride of at least one of Ba, Sr, Ca and Mg to adjust the pH thereof to 7 - 10 to form a carbonate precipitate; and (b) adding an aqueous solution of a soluble hydroxide to a second aqueous solution of a nitrate or chloride of at least one of Ti, Zr, Sn and Pb to adjust the pH thereof to 7 - 10 to form a hydroxide precipitate. The slurries containing the precipitates are mixed and filtered and the resultant filter cake washed with water and dried to form a powder, which is then dried and ground. The ground material is useful for making dielectric elements for capacitors. a ...

Dielectric ceramic composition and capacitor using the same

Monolithic ceramic electronic component and ceramic paste

A process for producing a monolithic ceramic electronic components, e.g. a capacitor or inductor includes: forming a plurality of composite structures 6 each comprising a ceramic green sheet 2 produced by shaping a ceramic slurry, internal circuit element films 1 formed by applying a conductive paste partially onto a main surface of the sheet so as to provide step-like sections defining spaces, and a ceramic green layer 5, the layer being formed by applying the ceramic paste onto the surface of the sheet to compensate for the spaces; forming a green laminate from the structures and firing the laminate. The ceramic paste comprises a ceramic powder, an organic solvent and a binder which is a mixture of a cellulose ester and a polyacrylate.

Translucent ceramic with high refractive index

A ceramic material powder for a translucent ceramic is moulded with a binder and the resulting green compact is embedded in a ceramic powder containing at least one element in common with the green compact. The compact embedded in the ceramic powder is heated in an oxidising atmosphere to remove the binder. Thereafter the compact is fired in an oxygen concentration higher than that in the oxidising atmosphere to yield a translucent ceramic. The translucent ceramic has a refractive index of at least 1.9 and is paraelectric, having a perovskite crystal phase as a principal crystal phase. The translucent ceramic may be represented by Formula I: Ba (SnuZr1-u)xMgyTaz vOw, Formula II: Ba(ZrxMgyTaz)vOw or Formula III: Ba (SnuZr1-u)x(ZntMg1-t)yNbz vOw. The ceramic may be used as an optical part.

Monolithic ceramic electronic component and production process therefor, and ceramic paste and production process therefor

Method for preparing ceramic catalysts

A ceramic catalyst of formula AA'MM'X prepared using sol-gel and ceramic methodologies comprises preparing a sol or slurry in an organic acid, alcohol or water of an alkaline earth metal component (A) preferably barium or strontium; a powdered or liquid transition metal component (M') selected from germanium, lead, silicon, tin, aluminium, gallium, antimony, bismuth or niobium; a powdered metal component (M) wherein M is selected from titanium or zirconium; and X is oxygen/s. The formula may optionally comprise A' selected from samarium or indium; The components are refluxed or mixed together, and the powder is dried and heated with a temperature program to calcination temperatures. The catalyst is for converting methane to higher hydrocarbons by oxidative condensation (or coupling) of methane (OCM). The OCM catalyst may be mixed with a second catalyst of formula NBC/S, for CO2-reforming of methane or dehydrogenation of ethane to ethylene, wherein N is a metal selected from Group IA or ...

Improvements in or relating to dielectric materials

A valency controlled or reduced barium titanate (the terms are explained) semi-conductor, or its solid solution with their titanates is coated or impregnated with one or more elements or compounds and baked to form an insulating layer on the crystal grain boundary. Specified materials are the elements V; Cr; Mu; Fe; Co; Ni; Cu; As; Sb; Bi; Tl; Ag; Sn; Si; their oxides; K2\Cr2\O7 and Ba MuO4. Valency controlling is by adding small amounts of Nb2O5, Ta2O5, ClO2, La2O3 and Nd2\O3.

Ceramic dielectric compositions

A dielectric composition, for use in the manufacture of ceramic capacitors, and comprised of barium titanate (BaTiO3) with small additions of niobium pentoxide (Nb2O5) and gadolinium sesquioxide (Gd2O3).

Dielectric ceramic composition and laminated ceramic capacitor using the same

LOW TEMPERATURE SINTERING CERAMIC CAPACITOR

METHOD OF PRODUCING A DIELECTRIC WITH PEROWSKITE STRUCTURE

Improvements in or relating to ceramic dielectrics

A ceramic dielectric consisting of 40 to 48 mol. per cent BaO, 40 to 48 mol. per cent TiO2, 0-5 mol. per cent ZrO2, 1 to 10 mol. per cent SnO2 and 1 to 10 mol. per cent Li2O, is prepared by mixing the oxides of Ba, Ti, Zr (if desired), Sn and Li, or other compounds of these elements which are converted to such oxides on heating, in the desired proportions, shaping and then sintering at temperatures of from 1300 DEG to 1470 DEG C. Preferably two different ceramic masses are first produced by heating to a temperature of from 1100 DEG C. to 1300 DEG C., one mass comprises barium titanate or barium-titanate-zirconate (preferably 50 mol. per cent BaO, 45 mol. per cent TiO2 and 5 mol. per cent ZrO2) and the other barium titanate, stannic oxide and lithium oxide (preferably 43 mol. per cent BaO, 43 mol. per cent TiO2, 4,7 mol. per cent SnO2 and 9,3 mol. per cent Li2O). The masses are comminuted, mixed in proportions by weight of from 70:30 to 40:60 (0,1 to 2% by weight of sintering means, e.g.

Improvements in or relating to voltage-dependent resistors

... 795,724. Semi-conductor devices. SIEMENS & HALSKE AKT.-GES. Aug. 5, 1954 [Aug. 5, 1953; Aug. 18, 1953; Aug. 18, 1953; Aug. 18, 1953; April 6, 1954; April 8, 1954; April 14, 1954], No. 22790/54. Class 37. In a voltage dependent resistor consisting of silicon carbide sintered with added material which fills the spaces between the grains of silicon carbide and includes a component capable of wetting the grains during sintering, a semi-conductive intermediate layer containing a low oxide is formed on the grains by the added material. The layer is preferably of the opposite conductivity type to the silicon carbide and in this case the carbide must be selected to be all of one type, e.g. the black variety, and consist of granules of uniform size. The sintering is controlled to give a layer preferably less than a micron thick. Suitable wetting components are lead oxide and tin oxide. The added material may include compounds with directed valencies. In particular the triple oxide of the constituents ...

Method of making a semicrystalline body, a semi-crystalline body, article comprising the semicrystalline body, and method of making it

... 905,253. Ceramic glass. CORNING GLASS WORKS. June 30, 1960 [July 1, 1959; May 18, 1960], No. 23000/60. Drawings to Specification. Class 56. [Also in Group XXXVI] A semi-crystalline ceramic body intended for use as a dielectric comprises, as to at least 30- 90%, the constituent oxides of at least one oxygen octahedra ferro-electric compound, at least 30% of the body being in the form of a crystalline phase uniformly dispersed in another phase, being crystallized in situ from a homogeneous glass, the body containing at least one glass-forming oxide. The percentages quoted are " cationic mol." figures, i.e. figures calculated in respect of molecules, or part molecules, containing one cationic atom, e.g. SiO 2 , AlO 1 . 5 . The glass-forming composition is melted, cooled and heat-treated to crystallize it. The temperature at which crystallization occurs is determined by " differential thermal analysis," i.e. observing discontinuities in the rate of change of temperature, during heating, as ...

Improvements in or relating to ceramic dielectric materials

A barium titanate type material contains 0,5 to 5 mol. per cent of nickel metatitanate, and is prepared by mixing the constituent oxides or their precursors, ball milling, adding camphor, pressing, prefixing at 1100 DEG to 1150 DEG C., crushing the product, again ball milling adding camphor and shaping, and then firing at 1300 DEG -1450 DEG C. The type is defined as consisting mainly of barium titanate and including in the composition one or more basic metallic oxides, e.g. calcium, strontium, lead, zinc and cadmium. Specifications 635,746, 745,961, 840,815 and 840,816 are referred to.ALSO:A barium titanate type dielectric material contains 0,5 to 5 mol per cent. of nickel metalitanate. The type is defined as consisting mainly of barium titanate and including in the compossition one or more basic metallic oxides e.g. calcium, strontium, lead, zinc and cadmium. The material is made by mixing the constituent oxides or their precursors, ball milling, adding camphor, pressing, prefixing at ...

Miniature condenser with dielectric out of ceramics with very strong capacity and proceeded for its manufacture.

DIELECTRIC CERAMIC COMPOSITION WITH LOW SINTERTEMPERATUR AND WITH FLAT TEMPERATURE CHARACTERISTIC.

ELECTRONIC EQUIPMENT, DIELECTRIC CERAMIC COMPOSITION AND PROCEDURE FOR THE PRODUCTION

PROCEDURE FOR THE PRODUCTION OF AN FERROUSELECTRICAL COMPOSITE MATERIAL

DIELECTRIC CERAMIC(S) COMPOSITION AND CERAMIC(S) FILM CAPACITOR

DIELECTRI CERAMIC COMPOSITION, CONDENSER THIS USING AND MANUFACTURING PROCESSES

PROCEDURE FOR THE PRODUCTION OF BARIUM TITANATE

CERAMIC ELECTRICAL WIDERSTANDSKORPER AND PROCEDURE FOR ITS PRODUCTION

CONTINUOUS PROCEDURE FOR THE PRODUCTION OF FERRITES

CONDENSER DIELECTRIC WITH INTERNAL BLOCKAGE LAYERS AND PROCEDURES FOR ITS PRODUCTION

DIELECTRIC CERAMIC COMPOSITION AND ELECTRONIC DEVICE

CERAMIC POWDER, CERAMIC LAYER AND LAYER SYSTEM WITH PYROCHLORPHASE AND OXIDES

DIELECTRIC MATERIAL of the SYSTEM (1X) BAO.XTIO2 IN PARTICULAR FOR USE IN a MICROWAVE DEVICE.

PROCEDURE FOR THE PRODUCTION OF ALKALINE EARTH METAL TITANATE.

PROCEDURE FOR THE DISTANCE OF A VIRUS BY USE OF A POROUS HOLLOW FIBER DIAPHRAGM.

TEMPERATURE-STABLE DIELECTRIC CERAMIC COMPOSITION

HIGH TEMPERATURE-STABLE DIELECTRIC MATERIAL

CERAMIC DIELECTRIC COMPOSITIONS

CERAMIC ELECTRICAL WIDERSTANDSKORPER AND PROCEDURE FOR ITS PRODUCTION

Lossy high frequency filter

CONTINUOUS PROCEDURE FOR THE PRODUCTION OF FERRITES

KERAMISCHER ELEKTRISCHER WIDERSTANDSKORPER UND VERFAHREN ZU SEINER HERSTELLUNG

Electrical logic element and procedure for its production

Procedure for the production of ceramic, dielectric material

METHOD FOR PREPARING BARIUM-TITANATE BASED POWDER

CERAMIC WITH ELECTRICALLY VARIABLE BIREFRINGENCE

Method of manufacturing ceramic electronic component, ceramic electronic component, and wiring board

A method of manufacturing a ceramic electronic component prevents variations in characteristics even when the ceramic electronic component is embedded in a wiring board. Ceramic green sheets containing an organic binder having a degree of polymerization in a range from about 1000 to about 1500 are prepared. A first conductive paste layer is formed on a surface of each of the ceramic green sheets. The ceramic green sheets are laminated to form a raw ceramic laminated body. A second conductive paste layer is formed on a surface of the raw ceramic laminated body. The raw ceramic laminated body formed with the second conductive paste layer is fired.

Reduction-resistant dielectric composition and ceramic electronic component including the same

There are provided a reduction-resistant dielectric composition and a ceramic electronic component including the same. The reduction-resistant dielectric composition may include a BaTiO 3 -based matrix powder, 0.1 to 1.0 moles of a transition metal oxide or transition metal carbonates, based on 100 moles of the matrix powder, and 0.1 to 3.0 moles of a sintering aid including silicon oxide (SiO 2 ). The ceramic electronic component including the reduction-resistant dielectric composition may have a high capacitance and superior reliability.

Dielectric ceramic and laminated ceramic capacitor

A dielectric ceramic and a laminated ceramic capacitor using the dielectric ceramic are achieved which provide favorable thermal shock resistance without damaging properties or characteristics such as dielectric properties, insulation properties, temperature characteristics, and characteristics in high temperature loading, even when the dielectric layers are reduced in thickness and the number of stacked layers increased. The dielectric ceramic contains, as its main constituent, a barium titanate based compound represented by the general formula ABO 3 , and a crystalline oxide containing Al, Mg, and Si is present as secondary phase grains in the dielectric ceramic.

Dielectric composition having high dielectric constant, multi layered ceramic condensers comprising the same, and method of preparing for multi layered ceramic condensers

A dielectric composition having a high dielectric constant, multi layered ceramic condensers comprising the same, and a method of preparing for multi layered ceramic condensers. The dielectric composition includes: a compound represented by general formula (Ba 1-X Ca x ) m (Ti 1-y Zr y )O 3 (0.995≦m≦1.010, 0.001≦x≦0.10, 0.001, 0.001≦y≦0.20) as a main component; an Al oxide as a first sub-component; at least one metal selected from a group consisting of Mg, Sr, Ba, Ca, and Zr and the salt thereof, as a second sub-component; at least one metal selected from a group consisting of Sc, Y, La, Ac, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu and the salt thereof, as a third sub-component; at least one metal selected from a group consisting of Cr, Mo, W, Mn, Fe, Co, and Ni and the salt thereof, as a fourth sub-component; and a fifth sub-component selected from Si containing glass forming compounds.

Method for producing perovskite type composite oxide

A method is provided which includes a reaction step of reacting at least titanium oxide, a calcium compound, and barium hydroxide in a slurry solution so as to produce a perovskite-type composite oxide. The perovskite-type composite oxide is represented by (Ba 1-x Ca x ) m TiO 3 , and x is within a range of 0<x≦0.125. In addition, the method provides a perovskite-type composite oxide in which a water-soluble calcium compound is used as the calcium compound, and when the perovskite-type composite oxide is represented by (Ba 1-x Ca x ) m TiO 3 , x is within a range of 0<x≦0.20.

Dielectric ceramic composition and ceramic electronic device

A dielectric ceramic composition comprises barium titanate as a main component, and as subcomponents, 1.00 to 2.50 moles of an oxide of Mg, 0.01 to 0.20 mole of an oxide of Mn and/or Cr, 0.03 to 0.15 mole of an oxide of at least one element selected from a group consisting of V, Mo and W, 0.20 to 1.50 mole of an oxide of R1 where R1 is at least one selected from a group consisting of Y and Ho, 0.20 to 1.50 mole of an oxide of R2 where R2 is at least one selected from a group consisting of Eu, Gd and Tb and 0.30 to 1.50 mole of an oxide of Si and/or B, in terms of each oxide with respect to 100 moles of the barium titanate.

Multi-layered ceramic electronic component

There is provided a multi-layered ceramic electronic component including: a ceramic main body including a dielectric layer; and inner electrode layers disposed to face each other, with the dielectric layer interposed therebetween, in the ceramic main body, wherein when an average thickness of the dielectric layer is defined as t d , the average thickness t d is t d ≧15 μm, and the number of dielectric grains per 10 μm within the dielectric layer is 15 or greater. Since a uniform, thick dielectric layer can be obtained with fine dielectric powder, a high voltage multi-layered ceramic electronic component having excellent withstand voltage characteristics can be implemented.

Oriented Perovskite Oxide Thin Film

A thin film which comprises an organic metal salt or an an alkoxide salt or an amorphous thin film is formed on a substrate, wherein each of the thin films enables the formation of a Dion-Jacobson perovskite-type metal oxide represented by the composition formula A(B n−1 M n O 3n+1 ) (wherein n is a natural number of 2 or greater; A represents one or more monovalent cations selected from Na, K, Rb and Cs; B comprises one or more components selected from a trivalent rare earth ion, Bi, a divalent alkaline earth metal ion and a monovalent alkali metal ion; and M comprises one or more of Nb and Ta; wherein a solid solution may be formed with Ti and Zr) on a non-oriented substrate. The resulting product is maintained at the temperature between room temperature and 600° C.; and crystallization is achieved while irradiating the amorphous thin film or the thin film comprising the organic metal salt or the alkoxide salt on the substrate with ultraviolet light such as ultraviolet laser. In this manner, it becomes possible to produce an oriented Dion-Jacobson perovskite-type oxide thin film characterized in that thin film can be oriented on the substrate in a (001) direction.

Dielectric composition and ceramic electronic component including the same

There is provided a dielectric composition including: a base powder; a first accessory component including a content (x) of 0.1 to 1.0 at % of an oxide or a carbonate including transition metals, based on 100 moles of the base powder; a second accessory component including a content (y) of 0.01 to 5.0 at % of an oxide or a carbonate including a fixed valence acceptor element, based on 100 moles of the base powder; a third accessory component including an oxide or a carbonate including a donor element; and a fourth accessory component including a sintering aid.

Method for producing slurry composition

The present invention provides a method for producing a slurry composition which realizes excellent dispersibility through simple steps and can maintain high dispersibility over a long term. In addition, the present invention provides a slurry composition produced using this method. The present invention provides s method for producing a slurry composition containing an inorganic powder, a polyvinyl acetal resin, and an organic solvent, the method comprising the steps of: mixing an inorganic powder, a mixed polyvinyl acetal resin (A) and an organic solvent for inorganic dispersion to prepare an inorganic dispersion; mixing a polyvinyl acetal resin (B) and an organic solvent for resin solution to prepare a resin solution; and adding the resin solution to the inorganic dispersion, the mixed polyvinyl acetal resin (A) including a polyvinyl acetal resin (a1) having a hydroxy group content of 20 to 40 mol % and a polyvinyl acetal resin (a1) having a hydroxy group content of 28 to 60 mol %, the polyvinyl acetal resin (a1) and the polyvinyl acetal resin (a2) being in a relation represented by the following formula (1): Y−X ≧5   (1) wherein X represents the hydroxy group content (mol %) in the polyvinyl acetal resin (a1), and Y represents the hydroxy group content (mol %) in the polyvinyl acetal resin (a2), the polyvinyl acetal resin (B) having a polymerization degree of 800 to 4200, and an amount of the mixed polyvinyl acetal resin (A) used in the step of preparation of the inorganic dispersion being 0.1 to 20 parts by weight relative to 100 parts by weight of the inorganic powder.

