Abstract: A small, large-capacitance multi-layer ceramic capacitor suppressed for remarkable lowering of permittivity, having a capacitor main body formed of ceramic dielectric layers comprising barium titanate as a main component and an Si oxide at a ratio of 0.5 to 10 mol being converted as SiO2 based on 100 mol of barium titanate and internal electrode layers, and a pair of external electrodes which are formed at the end faces of the capacitor main body and connected electrically with the internal electrode layers, in which the ceramic dielectric layer has crystal grains, crystal grain boundaries each present between the crystal grains and a grain boundary triple point, and B/A is 0.

Abstract: A dielectric material is provided. The material includes Ca1-x-yBaxSryTi1-zCrzO3-?Ap, wherein A is nitrogen, fluorine, or combinations thereof; x and y can vary between the value of zero and one such that 0<x<1 and 0<y<1; z can vary between the value of zero and 0.01 such that 0?z?0.01; and ? and p can vary between the value of zero and one such that 0???1 and 0?p?1, with a proviso that z and p are not simultaneously zero. A dielectric component including the dielectric material and a system including the dielectric component are provided.

Abstract: A polyimide resin is provided. The polyimide resin comprises the reaction product of a polyimide resin and an amine comprising a C1-10 hydrocarbon substituted with CN, F, SO2, SO, S, SO3, SO3?, PO, PO2H, PO3H, PO2?, PO3?2, CO, CO2?, CO2H, CONH, CONH2, NHCOHN, OCONH, OCO2, N, NH, NH2, NO2, CSNH, CSNH2, NHCSNH, OTi(OR4)3, or OSi(OR4)3 or combinations of these, wherein R4 is a C1-10 aliphatic or aromatic hydrocarbon. The resin may be used to provide a thin film that in turn, may advantageously be used to form, wholly or in part, articles such as capacitors, sensors, batteries, flexible printed circuit boards, keyboard membranes, motor/transformer insulations, cable wrappings, industrial tapes, interior coverage materials, and the like. In particular, a capacitor comprising the thin film and methods of making the same are also provided.

Abstract: Ceramic dielectric materials that can be utilized as electronic components, such as dielectric resonators are disclosed. The material can have a formula Ba12M?(28+a/3)Ti(54?a-b)M?aGebO162, wherein M? is at least one rare earth element selected from the group consisting of lanthanum, neodymium, samarium, gadolinium, and yttrium, M? is at least one element selected from the group consisting of aluminum, gallium, chromium, indium, scandium, and ytterbium, 0?a?6, and 0?b?3. The ceramic dielectric material can also have a formula Ba12M?(28+2x/3)Ti(54?x?y)M??xGeyO162, wherein M? is at least one rare earth element selected from the group consisting of lanthanum, neodymium, samarium, gadolinium, and yttrium, M?? is at least one metal selected from the group consisting of magnesium, zinc, nickel, and cobalt, 0?x?3, and 0?y?3. One or more aspects of the present invention pertain to methods of fabricating a dielectric component. Methods of synthesizing the disclosed ceramic dielectric materials are also disclosed.

Abstract: A composition for extrusion-molded bodies which comprises a) an inorganic material that sets as a result of baking or sintering, and b) a methylhydroxyethyl cellulose having a DS(methyl) of from 0.8 to 2.5, an MS(hydroxyethyl) of from 0.20 to 1.20 and a sum of the DS(methyl) and the MS(hydroxyethyl) of at least 2.00 is useful for producing extrusion-molded bodies for use as a carrier for a catalyst, a catalyst, a heat exchanger, or a filter.

