C04B2237/346

DIELECTRIC COMPOSITION AND MULTILAYER CERAMIC CAPACITOR
20230053290 · 2023-02-16 ·

A dielectric composition that contains a first complex oxide represented by (Bi.sub.xNa.sub.1−x)TiO.sub.3—CaTiO.sub.3 and having a perovskite structure as a main component; and at least one second complex oxide having a perovskite structure selected from the group consisting of BaZrO.sub.3, SrZrO.sub.3, CaZrO.sub.3, NaNbO.sub.3, and NaTaO.sub.3 as an auxiliary component. A tolerance factor t when the at least one second complex oxide is BaZrO.sub.3, NaNbO.sub.3, or NaTaO.sub.3 is 0.9016≤t≤0.9035, a tolerance factor t when the at least one second complex oxide is SrZrO.sub.3 is 0.9005≤t≤0.9025, and a tolerance factor t when the at least one second complex oxide is CaZrO.sub.3 is 0.9000 t<0.9020.

Multilayer ceramic capacitor and manufacturing method for same

A multilayer ceramic capacitor (10) has a laminate body (20) constituted by dielectric layers (17) and internal electrode layers (18) stacked alternately. The dielectric layers (17) contain (Ba.sub.(1-x-y)Ca.sub.xSr.sub.y).sub.m(Ti.sub.(1-z)Zr.sub.z)O.sub.3, where 0.03≤x≤0.16, 0≤y≤0.02, 0<z≤0.02, 0.99≤m≤1.02, as a primary component, and an R oxide (R is a rare earth element) by 1.0 to 4.0 mol in equivalent element, an Mg compound by 0.2 to 2.5 mol in equivalent element, an Mn compound by 0.1 to 1.0 mol in equivalent element, a Zr compound by 0.1 to 2.0 mol in equivalent element, a V compound by 0.05 to 0.3 mol in equivalent element, and an Si compound by 0.2 to 5.0 mol in equivalent element, per 100 mol of the primary component. The multilayer ceramic capacitor can offer excellent DC bias properties and ensure high reliability.

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, the multilayer body including an electrode facing portion in which the inner electrode layers are laminated to face each other with the dielectric layers interposed therebetween. The multilayer body has a thickness of at least about 1.5 mm in a lamination direction, a length of at least about 3.0 mm, and a width of at least about 1.5 mm. Each of the dielectric layers includes Ba, Ti, and Cl. A Cl concentration C.sub.1 in the entire electrode facing portion satisfies about 10 wtppm<C.sub.1<about 50 wtppm. On an imaginary central axis line, a Cl concentration C.sub.2 in a central portion of the electrode facing portion and a Cl concentration C.sub.3 in both end portions of the electrode facing portion satisfy about 0.5C.sub.2≤C.sub.3<C.sub.2.

Ceramic electronic device and manufacturing method of the same

A ceramic electronic device includes a multilayer chip in which a plurality of dielectric layers of which a main component is ceramic and a plurality of internal electrode layers are stacked. The plurality of internal electrode layers include Ni, Sn and Au.

Three-dimensional shaped article production method

A three-dimensional shaped article production method for producing a three-dimensional shaped article by stacking layers to form a stacked body includes a first layer formation step of forming a first layer on a support by supplying a first composition containing first particles and a binder, a second layer formation step of forming a second layer composed of one layer or a plurality of layers on the first layer by supplying a second composition containing second particles and a binder, and a separation step of separating the second layer from the support through the first layer, wherein after the separation step, a sintering step of sintering the second layer is performed.

Dielectric ceramic composition and ceramic electronic component
11702368 · 2023-07-18 · ·

A dielectric ceramic composition including a first component and a second component. The first component comprises an oxide of Ca of 0.00 mol % to 35.85 mol % an oxide of Sr of 0.00 mol % to 47.12 mol %, an oxide of Ba of 0.00 mol % to 51.22 mol %, an oxide of Ti of 0.00 mol % to 17.36 mol %, an oxide of Zr of 0.00 mol % to 17.36 mol %, an oxide of Sn of 0.00 mol % to 2.60 mol %, an oxide of Nb of 0.00 mol % to 35.32 mol %, an oxide of Ta of 0.00 mol % to 35.32 mol %, and an oxide of V of 0.00 mol % to 2.65 mol %. The second component includes (by mass) at least (a) an oxide of Mn of 0.005% to 3.500% and (b) one or both of an oxide of Cu of 0.080% to 20.000% and an oxide of Ru of 0.300% to 45.000%.

COMPOSITE FIBER
20230017369 · 2023-01-19 ·

A composite fiber composed of at least a metal sintered body and a ceramic sintered body. In the composite fiber, the metal sintered body and the ceramic sintered body are adjacent to each other. The composite fiber having the metal sintered body and the ceramic sintered body can have a tensile strength of 5 kgf/mm.sup.2 or more.

MATCHED CHEMISTRY COMPONENT BODY AND COATING FOR SEMICONDUCTOR PROCESSING CHAMBER
20230223240 · 2023-07-13 ·

A component for use in a semiconductor processing chamber is provided. A component body of a dielectric material has a semiconductor processing facing surface. A coating of a dielectric material is on at least the semiconductor processing facing surface, wherein the dielectric material of the component body has a same stoichiometry as the dielectric material of the coating.

Ceramic electronic component and method of manufacturing the same

A ceramic electronic component includes a multilayer chip having a substantially rectangular parallelepiped shape and including a first multilayer structure and a second multilayer structure disposed on each of top and bottom faces of the first multilayer structure, the first multilayer structure including first ceramic dielectric layers having a first width in a first direction in which side faces of the multilayer chip are opposite to each other, the second multilayer structure including second internal electrode layers having a second width less than the first width in the first direction, and a pair of external electrodes formed from the respective two edge faces to at least one of side faces of the multilayer chip, wherein main components of the first and second internal electrode layers differ from a main component of the external electrodes.

METHOD FOR MANUFACTURING CERAMIC SUSCEPTOR
20230212083 · 2023-07-06 ·

Disclosed is a method for manufacturing a ceramic susceptor, the method including: preparing ceramic sheets; preparing a lamination structure of a molded body, in which the ceramic sheets are laminated and a conductive metal layer for electrodes is disposed between the ceramic sheet laminated products; and sintering the lamination structure of the molded body, wherein the preparing of the ceramic sheets includes: obtaining a vitrified first additive powder by heat-treating a slurry containing MgO, SiO.sub.2, and CaO; preparing a slurry by mixing an Al.sub.2O.sub.3 powder with the first additive powder, a second additive powder containing a MgO powder, and a third additive powder containing a Y.sub.2O.sub.3 powder; and forming the ceramic sheets by tape casting the slurry.