Non-reducible low temperature sinterable dielectric ceramic composition for multi layer ceramic capacitor and manufacturing method thereof

The present invention relates to a dielectric ceramic composition for multilayer ceramic capacitor (MLCC), including a first component of 91 to 98 wt % and a second component of 2 to 9 wt %, wherein the first component includes a main component BaTiO 3 of 94 to 98 wt %, a first subcomponent of 0.5 to 2 wt % including a glass powder having a mesh structure, and a second subcomponent of 1 to 4 wt % including at least one of MgO, Cr 2 O 3 and Mn 3 O 4 , and the second component includes (Ba 1-y-x Ca y Sr x )(Zr y Ti 1-y )O 3 , and x satisfies 0.2≦x≦0.8 and y satisfies 0.03≦y≦0.15.

Dielectric Ceramic Material and Multilayer Ceramic Capacitor Using the Same

A dielectric ceramic material comprises a primary component of barium titanate (BaTiO 3 ) and at least one additive component. The additive component has a mole percentage from 1% to 50% and is selected from the group consisting of lithium tantalite (LiTaO3), barium cerate (BaCeO 3 ), sodium metaniobate (NaNbO 3 ) and the combinations thereof.

Ceramic powder and multi-layer ceramic capacitor

A ceramic powder that contains, as a main composition, barium titanate powder having a perovskite structure with an average particle size (median size) of 200 nm or smaller as measured by SEM observation, wherein the barium titanate powder is such that the percentage of barium titanate particles having twin defects in the barium titanate powder is 13% or more as measured by TEM observation and that its crystal lattice c/a is 1.0080 or more. The ceramic powder has a wide range of optimum sintering temperatures and thus offers excellent productivity and is particularly useful in the formation of thin dielectric layers of 1 μm or less.

CERAMIC POWDER AND MULTI-LAYER CERAMIC CAPACITOR

A ceramic powder that contains, as a main composition, barium titanate powder having a perovskite structure with an average particle size (median size) of 200 nm or smaller as measured by SEM observation, wherein the the barium titanate powder is such that the percentage of barium titanate particle having twin defects in the barium titanate powder is less than 10% as measured by TEM observation and that its crystal lattice c/a is 1.0075 or more. The ceramic powder is particularly useful in the formation of thin dielectric layers of 1 μm or less and can be used to manufacture MLCCs having both desired capacity and longevity traits. 1. A ceramic powder that contains , as a main composition , barium titanate powder having a perovskite structure with an average particle size (median size) of 200 nm or smaller as measured by SEM observation , wherein the barium titanate powder is such that the percentage of barium titanate particles having twin defects in the barium titanate powder is less than 10% as measured by TEM observation and that its crystal lattice c/a is 1.0075 or more.2. A ceramic powder according to claim 1 , wherein the percentage of barium titanate particles having twin defects in the barium titanate powder is 5 to 9%.3. A ceramic powder according to claim 1 , wherein the crystal lattice c/a of the barium titanate powder is 1.0075 to 1.0104.4. A ceramic powder according to claim 2 , wherein the crystal lattice c/a of the barium titanate powder is 1.0075 to 1.0104.5. A ceramic powder according to claim 1 , wherein the average particle size of the barium titanate powder is 80 to 150 nm.6. A ceramic powder according to claim 2 , wherein the average particle size of the barium titanate powder is 80 to 150 nm.7. A ceramic powder according to claim 3 , wherein the average particle size of the barium titanate powder is 80 to 150 nm.8. A ceramic powder according to claim 4 , wherein the average particle size of the barium titanate powder is 80 to 150 nm.9. A multi- ...

Multilayered ceramic component

Disclosed herein is a multilayered ceramic component having a structure in which internal electrode layers and dielectric layers are alternately multilayered, wherein the internal electrode layer includes 0.01 to 12 wt % of common material based on weight of metal powders, and an average particle size of the common material is within 30% of an average particle size of the metal powders. According to the first exemplary embodiment of the present invention, the particle size and the added amount of common material squeezed out from the internal electrode layer at the time of firing at a high temperature are controlled, thereby making it possible to improve the connectivity of the internal electrode.

MULTILAYER CERAMIC CAPACITOR, DIELECTRIC CERAMIC, MULTILAYER CERAMIC ELECTRONIC COMPONENT, AND METHOD FOR MANUFACTURING MULTILAYER CERAMIC CAPACITOR

A dielectric ceramic that can be sintered at a sufficiently low temperature and has a desired specific resistance at a high temperature, and a multilayer ceramic electronic component (a multilayer ceramic capacitor and the like) using the dielectric ceramic are provided. The multilayer ceramic capacitor includes a multilayer body having a plurality of laminated dielectric ceramic layers, and a plurality of internal electrodes at interfaces between the dielectric ceramic layers; and external electrodes and on outer surfaces of the multilayer body. The composition of the multilayer body includes a perovskite-type compound containing Ba and Ti (where a part of Ba may be substituted by Ca, and a part of Ti may be substituted by Zr) as a primary ingredient, and further includes M (where M is at least one of Cu, Zn, Li, K, and Na) and Bi. The total content of M and Bi is equal to or greater than 3 molar parts when the total content of Ti and Zr is 100 molar parts. The crystal particle size of the dielectric ceramic is 30 nm or more and 150 nm or less. 1. A multilayer ceramic capacitor comprising a multilayer body having a plurality of laminated dielectric ceramic layers and a plurality of internal electrodes 'wherein the dielectric comprises a perovskite-type compound containing Ba and Ti in which a part of Ba may be substituted by Ca, and a part of Ti may be substituted by Zr as a primary ingredient, and further includes Bi and one of M and Q, in which M is at least one member of the group consisting of Cu, Zn, Li, K, and Na, and Q is at least one member of the group consisting of Ba, Ca and Sr,', 'at different interfaces between said dielectric ceramic layers; and external electrodes on an outer surface of said multilayer body,'}the total content of M, Q and Bi is equal to or greater than 3 molar parts when the total content of Ti and Zr is 100 molar parts, andthe crystal particle size of said dielectric is 30 nm or more and 150 nm or less.2. The multilayer ceramic ...

LAMINATED CERAMIC CAPACITOR

A dielectric ceramic composition is represented by BaTiO+aReO+bMnO+cVO+dMoO+eCuO+fBO+gLiO+xSrO+yCaO (wherein Re represents one or more elements selected from among Eu, Gd, Dy, Ho, Er, Yb, and Y; and a-h each represents the mole number of each component with respect to 100 mol of the main component that is composed of BaTiO). When the molar ratio of (Ba+Sr+Ca)/Ti contained in the dielectric ceramic composition is represented by m, the 0.10≦a≦0.50, 0.20≦b≦0.80, 0≦c≦0.12, 0≦d≦0.07, 0.04≦c+d≦0.12, 0≦e≦1.00, 0.50≦f≦2.00, 0.6≦(100(m−1)+2g)/2f≦1.3, and 0.5≦100(m−1)/2g≦5.1 are satisfied. 1. A dielectric ceramic composition constituted by a primary component constituted by BaTiOand auxiliary components constituted by Re , Mn , V , Mo , Cu , B , Li , Ca , and Sr , wherein it is expressed by BaTiO+aReO+bMnO+cVO+dMoO+eCuO+fBO+gLiO+xSrO+yCaO (where Re represents at least one type of element selected from Eu , Gd , Dy , Ho , Er , Yb , and Y , and a to g , x , and y represent mol numbers relative to 100 mol of the primary component constituted by BaTiO) and , when a mol ratio of (Ba+Sr+Ca)/Ti contained in the dielectric ceramic composition is given by m , 0.10≦a≦0.50 , 0.20≦b≦0.80 , 0≦c≦0.12 , 0≦d≦0.07 , 0.04≦c+d≦0.12 , 0≦e≦1.00 , 0.50≦f≦2.00 , 0.6≦(100(m−1)+2g)/2f≦1.3 , 0.5≦100(m−1)/2g≦5.1 , 0≦x≦1.5 , and 0≦y≦1.5.2. A dielectric ceramic composition according to claim 1 , wherein Si contained as impurity accounts for 1.0 mol or less in equivalent SiOrelative to 100 mol of the primary component constituted by BaTiO.3. A dielectric ceramic composition according to claim 1 , wherein it is expressed by (BaSrCa)TiO+aReO+bMnO+cVO+dMoO+eCuO+fBO+gLiO+xSrO+yCaO claim 1 , where 0≦x+v×100≦1.5 and 0≦y+w×100≦1.5.4. A dielectric ceramic composition according to claim 1 , wherein it can be made denser at a sintering temperature of 1030° C. or below.5. A laminated ceramic capacitor comprising multiple dielectric ceramic layers as well as internal electrodes formed between the dielectric ceramic ...

METHOD OF MANUFACTURING PEROVSKITE POWDER, PEROVSKITE POWDER MANUFACTURED BY THE SAME AND MULTILAYER CERAMIC ELECTRONIC COMPONENT

There are provided a method of manufacturing perovskite powder, and perovskite powder and a multilayer ceramic electronic component manufactured thereof. The manufacturing method includes: washing metal oxide hydrate to remove impurities therefrom; adding pure water and an acid or a base to the metal oxide hydrate to prepare a metal oxide sol; mixing the metal oxide sol with a metal salt to form perovskite particle nuclei; and conducting grain growth of the perovskite particle nuclei by hydrothermal treatment to produce perovskite powder. The method of manufacturing perovskite powder and the perovskite powder manufactured by the same have advantages such as excellent crystallinity, reduced generation of fine powder, and favorable dispersion properties. 1. A method of manufacturing perovskite powder , the method comprising:washing metal oxide hydrate to remove impurities therefrom;adding pure water and an acid or a base to the metal oxide hydrate to prepare a metal oxide sol;mixing the metal oxide sol with a metal salt to form perovskite particle nuclei; andconducting grain growth of the perovskite particle nuclei by hydrothermal treatment to produce perovskite powder.2. The method of manufacturing pervoskite powder of claim 1 , wherein the metal oxide sol has a degree of transmittance of more than 50%.3. The method of manufacturing perovskite powder of claim 1 , wherein the metal oxide sol has a particle size of less than 10 nm.4. The method of manufacturing perovskite powder of claim 1 , wherein the perovskite powder is at least one selected from a group consisting of BaTiO claim 1 , BaTiZrO claim 1 , BaYTiO claim 1 , BaDyTiOand BaHoTiO(0 Подробнее

DIELECTRIC CERAMIC AND LAMINATED CERAMIC CAPACITOR

A dielectric ceramic that contains, as its main constituent, main-phase grains including a perovskite-type compound containing Ba, Ca, and Ti; first heterogeneous-phase grains containing Ca, a rare-earth element, and Si; and second heterogeneous-phase grains containing no Ca and containing the rare-earth element and Si. The second heterogeneous-phase grains are present in the dielectric ceramic in a ratio of 0.05 or less (including 0) of the number of the second heterogeneous-phase grains to the total of the first heterogeneous-phase grains and the second heterogeneous-phase grains. In the first heterogeneous-phase grains, the content of Ca is preferably 8% or more in terms of molar ratio with respect to the total content of Ca, the rare-earth element, and Si. 1. A dielectric ceramic comprising:main-phase grains including a perovskite-type compound containing Ba, Ca, and Ti, the main-phase grains being a main constituent of the dielectric ceramic;first heterogeneous-phase grains containing Ca, a rare-earth element, and Si; andsecond heterogeneous-phase grains containing no Ca and containing the rare-earth element and Si, the second heterogeneous-phase grains being present in the dielectric ceramic in a ratio of 0.05 or less of the number of the second heterogeneous-phase grains to the total of the first heterogeneous-phase grains and the second heterogeneous-phase grains.2. The dielectric ceramic according to claim 1 , wherein the Ca contained in the main-phase grains is present at least near centers of the main-phase grains.3. The dielectric ceramic according to claim 1 , wherein the rare-earth element includes at least one or more elements selected from the group consisting of Y claim 1 , Gd claim 1 , Tb claim 1 , Dy claim 1 , Ho claim 1 , Er claim 1 , Tm claim 1 , and Yb.4. The dielectric ceramic according to claim 3 , wherein the rare-earth element is in an amount of 1.0 parts by mol or more with respect to 100 parts by mol of the Ti.5. The dielectric ceramic ...

Multilayered ceramic electronic component and manufacturing method of the same

There is provided a multilayered ceramic electronic component including: a ceramic body in which a plurality of dielectric layers are stacked; a plurality of first and second internal electrodes formed on at least one of the dielectric layers and alternately exposed through both ends of the ceramic body in a stacking direction of the ceramic body; an a step compensation cover including a ceramic material having a viscosity higher than that of a ceramic material included in the ceramic body and formed on at least one of an upper surface and a lower surface of the ceramic body.

DIELECTRIC CERAMIC, MULTI-LAYER CERAMIC CAPACITOR AND METHOD OF MANUFACTURING THE SAME

A dielectric ceramic is formed with sintered grains constituting the dielectric have an average grain size of 0.2 to 1.0 gm and an oxygen defect concentration of 0.2 to 0.5%. An acceptor element is added to the dielectric ceramic by no more than 0.5 mol per 100 mol of the primary component of BaTiO. The oxygen defect concentration is temporarily increased by reduction and sintering, after which the oxygen defect concentration is reduced through the subsequent re-oxidization process. Crystal strain generated in the re-oxidization process increases the dielectric constant. 1. A dielectric ceramic whose sintered grains constituting dielectric have an average grain size of 0.2 to 1.0 μm and an oxygen defect concentration of 0.2 to 0.5%.2. A dielectric ceramic according to claim 1 , wherein the dielectric contains ABO(A represents an element containing Ba claim 1 , while B represents an element containing Ti) as a primary component claim 1 , where an acceptor element is contained by p mol per 100 mol of ABOand p representing p mol number of the acceptor element is in a range of 0 Подробнее

LAMINATED CERAMIC CAPACITOR

Provided is a laminated ceramic capacitor that can suppress the decrease in insulation resistance after a moisture-resistance loading test. It contains ceramic layers which include: main-phase grains that have a perovskite-type compound containing Ba and Ti and optionally containing Ca, Sr, Zr, and Hf; and secondary-phase grains that have an average grain size of 100 nm or more and have a Si content of 50 mol % or more per grain, the average grain boundary number, represented by (Average Thickness for Ceramic Layers )/(Average Grain Size for Main Phase Grains)−1, is greater than 0 and 3.0 or less, and the average grain size for the secondary-phase grains is 1/4 or more of the average thickness for the ceramic layers 1. A laminated ceramic capacitor comprising: a laminate comprising a plurality of stacked ceramic layers and a plurality of internal electrodes disposed at interfaces between the ceramic layers; and a plurality of external electrodes on an outer surface of the laminate and electrically connected to the internal electrodes , main-phase grains having a perovskite-type compound containing Ba and Ti and optionally containing one or more of Ca, Sr, Zr, and Hf; and', 'secondary-phase grains having an average grain size of 100 nm or more and having a Si content (calculated after excluding oxygen) of 50 mol % or more per grain,, 'wherein the ceramic layers comprisethe average grain boundary number, (Average Thickness for Ceramic Layers)/(Average Grain Size for Main Phase Grains)−1, is greater than 0 and 3.0 or less, andthe average grain size of the secondary-phase grains is ¼ or more of the average thickness for the ceramic layers.2. The laminated ceramic capacitor according to claim 1 , wherein the perovskite-type compound is barium titanate.3. The laminated ceramic capacitor according to claim 2 , wherein the secondary-phase grains having an average grain size of 200 to 320 nm claim 2 , the average grain boundary number is at least 0.8 claim 2 , and the ...

DIELECTRIC CERAMIC, LAMINATED CERAMIC ELECTRONIC COMPONENT, LAMINATED CERAMIC CAPACITOR, AND METHOD FOR PRODUCING LAMINATED CERAMIC CAPACITOR

There are provided a dielectric ceramic having large specific resistance and even capacitance characteristic at 150° C., as well as a laminated ceramic electronic component employing such a dielectric ceramic. A ceramic layer includes crystal grains, the ceramic layer containing a perovskite type compound containing Ba, Ca, Ti, and Zr, containing Si, and optionally containing Mn. When the total content of Ti and Zr is 1 molar part, the content of Mn is 0.015 molar part or less, the content of Si is 0.005 molar part or more and less than 0.03 molar part, the molar ratio x of Ca/(Ba+Ca) satisfies 0.05 Подробнее

DIELECTRIC COMPOSITION HAVING HIGH DIELECTRIC CONSTANT, MULTILAYERED CERAMIC CONDENSERS COMPRISING THE SAME, AND METHOD OF PREPARING FOR MULTILAYERED CERAMIC CONDENSERS

A dielectric composition having a high dielectric constant, multi layered ceramic condensers comprising the same, and a method of preparing for multi layered ceramic condensers. The dielectric composition includes: a compound represented by general formula (BaCa)(TiZr)O(0.995≦m≦1.010, 0.001≦x≦0.10, 0.001≦y≦0.20) as a main component; an Al oxide as a first sub-component; at least one metal selected from a group consisting of Mg, Sr, Ba, Ca, and Zr and the salt thereof, as a second sub-component; at least one metal selected from a group consisting of Sc, Y, La, Ac, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu and the salt thereof, as a third sub-component; at least one metal selected from a group consisting of Cr, Mo, W, Mn, Fe, Co, and Ni and the salt thereof, as a fourth sub-component; and a fifth sub-component selected from Si containing glass forming compounds. 1. A dielectric composition having a high dielectric constant , comprising:{'sub': 1-X', 'x', 'm', '1-y', 'y', '3, 'a compound represented by general formula (BaCa)(TiZr)O(0.995≦m≦1.010, 0.001≦x≦0.10, 0.001≦y≦0.20) as a main component;'}an Al oxide as a first sub-component;at least one metal selected from a group consisting of Mg, Sr, Ba, Ca, and Zr and the salt thereof, as a second sub-component;at least one metal selected from a group consisting of Sc, La, Ac, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu and the salt thereof, as a third sub-component;at least one metal selected from a group consisting of Cr, Mo, W, Mn, Fe, Co, and Ni and the salt thereof, as a fourth sub-component; and{'sub': '2', 'a fifth sub-component SiO.'}2. The dielectric composition having a high dielectric constant according to claim 1 , wherein the dielectric composition includes 0.001 to 1.0 mole of the first sub-component claim 1 , 0.01 to 4.00 mole of the second sub-component claim 1 , 0.01 to 3.0 mole of the third sub-component claim 1 , 0.01 to 1.5 mole of the fourth sub-component claim 1 , and 0.3 ...