Abstract: A dielectric ceramic includes a main component and a minor component. The main component includes a BaTi4O9 crystal phase and a Ba2Ti9O20 crystal phase, is represented by BaO.xTiO2, has a molar ratio x of TiO2 to BaO of 4.6 to 8.0, and in X-ray diffraction, and has an X-ray diffraction peak intensity ratio I29/I14 of a maximum diffraction peak intensity (I14) of the BaTi4O9 crystal phase to a maximum diffraction peak intensity (W of the Ba2Ti9O20 crystal phase of 1 or more. The minor component includes a boron oxide and a copper oxide, in which the boron oxide content is in the range of 0.5 to 5.0 parts by mass with respect to 100 parts by mass of the main component, and the copper oxide content is in the range of 0.1 to 3.0 parts by mass with respect to 100 parts by mass of the main component.

Abstract: The present invention relates to a dielectric thin film composition showing linear dielectric properties, in which tin oxides (SnO2) are introduced into a (Ba,Sr)TiO3 (BSTO) dielectric thin film in a continuous diffusion gradient manner in composition. Since the non-linear dielectric properties of BSTO are converted to linear dielectric properties by the addition of SnO2 according to the present invention, the dielectric thin film composition of the present invention is characterized in that: there is little change in the capacitance according to the applied electric field; it has a high dielectric constant capable of showing a desired capacitance even at a thickness suitable for preventing the occurrence of electron tunneling; and it exhibits paraelectric properties similar to the conventional dielectric substances such as SiO2 while having a very low dielectric loss.

Abstract: A dielectric ceramic (and capacitor containing it) balancing high temperature load characteristics and temperature characteristics of capacitance even when layer thickness is less than 1 ?mhas a mixture of different crystal grains containing a barium titanate compound as the main constituent. The first crystal grains can contain rare earth element solid solution region lat the surface layer section. The second crystal grains have a core-shell structure including a shell section having a rare earth element solid solution present. The first and second crystal grains are 12% to 84% f and 16% to 88%, respectively, of the total number of crystal grains.

Abstract: A laminated ceramic capacitor which provides favorable life characteristics, even when a high electric field strength is applied while dielectric ceramic layers are reduced in layer thickness to less than 1 ?m, contains a dielectric ceramic a compound represented by: (Ba1-x/100Cax/100)mTiO3 (0?x?20) as its main constituent, and as its accessory constituent, aMg-bSi-cMn-dR (R is at least one of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y, and a, b, c, and d (part by mol) respectively satisfy the conditions of 0.1<a?20.0, 0.5<b?20.0, 0.1<c?10.0, and 1.0<d?30.0 with respect to 100 parts by mol of the main constituent). The average grain size is 20 nm or more and less than 100 nm for crystal grains in a sintered body obtained by firing the dielectric ceramic.

Abstract: Electronic device 1 comprises an element body 10, comprising a dielectric layer 2 constituted by a dielectric ceramic composition, and a terminal electrode 4, formed outside of the element body 10. The dielectric ceramic composition comprised a main component including barium titanate; a first subcomponent including at least one oxide of Mg and Ca; a second subcomponent including SiO2; a third subcomponent including at least one oxide of Mn and Cr; and a fourth subcomponent including an oxide of rare earth elements, wherein the net valence of Mn and/or Cr in the third subcomponent is 2.2 to 2.4. According to the electronic device 1, both high temperature accelerated lifetime characteristics and capacity stress aging characteristics can be improved in a balanced manner.

Abstract: A dielectric ceramic composition of the present invention comprises; BamTiO2+m (note that, m is 0.99?m?1.01), and BanZrO2+n (note that, n is 0.99?n?1.01); wherein said dielectric ceramic composition consists of plurality of dielectric particles and a grain boundary phase existing between said dielectric particles adjacent to each other, when said dielectric particle having BamTiO2+m as a main component is set to a first dielectric particle, said dielectric particle having BanZrO2+n as a main component is set to a second dielectric particle, an average crystal diameter of said first dielectric particle is set to D1 (?m), and an average crystal diameter of said second dielectric particle is set to D2 (?m), then a ratio (D2/D1) of said D2 with respect to said D1 is 0.04 to 0.33, said D2 is 0.02 to 0.25 ?m, and in said dielectric ceramic composition a ratio of the total number of said second dielectric particle with respect to the total number of said first dielectric particle is 0.10 to 2.

