摘要:
A composition comprising finely divided particles of modified barium titanate; and an admixture of calcium, titanium and manganese; the modified barium titanate particles containing Zr, Zn and Nb homogeneously distributed on an atomic scale throughout the particles according to the formula:BaTi.sub.1-(x+3y/2) (Zr.sub.x Zn.sub.y/2 Nb.sub.y) O.sub.3wherein x=0.01-0.20 and y=0.005-0.075. This composition forms a dielectric layer having a Curie Temperature below 25.degree. C., a dielectric constant of at least 10,000 and grain size of 5 microns or less and is useful in multilayer electrical devices such as circuits and capacitors.
摘要:
A composition consisting essentially of 60.0-70.0 mol % TiO.sub.2, 14.3-20.0 mol % Nd.sub.2 O.sub.3, 11.0-16.7 mol % BaO, 1.0-8.0 mol % ZrO.sub.2 and 0.05-0.30 mol % CeO.sub.2. This composition is useful for forming densified ceramic dielectric bodies having a dielectric constant of at least 65 and which meet COG specifications, and multilayer capacitors that contain such dielectric bodies.
摘要翻译:基本上由60.0-70.0mol%TiO 2,14.3-20.0mol%Nd 2 O 3,11.0-16.7mol%BaO,1.0-8.0mol%ZrO 2和0.05-0.30mol%CeO 2组成的组合物。 该组合物可用于形成具有至少65的介电常数且满足COG规格的致密陶瓷介电体,以及含有这种介电体的多层电容器。
摘要:
A composition consisting essentially of 60.0-70.0 mol % TiO.sub.2, 14.3-20.0 mol % Nd.sub.2 O.sub.3, 11.0-16.7 mol % BaO, 1.0-8.0 mol % ZrO.sub.2 and 0.05-0.30 mol % CeO.sub.2. This composition is useful for forming densified ceramic dielectric bodies having a dielectric constant of at least 65 and which meet COG specifications, and multilayer capacitors that contain such dielectric bodies.
摘要翻译:基本上由60.0-70.0mol%TiO 2,14.3-20.0mol%Nd 2 O 3,11.0-16.7mol%BaO,1.0-8.0mol%ZrO 2和0.05-0.30mol%CeO 2组成的组合物。 该组合物可用于形成具有至少65的介电常数且满足COG规格的致密陶瓷介电体,以及含有这种介电体的多层电容器。
摘要:
An improved ceramic dielectric composition comprising a chemically homogeneous distribution of a mixture of additives on the surface of particles of ceramic powder, and to a method for enhancing the dielectric properties and sinterability of such compositions at low firing temperatures.
摘要:
A ceramic slurry or slip includes ceramic powder, an organic plasticizer and a resin binder combined in an aromatic hydrocarbon solvent and has a viscosity that is independent of shear rate. Monolithic ceramic capacitors having fewer pin holes are made by forming a falling sheet of this Newtonian slip, and repeatedly interrupting the falling curtain by passing a carrier through it to form layers of green ceramic. An electroding film is deposited on each green ceramic layer to form buried electrodes. The Newtonian slip is advantageously self leveling and contains relatively few pin holes that degrade capacitor performance.
摘要:
A donor modified strontium titanate formulated to become conductive when sintered in air, is further modified with a minute quantity of manganese and sintered to maturity in a nitrogen atmosphere. A paste including silver particles, and oxides of bismuth and copper is applied to two major portions of the body. The coated body is heated at about 920.degree. C. to oxidize the grain boundaries and to form silver electrodes tightly adhered to the body.
摘要:
A method of making dense dielectrics layers via chemical solution deposition by adding inorganic glass fluxed material to high dielectric constant compositions, depositing the resultant mixture onto a substrate and annealing the substrate at temperatures between the softening point of the inorganic glass flux and the melting point of the substrate. A method of making a capacitor comprising a dense dielectric layer.
摘要:
A dielectric ceramic composition in a multilayer ceramic capacitor with a composition of formula: {[(CaO)t(SrO)1-t]m[(ZrO2)v(TiO2)1-v]}1-s-xAsEx wherein: A is a transition metal oxide; E is an oxide of an element selected from the group consisting of Ge, Si, Ga and combinations thereof; m is 0.98 to 1.02; t is 0.50 to 0.90; v is 0.8 to 1.0; s and x are selected from the group consisting of: a) 0≦x≦0.08, 0.0001≦s≦0.043 and x≧1.86s; and b) 0≦x≦0.0533, 0.0001≦s≦0.08 and x≦0.667s.
摘要翻译:一种具有下列组成的多层陶瓷电容器中的介电陶瓷组合物:<?in-line-formula description =“In-line Formulas”end =“lead”?> {[(CaO)t(SrO)1-t] m [(ZrO 2)v(TiO 2)1-v]} 1-s-x AsEx <?in-line-formula description =“In-line Formulas”end =“tail”?>其中:A是过渡金属氧化物; E是选自Ge,Si,Ga及其组合的元素的氧化物; m为0.98〜1.02; t为0.50〜0.90; v为0.8〜1.0; s和x选自:a)0 <= x <= 0.08,0 0.0001 <= s <= 0.043和x> = 1.86s; 和b)0 <= x <= 0.0533,0.0001 <= s <= 0.08和x <= 0.667s。
摘要:
The present invention is directed to an article comprising a dielectric layer formed from any solution composition that can form barium titanate during firing and containing manganese in an amount between 0.002 and 0.05 atom percent of the solution composition, wherein the dielectric layer has been formed on metal foil and fired in a reducing atmosphere.
摘要:
A ceramic capacitor is disclosed. The capacitor comprises a plurality of base metal inner electrode layers, a plurality of ceramic dielectric layers between the inner electrode layers, and external electrodes in electrical conductivity with the inner electrode layers. At least one secondary component having an intentionally added chemistry is dispersed in the inner electrode layers and/or the dielectric layers. The chemistry evolves an oxidizing species in a controlled manner, such that it offsets localized highly reducing atmospheres that are present when the capacitor is fired in a reducing atmosphere, thereby promoting enhanced electrode connectivity in thin layer base metal multilayer capacitors.