DIELECTRIC COMPOSITION AND MULTILATER CERAMIC ELECTRONIC COMPONENT MANUFACTURED USING THE SAME

There are provided a dielectric composition and a multilayer ceramic electronic component manufactured using the same, the dielectric composition including a dielectric grain having a perovskite structure represented by ABO, wherein, when an imaginary line is drawn in a direction from a center of the dielectric grain to a grain boundary thereof, a content of rare earth elements in a region corresponding to 0.75 to 0.95% of the dielectric grain from the center of the dielectric grain may be 0.5 to 2.5 at %, based on 100 at % of a B-site ion, so that the multilayer ceramic electronic component manufactured using the dielectric composition can have excellent reliability and secure a high dielectric constant. 1. A dielectric composition , comprising a dielectric grain having a perovskite structure represented by ABO , wherein , when an imaginary line is drawn in a direction from a center of the dielectric grain to a grain boundary thereof , a content of rare earth elements in a region corresponding to 0.75 to 0.95% of the dielectric grain from the center of the dielectric grain is 0.5 to 2.5 at % , based on 100 at % of a B-site ion.2. The dielectric composition of claim 1 , wherein the content of rare earth elements in the region corresponding to 0.75 to 0.95% of the dielectric grain from the center of the dielectric grain is 0.05 to 2.0 times a content of rare earth elements in the center of the dielectric grain.3. The dielectric composition of claim 1 , wherein the A includes one or more selected from a group consisting of barium (Ba) claim 1 , strontium (Sr) claim 1 , lead (Pb) claim 1 , and calcium (Ca).4. The dielectric composition of claim 1 , wherein the B includes one or more selected from a group consisting of titanium (Ti) and zirconium (Zr).5. The dielectric composition of claim 1 , wherein the rare earth elements include a trivalent ion.6. The dielectric composition of claim 1 , wherein the rare earth elements include one or more selected from a group ...

DIELECTRIC CERAMIC AND SINGLE-PLATE CAPACITOR

A dielectric ceramic that contains, as its main constituent, a perovskite-type compound containing Ba and Ti, and, with respect to the Ti content of 100 parts by mole, contains Re1 (Re1 is at least one element of La and Nd) in the range of 0.15 to 3 parts by mole, Y in the range of 0.1 to 3 parts by mole, Mg in the range of 0.3 to 13 parts by mole, and Fe in the range of 0.01 to 5 parts by mole. 1. A dielectric ceramic comprising:a main constituent of a perovskite-type compound containing Ba and Ti, and further comprising Re1, Y, Mg, and Fe, whereinRe1 is at least one element of La and Nd, and the content of Re1 is 0.15 to 3 parts by mole,', 'the content of Y is 0.1 to 3 parts by mole,', 'the content of Mg is 0.3 to 13 parts by mole, and', 'the content of Fe is 0.01 to 5 parts by mole., 'when the content of Ti is 100 parts by mole,'}2. The dielectric ceramic according to claim 1 , wherein the perovskite-type compound further contains Ca.3. The dielectric ceramic according to claim 2 , wherein a molar ratio α of Ba/(Ba+Ca) is 0.4≦α≦1.4. The dielectric ceramic according to claim 3 , wherein the perovskite-type compound is barium titanate.5. The dielectric ceramic according to claim 4 , wherein α=1.6. The dielectric ceramic according to claim 1 , wherein the dielectric ceramic is obtained by firing in the atmosphere.7. The dielectric ceramic according to claim 1 , further comprising at least one of a rare-earth element claim 1 , V and Al.8. A single-plate capacitor comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the dielectric ceramic according to ; and'}electrodes on opposed principal surfaces of the dielectric ceramic.9. The single-plate capacitor according to claim 8 , wherein the electrodes are sputtered electrodes.10. The single-plate capacitor according to claim 8 , further comprising a respective lead connected to each of the electrodes.11. The single-plate capacitor according to claim 8 , further comprising a resin coating covering the dielectric ...

DIELECTRIC COMPOSITION AND MULTILAYER CERAMIC ELECTRONIC COMPONENT MANUFACTURED USING THE SAME

There are provided a dielectric composition and a multilayer ceramic electronic component manufactured using the same, the dielectric composition including a dielectric grain having a perovskite structure represented by ABO, wherein the dielectric grain has a core-shell structure in which a content of an additive in a shell is 15% or less, based on an average content of the additive distributed throughout the dielectric grain, so that the multilayer ceramic electronic component manufactured using the dielectric composition can have excellent reliability and secure a high dielectric constant. 1. A dielectric composition , comprising a dielectric grain having a perovskite structure represented by ABO , wherein the dielectric grain has a core-shell structure in which a content of an additive in a shell is 15% or less , based on an average content of the additive distributed throughout the dielectric grain.2. The dielectric composition of claim 1 , wherein the content of the additive is measured at intervals of 5 nm in the shell.3. The dielectric composition of claim 1 , wherein the A includes one or more selected from a group consisting of barium (Ba) claim 1 , strontium (Sr) claim 1 , lead (Pb) claim 1 , and calcium (Ca).4. The dielectric composition of claim 1 , wherein the B includes one or more selected from a group consisting of titanium (Ti) and zirconium (Zr).5. The dielectric composition of claim 1 , wherein the additive includes a rare earth element including a trivalent ion.6. The dielectric composition of claim 1 , wherein the additive is one or more selected from a group consisting of scandium (Sc) claim 1 , yttrium (Y) claim 1 , lanthanum (La) claim 1 , actinium (Ac) claim 1 , cerium (Ce) claim 1 , praseodymium (Pr) claim 1 , neodymium (Nd) claim 1 , promethium (Pm) claim 1 , samarium (Sm) claim 1 , europium (Eu) claim 1 , gadolinium (Gd) claim 1 , terbium (Tb) claim 1 , dysprosium (Dy) claim 1 , holmium (Ho) claim 1 , erbium (Er) claim 1 , thulium (Tm) ...

DIELECTRIC CERAMIC COMPOSITION AND MULTILAYER CERAMIC CAPACITOR INCLUDING THE SAME

A dielectric ceramic composition may include a base material main ingredient and an accessory ingredient. The accessory ingredient contains one or more selected from a group consisting of oxides and carbonates of one or more elements among Bi, Li, and Cu. When the accessory ingredient contains Bi, a content of Bi may be 0.1 to 1.0 part by mole, based on 100 parts by mole of the base material main ingredient, when the accessory ingredient contains Li, a content of Li may be 0.1 to 1.0 part by mole, based on 100 parts by mole of the base material main ingredient, and when the accessory ingredient contains Cu, a content of Cu may be 0.1 to 1.0 part by mole, based on 100 parts by mole of the base material main ingredient. 1. A dielectric ceramic composition comprising a base material main ingredient and an accessory ingredient ,wherein the accessory ingredient contains one or more selected from a group consisting of oxides and carbonates of one or more elements among Bi, Li, and Cu, andwhen the accessory ingredient contains Bi, a content of Bi is 0.1 to 1.0 part by mole, based on 100 parts by mole of the base material main ingredient,when the accessory ingredient contains Li, a content of Li is 0.1 to 1.0 part by mole, based on 100 parts by mole of the base material main ingredient, andwhen the accessory ingredient contains Cu, a content of Cu is 0.1 to 1.0 part by mole, based on 100 parts by mole of the base material main ingredient.2. The dielectric ceramic composition of claim 1 , wherein the base material main ingredient comprises one or more selected from a group consisting of BaTiO claim 1 , (BaCa) (TiCa)O(0≦x≦0.3 and 0≦y≦0.1) claim 1 , (BaCa)(TiZr)O(0≦x≦0.3 and 0≦y≦0.5) claim 1 , and Ba(TiZr)O(0 Подробнее

MULTILAYER CERAMIC CAPACITOR, MANUFACTURING METHOD THEREOF, AND BOARD HAVING THE SAME

A multilayer ceramic capacitor may include: a ceramic body having first and second main surfaces opposing each other in a thickness direction and first and second end surfaces opposing each other in a length direction, a thickness of the ceramic body being greater than a width thereof; a first external electrode disposed on the first end surface and having a greater thickness in a region thereof adjacent to the second main surface than in a region thereof adjacent to the first main surface; a second external electrode disposed on the second end surface and having a greater thickness in a region thereof adjacent to the second main surface than in a region thereof adjacent to the first main surface; and first and second internal electrodes disposed in the ceramic body and connected to the first and second external electrodes, respectively. 1. A multilayer ceramic capacitor comprising:a ceramic body having first and second main surfaces opposing each other in a thickness direction and first and second end surfaces opposing each other in a length direction, a thickness of the ceramic body being greater than a width thereof;a first external electrode disposed on the first end surface and having a greater thickness in a region thereof adjacent to the second main surface than in a region thereof adjacent to the first main surface;a second external electrode disposed on the second end surface and having a greater thickness in a region thereof adjacent to the second main surface than in a region thereof adjacent to the first main surface; andfirst and second internal electrodes disposed in the ceramic body and connected to the first and second external electrodes, respectively.2. The multilayer ceramic capacitor of claim 1 , wherein when a maximum thickness of upper portions of the first and second external electrodes is defined as a claim 1 , and a maximum thickness of lower portions of the first and second external electrodes is defined as b claim 1 , 1.5≦b/a≦4 is ...

ELECTRONIC COMPONENT

An electronic component includes external nickel layers each provided on end surfaces of a multilayer body and external copper electrode layers each covering the end surfaces on which the external nickel layers are provided. When a dimension of each of the external nickel layers in the lamination direction is defined as TN, and a dimension of the inner layer portion in the lamination direction is defined as T1, T1 Подробнее

CAPACITOR COMPONENT

A capacitor component includes a body including a dielectric layer, a layering portion in which first and second internal electrodes opposing each other are layered in a first direction, and first and second connecting portions disposed on both surfaces of the layering portion taken in a second direction perpendicular to the first direction and connected to the first and second internal electrodes, respectively; and first and second external electrodes disposed on the first and second connecting portions, respectively, and the first and second external electrodes include metal powder particles, a surface of each of which is coated with at least one of graphene and carbon nanotubes. 1. A capacitor component , comprising: a layering portion comprising first and second internal electrodes opposing each other and layered in a first direction with a dielectric layer interposed therebetween, and', 'first and second connecting portions disposed on opposing surfaces of the layering portion taken in a second direction perpendicular to the first direction and respectively connected to the first and second internal electrodes; and, 'a body including'}first and second external electrodes disposed on the first and second connecting portions, respectively,wherein the first and second external electrodes include metal powder particles, each having a surface thereof coated with at least one of graphene and carbon nanotubes.2. The capacitor component of claim 1 , wherein the first and second connecting portions include a metal layer disposed on the layering portion and a ceramic layer disposed on the metal layer.3. The capacitor component of claim 2 , wherein a thickness of the metal layer is in a range from 1 μm to 10 μm.4. The capacitor component of claim 2 , wherein a thickness of the ceramic layer is in a range from 3 μm to 15 μm.5. The capacitor component of claim 1 , wherein a ratio of a minimum value of a thickness of each of the first and second connecting portions to a ...

MULTILAYER CERAMIC CAPACITOR

A multilayer ceramic capacitor includes a body including a dielectric layer and first and second internal electrodes disposed with the dielectric layer interposed therebetween in a stacking direction, and including a first surface and a second surface opposing each other in the stacking direction, a first through electrode penetrating the body and connected to the first internal electrode; a second through electrode penetrating the body and connected to the second internal electrode, first and second external electrodes disposed on the first surface and the second surface, respectively, and connected to the first through electrode, third and fourth external electrodes spaced apart from the first and second external electrodes and connected to the second through electrode, and an identifier disposed on the first surface or the second surface of the body, and the first and second through electrodes protrude from the first surface of the body. 1. A multilayer ceramic capacitor , comprising:a body including a dielectric layer and first and second internal electrodes disposed with the dielectric layer interposed therebetween in a stacking direction, the body including a first surface and a second surface opposing each other in the stacking direction;a first through electrode penetrating the body and connected to the first internal electrode;a second through electrode penetrating the body and connected to the second internal electrode;first and second external electrodes disposed on the first surface and the second surface, respectively, and each connected to the first through electrode;third and fourth external electrodes disposed on the first surface and the second surface, respectively, to be spaced apart from the first and second external electrodes and each connected to the second through electrode; andan identifier disposed on the first surface or the second surface of the body.2. The multilayer ceramic capacitor of claim 1 , wherein the first and second through ...

MULTILAYER CERAMIC CAPACITOR

A multilayer ceramic capacitor includes a body and an external electrode on the body. The body includes a dielectric layer and an internal electrode. The external electrode includes an electrode layer connected to the internal electrode, a first plating portion on the electrode layer, and a second plating portion on the first plating portion. The first plating portion includes a plurality of plating layers in which a tin (Sn)-plated layer and a nickel (Ni)-plated layer are alternately stacked. 1. A multilayer ceramic capacitor comprising:a body including a dielectric layer and an internal electrode; andan external electrode on the body,wherein the external electrode includes an electrode layer connected to the internal electrode, a first plating portion on the electrode layer, and a second plating portion on the first plating portion, andwherein the first plating portion includes a plurality of plating layers, including a plurality of tin (Sn)-plated layers alternately stacked with one or more nickel (Ni)-plated layers.2. The multilayer ceramic capacitor of claim 1 , wherein a first plating layer claim 1 , of the plurality of plating layers of the first plating portion claim 1 , is in contact with the electrode layer and is one of the plurality of Sn-plated layers.3. The multilayer ceramic capacitor of claim 1 , wherein the first plating portion comprises claim 1 , in order claim 1 , a first Sn-plated layer on the electrode layer claim 1 , a Ni-plated layer claim 1 , and a second Sn-plated layer.4. The multilayer ceramic capacitor of claim 1 , wherein a first thickness of the first plating portion is less than a second thickness of the second plating portion.5. The multilayer ceramic capacitor of claim 1 , wherein a first thickness of the first plating portion is ½ or less of a second thickness of the second plating portion.6. The multilayer ceramic capacitor of claim 1 , wherein a thickness of a Sn-plated layer of the first plating portion is within a range of 0.1 ...

Dielectric Ceramic Material and Multilayer Ceramic Capacitor Using the Same

A dielectric ceramic material comprises a primary component of barium titanate (BaTiO) and at least one additive component. The additive component has a mole percentage from 1% to 50% and is selected from the group consisting of lithium tantalite [lithium tantalate (LiTaO3)], barium cerate (BaCeO), sodium metaniobate [sodium niobate (NaNbO)] and the combinations thereof. 1. A multilayer ceramic capacitor , comprising:{'sub': '3', 'a ceramic capacitor body, including a plurality of dielectric ceramic lavers and a plurality of inner cathode layers and inner anode layers formed along surfaces of the dielectric ceramic layers, wherein the dielectric ceramic layers are formed by sintering a dielectric ceramic mate comprising a primary component of barium titanate (BaTiO) and an additive component, wherein the additive component has a mole percentage from 1% to 50% and has a Curie temperature more than 200° C., and the inner cathode layers and the inner anode layers are staggered arranged;'}an outer cathode; andan outer anode, wherein the outer cathode and the outer anode are formed on outside of the ceramic capacitor body and respectively connected electrically to the inner cathode layers and the inner anode layers.2. The multilayer ceramic capacitor of claim 1 , wherein a capacitor temperature coefficient of the multilayer ceramic capacitor satisfies the X8R and X9R characteristics of the Electronics Industry Association (EIA) standard claim 1 , an operating temperature range of the multiplayer ceramic capacitor is between −55 to 200° C. claim 1 , with zero bias capacitance shift limited to 15% and a dielectric loss lower than 2%.3. The dielectric ceramic material of claim 1 , wherein the additive component is 1% to 50% molar percent of lithium tantalite.4. The dielectric ceramic material of claim 1 , wherein the additive component is 1% to 50% molar percent of barium cerate (BaCeO). This application is a Divisional of co-pending Application No. 13/569,616, filed on Aug ...

ENERGY STORAGE DEVICES HAVING COATED PASSIVE COMPONENTS

The present invention provides various passive electronic components comprising a layer of coated particles, and methods for producing and using the same. Some of the passive electronic components of the invention include, but are not limited to conductors, resistors, current collectors, capacitors, piezoelectronic devices, inductors and transformers. The present invention also provides energy storage devices and electrode layers for such energy storage devices having passive, electrically-conductive particles coated with one or more thin film materials. 1. An electrode layer for an energy storage device comprising active and passive components , wherein the electrode layer comprises passive , electrically-conductive particles coated with a thin film of protective material; wherein a function of the said electrode layer is substantially the same to a similar electrode layer of passive , electrically-conductive particles in the absence of said protective material.2. The electrode layer of claim 1 , wherein the passive claim 1 , electrically-conductive particles are metallic and/or polymeric.3. The electrode layer of claim 2 , wherein the metallic and/or polymeric particles comprise aluminum claim 2 , platinum claim 2 , silver claim 2 , gold claim 2 , titanium claim 2 , copper claim 2 , zinc claim 2 , chromium claim 2 , nickel claim 2 , iron claim 2 , molybdenum claim 2 , tungsten claim 2 , ruthenium claim 2 , palladium claim 2 , indium claim 2 , PtNi claim 2 , FeCrAlY claim 2 , AgPd claim 2 , nichrome claim 2 , other conductive steels claim 2 , PEDOT claim 2 , other conductive polymers claim 2 , or combinations thereof.4. The electrode layer of claim 1 , wherein the passive claim 1 , electrically-conductive particles comprise carbons claim 1 , carbon black claim 1 , acetylene black claim 1 , activated carbon claim 1 , carbon nanotubes claim 1 , carbon fibers claim 1 , vapor grown carbon fibers claim 1 , carbon nanoribbons claim 1 , graphite claim 1 , graphene claim 1 ...