Abstract: A laminated ceramic capacitor which has a long high temperature load life, small variations in life, large capacitance, high electrical insulation property, and favorable capacitance temperature characteristics, even when high strength electric field is applied while reducing the thickness of dielectric ceramic layers uses a dielectric ceramic represented by the formula: 100(Ba1-xCax)mTiO3+aMgO+bVO5/2+cReO3/2+dMnO+eSiO2 where Re being at least one of Y, La, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb), 0.05?x?0.15, 0.01?a?0.1, 0.05?b?0.5, 1.0?c?5.0, 0.1?d?1.0, 0.5?e?2.5, and 0.990?m?1.030.

Abstract: A silica base composite photocatalyst that has appropriate water purification capability, inhibiting precipitation of metal oxides; and a process for producing the same. The silica base composite photocatalyst is one composed mainly of a composite oxide phase consisting of an oxide phase (first phase) composed mainly of silica component and a titania phase (second phase) wherein the ratio of presence of the second phase increases aslope toward the surface layer, characterized in that at least one metal oxide selected from among strontium titanate and barium titanate is contained in the second phase.

Abstract: A dielectric ceramic composition comprising a main component expressed by a general formula (Ba1?x?ySrxCay)m(Ti1?zZrz)O3, Mg oxide, oxides of at least one kind selected from Mn and Cr, rare earth oxide, an oxide including Si and a composite oxide including Ba, Sr and Zr. The general formula shows that 0.20?x?0.40, 0?y?0.20, 0?z?0.30, and 0.950?m?1.050. Within a temperature range of ?25 to 105° C., a capacitance change rate on the basis of a capacitance at 25° C. is within ?15 to +5% with respect to slope “a” which shows capacity temperature characteristic on the basis of the capacitance at 25° C., and the slope “a” is ?5500 to ?1800 ppm/° C. By the present invention, a dielectric ceramic composition which is able to set the capacitance change rate to a predetermined range with respect to absolute value of capacity temperature characteristic within a wide temperature range even when the absolute value is large can be obtained.

Abstract: To increase the dielectric constant of a dielectric ceramic containing ABO3 (A being Ba alone or further containing at least one of Ca and Sr, and B is Ti alone or or further contains at least one of Zr and Hf) as its main constituent and containing Re (Re is at least one of Dy, Ho, Sc, Y, Gd, Er, Yb, Tb, Tm, and Lu) as an accessory constituent, the main phase grains are ABO3 based main constituent and secondary phase grains have a different composition from the main phase grains. More Re is concentrated in the secondary phase grains in such a way that the ratio of the content of Re in the secondary phase grains to the total content of Re in the dielectric ceramic is 50% or more. The content of Re in the secondary phase grains is preferably 30 mol % or more.

Abstract: Production method of dielectric ceramic composition including a main component of (Ba1-x-ySrxCay)m(Ti1-zZrz)O3 comprises steps of preparing materials of a first main component of (Ba1-x1-ySrx1Cay)m(Ti1-zZrz)O3 and a second main component of (Ba1-x2-ySrx2Cay)m(Ti1-zZrz)O3, obtaining a material of the main component by mixing materials of the first and second main component, and fixing the material of the main component. When molar numbers of main component, first main component and second main component are 1, “a” and “b”, respectively, a+b=1, a:b=20:80 to 80:20, 0.20?x?0.40, x=(ax1+bx2), x1/x2?1.05, 0?y?0.20, 0?z?0.30 and 0.950?m?1.050. By the present invention, the dielectric ceramic composition in which capacitance change rate is, set to the predetermined range with respect to an absolute value of capacity temperature characteristic, which is large, within wide temperature range can be obtained.

Abstract: Provided is a manufacturing method for preferentially-oriented oxide ceramics having a high degree of crystal orientation. The manufacturing method includes: obtaining slurry containing an oxide crystal B having magnetic anisotropy; applying a magnetic field to the oxide crystal B, and obtaining a compact of the oxide crystal B; and subjecting the compact to oxidation treatment to obtain preferentially-oriented oxide ceramics including a compact of an oxide crystal C having a crystal system that is different from a crystal system of one of a part and a whole of the oxide crystal B. By (1) reacting raw materials, (2) reducing the oxide crystal A, or (3) keeping the oxide crystal A at high temperature and quenching the oxide crystal A, the oxide crystal B is obtained to be used in the slurry.

Abstract: Wet-chemical methods involving the use of water-soluble hydrolytically stable metal-ion chelate precursors and an ammonium oxalate precipitant can be used in a coprecipitation procedure for the preparation of ceramic powders. Both the precursor solution and the ammonium oxalate precipitant solution are at neutral or near-neutral pH. A composition-modified barium titanate is one of the ceramic powders that can be produced. Certain metal-ion chelates can be prepared from 2-hydroxypropanoic acid and ammonium hydroxide.

Abstract: Provided is a modified perovskite type composite oxide in which the dielectric characteristics are equal to or better than those prior to modification, there is no substantial elution of coating components from the modifying coating components, and elution of the A-site metals is suppressed effectively, while the cracking traits are good. A modified perovskite type composite oxide in which the particle surface of a perovskite type composite oxide is firstly coated with at least one selected from a group consisting of TiO2, Al2O3, ZrO2, and Nd2O3, wherein the first coating is formed by hydrolyzing at least one selected from a group consisting of a hydrolyzable TiO2 precursor, a hydrolyzable Al2O3 precursor, a hydrolyzable ZrO2 precursor, and a hydrolyzable Nd2O3 precursor, and then calcining it at 700° C. to 1200° C.

Abstract: The present invention provides a fuel cell in which electricity is generated and a paraffin is converted to an olefin. Between the anode and cathode compartment of the fuel cell is a ceramic membrane of the formula BaCe0.85-eAeLfY0.05-0.25O(3-?) wherein A is selected from the group consisting of Hf and Zr and mixtures thereof, e is from 0.1 to 0.5, L is a lanthanide and f is from 0 to 0.25 and ? is the oxygen deficiency in the ceramic.

Abstract: There is provided a dielectric ceramic composition including a base powder expressed by a composition formula of Bam(Ti1-xZrx)O3, where 0.995?m?1.010 and 0<x?0.10, and first to fifth accessory components, and a multilayer ceramic capacitor having the same. The multilayer ceramic capacitor having the dielectric ceramic composition has a high dielectric constant and superior high-temperature reliability.

Abstract: Wet-chemical methods involving the use of water-soluble hydrolytically stable metal-ion chelate precursors and the use of a nonmetal-ion-containing strong base can be used in a coprecipitation procedure for the preparation of ceramic powders. Examples of the precipitants used include tetraalkylammonium hydroxides. A composition-modified barium titanate is one of the ceramic powders that can be produced. Certain metal-ion chelates can be prepared from 2-hydroxypropanoic acid and ammonium hydroxide.

Abstract: A transparent, polycrystalline ceramic is described. The ceramic comprises crystallites of the formula AxCuByDvEzFw, whereby A and C are selected from the group consisting of Li+, Na+, Be2+, Mg2+, Ca2+, Sr2+, Ba2+, Al3+, Ga3+, In3+, C4+, Si4+, Ge4+, Sn2+/4+, Sc3+, Ti4+, Zn2+, Zr4+, Mo6+, Ru4+, Pd2+, Ag2+, Cd2+, Hf4+, W4+/6+, Re4+, Os4+, Ir4+, Pt2+/4+, Hg2+ and mixtures thereof, B and D are selected from the group consisting of Li+, Na+, K+, Mg2+, Al3+, Ga3+, In3+, Si4+, Ge4+, Sn4+, Sc3+, Ti4+, Zn2+, Y3+, Zr4+, Nb3+, Ru3+, Rh3+, La3+, Lu3+, Gd3+ and mixtures thereof, E and F are selected mainly from the group consisting of the divalent anions of S, Se and O and mixtures thereof, x, u, y, v, z and w satisfy the following formulae 0.125<(x+u)/(y+v)?0.