METHOD OF PRODUCING DIELECTRIC MATERIAL

A method of producing a dielectric material by preparing a slurry by mixing a dielectric powder, water, one of an organic-acid metal salt and an inorganic metal salt, and an organic silicon compound, causing the slurry to come into contact with an anion exchange resin to remove an anion derived from the one of the organic-acid metal salt and the inorganic metal salt from the slurry, and drying the slurry to obtain the dielectric material. 1. A method of producing a dielectric material , the method comprising:preparing a slurry by mixing a dielectric powder, water, a metal salt, and an organic silicon compound;bringing the slurry into contact with an anion exchange resin to remove an anion derived from the metal salt from the slurry; anddrying the slurry to obtain the dielectric material.2. The method of producing a dielectric material according to claim 1 , wherein the metal salt is an organic-acid metal salt.3. The method of producing a dielectric material according to claim 2 , wherein the organic-acid metal salt is of at least one kind of organic acid selected from monocarboxylic acids claim 2 , dicarboxylic acids claim 2 , trivalent or greater carboxylic acids claim 2 , and hydroxy carboxylic acids each having 6 or less carbon atoms.4. The method of producing a dielectric material according to claim 1 , wherein the metal salt is an inorganic metal salt.5. The method of producing a dielectric material according to claim 4 , wherein the inorganic metal salt is a water-soluble metal salt.6. The method of producing a dielectric material according to claim 4 , wherein the inorganic metal salt is selected from metal chlorides claim 4 , metal nitrates claim 4 , metal sulfates claim 4 , and metal carbonates.7. The method of producing a dielectric material according to claim 1 , wherein the organic silicon compound is an alkoxysilane represented by:{'br': None, 'sub': '4', 'Si—(OR)'}wherein, R represents one of a methyl group and an ethyl group, and each R is a same or ...

DIELECTRIC COMPOSITION AND MULTILAYER CERAMIC ELECTRONIC COMPONENT

A dielectric composition includes dielectric particles. At least one of the dielectric particles include a main phase and a secondary phase. The main phase has a main component of barium titanate. The secondary phase exists inside the main phase and has a higher barium content than the main phase. 1. A dielectric composition comprising dielectric particles , wherein at least one of the dielectric particles include:a main phase having a main component of barium titanate; anda secondary phase existing inside the main phase and having a higher barium content than the main phase.2. The dielectric composition according to claim 1 , wherein the secondary phase has a particle size of 10 nm or more and 100 nm or less.3. The dielectric composition according to claim 1 , wherein a ratio (Ba/Ti) of a barium element content to a titanium element content in the secondary phase is 1.2-2.0.4. The dielectric composition according to claim 1 , wherein an area ratio occupied by the dielectric particles each including the secondary phase in a cross section of the dielectric composition is 30-80%.5. The dielectric composition according to claim 1 , whereinthe dielectric particles include large particles having a circle equivalent diameter of 0.5 μm or more and small particles having a circle equivalent diameter of less than 0.5 μm, andthe secondary phase exists inside the main phase of the large particles.6. The dielectric composition according to claim 5 , wherein a ratio of an area occupied by the large particles each including the secondary phase to an area occupied by the large particles in a cross section of the dielectric composition is 50% or more.7. The dielectric composition according to claim 5 , wherein a ratio of an area occupied by the large particles in a cross section of the dielectric composition is 50-90%.8. The dielectric composition according to claim 6 , wherein a ratio of the area occupied by the large particles in the cross section of the dielectric composition is ...

MULTILAYER CERAMIC CAPACITOR

A multilayer ceramic capacitor that includes a ceramic body including a stack of a plurality of dielectric layers and a plurality of first and second internal electrodes; and first and second external electrodes provided at each of both end faces of the ceramic body. Each of the plurality of dielectric layers contain Ba, Ti, P and Si. The plurality of dielectric layers include an outer dielectric layer located on an outermost side in the stacking direction; an inner dielectric layer located between the first and second internal electrodes; and a side margin portion in a region where the first and second internal electrodes do not exist. In at least one of the outer dielectric layer, the inner dielectric layer and the side margin portion, the P and the Si segregate in at least one of grain-boundary triple points of three ceramic particles. 1. A multilayer ceramic capacitor comprising: a first main surface and a second main surface that face each other in a stacking direction,', 'a first side surface and a second side surface that face each other in a width direction orthogonal to the stacking direction, and', 'a first end face and a second end face that face each other in a length direction orthogonal to the stacking direction and the width direction;, 'a ceramic body including a stack of a plurality of dielectric layers and a plurality of first and second internal electrodes, the ceramic body having'}a first external electrode electrically connected to each of the first internal electrodes at the first end face of the ceramic body; anda second external electrode electrically connected to each of the second internal electrodes at the second end face of the ceramic body, wherein an outer dielectric layer located on an outermost side of the ceramic body in the stacking direction,', 'an inner dielectric layer located between the first and second internal electrodes adjacent to each other in the stacking direction, and', 'a side margin portion in a region where the first ...

ELECTRONIC COMPONENT AND METHOD FOR MANUFACTURING THE SAME

A method for manufacturing an electronic component includes preparing a rectangular or substantially rectangular parallelepiped multilayer body made of dielectric ceramic containing Ti and Ba. The multilayer body includes inner electrodes embedded therein, a pair of opposite end surfaces, and four side surfaces connecting the end surfaces to each other. The method further includes forming an oleophobic coating film containing BaF on the surface of the multilayer body, and immersing the end surfaces of the multilayer body having the coating film formed thereon into a conductive paste having a viscosity of about 15 Pa·s or less. 1. An electronic component comprising:a rectangular or substantially rectangular parallelepiped multilayer body made of dielectric ceramic containing Ti and Ba, the multilayer body including inner electrodes embedded therein, a pair of opposite end surfaces, and four side surfaces connecting the end surfaces to each other; andtwo outer electrodes provided on the pair of end surfaces, respectively, and electrically connected to the inner electrodes; whereinat least a portion of an exposed portion of each of the four side surfaces between the outer electrodes is covered with BaF.2. The electronic component according to claim 1 , wherein an entirety of the exposed portion of each of the four side surfaces between the outer electrodes is covered with the BaF.3. The electronic component according to claim 1 , wherein the at least the portion of the exposed portion is covered with a coating film that is made of a polymer in which monomers of CF claim 1 , CF claim 1 , CF claim 1 , and the BaF are polymerized.4. The electronic component according to claim 3 , wherein the BaF is detected as BaF by time-of-flight secondary ion mass spectrometry.5. The electronic component according to claim 4 , wherein{'sup': +', '+', '+, 'sub': 2', '2', '3', '3, 'the CF is detected as CF, the CFis detected as CF, and the CFis detected as CF by the time-of-flight ...

Dielectric Ceramic Composition, Method for the Production and Use Thereof

A dielectric ceramic composition, a method for producing a dieelctric composition and the use of the dielectric composition are disclosed. In an embodiment a ceramic composition includes a main component with a quantity ratio Mg(1+x)(1−y)O3+xA(1+x)ySi(1−z)Dz and a remainder comprising contaminants, wherein 0.01×0.30, wherein 0.00≤y≤0.20, and wherein 0.00≤z≤1.00.

CAPACITOR COMPONENT

A capacitor component includes a body including dielectric layers, first and second internal electrodes, laminated in a first direction, facing each other, and first and second cover portions, disposed on outermost portions of the first and second internal electrodes, and first and second external electrodes, respectively disposed on both external surfaces of the body in a second direction, perpendicular to the first direction, and respectively connected to the first and second internal electrodes. An indentation including a glass is disposed at at least one of boundaries between the first internal electrodes and the first external electrode or one of boundaries between the second internal electrodes and the second external electrode. 1. A capacitor component comprising:a body including dielectric layers, first and second internal electrodes, laminated in a first direction, facing each other, and first and second cover portions, disposed on outermost portions of the first and second internal electrodes; andfirst and second external electrodes, respectively disposed on both external surfaces of the body in a second direction, perpendicular to the first direction, and respectively connected to the first and second internal electrodes,wherein an indentation including a glass is disposed at at least one of boundaries between the first internal electrodes and the first external electrode or one of boundaries between the second internal electrodes and the second external electrode.2. The capacitor component of claim 1 , wherein the indentation is disposed at outermost boundaries of the body in the first direction claim 1 , among the boundaries between the first internal electrodes and the first external electrode and the boundaries between the second internal electrodes and the second external electrode.3. The capacitor component of claim 1 , wherein the indentation is disposed at each of boundaries between the first internal electrodes and the first external electrode ...

CERAMIC ELECTRONIC DEVICE AND MANUFACTURING METHOD OF THE SAME

A ceramic electronic device includes: a multilayer structure; and a cover layer, wherein a concentration of Mn of the cover layer with respect to a main component ceramic is larger than a concentration of Mn of the dielectric layers with respect to a main component ceramic in a capacity section, wherein an average crystal grain diameter of a first dielectric layer is smaller than that of a second dielectric layer, and a concentration of Mn of the first dielectric layer with respect to the main component ceramic is larger than a concentration of Mn of the second dielectric layer with respect to the main component ceramic, in the capacity section. 1. A ceramic electronic device comprising:a multilayer structure in which each of a plurality of dielectric layers and each of a plurality of internal electrode layers are alternately stacked, a main component of the dielectric layers being ceramic, the multilayer structure having a rectangular parallelepiped shape, the plurality of internal electrode layers being alternately exposed to a first edge face and a second edge face of the multilayer structure, the first edge face facing with the second edge face; anda cover layer that is provided at least on an upper face and a lower face of the multilayer structure in a stacking direction of the multilayer structure, a main component of the cover layer being ceramic,wherein a concentration of Mn of the cover layer with respect to a main component ceramic of the cover layer is larger than a concentration of Mn of the dielectric layers with respect to a main component ceramic of the dielectric layers in a capacity section in which a set of internal electrode layers exposed to the first edge face of the multilayer structure face with another set of internal electrode layers exposed to the second edge face of the multilayer structure,wherein an average crystal grain diameter of a first dielectric layer is smaller than that of a second dielectric layer, and a concentration of Mn of ...

DIELECTRIC COMPOSITION AND MULTI-LAYERED CERAMIC CAPACITOR

A dielectric composition may include a first dielectric powder; and a second dielectric powder having an average grain size smaller than that of the first dielectric powder and included in the dielectric composition in an amount of 0.01 to 1.5 parts by weight based on 100 parts by weight of the first dielectric powder, and a multilayer ceramic capacitor formed using the same. A multilayer ceramic capacitor may include: a ceramic body including dielectric layers; first and second internal electrodes disposed in the ceramic body to face each other with the respective dielectric layers interposed therebetween; and first and second external electrodes electrically connected to the first and second internal electrodes, respectively. The dielectric layers are formed of a dielectric composition including a first dielectric powder and a second dielectric powder having an average grain size smaller than that of the first dielectric powder and included in the dielectric composition in an amount of 0.01 to 1.5 parts by weight based on 100 parts by weight of the first dielectric powder. 1. A dielectric composition comprising:a first dielectric powder; anda second dielectric powder having an average grain size smaller than that of the first dielectric powder and included in the dielectric composition in an amount of 0.01 to 1.5 parts by weight based on 100 parts by weight of the first dielectric powder.2. The dielectric composition of claim 1 , wherein when the average grain size of the first dielectric powder is defined as a and the average grain size of the second dielectric powder is defined as b claim 1 , b/a≦ 1/10 is satisfied.3. The dielectric composition of claim 1 , further comprising: a first accessory component containing at least one selected from a group consisting of manganese (Mn) claim 1 , vanadium (V) claim 1 , chromium (Cr) claim 1 , iron (Fe) claim 1 , nickel (Ni) claim 1 , cobalt (Co) claim 1 , copper (Cu) claim 1 , and zinc (Zn).4. The dielectric composition ...

BARIUM TITANATE FOAM CERAMIC/THERMOSETTING RESIN COMPOSITES AND PREPARATION METHOD THEREOF

Disclosed are a barium titanate foam ceramic/thermosetting resin composite material and a preparation method therefor. An organic additive is used as an auxiliary; deionized water is used as a solvent; nanometer barium titanate is used as a ceramic raw material; and all of same are mixed and ground so as to form a slurry with a certain solid content. A pre-treated polymer sponge is impregnated into the slurry for slurry coating treatment, and then redundant slurry is removed and the polymer sponge is dried so as to obtain a barium titanate foam ceramic blank, and same is then sintered so as to obtain a barium titanate foam ceramic. A resin, being in a molten state and thermosettable, submerges the pores of the barium titanate foam ceramic, and a barium titanate foam ceramic/thermosetting resin composite material is obtained after a thermosetting treatment. 1. A preparation method of barium titanate foam ceramic/thermosetting resin composites , wherein comprising the following steps:(1) by weight, 100 parts of nano barium titanate and 30 to 120 parts of an aqueous solution of organic binder with a concentration of 1 to 15 wt % are sufficiently ground to obtain a slurry A; 10 to 80 parts of an aqueous solution of organic rheological agent with a concentration of 0.5 to 3 wt % are added into the slurry A, and the mixture is sufficiently ground to obtain a slurry B; 20 to 80 parts of an aqueous solution of organic dispersant with a concentration of 0.5 to 3 wt % are added into the slurry B, and the mixture is sufficiently ground to obtain a slurry C; said organic binder is one or more selected from polyvinyl alcohol, carboxymethyl cellulose and methyl cellulose; said organic rheological agent is one or more selected from carboxymethyl cellulose and hydroxyhexyl cellulose; said organic dispersant is one or more selected from polyacrylamide, polyethyleneimine and polyacrylic acid amine;(2) a polymer sponge having a specification of 15 to 35 PPI is soaked in an aqueous ...

DIELECTRIC CERAMIC AND MULTILAYER CERAMIC CAPACITOR

A dielectric ceramic that contains Al and Si, as well as a barium titanate-based compound having a perovskite type crystal structure as a primary component. The total molar amount of Al and Si is 2 to 4 parts by mole with respect to 100 parts by mole of Ti, and the content ratio of Al with respect to the total molar amount is 0.2 or less (excluding 0) on the molar ratio basis. The dielectric ceramic may also contain at least one specific rare earth element Re, such as Gd, Tb, or Dy.

Manufacturing method of ceramic powder

A manufacturing method of ceramic powder includes mixing a barium carbonate having a specific surface are of 15 m2/g or more, a titanium dioxide having a specific surface area of 20 m2/g or more, a first compound of a donor element having a larger valence than Ti, and a second compound of an acceptor element having a smaller valence than Ti and having a larger ion radium than Ti and the donor element, and synthesizing barium titanate powder by calcining the barium carbonate, the titanium dioxide, the first compound and the second compound until a specific surface area of the barium titanate powder becomes 4 m2/g or more and 25 m2/g or less.

MULTILAYER CERAMIC CAPACITOR

A multilayer ceramic capacitor includes a multilayer body including an inner layer section extending from an inner electrode positioned closest to a first principal surface of the multilayer body to an inner electrode positioned closest to a second principal surface of the multilayer body, and first and second principal surface-side outer layer sections positioned outside the inner layer section on the sides closer to the first and second principal surfaces, respectively. Sn is dissolved in a solid state in Ni of only the inner electrodes contacting the first and second principal surface-side outer layer sections, and a Sn content is not less than about 0.1 mol and not more than about 8.5 mol where a total of Ni and Sn in each of the inner electrodes contacting the first and second principal surface-side outer layer sections is 100 mol. 1. A multilayer ceramic capacitor comprising:a multilayer body including a plurality of laminated dielectric layers, a first principal surface and a second principal surface opposing to each other in a lamination direction, a first lateral surface and a second lateral surface opposing to each other in a width direction perpendicular or substantially perpendicular to the lamination direction, and a first end surface and a second end surface opposing to each other in a length direction perpendicular or substantially perpendicular to the lamination direction and the width direction;first inner electrodes and second inner electrodes alternately laminated with the dielectric layers each interposed therebetween, and exposed respectively at the first end surface and the second end surface; anda first outer electrode connected to the first inner electrodes and disposed on the first end surface, and a second outer electrode connected to the second inner electrodes and disposed on the second end surface; wherein an inner layer section extending from the first inner electrode or the second inner electrode positioned closest to the first ...

MULTILAYER CERAMIC CAPACITOR AND MANUFACTURING METHOD FOR SAME

A multilayer ceramic capacitor () has a laminate body () constituted by dielectric layers () and internal electrode layers () stacked alternately. The dielectric layers () contain (BaCaSr)(TiZr)O, where 0.03≤x≤0.16, 0≤y≤0.02, 0 Подробнее

MULTILAYERED CAPACITOR AND BOARD HAVING THE SAME MOUNTED THEREON

A multilayer capacitor includes: a capacitor body including first and second internal electrodes alternately stacked with a dielectric layer interposed therebetween, and having first to six surfaces, the first internal electrode being exposed through the third, fifth, and sixth surfaces, the second internal electrode being exposed through the fourth, fifth, and sixth surfaces; first and second side portions disposed on the fifth and sixth surfaces of the capacitor body; and first and second external electrodes. The capacitor body includes upper and lower cover portions disposed on an upper surface of an uppermost internal electrode and a lower surfaces of a lowermost internal electrode, respectively, in a stacking direction of the first and second internal electrodes. The first and second side portions and the upper and lower cover portions include zirconium (Zr). 1. A multilayer capacitor , comprising:a capacitor body including first and second internal electrodes alternately stacked with a dielectric layer interposed therebetween, the capacitor body having first and second surfaces opposing each other, third and fourth surfaces connected to the first and second surfaces and opposing each other, and fifth and sixth surfaces connected to the first and second surfaces, connected to the third and fourth surfaces, and opposing each other, the first internal electrode being exposed through the third, fifth, and sixth surfaces, the second internal electrode being exposed through the fourth, fifth, and sixth surfaces;first and second side portions disposed on the fifth and sixth surfaces of the capacitor body, respectively; andfirst and second external electrodes disposed on the third and fourth surfaces of the capacitor body, respectively, and connected to the first and second internal electrodes, respectively,wherein the capacitor body includes upper and lower cover portions disposed on an upper surface of an uppermost internal electrode and a lower surfaces of a ...