Abstract: A transparent, polycrystalline ceramic is described. The ceramic comprises crystallites of the formula AxCuByDvEzFw, whereby A and C are selected from the group consisting of Li+, Na+, Be2+, Mg2+, Ca2+, Sr2+, Ba2+, Al3+, Ga3+, In3+, C4+, Si4+, Ge4+, Sn2+/4+, Sc3+, Ti4+, Zn2+, Zr4+, Mo6+, Ru4+, Pd2+, Ag2+, Cd2+, Hf4+W4+/6+, Re4+, Os4+, Ir4+,, Pt2+/4+, Hg2+ and mixtures thereof, B and D are selected from the group consisting of Li+, Na+, K+, Mg2+, Al3+, Ga3+, In3+, Si4+, Ge4+, Sn4+, Sc3+, Ti4+, Zn2+, Y3+, Zr4+, Nb3+, Ru3+, Rh3+, La3+, Lu3+, Gd3+ and mixtures thereof, E and F are selected mainly from the group consisting of the divalent anions of S, Se and O and mixtures thereof, x, u, y, v, z and w satisfy the following formulae 0.125<(x+u)/(y+v)?0.55 z+w=4 and at least 95% by weight of the crystallites display symmetric, cubic crystal structures of the spinel type, with the proviso that when A=C=Mg2+ and B=D=Al3+, E and F cannot both be O.

Abstract: An embodiment of the present invention provides an electronically tunable dielectric material, comprising at least one electronically tunable dielectric phase; and at least one compound of low loss complex perovskites, wherein said low loss complex pervoskites comprise two B site cations.

Abstract: A dielectric ceramic composition is disclosed. The dielectric ceramic composition of the present invention comprises BaTiO3 as the main component and one or more subcomponents. The one or more subcomponents include Sc2O3, MgCO3, BaSiO3, MnCO3, La2O3, CO3O4 and NiO. An end product of the present invention may be formed after BaTiO3 and the subcomponents undergo the following steps: (1) Wet mixing using a ball mill (2) Sintering in a reducing atmosphere (3) Annealing. The dielectric ceramic composition of the present invention can satisfy the X8R characteristic of the EIA standard and is compact or dense enough.

Abstract: Disclosed are ceramic-polymer composite consisting of aggregates of dielectric ceramic particles and polymer resin, and a fabrication method thereof, the method including aggregating dielectric ceramic particles to create aggregates, melting polymer resin in a solvent to prepare a polymer solution, dispersing the aggregates in the polymer solution to prepare a mixed solution, and hardening the mixed solution to obtain ceramic-polymer composites.

Abstract: In various embodiments, composite materials containing a ceramic matrix and a carbon nanotube-infused fiber material are described herein. Illustrative ceramic matrices include, for example, binary, ternary and quaternary metal or non-metal borides, oxides, nitrides and carbides. The ceramic matrix can also be a cement. The fiber materials can be continuous or chopped fibers and include, for example, glass fibers, carbon fibers, metal fibers, ceramic fibers, organic fibers, silicon carbide fibers, boron carbide fibers, silicon nitride fibers and aluminum oxide fibers. The composite materials can further include a passivation layer overcoating at least the carbon nanotube-infused fiber material and, optionally, the plurality of carbon nanotubes. The fiber material can be distributed uniformly, non-uniformly or in a gradient manner in the ceramic matrix. Non-uniform distributions may be used to form impart different mechanical, electrical or thermal properties to different regions of the ceramic matrix.

Abstract: The disclosed is a dielectric ceramic composition in which dielectric particles 2a are formed. The dielectric particle 2a has a core 22a comprised of hexagonal barium titanate, and a shell 24a formed on an outer circumference of the core 22a and comprised of cubical or tetragonal barium titanate. The purpose of the present invention is to provide a new dielectric ceramic composition, in which permittivity is hardly lowered due to size effect, a good balance between high insulation resistance and permittivity can easily be achieved, and changes in insulation resistance and specific permittivity due to temperature are small; and an electronic component such as a multilayer ceramic capacitor using the dielectric ceramic composition as its dielectric layer.

Abstract: Dielectric ceramic composition includes a hexagonal type barium titanate as a main component shown by a generic formula (Bai-?M?)A(Ti1-?Mn?)BO3 and having hexagonal structure wherein an effective ionic radius of 12-coordinated “M” is ?20% or more to +20% or less with respect to an effective ionic radius of 12-coordinated Ba2+ and the A, B, ? and ? satisfy relations of 0.900?(A/B)?1.040, 0.003???0.05, 0.03???0.2, and as subcomponents, with respect to the main component, certain contents of alkaline earth oxide such as MgO and the like, Mn3O4 and/or Cr2O3, CuO, Al2O3, rare earth element oxide and glass component including SiO2. According to the present invention, it can be provided the hexagonal type barium titanate powder and dielectric ceramic composition which are preferable for producing electronic components such as a capacitor and the like showing high specific permittivity, having advantageous insulation property and sufficient reliability.

Abstract: Dielectric ceramic composition includes a hexagonal type barium titanate as a main component shown by a generic formula of (Ba1-?M?)A(Ti1-?Mn?)BO3 and having hexagonal structure wherein an effective ionic radius of 12-coordinated “M” is ?20% or more to +20% or less with respect to an effective ionic radius of 12-coordinated Ba2+ and the A, B, ? and ? satisfy relations of 1.000<(A/B)?1.040, 0??<0.003, 0.03???0.2, and as subcomponents, with respect to the main component, certain contents of alkaline earth oxide such as MgO and the like, Mn3O4 and/or Cr2O3, and CuO and Al2O3 and rare earth element oxide and glass component including SiO2. According to the present invention, it can be provided the hexagonal type barium titanate powder and the dielectric ceramic composition which are preferable for producing electronic components such as a capacitor and the like showing comparatively high specific permittivity, having advantageous insulation property and having sufficient reliability.

Abstract: An embodiment of the present invention provides an electronically tunable dielectric material, comprising at least one electronically tunable dielectric phase; and at least one compound of low loss complex perovskites, wherein said low loss complex pervoskites comprise two B site cations.

Abstract: Provided here is a method of producing a monolithic body from a porous matrix, comprising: (i) providing a porous matrix having interstitial spaces and comprising at least a first reactant; (ii) contacting the porous matrix with an infiltrating medium that carries at least a second reactant; (iii) allowing the infiltrating medium to infiltrate at least a portion of the interstitial spaces of the porous matrix under conditions that promote a reaction between the at least first reactant and the at least second reactant to provide at least a first product; and (iv) allowing the at least first product to form and fill at least a portion of the interstitial spaces of the porous matrix, thereby producing a monolithic body, wherein the monolithic body does not comprise barium titanate.

Abstract: A dielectric ceramic containing a BaTiO3 based material as its main constituent, and, as accessory constituents, a rare-earth element R(R is at least one selected from Nd, Eu, Gd, Tb, Dy, Ho, Er, Yb, and Y), M (M is at least one selected from Mg, Mn, Ni, Co, Cu, Al, Mo, W, and V), SiO2, and CaO. Among crystal grains included in this dielectric ceramic, the ratio of the number of crystal grains 11 in which Si is present in solid solution is 5% or more.