MULTILAYER TYPE ELECTRONIC COMPONENT

A multilayer electronic component having a plurality of laminated dielectric layers and inner electrode layers. The dielectric layers have a plurality of crystal grains including first regions where Re is dissolved in a solid state; and second regions where Re is not dissolved in the solid state. A median size of the crystal grains to an average thickness of the dielectric layers is 0.5≤t≤0.7. A ratio of a sum of cross sectional areas of the first regions to those of the plurality of crystal grains is 0.7≤s≤0.9. When a total amount of Ti, Zr, and Hf is 100 molar parts in the dielectric layers, a sum of the Zr and the Hf is 0≤a≤1.0; an amount b of Si is 0.1≤b≤1.0; an amount c of Re is 0.5≤c≤10.0; and a ratio m of a total of Ba and Re to a total of Ti, Zr, and Hf is 0.990≤m≤1.050. 1. A multilayer electronic component comprising:a multilayer body including a plurality of laminated dielectric layers and a plurality of inner electrode layers alternately arranged between adjacent dielectric layers of the plurality of laminated dielectric layers, whereineach of the plurality of laminated dielectric layers includes elements Ba, Ti, Zr, Hf, Si, and Re, and Re is at least one element selected from Gd, Dy, Ho, Er, and Y,an average thickness of each of the plurality of laminated dielectric layers is less than or equal to 0.5 μm,each of the plurality of laminated dielectric layer has a plurality of crystal grains with first regions and second regions, each of the first regions having the Re dissolved in a solid state, and each of the second regions not having the Re dissolved in the solid state,a ratio t of a median size of the plurality of crystal grains to the average thickness of the dielectric layer is 0.5≤t≤0.7,in a cross section along a thickness direction of the plurality of laminated dielectric layers, a ratio s of a sum of cross sectional areas of the first regions to a sum of cross sectional areas of the plurality of crystal grains is 0.7≤s≤0.9,where each of amounts of ...

MULTILAYER ELECTRONIC COMPONENT AND METHOD FOR MANUFACTURING MULTILAYER ELECTRONIC COMPONENT

A multilayer electronic component includes a multilayer body including dielectric layers and inner electrode layers. Each of the dielectric layers includes first crystal grains defining and functioning as plate-shaped objects that have an average thickness of less than or equal to about 300 nm and an average aspect ratio of more than or equal to about 5, each of the inner electrode layers includes second crystal grains defining and functioning as plate-shaped objects that have an average thickness of less than or equal to about 150 nm and an average aspect ratio of more than or equal to about 5, where an aspect ratio is represented by a ratio of a major axis of each plate-shaped object to a thickness of the plate-shaped object with the major axis of the plate-shaped object being orthogonal or substantially orthogonal to a thickness direction of the plate-shaped object. 1. A multilayer electronic component comprising:a multilayer body including a plurality of laminated dielectric layers and a plurality of inner electrode layers; whereineach of the plurality of dielectric layers includes a plurality of first crystal grains defining and functioning as plate-shaped objects that have an average thickness of less than or equal to about 300 nm and an average aspect ratio of more than or equal to about 5; and each of the plurality of inner electrode layers includes a plurality of second crystal grains defining and functioning as plate-shaped objects that have an average thickness of less than or equal to about 150 nm and an average aspect ratio of more than or equal to about 5, where the aspect ratio is represented by a ratio of a major axis of each of the plate-shaped objects to a thickness of each of the plate-shaped objects, the major axis of the plate-shaped objects being orthogonal or substantially orthogonal to a thickness direction of the plate-shaped objects.2. The multilayer electronic component according to claim 1 , wherein each of the plurality of dielectric ...

Method of preparing ceramic powders

A method of forming composition-modified barium titanate ceramic particulate includes mixing a plurality of precursor materials and a precipitant solution to form an aqueous suspension. The plurality of precursors include barium nitrate, titanium chelate, and a metal or oxometal chelate. The precipitant solution includes tetraalkylammonium hydroxide and tetraalkylammonium oxalate. The method further includes treating the aqueous suspension at a temperature of at least 150° C. and a pressure of at least 200 psi, and separating particulate from the aqueous suspension after treating.

DIELECTRIC COMPOSITION FOR LOW-TEMPERATURE SINTERING, MULTILAYER CERAMIC ELECTRONIC COMPONENT INCLUDING THE SAME, AND METHOD OF MANUFACTURING MULTILAYER CERAMIC ELECTRONIC COMPONENT

There is provided a dielectric composition for low-temperature sintering including BaTiOas a main ingredient, and xBO-(1-x)BaOas an accessory ingredient, wherein x ranges from 0.25 to 0.8, and the content of the accessory ingredient ranges from 0.1 to 2.00 mol %, based on 100 mol % of the main ingredient. 1. A dielectric composition for low-temperature sintering , the dielectric composition comprising:{'sub': '3', 'BaTiOas a main ingredient; and'}{'sub': 2', '3, 'xBO-(1-x)BaO as an accessory ingredient,'}wherein x ranges from 0.25 to 0.8, and the content of the accessory ingredient ranges from 0.1 to 2.00 mol %, based on 100 mol % of the main ingredient.2. The dielectric composition of claim 1 , further comprising:3.5 mol % of BaO;{'sub': '2', '3.2 mol % of SiO; and'}{'sub': 2', '3, '1.0 mol % of AlO, as first auxiliary ingredients, based on 100 mol % of the main ingredient.'}3. The dielectric composition of claim 1 , further comprising:{'sub': 2', '3, '1.5 mol % of YO;'}{'sub': 3', '4, '1.0 mol % of MnO;'}{'sub': '2', '5.0 mol % of ZrO; and'}{'sub': 2', '5, '1.25 mol % of VO, as second auxiliary ingredients, based on 100 mol % of the main ingredient.'}4. A multilayer ceramic electronic component comprising:{'sub': 3', '2', '3, 'a multilayer body formed by stacking a plurality of dielectric layers containing BaTiOas a main ingredient and xBO-(1-x)BaO as an accessory ingredient;'}first and second internal electrodes formed on upper surfaces of the dielectric layers to be alternately exposed to both end surfaces of the multilayer body;a first external electrode formed on one end surface of the multilayer body to thereby be electrically connected to the first internal electrode; anda second external electrode formed on a surface opposing the surface on which the first external electrode is formed to thereby be electrically connected to the second internal electrode,wherein x ranges from 0.25 to 0.8, and the content of the accessory ingredient ranges from 0.1 to 2.00 ...

MULTILAYER CERAMIC CAPACITOR AND MANUFACTURING METHOD THEREOF

A multilayer ceramic capacitor includes: a multilayer structure in which each of a plurality of dielectric layers and each of a plurality of internal electrode layers are alternately stacked, the plurality of internal electrode layers being alternately exposed to a first edge face and a second edge face of the multilayer structure; and a cover layer that is provided at least on an upper face and a lower face of the multilayer structure, a main component of the cover layer being a same as that of the dielectric layers, wherein: a concentration of a donor element with respect to a main component ceramic of at least one of the cover layer, an end margin region and a side margin region is lower than a concentration of the donor element with respect to a main component ceramic of the dielectric layers in the multilayer structure. 1. A multilayer ceramic capacitor comprising:a multilayer structure in which each of a plurality of dielectric layers and each of a plurality of internal electrode layers are alternately stacked, a main component of the dielectric layers being ceramic, the multilayer structure having a rectangular parallelepiped shape, the plurality of internal electrode layers being alternately exposed to a first edge face and a second edge face of the multilayer structure, the first edge face facing with the second edge face; anda cover layer that is provided at least on an upper face and a lower face of the multilayer structure in a stacking direction of the multilayer structure, a main component of the cover layer being a same as that of the dielectric layers,wherein:a concentration of a donor element with respect to a main component ceramic of at least one of the cover layer, an end margin region and a side margin region is lower than a concentration of the donor element with respect to a main component ceramic of the dielectric layers in the multilayer structure;the end margin region is a region in which internal electrode layers coupled to the first edge ...

MULTILAYER CERAMIC CAPACITOR

A multilayer ceramic capacitor includes a laminate including dielectric layers and internal electrodes that are laminated, and external electrodes disposed on side surfaces of the laminate to be connected to corresponding internal electrodes. A dimension L of the multilayer ceramic capacitor in its lengthwise direction and a dimension W in its width direction satisfy: about 0.85≤W/L≤about 1, and L≤about 750 μm, and a dimension T in its lamination direction satisfies: about 70 μm≤T≤about 110 μm. The laminate has a dimension t in the lamination direction, and a region in which the internal electrodes are laminated has a dimension t′ in the lamination direction, and a ratio of the dimensions satisfies: t′/t≥about 0.55. 1. A multilayer ceramic capacitor comprising: a plurality of dielectric layers and a plurality of internal electrodes that are laminated;', 'a first main surface and a second main surface, facing each other in a lamination direction;', 'a first side surface and a second side surface, facing each other in a lengthwise direction orthogonal or substantially orthogonal to the lamination direction; and', 'a third side surface and a fourth side surface, being orthogonal to each other in a width direction orthogonal or substantially orthogonal to the lamination direction and the lengthwise direction; and, 'a laminate includinga plurality of external electrodes disposed on corresponding side surfaces of the first, second, third, and fourth side surfaces of the laminate; wherein a plurality of first internal electrodes and a plurality of second internal electrodes alternately laminated with the plurality of dielectric layers interposed therebetween;', 'the plurality of first internal electrodes each including a first extended portion that extends to one of the first side surface, the second side surface, the third side surface, and the fourth side surface, and a second extended portion that extends to another one of the first side surface, the second side surface ...

MULTILAYER CAPACITOR

A multilayer capacitor may include a capacitor body including an active area including a plurality of dielectric layers, and a plurality of first and second internal electrodes, upper and lower cover layers disposed on upper and lower surfaces of the active area, and having first to six external surfaces; first and second external electrodes including first and second connection portions and first and second band portions, respectively; and a plurality of dummy electrodes disposed on the upper and lower cover layers with a dielectric layer interposed therebetween, and exposed through corners of the capacitor body, a portion of the plurality of dummy electrodes being disposed between the upper and lower surfaces of the capacitor body and the first and second band portions. 1. A multilayer capacitor comprising:a capacitor body including an active area including a plurality of dielectric layers and a plurality of first and second internal electrodes alternately disposed with the dielectric layer interposed therebetween, upper and lower cover layers disposed on upper and lower surfaces of the active area, and having first and second surfaces opposing each other, third and fourth surfaces connected to the first and second surfaces and opposing each other, and fifth and sixth surfaces connected to the first and second surfaces, connected to the third and fourth surfaces and opposing each other, one ends of the first and second internal electrodes being exposed through the third and fourth surfaces, respectively;first and second external electrodes including first and second connection portions disposed on the third and fourth surfaces of the capacitor body, respectively, to be connected to the first and second internal electrodes, respectively, and first and second band portions each extending from the first and second connection portions to portions of the first, second, fifth, and sixth surfaces of the capacitor body, respectively; anda plurality of dummy electrodes ...

MULTILAYER CERAMIC CAPACITOR

A multilayer ceramic electronic component includes a ceramic body comprising dielectric layers and first and second internal electrodes laminatedly disposed in a third direction with respective dielectric layers interposed therebetween, and first electrode and second external electrodes disposed on both surfaces of the ceramic body in the first direction and electrically connected to the first and second internal electrodes. When an absolute value of a horizontal angle in the second direction of the first internal electrode with respect to the first surface of the ceramic body is referred to a first angle of the internal electrode, a total sum of the first angles is less than 10°. 1. A multilayer ceramic capacitor , comprising:a ceramic body comprising dielectric layers and first and second internal electrodes laminatedly disposed in a third direction with respective dielectric layers interposed therebetween, and first and second surfaces opposing each other in a direction in which the first and second internal electrodes are laminated, third and fourth surfaces connected to the first and second surfaces and opposing each other in a first direction, and fifth and sixth surfaces connected to the first and second surfaces and the third and fourth surfaces and opposing each other in a second direction; andfirst electrode and second external electrodes disposed on both surfaces of the ceramic body in the first direction, the first and second external electrodes being electrically connected to the first and second internal electrodes,wherein, when an absolute value of a horizontal angle in the second direction of the first internal electrode with respect to the first surface of the ceramic body is referred to as a first angle of the internal electrode, a total sum of the first angles is less than 10°.2. The multilayer ceramic capacitor of claim 1 , wherein the total sum of the first angles exceeds 0°.3. The multilayer ceramic capacitor of claim 1 , wherein a maximum ...

Dielectric ceramic composition and multilayer ceramic capacitor comprising the same

A dielectric ceramic composition includes a barium titanate (BaTiO3)-based base material main ingredient and an accessory ingredient, the accessory ingredient including dysprosium (Dy) and praseodymium (Pr) as first accessory ingredients. A content of the Pr satisfies 0.233 mol≤Pr≤0.699 mol, based on 100 mol of the barium titanate base material main ingredient.

ELECTRONIC MODULE

The electronic module including a metal base, a ceramic substrate, and a die-capacitor is disclosed. The ceramic substrate is mounted on the metal base via eutectic solder. The ceramic substrate includes a main substrate having a back surface facing the metal base and a front surface opposite to the back surface, and a back metal layer placed on the back surface of the main substrate and joined to the eutectic solder. The die-capacitor is mounted on the front surface of the ceramic substrate along one edge of the ceramic substrate. The back surface of the ceramic substrate is provided with an exposure region where the back metal layer is not provided. The exposure region includes a main region corresponding to an outer shape of the die-capacitor spreading along the front surface and an edge region extending from the main region to the one edge of the ceramic substrate. 1. An electronic module comprising:a metal base;at least one ceramic substrate mounted on the metal base via eutectic solder, the ceramic substrate including a main substrate having a back surface facing the metal base and a front surface opposite to the back surface, and a back metal layer placed on the back surface of the main substrate and joined to the eutectic solder, anda die-capacitor mounted on the front surface of the ceramic substrate along one edge of the ceramic substrate,wherein the back surface of the ceramic substrate is provided with an exposure region where the back metal layer is not provided, and the exposure region includes a main region corresponding to an outer shape of the die-capacitor spreading along the front surface and an edge region extending from the main region to the one edge of the ceramic substrate.2. The electronic module according to claim 1 , wherein the metal base includes at least one of a copper layer and a molybdenum layer.3. The electronic module according to claim 1 , wherein the metal base includes a first copper layer claim 1 , a molybdenum layer placed on ...

CERAMIC ELECTRONIC COMPONENT AND METHOD OF PRODUCING A CERAMIC ELECTRONIC COMPONENT

A ceramic electronic component includes: a ceramic body that includes internal electrodes; and an external electrode that includes a plurality of crystal particles containing Ba, Zn, Si, and O, the external electrode being formed on a surface of the ceramic body and connected to the internal electrodes. 1. A ceramic electronic component , comprising:a ceramic body that includes internal electrodes; andan external electrode that includes a plurality of crystal particles containing Ba, Zn, Si, and O, the external electrode being formed on a surface of the ceramic body and connected to the internal electrodes.2. The ceramic electronic component according to claim 1 , whereinthe plurality of crystal particles comprise a rod-like crystal particle.3. The ceramic electronic component according to claim 1 , whereinif the external electrode is divided into a surface region within a half depth of a thickness of the external electrode from a surface of the external electrode, and an internal region adjacent between the surface region and the ceramic body, the plurality of crystal particles are more distributed in the surface region than in the internal region.4. The ceramic electronic component according to claim 1 , wherein each of the plurality of crystal particles has a length of 20 μm or less in a longitudinal direction.5. The ceramic electronic component according to claim 1 , whereinthe external electrode comprises copper.6. A method of producing a ceramic electronic component claim 1 , comprising:forming a ceramic body including internal electrodes;applying an electrode material containing Ba, Zn, and Si to a surface of the ceramic body; anddepositing crystal particles containing Ba, Zn, Si, and O by baking the electrode material under a humidified atmosphere, and forming an external electrode that is connected to the internal electrodes.7. The method of producing a ceramic electronic component according to claim 6 , whereinthe electrode material comprises flaky metal ...

Multilayer ceramic capacitor

A multilayer ceramic capacitor includes a laminate constituted by internal electrode layers of different polarities alternately layered via dielectric layers, wherein the multilayer ceramic capacitor is such that the dielectric layers contain ceramic grains whose primary component is BaTiO 3 , the ceramic grains contain Mo, Mn, rare earth R, and at least one of V and W, and the average valence number of Mo in the ceramic grains is 4.50 to 5.50. The multilayer ceramic capacitor can offer excellent service life characteristics and sufficiently suppress leak current even when the thickness of the dielectric layer is 0.8 μm or less.

MULTILAYER CERAMIC CAPACITOR

A multilayer ceramic capacitor includes a laminate constituted by internal electrode layers of different polarities alternately stacked via dielectric layers, wherein the multilayer ceramic capacitor is such that the dielectric layers contain ceramic grains whose primary component is BaTiO, the ceramic grains contain Mo, Mn, and rare earth R, and the average valence number of Mo in the ceramic grains is 4.18 to 4.60. The multilayer ceramic capacitor can offer excellent service life characteristics and bias characteristics even when the thickness of the dielectric layer is 0.8 μm or less. 1. A multilayer ceramic capacitor , comprising:a laminate constituted by internal electrode layers of different polarities alternately stacked via dielectric layers, wherein;{'sub': '3', 'the dielectric layers contain ceramic grains whose primary component is BaTiO;'}the ceramic grains contain Mo, Mn and rare earth R; andan average valence number of Mo in the ceramic grains is 4.18 to 4.60.2. A multilayer ceramic capacitor according to claim 1 , wherein an amount of Mo in the dielectric layer is 0.1 to 0.3 mol per 100 mol of BaTiO.3. A multilayer ceramic capacitor according to claim 1 , wherein an amount of Mn in the dielectric layer is 0.03 to 0.28 mol per 100 mol of BaTiO.4. A multilayer ceramic capacitor according to claim 2 , wherein an amount of Mn in the dielectric layer is 0.03 to 0.28 mol per 100 mol of BaTiO.5. A multilayer ceramic capacitor according to claim 1 , wherein an amount of rare earth R in the dielectric layer is 0.5 to 1.8 mol per 100 mol of BaTiO.6. A multilayer ceramic capacitor according to claim 2 , wherein an amount of rare earth R in the dielectric layer is 0.5 to 1.8 mol per 100 mol of BaTiO.7. A multilayer ceramic capacitor according to claim 3 , wherein an amount of rare earth R in the dielectric layer is 0.5 to 1.8 mol per 100 mol of BaTiO.8. A multilayer ceramic capacitor according to claim 4 , wherein an amount of rare earth R in the dielectric layer ...

COMPOSITE OXIDE-COATED METAL POWDER, PRODUCTION METHOD THEREFOR, CONDUCTIVE PASTE USING COMPOSITE OXIDE-COATED METAL POWDER, AND MULTILAYER CERAMIC ELECTRONIC COMPONENT

A method for producing a composite oxide-coated metal powder that includes a first step of coating a metal powder with a metal oxide by a hydrolysis reaction of a water-soluble metal compound in an aqueous solvent, and a second step of turning the metal oxide into a composite oxide. In the first step, the water-soluble metal compound containing a tetravalent metal element dissolved in a solvent including at least water is added to a slurry including the metal powder dispersed in the solvent to deposit the metal oxide containing the tetravalent metal element and produce a metal oxide-coated metal powder slurry. In the second step, a solution or powder containing at least one divalent element is added to the metal oxide-coated metal powder slurry to react the metal oxide present on the surface of the metal powder with the divalent element, thereby providing the composite oxide-coated metal powder. 1. A method for producing a composite oxide-coated metal powder , the method comprising:adding a water-soluble metal compound containing a tetravalent metal element to a first slurry including a metal powder having a metal element dispersed in a solvent including at least water so as to deposit a metal oxide containing the tetravalent metal element at least partially on a surface of the metal powder thereby providing a second slurry containing a metal oxide-coated metal powder; andadding a solution or a powder containing at least one divalent element to the second slurry to react the metal oxide on the surface of the metal powder with the divalent element so as to produce the composite oxide-coated metal powder.2. The method for producing a composite oxide-coated metal powder according to claim 1 , wherein the metal powder has a ratio of the metal element in a hydroxide state within a range of 30% to 100% claim 1 , the ratio being obtained by peak separation of the metal element in a metal state claim 1 , the metal element in an oxide state claim 1 , and the metal element in ...

MULTI-LAYER CERAMIC CAPACITOR

A multi-layer ceramic capacitor has a structure where its dielectric layers are constituted by a sintered compact that contains a mol of ReO, b mol of SiO, c mol of MO, d mol of ZrO, and e mol of MgO (where Re is a rare earth element, M is a metal element (except for Ba, Ti, Re, Si, Zr, Mg, and rare earth elements), and x is a valance) per 100 mol of BaTiO, and a, b, c, d, and e mentioned above which indicate the mol numbers of respective constituents per 100 mol of BaTiOare 0.1≦a≦1.0, 0.1≦b≦1.5, 0.1≦c≦0.4, 0≦d≦1.0, and 0≦e≦0.03, respectively.

ELECTRONIC COMPONENT

An electronic component includes: a body containing a ceramic material; and an indication part formed on a surface of the body and including a base region and a marking region formed of a non-conductive paste on a portion of the base region. 1. An electronic component comprising:a body containing a ceramic material; andan indication part formed on a surface of the body and including a base region and a marking region formed of a non-conductive paste on a portion of the base region.2. The electronic component of claim 1 , wherein the ceramic material comprises at least one selected from the group consisting of a BaTiObased ceramic material claim 1 , a BaTiObased ceramic material claim 1 , a BaTiO—SrTiObased ceramic material claim 1 , a BaTiO—PbTiObased ceramic material claim 1 , a BaTiO—CaTiObased ceramic material claim 1 , a BaTiO—YTiObased ceramic material claim 1 , a BaTiO—BaSnObased ceramic material claim 1 , a BaTiO—BaZrObased ceramic material claim 1 , and a PbTiO—PbZrObased ceramic material.3. The electronic component of claim 1 , wherein the body includes a plurality of coil patterns and electrode patterns claim 1 , and has a structure in which the plurality of coil patterns and electrode patterns are stacked.4. The electronic component of claim 1 , wherein the body contains a plurality of stacked and sintered ceramic sheets on which the coil pattern is printed and a plurality of stacked and sintered ceramic sheets on which the electrode pattern is printed.5. The electronic component of claim 4 , wherein the body further contains glass.6. The electronic component of claim 1 , wherein the marking region has a color darker than that of the base region.7. The electronic component of claim 1 , wherein the marking region has a black color.8. The electronic component of claim 1 , wherein the non-conductive paste contains a powder comprising one or more selected from the group consisting of (Co claim 1 ,Fe claim 1 ,Mn) (Fe claim 1 ,Mn)O claim 1 , (Co claim 1 ,Fe ...

DIELECTRIC CERAMIC COMPOSITION, MULTILAYER CERAMIC CAPACITOR CONTAINING THE SAME, AND MANUFACTURING METHOD OF MULTILAYER CERAMIC CAPACITOR

A dielectric ceramic composition contains: a barium titanate-based powder as a main ingredient; a first accessory ingredient containing Na; a second accessory ingredient containing Ba; and a third accessory ingredient containing Si. A content of the first accessory ingredient (based on moles of Na) is 0.3 to 4.0 moles per 100 moles of the main ingredient, and a Ba/Si ratio is in a range of 0.16 to 1.44. 1. A dielectric ceramic composition comprising:a barium titanate-based powder as a main ingredient;a first accessory ingredient containing sodium (Na);a second accessory ingredient containing barium (Ba); anda third accessory ingredient containing silicon (Si),wherein a content of the first accessory ingredient (based on moles of Na) is within a range of 0.3 to 4.0 moles per 100 moles of the main ingredient, anda Ba/Si ratio is within a range of 0.16 to 1.44.2. The dielectric ceramic composition of claim 1 , wherein the first accessory ingredient is NaO or NaCO.3. The dielectric ceramic composition of claim 1 , wherein the second accessory ingredient is one or more selected from the group consisting of oxides and carbonates of Ba claim 1 , and a content of the second accessory ingredient is within a range of 0.2 to 1.80 moles per 100 moles of the main ingredient.4. The dielectric ceramic composition of claim 1 , wherein the third accessory ingredient is one or more selected from the group consisting of oxides and carbonates of Si and glass containing Si claim 1 , and a content of the third accessory ingredient is within a range of 0.5 to 4.0 moles per 100 moles of the main ingredient.5. The dielectric ceramic composition of claim 1 , further comprising a fourth accessory ingredient being one or more selected from the group consisting of oxides or carbonates of rare earth elements including yttrium (Y) claim 1 , dysprosium (Dy) claim 1 , holmium (Ho) claim 1 , lanthanum (La) claim 1 , cerium (Ce) claim 1 , neodymium (Nd) claim 1 , samarium (Sm) claim 1 , gadolinium ( ...

MULTILAYER CERAMIC ELECTRONIC COMPONENT

A multilayer ceramic electronic component includes an electronic component body including a laminate and an external electrode, and a pair of metal terminals that are joined by a joining material. The pair of metal terminals includes a terminal joint portion, an extended portion and a mounting portion. The external electrode is provided only on both end surfaces of the laminate, and includes first and second external electrodes. The first external electrode and the second external electrode each include a saddle portion with a thickness larger than the thickness of a center portion of each end surface in the periphery of the first end surface and the second end surface of the laminate, respectively. 1. A multilayer ceramic electronic component comprising: a laminate including a plurality of laminated ceramic layers and a plurality of laminated internal electrode layers, and including first and second principal surfaces that are opposed to each other, first and second lateral surfaces that are opposed to each other, and first and second end surfaces that are opposed to each other;', 'a first external electrode connected with the first end surface of the laminate; and', 'a second external electrode connected with the second end surface of the laminate;, 'an electronic component body includinga first metal terminal connected with the first external electrode; anda second metal terminal connected with the second external electrode; whereinthe first and second external electrodes are disposed on the first and second end surfaces;the first and second external electrodes include a portion having a thickness larger than a thickness of a center portion of the first and second end surfaces in peripheries of the first and second end surfaces in a planar view from a direction linking the first and second end surfaces;the first metal terminal includes a first terminal joint portion connected with the first end surface, a first extended portion connected with the first terminal ...

DIELECTRIC CERAMIC COMPOSITION AND MULTILAYER CERAMIC CAPACITOR COMPRISING THE SAME

A dielectric ceramic composition and a multilayer ceramic capacitor comprising the same are provided. The dielectric ceramic composition includes a BaTiO-based base material main ingredient and an accessory ingredient, where the accessory ingredient includes dysprosium (Dy) and cerium (Ce) as first accessory ingredients. A total content of Dy and Ce is greater than 0.25 mol % and equal to or less than 1.0 mol % based on 100 mol % of the base material main ingredient. 1. A multilayer ceramic capacitor , comprising:a ceramic body comprising dielectric layers and first and second internal electrodes disposed to face each other with respective dielectric layers interposed therebetween; anda first external electrode and a second external electrode disposed on external surfaces of the ceramic body, the first external electrode being electrically connected to the first internal electrode and the second external electrode being electrically connected to the second internal electrode,wherein the dielectric layers comprise dielectric grains comprising a dielectric ceramic composition,{'sub': '3', 'the dielectric ceramic composition comprises a barium titanate (BaTiO)-based base material main ingredient and an accessory ingredient,'}the accessory ingredient comprises dysprosium (Dy) and cerium (Ce) as first accessory ingredients,a total content of Dy and Ce is greater than 0.24 mol % and equal to or less than 1.0 mol % based on 100 mol % of the base material main ingredient,the dielectric ceramic composition comprises 0.001 mol to 0.5 mol of a third accessory ingredient based on 100 mol of the base material main ingredient, andthe third accessory ingredient comprises an oxide or carbonate comprising a fixed-valence acceptor element of magnesium (Mg).2. The multilayer ceramic capacitor of claim 1 , wherein the content of Ce satisfies 0.233 mol %≤Ce≤0.932 mol % based on 100 mol % of the base material main ingredient.3. The multilayer ceramic capacitor of claim 1 , wherein the ...

Method for fabrication of crack-free ceramic dielectric films

The invention provides a process for forming crack-free dielectric films on a substrate. The process comprises the application of a dielectric precursor layer of a thickness from about 0.3 μm to about 1.0 μm to a substrate. The deposition is followed by low temperature heat pretreatment, prepyrolysis, pyrolysis and crystallization step for each layer. The deposition, heat pretreatment, prepyrolysis, pyrolysis and crystallization are repeated until the dielectric film forms an overall thickness of from about 1.5 μm to about 20.0 μm and providing a final crystallization treatment to form a thick dielectric film. The process provides a thick crack-free dielectric film on a substrate, the dielectric forming a dense thick crack-free dielectric having an overall dielectric thickness of from about 1.5 μm to about 20.0 μm.

Multilayer ceramic capacitor and manufacturing method thereof

A multilayer ceramic capacitor includes: a multilayer structure in which each of a plurality of ceramic dielectric layers and each of a plurality of internal electrode layers are alternately stacked, the plurality of internal electrode layers being alternately exposed to a first edge face and a second edge face of the multilayer structure, wherein 1.5≤Db/Da≤10.0 is satisfied in a side margin region that covers edge portions to which the plurality of internal electrode layers extend toward two side faces other than the first edge face and the second edge face, when Da is an average grain diameter of a main component ceramic within 20 μm from an edge of the plurality of internal electrode layers in the side margin region and Db is an average grain diameter of a main component ceramic within 20 μm from a surface layer of the side margin region.

DIELECTRIC MATERIAL AND MULTILAYER CERAMIC CAPACITOR INCLUDING THE SAME

A dielectric material which satisfies X9M characteristics and ensures operations over an extended period of time at 200° C. is provided. 1. A dielectric material comprising:x molar parts of Ba, c molar parts of Si, d molar parts of Mg, e molar parts of Mn, f molar parts of V, and g molar parts of rare earth element Re (Re contains at least Y), wherein x=100(1−a)+b, 0.05 Подробнее

MULTILAYER CERAMIC CAPACITOR

Disclosed herein is a multilayer ceramic capacitor including: a ceramic body in which internal electrodes and dielectric layers are alternately stacked; a pair of external electrodes covering both end portions of the ceramic body; and a moisture resistant protective film formed on surfaces of the dielectric layers between the pair of external electrodes and having a hydrophobic functional group. 1. A multilayer ceramic capacitor comprising:a ceramic body in which internal electrodes and dielectric layers are alternately stacked;a pair of external electrodes covering both end portions of the ceramic body; anda moisture resistant protective film formed on surfaces of the dielectric layers between the pair of external electrodes and having a hydrophobic functional group.2. The multilayer ceramic capacitor according to claim 1 , wherein the moisture resistant protective film is made of a silane based compound.3. The multilayer ceramic capacitor according to claim 2 , wherein the silane based compound is formed by hydrolysis and dehydration condensation reaction of a silane coupling agent represented by the following [Chemical Formula 1]:{'br': None, 'sub': '3', 'X—Si—R\u2003\u2003[Chemical Formula 1]'}{'sub': '3', '(here, Rindicates a hydrolyzable hydrophilic functional group, and X indicates a nonhydrolyzable hydrophobic functional group).'}4. The multilayer ceramic capacitor according to claim 3 , wherein the hydrolyzable hydrophilic functional group of the silane coupling agent is an alkoxy group (R—O).5. The multilayer ceramic capacitor according to claim 3 , wherein the nonhydrolyzable hydrophobic functional group of the silane coupling agent is one or more selected from an epoxy group claim 3 , a vinyl group (CHCH—) claim 3 , an amino group (—NH) claim 3 , a methacrylic group claim 3 , and a mercapto group (SH—).6. The multilayer ceramic capacitor according to claim 3 , wherein the silane coupling agent is one or more selected from 3- ...

Multilayer ceramic capacitor

A multilayer ceramic capacitor that has alternately stacked dielectric layers containing, as their main constituent, a barium titanate based compound that has a perovskite-type crystal structure; and internal electrode layers with electrode defects. The internal electrode layers are 0.6 μm or less in thickness. The electrode defects have electrode defects containing an Al—Si based oxide mainly containing Al and Si. The number of the electrode defects containing the Al—Si based oxide is 30% or more in number ratio to the total number of electrode defects in the internal electrodes.

HIGH ENERGY DENSITY STORAGE DEVICE

A device and method for providing electrical energy storage of high specific energy density. The device contains one or more layers of high dielectric constant material, such as Barium Titanate or Hexagonal Barium Titanate, sandwiched between electrode layers made up of a variety of possible conducting materials. The device includes additional insulating layers including carbon, such as carbon formed into diamond or a diamond-like arrangement for providing between the electrodes and the dielectric layer to provide for very high breakdown voltages. The layers can be created by a variety of methods including laser deposition and assembled to form a capacitor device provides the high energy density storage. 1. A device for storing energy , comprising:a first insulating layer comprising carbon configured as an electrically insulating material having at least good heat conductivity;a dielectric layer comprising particles dispersed in an electrically insulating material, said particles having a high dielectric constant;a first conducting electrode layer;a second conducting electrode layer; anda second insulating layer comprising the carbon configured as the electrically insulating material having at least good heat conductivity, whereinsaid first and second insulating layers are provided between said first conducting electrode layer and said second conducting electrode layer.2. The device of claim 1 , wherein said particles include BaTiO.3. The device of claim 2 , wherein said particles also include AlO.4. The device of claim 2 , wherein the BaTiOof said particles is at least partially organized in a hexagonal structure.5. The device of claim 1 , wherein the carbon in the insulating layers is at least partially organized in a diamond-like structure.6. The device of claim 1 , wherein the carbon in the insulating layers is at least partially organized as diamond.7. The device of claim 1 , wherein said first insulating layer and/or said second insulating layer is about 1 ...

MULTILAYER CERAMIC CAPACITOR

A multilayer ceramic capacitor includes: a multilayer structure in which each of a plurality of ceramic dielectric layers and each of a plurality of internal electrodes are alternately stacked and are alternately exposed to two edge faces of the multilayer structure; a first external electrode that is coupled to one of the two edge faces; and a second external electrode that is coupled to the other of the two edge faces, wherein: a main component of the plurality of ceramic dielectric layers is BaTiO; the plurality of ceramic dielectric layers include a rare earth element; and an atomic concentration ratio of a total amount of Mn and V with respect to Ti in the plurality of ceramic dielectric layers is 0.035% or more and 0.120% or less. 1. A multilayer ceramic capacitor comprising:a multilayer structure in which each of a plurality of ceramic dielectric layers and each of a plurality of internal electrodes are alternately stacked and are alternately exposed to two edge faces of the multilayer structure;a first external electrode that is coupled to one of the two edge faces; anda second external electrode that is coupled to the other of the two edge faces,wherein:{'sub': '3', 'a main component of the plurality of ceramic dielectric layers is BaTiO;'}the plurality of ceramic dielectric layers include a rare earth element; andan atomic concentration ratio of a total amount of Mn and V with respect to Ti in the plurality of ceramic dielectric layers is 0.035% or more and 0.120% or less.2. The multilayer ceramic capacitor as claimed in claim 1 , wherein an atomic concentration ratio of the rare earth element with respect to Ti is 0.1% to 3.0% in the plurality of ceramic dielectric layers.3. The multilayer ceramic capacitor as claimed in claim 1 , wherein the rare earth element is at least one of Y claim 1 , Dy claim 1 , Tm claim 1 , Ho claim 1 , Tb claim 1 , Yb claim 1 , Sm claim 1 , Eu claim 1 , Gd and Er.4. The multilayer ceramic capacitor as claimed in claim 2 , ...

High dielectric constant composite materials and methods of manufacture

The present invention relates to composite materials with a high dielectric constant and high dielectric strength and to methods of producing the composite materials. The composite materials have high dielectric constants at a range of high frequencies and possess robust mechanical properties and strengths, such that they may be machined to a variety of configurations. The composite materials also have high dielectric strengths for operation in high power and high energy density systems. In one embodiment, the composite material is composed of a trimodal distribution of ceramic particles, including barium titanate, barium strontium titanate (BST), or combinations thereof and a polymer binder.