Abstract: Wet-chemical methods involving the use of water-soluble hydrolytically stable metal-ion chelate precursors and the use of a nonmetal-ion-containing strong base can be used in a coprecipitation procedure for the preparation of ceramic powders. Examples of the precipitants used include tetraalkylammonium hydroxides. A composition-modified barium titanate is one of the ceramic powders that can be produced. Certain metal-ion chelates can be prepared from 2-hydroxypropanoic acid and ammonium hydroxide.

Abstract: The present invention relates to dielectric ceramics, thin and/or thick layers produced therefrom and a method for the production thereof and the use of the dielectrics and of the thin and/or thick layers.

Abstract: A dielectric ceramic composition has a dielectric constant, K, of at least 200 and a dielectric loss, DF, of 0.0006 or less at 1 MHz. The dielectric ceramic composition may be formed by sintering by firing in air without a controlled atmosphere. The dielectric ceramic composition may have a major component of 92.49 to 97.5 wt. % containing 60.15 to 68.2 wt. % strontium titanate, 11.02 to 23.59 wt. % calcium titanate and 7.11 to 21.32 wt. % barium titanate; and a minor component of 2.50 to 7.51 wt. % containing 1.18 to 3.55 wt. % calcium zirconate, 0.50 to 1.54 wt. % bismuth trioxide, 0.2 to 0.59 wt. % zirconia, 0.02 to 0.07 wt. % manganese dioxide, 0.12 to 0.35 wt. % zinc oxide, 0.12 to 0.35 wt. % lead-free glass frit, 0.24 to 0.71 wt. % kaolin clay and 0.12 to 0.35 wt. % cerium oxide. UHF antennas and monolithic ceramic components may use the dielectric ceramic composition.

Abstract: Dielectric ceramic composition comprising a barium titanate including barium titanate having hexagonal structure as a main component, and an element “M”, an effective ionic radius of the “M” is within ±20% with respect to an effective ionic radius of 12-coordinated Ba2+ or with respect to an effective ionic radius of 6-coordinated Ti4+, an ionic valence of the “M” is larger than that of the Ba or Ti.

Abstract: Composite materials are disclosed having low filler percolation thresholds for filler materials into the composite matrix material along with methods of controlling filler interconnectivity within the composite matrix material. Methods are, thus, disclosed that provide the ability to control the desired properties of the composites. The composites of the present disclosure are characterized by a “pseudo-crystalline” microstructure formed of matrix particles and filler particles where the matrix particles are faceted and substantially retain their individual particle boundaries and where the filler particles are interspersed between the matrix particles at the individual matrix particle boundaries such that the filler particles form a substantially interconnected network that substantially surrounds the individual faceted matrix particles.

Abstract: An antiferroelectric ceramic material that can be formed into a multilayer capacitor is disclosed. The antiferroelectric ceramic material is selected from the Pb(Sn, Zr, Ti)O3 (PSnZT) composition family.

Abstract: A dielectric ceramic which is capable of achieving a laminated ceramic capacitor with high reliability, in particular, favorable lifetime characteristics in a load test, even when a dielectric ceramic layer is reduced in thickness contains one of (Ba, R)(Ti, Mn)O3 and (Ba, Ca, R)(Ti, Mn)O3 (R being La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and/or Y) as a main component, and M (M being Fe, Co, V, W, Cr, Mo, Cu, Al, and/or Mg) and Si as accessory components. The area of a region in which M is present is 10% or less on average of a cross section of each main component grain.

Abstract: A dielectric ceramic which is capable of achieving a laminated ceramic capacitor with high reliability, in particular, favorable lifetime characteristics in a load test, even when a dielectric ceramic layer is reduced in thickness, contains one of Ba(Ti, Mn)O3 and (Ba, Ca)(Ti, Mn)O3 as a main component, and R (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and/or Y), M (Fe, Co, V, W, Cr, Mo, Cu, Al, and/or Mg) and Si as accessory components. The area of a region in which at least one of R and M is present is 10% or less on average on a cross section of each main component grain.

Abstract: The invention provides a method for producing ceramic nanoparticles, which comprises hydrolyzing a ceramic material in a thin film fluid formed between processing surfaces arranged to be opposite to each other so as to be able to approach to and separate from each other, at least one of which rotates relative to the other.

Abstract: A furnace assembly includes first and second sections. The first section includes first and seconds ends, a first joint disposed at the first end, a conical portion at a second end, a first filter disposed between the first and second ends, and a lumen extending through the first section in fluid communication with the first filter. The second section includes first and second ends, a second joint disposed at the first end, an opening disposed at the second end and to receive the conical portion of the first section, a second filter disposed between the first and second ends, and a lumen extending through the second section in fluid communication with the second filter. When engaged, the first and second sections form a chamber between the first and second filters. The chamber is in fluid communication with the respective first ends of the first and second sections.

Abstract: High temperature composites and thermal barrier coatings, and related methods, using anisotropic ceramic materials, such materials as can be modified to reduce substrate thermal mismatch.

Abstract: An antiferroelectric ceramic material that can be formed into a multilayer capacitor is disclosed. The antiferroelectric ceramic material is selected from the Pb(Sn, Zr, Ti)O3 (PSnZT) composition family.

Abstract: There is provided a semiconductor ceramic composition in which a part of Ba of BaTiO3 is substituted with Bi—Na, the semiconductor ceramic composition being capable of arbitrary controlling jump characteristic while maintaining room temperature resistivity low. A semiconductor ceramic composition in which a part of Ba of BaTiO3 is substituted with Bi—Na, the composition having a P-type semiconductor at a grain boundary, is provided, and existence ratio of the P-type semiconductor is changed by calcination conditions, addition amount of additives, sintering conditions, and the like to thereby arbitrary control room temperature resistivity while maintaining jump characteristic high.

Abstract: The invention intends to provide, in BaTiO3 semiconductor porcelain composition, a semiconductor porcelain composition that, without using Pb, can shift the Curie temperature to a positive direction and can significantly reduce the resistivity at room temperature. According to the invention, when Ba is partially substituted by an A1 element (at least one kind of Na, K and Li) and an A2 element (Bi) and Ba is further substituted by a specific amount of a Q element, or when Ba is partially substituted by an A1 element (at least one kind of Na, K and Li) and an A2 element (Bi) and Ti is partially substituted by a specific amount of an M element, the optimal valence control can be applied and whereby the resistivity at room temperature can be significantly reduced. Accordingly, it is optimal for applications in a PTC thermistor, a PTC heater, a PTC switch, a temperature detector and the like, and particularly preferably in an automobile heater.

Abstract: A multi-layer ceramic capacitor has a temperature characteristic satisfying an X8R property and has a high specific resistance under a high temperature circumstance, in which the dielectric ceramic composition forming the dielectric ceramics is expressed by a formula: BaTiO3+aMgO +bMOx+cReO3/2+dSiO2, wherein MgO represents MgO conversion, MOx represents oxide conversion for 1 atom in 1 molecule of at least one metal selected from V, Cr, and Mn, ReO3/2 represents oxide conversion for 1 atom in 1 molecule of at least one rare earth metal selected from Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Y, and SiO2 represents SiO2 conversion, and wherein 0.4?a?3.0 mol, 0.05?b?0.4 mol, 6.0?c?16.5 mol, 3.0?d?5.0 mol, 2.0?c/d?3.3, based on 100 mol of BaTiO3.

Abstract: A method of forming at least partially crystalline ceramic powder includes providing mixed metal oxide particles in an aqueous suspension in a hydrothermal treatment vessel, heating the aqueous suspension at a temperature of at least 150° C. at a treatment pressure of at least 200 psi, and adding an aqueous solution having a temperature of not greater than 100° C. to the hydrothermal treatment vessel while heating and while releasing steam from the hydrothermal treatment vessel.