SPUTTERING TARGET, METHOD OF MANUFACTURING SPUTTERING TARGET, METHOD OF MANUFACTURING BARIUM TITANATE THIN FILM, AND METHOD OF MANUFACTURING THIN FILM CAPACITOR

A sputtering target includes a conductive barium titanate sintered material with generation density of crystal grain aggregate () having a grain diameter of 10 μm or more on a cleavage surface of less than 0.2 piece/cm. 1. A sputtering target comprising a conductive barium titanate sintered material with generation density of crystal grain aggregate having a grain diameter of 10 μm or more on a cleavage surface of less than 0.2 piece/cm.2. The sputtering target according to claim 1 , wherein manganese (Mn) is contained.3. The sputtering target according to claim 1 , wherein an oxide of manganese (Mn) is contained.4. The sputtering target according to claim 2 , wherein a content of the manganese (Mn) is equal to or lower than 0.25 atm % with respect to a total amount of barium (Ba) and titanium (Ti) that configure the barium titanate sintered material.5. The sputtering target according to claim 1 , wherein one or two or more elements selected from silicon (Si) claim 1 , aluminum (Al) claim 1 , magnesium (Mg) claim 1 , vanadium (V) claim 1 , tantalum (Ta) claim 1 , niobium (Nb) claim 1 , and chromium (Cr) are contained.6. The sputtering target according to claim 1 , wherein oxides of one or two or more elements selected from silicon (Si) claim 1 , aluminum (Al) claim 1 , magnesium (Mg) claim 1 , vanadium (V) claim 1 , tantalum (Ta) claim 1 , niobium (Nb) claim 1 , and chromium (Cr) are contained.7. The sputtering target according to claim 1 , whereinresistivity in a thickness direction is 0.1 to 10 Ω·cm, andvariation of the resistivity in the thickness direction is within ±10%.8. A method of manufacturing a sputtering target claim 1 , the method comprising:{'sub': '3', 'performing primary firing of barium titanate (BaTiO) powder in an atmosphere containing oxygen; and'}{'sub': '3', 'performing hot pressing of fired barium titanate (BaTiO) powder after the primary firing.'}9. The method of manufacturing the sputtering target according to claim 8 , wherein the hot ...

CERAMIC POWDER

Ceramic powder includes: barium titanate as a main component, wherein: a donor element having a larger valence than Ti is solid-solved in the barium titanate; an acceptor element having a smaller valence than Ti and larger ion radius than Ti and the donor element is solid-solved in the barium titanate, a solid solution amount of the donor element with respect to the barium titanate is 0.05 mol or more and 0.3 mol or less; a solid solution amount of the accepter element with respect to the barium titanate is 0.02 mol or more and 0.2 mol or less; and relationships y≥−0.0003x+1.0106, y≤−0.0002x+1.0114, 4≤x≤25 and y≤1.0099 are satisfied when a specific surface area of the ceramic powder is “x” and an axial ratio c/a of the ceramic powder is “y”. 1. Ceramic powder comprising:barium titanate as a main component,wherein:a donor element having a larger valence than Ti is solid-solved in the barium titanate;an acceptor element having a smaller valence than Ti and larger ion radius than Ti and the donor element is solid-solved in the barium titanate,a solid solution amount of the donor element with respect to the barium titanate is 0.05 mol or more and 0.3 mol or less on a presumption that an amount of the barium titanate is 100 mol and the donor element is converted into an oxide;a solid solution amount of the accepter element with respect to the barium titanate is 0.02 mol or more and 0.2 mol or less on a presumption that the amount of the barium titanate is 100 mol and the acceptor element is converted into an oxide; andrelationships y≥−0.0003x+1.0106, y≤−0.0002x+1.0114, 4≤x≤25 and y≤1.0099 are satisfied when a specific surface area of the ceramic powder is “x” and an axial ratio c/a of the ceramic powder is “y”.2. The ceramic powder as claimed in claim 1 , wherein the donor element is at least one of Mo and W.3. The ceramic powder as claimed in claim 1 , wherein the acceptor element is Mn. This application is a continuation of application Ser. No. 15/623,253, filed Jun. ...

LAMINATE OF CERAMIC LAYER AND SINTERED BODY OF COPPER POWDER PASTE

Provided is a laminate of a sintered body produced by sintering a copper powder paste and a ceramic substrate, which has improved adhesion between the sintered body and the ceramic substrate. A laminate with a copper powder paste sintered body laminated on a non-metal layer, wherein the copper powder paste sintered body has a crystal grain diameter of copper of 10 μm or less, as determined from an EBSD map image, based on Area Fraction method, and has an average reliability index (CI value) of 0.5 or more in an analysis area. 1. A laminate with a copper powder paste sintered body laminated on a non-metal layer ,wherein the copper powder paste sintered body has a crystal grain diameter of copper of 10 μm or less, as determined from an EBSD map image, based on Area Fraction method, and has an average reliability index (CI value) of 0.5 or more in an analysis area.2. The laminate according to claim 1 , wherein the copper powder paste sintered body comprises ceramic particles that are present at grain boundaries or in crystal grains.3. The laminate according to claim 2 , wherein the ceramic particles have a maximum particle diameter of 100 nm or less.4. The laminate according to claim 1 , wherein the non-metal layer is a layer comprising at least one of ceramics claim 1 , Si wafers claim 1 , and resin films.5. The laminate according to claim 4 , wherein non-metal layer is a ceramic layer.6. The laminate according to claim 1 , wherein the crystal grain diameter of copper as determined from the EBSD map image based on the Area Fraction method is from 1 μm to 10 μm.7. The laminate according to claim 1 , wherein the copper powder paste sintered body is a sintered body of a copper powder paste containing no glass frit.8. The laminate according to claim 1 , wherein the copper powder paste sintered body is a sintered body of a copper powder paste having a specific surface area of 1 mgor more.9. The laminate according to claim 1 , wherein the non-metal layer is a layer of ...

MULTILAYER CERAMIC CAPACITOR INCLUDING DIELECTRIC LAYERS WITH DIFFERENT REGIONS HAVING DIFFERENT CONCENTRATIONS OF DYSPROSIUM

A multilayer ceramic capacitor includes a ceramic body with first and second internal electrodes facing each other and dielectric layers interposed therebetween. First and second external electrodes are on external surfaces of the ceramic body and electrically connected to the first and second internal electrodes, respectively. A dielectric layer includes dielectric grains including, respectively, first regions in which dysprosium (Dy) is not present and second regions surrounding the first regions. Where a shortest distance between boundaries of the first regions (in which dysprosium (Dy) is not present) of two of the dielectric grains is “L,” the concentration of dysprosium (Dy) in a region within ±0.2 L from a halfway point between the boundaries is lower than that of dysprosium (Dy) in the second regions. 1. A multilayer ceramic capacitor comprising:a ceramic body including first and second internal electrodes facing each other with dielectric layers interposed therebetween; andfirst and second external electrodes on external surfaces of the ceramic body and electrically connected to the first and second internal electrodes, respectively,wherein the dielectric layers include dielectric grains, the dielectric grains including a first region essentially free of dysprosium (Dy) and a second region around the first regions, andwherein, where a shortest distance between boundaries of respective first regions of two adjacent dielectric grains is “L,” a first concentration of dysprosium (Dy) in a third region of material within ±0.2 L from a halfway point along the shortest distance between the two dielectric grains is lower than a second concentration of dysprosium (Dy) in the second regions.2. The multilayer ceramic capacitor of claim 1 , wherein the first concentration of dysprosium (Dy) in the third region is 50% or less of the second concentration of dysprosium (Dy) in the second regions.3. The multilayer ceramic capacitor of claim 1 , wherein a first thickness of ...

MULTILAYER CERAMIC CAPACITOR INCLUDING DIELECTRIC LAYERS WITH DIFFERENT REGIONS HAVING DIFFERENT CONCENTRATIONS OF DYSPROSIUM

A multilayer ceramic capacitor includes a ceramic body with first and second internal electrodes facing each other and dielectric layers interposed therebetween. First and second external electrodes are on external surfaces of the ceramic body and electrically connected to the first and second internal electrodes, respectively. A dielectric layer includes dielectric grains including, respectively, first regions in which dysprosium (Dy) is not present and second regions surrounding the first regions. Where a shortest distance between boundaries of the first regions (in which dysprosium (Dy) is not present) of two of the dielectric grains is “L,” the concentration of dysprosium (Dy) in a region within ±0.2L from a halfway point between the boundaries is lower than that of dysprosium (Dy) in the second regions. 1. A multilayer ceramic capacitor comprising:a ceramic body including first and second internal electrodes facing each other with dielectric layers interposed therebetween; andfirst and second external electrodes on external surfaces of the ceramic body and electrically connected to the first and second internal electrodes, respectively,wherein the dielectric layers include dielectric grains, the dielectric grains including a first region essentially free of dysprosium (Dy) and a second region around the first regions, andwherein, where a shortest distance between boundaries of respective first regions of two adjacent dielectric grains is “L,” a minimum concentration of dysprosium (Dy) at a point in a third region of material within ±0.2L from a halfway point along the shortest distance between the two dielectric grains is lower than a minimum concentration of dysprosium (Dy) in the second regions.2. The multilayer ceramic capacitor of claim 1 , wherein the minimum concentration of dysprosium (Dy) in the third region is 50% or less of the minimum concentration of dysprosium (Dy) in the second regions.3. The multilayer ceramic capacitor of claim 1 , wherein a ...

Ceramic Electronic Component and Method of Producing the Same

There is provided a ceramic electronic component including: a ceramic chip having a first surface, a second surface facing the first surface, and a third surface connecting the first surface to the second surface; a first electrode unit disposed on the first surface; a second electrode unit disposed on the second surface apart from the first electrode unit; and a modified zone disposed on the third surface, and modified by irradiation of a high energy beam. 1. A ceramic electronic component , comprising:a ceramic chip having a first surface, a second surface facing the first surface, and a third surface connecting the first surface to the second surface;a first electrode unit disposed on the first surface;a second electrode unit disposed on the second surface apart from the first electrode unit; anda modified zone disposed on the third surface, and modified by irradiation of a high energy beam.2. The ceramic electronic component according to claim 1 , whereinthe third surface includes a first covered part covered with the first electrode unit, and a second covered part covered with the second electrode unit, andthe modified zone is disposed between the first covered part and the second covered part.3. The ceramic electronic component according to claim 1 , whereinthe high energy beam is laser.4. The ceramic electronic component according to claim 3 , whereinthe modified zone includes dispersed voids.5. The ceramic electronic component according to claim 3 , whereinthe third surface is concave in the modified zone.6. The ceramic electronic component according to claim 1 , whereinthe high energy beam is an electron beam.7. The ceramic electronic component according to claim 6 , whereinthe modified zone includes a layer having a microstructure different from the ceramic chip.8. The ceramic electronic component according to claim 1 , wherein first internal electrodes extending in parallel with the third surface, and connected to the first electrode unit,', 'second ...

MULTILAYER CERAMIC CAPACITOR AND BOARD HAVING THE SAME

There are provided a multilayer ceramic capacitor and a board having the same. The multilayer ceramic capacitor includes: three external electrodes disposed to be spaced apart from one another on a mounting surface of a ceramic body; first internal electrodes each including first and second lead portions connected to the outermost external electrodes, respectively; and second internal electrodes each including a third lead portion connected to the middle external electrode, in which a first region in which the first internal electrodes are laminated is disposed in a central portion of the ceramic body in a width direction of the ceramic body, and second regions in which the first and second internal electrodes are alternately laminated are disposed on both sides of the intervening first region in the width direction of the ceramic body. 1. A multilayer ceramic capacitor comprising:a ceramic body including a plurality of dielectric layers laminated in a width direction thereof;first internal electrodes each including first and second lead portions which extend to be exposed to a mounting surface of the ceramic body and are disposed to be spaced apart from one another in a length direction of the ceramic body;second internal electrodes each including a third lead portion which extends to be exposed to the mounting surface of the ceramic body and is disposed between the first and second lead portions;first and second external electrodes disposed to be spaced apart from one another on the mounting surface of the ceramic body in the length direction of the ceramic body and connected to the first and second lead portions, respectively; anda third external electrode disposed between the first and second external electrodes on the mounting surface of the ceramic body and connected to the third lead portion,wherein the ceramic body includes a first region positioned in a central portion thereof in the width direction and including the first internal electrodes with the ...

BINDER FOR MANUFACTURING INORGANIC SINTERED BODY

The present invention provides a binder for manufacturing an inorganic sintered body that has excellent adhesiveness upon heat pressing and thermal decomposability and, especially when used as a binder for a ceramic green sheet, provides a ceramic green sheet having sufficient mechanical strength and flexibility. The present invention also provides a paste for manufacturing an inorganic sintered body, a ceramic green sheet, and a ceramic laminate individually manufactured using the binder for manufacturing an inorganic sintered body. The present invention provides a binder for manufacturing an inorganic sintered body containing a graft copolymer having a unit including polyvinyl butyral and a unit including a poly(meth)acrylic compound, the polyvinyl butyral having a polymerization degree of 800 to 5000, a hydroxy group content of 20 to 40 mol %, and a butyralization degree of 60 to 80 mol %, the unit including a poly(meth)acrylic compound having a glass transition temperature of 0 to 110° C. 1. A binder for manufacturing an inorganic sintered body containing a graft copolymer , the graft copolymer having a unit including polyvinyl butyral and a unit including a poly(meth)acrylic compound ,the polyvinyl butyral having a polymerization degree of 800 to 5000, a hydroxy group content of 20 to 40 mol %, and a butyralization degree of 60 to 80 mol %,the unit including a poly(meth)acrylic compound having a glass transition temperature of 0 to 110° C.2. The binder for manufacturing an inorganic sintered body according to claim 1 , {'br': None, 'Average glass transition temperature={(Glass transition temperature of unit including polyvinyl butyral)×(Amount of unit including polyvinyl butyral in graft copolymer)}+{(Glass transition temperature of unit including poly(meth)acrylic compound)×(Amount of unit including poly(meth)acrylic compound in graft copolymer)}\u2003\u2003(1).'}, 'wherein an average glass transition temperature obtained by calculation using Equation (1) is ...

Compositions, apparatus and methods for capacitive temperature sensing

A passive temperature-sensing apparatus, which includes a capacitive sensing element that includes a capacitive sensing composition that includes a ferroelectric ceramic material that exhibits a measurable electrical Curie temperature that is below 30 degrees C. The capacitive sensing composition exhibits a negative slope of capacitance versus temperature over the temperature range of from 30 degrees C. to 150 degrees C.

LAMINATE-TYPE CERAMIC ELECTRONIC COMPONENT

A laminate-type ceramic electric component such as laminated ceramic capacitor which has excellent mechanical strength and also has thermal shock resistance at the same time is provided. A laminate-type ceramic electronic component comprises an inner layer part, in which dielectric layers comprising ABO(which represents a perovskite crystal in which A contains at least Ba and B contains at least Ti) as a main component and internal electrode layers are alternately laminated; and a pair of outer layer parts which sandwich the inner layer part, wherein the outer layer parts comprise a continuous film containing a Ba—Si—Ti—O based crystal phase. 2. The laminate-type ceramic electronic component according to claim 1 , wherein claim 1 ,said Ba—Si—Ti—O based crystal phase contains a fresnoite crystal phase as main phase.3. The laminate-type ceramic electronic component according to wherein claim 1 ,the thickness of said continuous film is 0.2˜4.0 μm.4. The laminate-type ceramic electronic component according to wherein claim 1 ,the thickness of said continuous film is 1˜20% relative to each of said outer layer part.5. The laminate-type ceramic electronic component according to claim 2 , wherein claim 2 ,the thickness of said continuous film is 0.2˜4.0 μm.6. The laminate-type ceramic electronic component according to claim 2 , wherein claim 2 ,the thickness of said continuous film is 1˜20% relative to each of said outer layer part.7. The laminate-type ceramic electronic component according to claim 3 , wherein claim 3 ,the thickness of said continuous film is 1˜20% relative to each of said outer layer part.8. The laminate-type ceramic electronic component according to claim 5 , wherein claim 5 ,the thickness of said continuous film is 1˜20% relative to each of said outer layer part. The present invention relates to a laminate-type ceramic electronic component such as a laminated ceramic capacitor or the like.Accompanying with the miniaturization or thinning of electronic ...

Dielectric composition for low-temperature sintering, multilayer ceramic electronic component containing the same, and method of manufacturing multilayer ceramic electronic component

There are provided a dielectric composition for low-temperature sintering and a multilayer ceramic electronic component manufactured using the dielectric composition and the dielectric composition may contains: BaTiO 3 as a main ingredient; and a Li 2 O—BaO compound as an accessory ingredient, wherein the accessory ingredient is contained in an amount of 0.2 mol % to 0.8 mol %, on the basis of 100 mol % of the main ingredient.

MULTILAYER CERAMIC CAPACITOR AND MANUFACTURING METHOD OF MULTILAYER CERAMIC CAPACITOR

A multilayer ceramic capacitor includes: a multilayer structure in which each of dielectric layers and each of internal electrode layers are alternately stacked, a main component of the dielectric layers being ceramic, wherein: the multilayer structure comprises surface portions and a center portion in a stacking direction of the dielectric layers and the internal electrode layers, the surface portions having a first thickness from a surface of the multilayer structure, the center portion being next to the surface portion in the stacking direction and having a second thickness; and an average length of crystal grains of a main component metal of the internal electrode layers of the surface portions is 0.8 times or less than an average length of crystal grains of a main component metal of the internal electrode layers of the center portion. 1. A multilayer ceramic capacitor comprising:a multilayer structure in which each of dielectric layers and each of internal electrode layers are alternately stacked, a main component of the dielectric layers being ceramic,wherein:the multilayer structure comprises surface portions and a center portion in a stacking direction of the dielectric layers and the internal electrode layers, the surface portions having a first thickness from a surface of the multilayer structure, the center portion being next to the surface portion in the stacking direction and having a second thickness; andan average length of crystal grains of a main component metal of the internal electrode layers of the surface portions is 0.8 times or less than an average length of crystal grains of a main component metal of the internal electrode layers of the center portion.2. The multilayer ceramic capacitor as claimed in claim 1 , wherein the first thickness is 1/10 of a size of the multilayer structure in the stacking direction.3. The multilayer ceramic capacitor as claimed in claim 1 , wherein a number of crystal grain boundary of the main component metal of ...

MULTILAYER CERAMIC CAPACITOR AND MANUFACTURING METHOD OF MULTILAYER CERAMIC CAPACITOR

A multilayer ceramic capacitor includes: a multilayer structure in which each of dielectric layers and each of internal electrode layers are alternately stacked, a main component of the dielectric layers being ceramic, wherein: a second-phase has an average diameter of 150 nm or less and is in at least one of interfaces between the dielectric layers and the internal electrode layers; and at least one of the internal electrode layers includes a grain of which a main component is ceramic. 1. A multilayer ceramic capacitor comprising:a multilayer structure in which each of dielectric layers and each of internal electrode layers are alternately stacked, a main component of the dielectric layers being ceramic,wherein:a second-phase has an average diameter of 150 nm or less and is in at least one of interfaces between the dielectric layers and the internal electrode layers; andat least one of the internal electrode layers includes a grain of which a main component is ceramic.2. The multilayer ceramic capacitor as claimed in claim 1 , wherein an average diameter of the second-phase is an average value of long diameters of 200 numbers of second-phases.3. The multilayer ceramic capacitor as claimed in claim 1 , wherein a total area of the second-phase is 0.8% or more and 5.1% or less with respect to a total area of the dielectric layers claim 1 , in a cross section of the dielectric layers and the internal electrode layers in a stacking direction of the dielectric layers and the internal electrode layers.4. The multilayer ceramic capacitor as claimed in claim 1 , wherein the average diameter of the second-phase is 35% or less with respect to an average grain diameter of a main component ceramic of the dielectric layers.5. The multilayer ceramic capacitor as claimed in claim 4 , wherein the average grain diameter of the main component ceramic of the dielectric layers is an average value of long diameters of 200 numbers of main component ceramic grain of the dielectric layers. ...

DIELECTRIC CERAMIC COMPOSITION AND MULTILAYER CERAMIC CAPACITOR COMPRISING THE SAME

A dielectric ceramic composition and a multilayer ceramic capacitor comprising the same are provided. The dielectric ceramic composition includes a BaTiO-based base material main ingredient and an accessory ingredient, where the accessory ingredient includes dysprosium (Dy) and cerium (Ce) as first accessory ingredients. A total content of Dy and Ce is greater than 0.25 mol % and equal to or less than 1.0 mol % based on 100 mol % of the base material main ingredient. 1. A dielectric ceramic composition comprising{'sub': '3', 'a barium titanate (BaTiO)-based base material main ingredient and an accessory ingredient,'}wherein the accessory ingredient comprises dysprosium (Dy) and cerium (Ce) as first accessory ingredients; anda total content of Dy and Ce is greater than 0.25 mol % and equal to or less than 1.0 mol % based on 100 mol % of the base material main ingredient.2. The dielectric ceramic composition of claim 1 , wherein the content of Ce satisfies 0.233 mol %≤Ce≤0.932 mol % based on 100 mol % of the base material main ingredient.3. The dielectric ceramic composition of claim 1 , wherein the first accessory ingredient further comprises an oxide or carbonate comprising lanthanum (La).4. The dielectric ceramic composition of claim 1 , wherein the dielectric ceramic composition comprises 0.1 mol to 2.0 mol of a second accessory ingredient based on 100 mol of the base material main ingredient claim 1 ,wherein the second accessory ingredient comprises an oxide comprising at least one element selected from the group consisting of manganese (Mn), vanadium (V), chromium (Cr), iron (Fe), nickel (Ni), cobalt (Co), copper (Cu) and zinc (Zn) or a carbonate comprising at least one element selected from the group consisting of Mn, V, Cr, Fe, Ni, Co, Cu and Zn.5. The dielectric ceramic composition of claim 1 , further comprising 0.001 mol to 0.5 mol of a third accessory ingredient claim 1 , based on 100 mol of the base material main ingredient claim 1 ,wherein the third ...

MULTI-LAYERED CERAMIC CAPACITOR AND METHOD OF MANUFACTURING THE SAME

A multilayer ceramic capacitor includes a ceramic body including a dielectric layer and first and second internal electrodes disposed to oppose each other with the dielectric layer interposed therebetween, and first and second external electrodes disposed outside of the ceramic body and connected to the first and second internal electrodes, respectively. The ceramic body includes an active portion including of the first and second internal electrodes disposed to oppose each other with the dielectric layer interposed therebetween to form capacitance, and a cover portion disposed in upper and lower portions of the active portion. The cover portion has a larger number of pores than the dielectric layer of the active portion, and the cover portion includes a ceramic-polymer composite filled with a polymer in the pores of the cover portion. 1. A multilayer ceramic capacitor , comprising:a ceramic body including a dielectric layer and first and second internal electrodes disposed to oppose each other with the dielectric layer interposed therebetween, and having a first surface and a second surface opposing each other, a third surface and a fourth surface opposing each other and connecting the first and second surfaces, and a fifth surface and a sixth surface connected to the first to fourth surfaces and opposing each other; andfirst and second external electrodes disposed outside of the ceramic body, and connected to the first and second internal electrodes, respectively,wherein the ceramic body comprises an active portion including the first and second internal electrodes disposed to oppose each other with the dielectric layer interposed therebetween to form capacitance, and a cover portion disposed in upper and lower portions of the active portion,the cover portion has a larger number of pores than the dielectric layer of the active portion, andthe cover portion comprises a ceramic-polymer composite filled with a polymer in the pores of the cover portion.2. The ...

MULTILAYER CERAMIC CAPACITOR

A multilayer ceramic capacitor includes a body including a dielectric layer and first and second internal electrodes disposed with the dielectric layer interposed therebetween; first and second connection electrodes penetrating the body in a direction perpendicular to the dielectric layer and connected to the first internal electrode; third and fourth connection electrodes penetrating the body in a in a direction perpendicular to the dielectric layer and connected to the second internal electrode; first and second external electrodes disposed on both surfaces of the body, and connected to the first and second connection electrodes; and third and fourth external electrodes connected to the third and fourth connection electrodes, and at least a portion of the first and second connection electrodes is exposed to the surface of the body. 1. A multilayer ceramic capacitor , comprising:a body including a dielectric layer and first and second internal electrodes disposed with the dielectric layer interposed therebetween, and having a first surface and a second surface opposing each other in a third direction, a third surface and a fourth surface opposing each other in a second direction, and a fifth surface and a sixth surface opposing each other in a first direction;first and second connection electrodes penetrating the body in a direction perpendicular to the dielectric layer and connected to the first internal electrode;third and fourth connection electrodes penetrating the body in the direction perpendicular to the dielectric layer and connected to the second internal electrode;first and second external electrodes disposed on both surfaces of the body opposing each other in the third direction, and connected to the first and second connection electrodes; andthird and fourth external electrodes spaced apart from the first and second external electrodes, and connected to the third and fourth connection electrodes,wherein a portion of at least one of the first and second ...

MULTILAYER CERAMIC ELECTRONIC COMPONENT

A multilayer ceramic electronic component includes a body including an internal electrode alternately arranged with a dielectric layer; and an external electrode disposed on the body and connected to the internal electrode. The internal electrode includes a plurality of nickel (Ni) grains, and a composite layer including tin (Sn) and nickel (Ni) is disposed at a grain boundary of the nickel (Ni) grains. 1. A multilayer ceramic electronic component comprising:a body including an internal electrode alternately arranged with a dielectric layer; and an external electrode disposed on the body and connected to the internal electrode, wherein the internal electrode includes a plurality of nickel (Ni) grains, and a composite layer including tin (Sn) and nickel (Ni) is disposed at a grain boundary of the nickel (Ni) grains, wherein, in the composite layer, a molar ratio of tin (Sn) is greater than or equal to 0.0001, based on a total content of the composite layer.2. The multilayer ceramic electronic component of claim 1 , wherein a thickness of the composite layer including tin (Sn) and nickel (Ni) is within a range from 1 to 15 nm.3. The multilayer ceramic electronic component of claim 1 , wherein the composite layer including tin (Sn) and nickel (Ni) substantially encloses at least one of the nickel (Ni) grains.4. The multilayer ceramic electronic component of claim 1 , wherein a thickness of the dielectric layer is 0.4 μm or less.5. The multilayer ceramic electronic component of claim 1 , wherein a thickness of the internal electrode is 0.4 μm or less.6. The multilayer ceramic electronic component of claim 1 , wherein 85%≤C claim 1 , where C is a ratio of a length of a portion where an actual internal electrode is formed relative to a total length of the internal electrode.7. The multilayer ceramic electronic component of claim 1 , wherein the multilayer ceramic electronic component has a length of 0.4 mm or less and a width of 0.2 mm or less.8. A multilayer ceramic ...

MULTILAYER CERAMIC CAPACITOR AND METHOD OF MANUFACTURING THE SAME

A multilayer ceramic capacitor includes: a ceramic body including dielectric layers and having first and second surfaces opposing each other; a plurality of internal electrodes disposed in the ceramic body; and first and second side margin portions disposed on end portions of the internal electrodes exposed to the first and second surfaces, wherein the ceramic body includes an active portion, and cover portions disposed on upper and lower surfaces of the active portion, each of the first and second side margin portions is divided into a first region and a second region, each of the cover portions is divided into a first region and a second region, and contents of magnesium (Mg) contained in the second regions of the cover portions and the first and second side margin portions are larger than those of magnesium (Mg) contained in the first regions thereof, respectively. 1. A multilayer ceramic capacitor comprising:a ceramic body including dielectric layers and having first and second surfaces opposing each other, third and fourth surfaces connecting the first and second surfaces, and fifth and sixth surfaces connected to the first to fourth surfaces and opposing each other;a plurality of internal electrodes disposed in the ceramic body, exposed to the first and second surfaces, and each having one end exposed to the third or fourth surface; anda first side margin portion and a second side margin portion disposed on end portions of the internal electrodes exposed to the first and second surfaces, respectively,wherein the ceramic body includes an active portion including the plurality of internal electrodes disposed to face each other with each of the dielectric layers interposed therebetween and forming capacitance, and cover portions disposed on upper and lower surfaces of the active portion,each of the first and second side margin portions is divided into a first region adjacent to an outer surface of the first and second side margin portions and a second region ...

MULTILAYER CERAMIC CAPACITOR AND METHOD OF MANUFACTURING THE SAME

A multilayer ceramic capacitor includes: a ceramic body including dielectric layers and having first and second surfaces opposing each other, third and fourth surfaces connecting the first and second surfaces, and fifth and sixth surfaces connected to the first to fourth surfaces and opposing each other; internal electrodes disposed in the ceramic body, exposed to the first and second surfaces, and each having one end exposed to the third or fourth surface; and first and second side margin portions disposed on end portions of the internal electrodes exposed to the first and second surfaces. The first side margin portion has a slope with respect to the fifth or sixth surface having the same sign at corner portions thereof, and the second side margin portion has a slope with respect to the fifth or sixth surface having the same sign at corner portions thereof. 1. A multilayer ceramic capacitor comprising:a ceramic body including dielectric layers and having first and second surfaces opposing each other, third and fourth surfaces connecting the first and second surfaces, and fifth and sixth surfaces connected to the first to fourth surfaces and opposing each other;a plurality of internal electrodes disposed in the ceramic body, exposed to the first and second surfaces, and each having one end exposed to the third or fourth surface;first and second side margin portions disposed on the end portions of the internal electrodes exposed to the first and second surfaces;a first external electrode disposed on the third surface of the ceramic body and covering respective first portions of the first, second, fifth, and sixth surfaces; anda second external electrode disposed on the fourth surface of the ceramic body and covering respective second portions of the first, second, fifth, and sixth surfaces,wherein the first side margin portion has a slope with respect to the fifth surface or the sixth surface having the same sign at corner portions at which the first surface of the ...

MULTILAYER CERAMIC CAPACITOR AND METHOD OF MANUFACTURING THE SAME

A multilayer ceramic capacitor includes: a ceramic body including dielectric layers and having first and second surfaces opposing each other, third and fourth surfaces connecting the first and second surfaces, and fifth and sixth surfaces connected to the first to fourth surfaces and opposing each other; internal electrodes disposed in the ceramic body, exposed to the first and second surfaces, and each having one end exposed to the third or fourth surface; and first and second side margin portions disposed on end portions of the internal electrodes exposed to the first and second surfaces. The first side margin portion has a slope with respect to the fifth or sixth surface having the same sign at corner portions thereof, and the second side margin portion has a slope with respect to the fifth or sixth surface having the same sign at corner portions thereof. 1. A multilayer ceramic capacitor comprising:a ceramic body including dielectric layers and having first and second surfaces opposing each other, third and fourth surfaces connecting the first and second surfaces, and fifth and sixth surfaces connected to the first to fourth surfaces and opposing each other;a plurality of internal electrodes disposed in the ceramic body, exposed to the first and second surfaces, and each having one end exposed to the third or fourth surface;first and second side margin portions disposed on the end portions of the internal electrodes exposed to the first and second surfaces;a first external electrode disposed on the third surface of the ceramic body and covering respective first portions of the first, second, fifth, and sixth surfaces; anda second external electrode disposed on the fourth surface of the ceramic body and covering respective second portions of the first, second, fifth, and sixth surfaces,wherein the first side margin portion has a slope with respect to the fifth surface or the sixth surface having the same sign at corner portions at which the first surface of the ...

SEMICONDUCTOR CERAMIC COMPOSITION, METHOD FOR PRODUCING SAME, PTC ELEMENT AND HEAT GENERATING MODULE

A semiconductor ceramic composition is represented by the formula [(Bi—Na)(BaR)]TiO(R being at least one kind of rare earth element), in which x, y, θ and δ satisfy 0 Подробнее

METHOD OF MANUFACTURING BARIUM TITANATE AND ELECTRONIC COMPONENT OF BARIUM TITANATE

A method of manufacturing barium titanate powder by dispersing, in a solvent such as ethanol, barium titanate. Then, the barium titanate is separated from the slurry by evaporating the solvent while pressurizing the slurry in a pressure container. Then, the separated barium titanate is subjected to a heat treatment, thereby producing the barium titanate powder. 1. A method of manufacturing barium titanate powder , said method comprising:providing a slurry containing barium titanate dispersed in a solvent;separating the barium titanate from the slurry by evaporating the solvent while pressurizing the slurry; andheat-treating the separated barium titanate to produce the barium titanate powder.2. The method of manufacturing barium titanate powder according to claim 1 , wherein the solvent is at least one of a water-based solvent claim 1 , an organic-based solvent claim 1 , and a water-based and organic-based solvent.3. The method of manufacturing barium titanate powder according to claim 1 , wherein the solvent is ethanol.4. The method of manufacturing barium titanate powder according to claim 3 , wherein a concentration of the ethanol in the solvent is 5 vol %.5. The method of manufacturing barium titanate powder according to claim 1 , wherein the barium titanate is separated from the slurry by pressurizing the slurry by putting the slurry into a container claim 1 , heating the slurry from an outside of the container claim 1 , filling the container with a gas from the outside of the container claim 1 , and evaporating the solvent from the slurry.6. The method of manufacturing barium titanate powder according to claim 1 , wherein the gas is N.7. The method of manufacturing barium titanate powder according to claim 1 , wherein the barium titanate is separated from the slurry by pressurizing the slurry by putting the slurry into a container claim 1 , heating the slurry from an outside of the container claim 1 , and evaporating the solvent from the slurry.8. The method of ...

DIELECTRIC COMPOSITION AND PREPARATION METHOD THEREOF

There are provided a dielectric composition and a preparation method thereof, the dielectric composition including: a first perovskite powder for a core represented by ABO: and a second perovskite powder for a shell represented by ABO, having an average particle diameter corresponding to ⅓ to 1/10 of an average particle diameter of the first perovskite powder, and included in an amount of 1 to 70 parts by weight with respect to 100 parts by weight of the first perovskite powder, wherein particles of the second perovskite powder have pores having a volume fraction of 3 to 50 vol % therein. According to the present invention, there are provided a dielectric composition having excellent dielectric characteristics and electrical characteristics, and a preparation method thereof. 1. A dielectric composition comprising:{'sub': '3', 'a first perovskite powder for a core represented by ABO: and'}{'sub': '3', 'a second perovskite powder for a shell represented by ABO, having an average particle diameter corresponding to ⅓ to 1/10 of an average particle diameter of the first perovskite powder, and included in an amount of 1 to 70 parts by weight with respect to 100 parts by weight of the first perovskite powder,'}wherein particles of the second perovskite powder have pores having a volume fraction of 3 to 50 vol % therein.2. The dielectric composition of claim 1 , wherein the A includes at least one selected from a group consisting of barium (Ba) claim 1 , strontium (Sr) claim 1 , lead (Pb) claim 1 , and calcium (Ca).3. The dielectric composition of claim 1 , wherein the B includes at least one selected from a group consisting of titanium (Ti) and zirconium (Zr).4. The dielectric composition of claim 1 , wherein the perovskite powder is one selected from a group consisting of BaTiO claim 1 , BaTiZrO claim 1 , BaYTiO claim 1 , BaDyTiO claim 1 , and BaHoTiO(0 Подробнее

DIELECTRIC CERAMIC COMPOSITION AND MULTILAYER CERAMIC CAPACITOR INCLUDING THE SAME

There are provided a dielectric ceramic composition and a multilayer ceramic capacitor including the same. The dielectric ceramic composition according to embodiments of the present disclosure includes a base powder represented by xSrTiO-(1−x)BiMO(M includes Mg and Ti) containing a first main component represented by SrTiOand a second main component represented by BiMO, wherein x satisfies 0.5≦x≦0.9. 1. A dielectric ceramic composition comprising a a base powder represented by xSrTiO-(1−x)BiMO(M includes Mg and Ti) containing a first main component represented by SrTiOand a second main component represented by BiMO ,wherein x satisfies 0.5≦x≦0.9.2. The dielectric ceramic composition of claim 1 , wherein M is represented by MgTi.3. The dielectric ceramic composition of claim 1 , further comprising a first sub-component of 0.5 mol to 3.0 mol claim 1 , based on the base powder of 100 mol claim 1 , the first sub-component being an oxide or a carbonate containing at least one of Mn claim 1 , V claim 1 , Cr claim 1 , Fe claim 1 , Ni claim 1 , Co claim 1 , Cu and Zn.4. The dielectric ceramic composition of claim 1 , further comprising a second sub-component of 0.5 mol to 3.0 mol claim 1 , based on the base powder of 100 mol claim 1 , the second sub-component being an oxide containing Si or a glass compound containing Si.5. The dielectric ceramic composition of claim 1 , wherein the dielectric ceramic composition has a permittivity of 1000 or more at room temperature.6. A multilayer ceramic capacitor claim 1 , comprising:a ceramic body in which dielectric layers and first and second internal electrodes are alternately stacked; andfirst and second external electrodes formed on both end portions of the ceramic body and electrically connected to the first and second internal electrodes,{'sub': 3', '3', '3', '3, 'wherein the dielectric layers include a dielectric ceramic composition including a base powder represented by xSrTiO-(1−x)BiMO(M includes Mg and Ti) containing a first ...