C04B35/62815

PROCESS FOR RAPID PROCESSING OF SiC AND GRAPHITIC MATRIX TRISO-BEARING PEBBLE FUELS
20210210235 · 2021-07-08 · ·

A method for producing microencapsulated fuel pebble fuel more rapidly and with a matrix that engenders added safety attributes. The method includes coating fuel particles with ceramic powder; placing the coated fuel particles in a first die; applying a first current and a first pressure to the first die so as to form a fuel pebble by direct current sintering. The method may further include removing the fuel pebble from the first die and placing the fuel pebble within a bed of non-fueled matrix ceramic in a second die; and applying a second current and a second pressure to the second die so as to form a composite fuel pebble.

CERAMIC ELECTRONIC COMPONENT AND METHOD OF MANUFACTURING THE SAME

A ceramic electronic component includes a body including a dielectric layer and an internal electrode, and an external electrode disposed on the body and connected to the internal electrode. The dielectric layer includes a plurality of dielectric grains, and at least one of the plurality of dielectric grains has a core-dual shell structure having a core and a dual shell. The dual shell includes a first shell surrounding at least a portion of the core, and a second shell surrounding at least a portion of the first shell, and a concentration of a rare earth element included in the second shell is more than 1.3 times to less than 3.8 times a concentration of a rare earth element included in the first shell.

Process for rapid processing of SiC and graphitic matrix TRISO-bearing pebble fuels
10878971 · 2020-12-29 · ·

A method for producing microencapsulated fuel pebble fuel more rapidly and with a matrix that engenders added safety attributes. The method includes coating fuel particles with ceramic powder; placing the coated fuel particles in a first die; applying a first current and a first pressure to the first die so as to form a fuel pebble by direct current sintering. The method may further include removing the fuel pebble from the first die and placing the fuel pebble within a bed of non-fueled matrix ceramic in a second die; and applying a second current and a second pressure to the second die so as to form a composite fuel pebble.

Multilayer ceramic capacitor with dielectric layers including dielectric grains having a core-shell structure
10748709 · 2020-08-18 · ·

A multilayer ceramic capacitor includes: a ceramic body including dielectric layers and first and second internal electrodes disposed to face each other with each of the dielectric layers interposed therebetween; and first and second external electrodes disposed on external surfaces of the ceramic body and electrically connected to the first and second internal electrode, respectively, wherein the dielectric layer includes dielectric grains having a core-shell structure including a core and a shell, and a domain wall is disposed in the shell.

METHODS OF FABRICATING OXIDE/METAL COMPOSITES AND COMPONENTS PRODUCED THEREBY
20200255342 · 2020-08-13 ·

Methods for producing oxide/metal composite components for use in high temperature systems, and components produced thereby. The methods use a fluid reactant and a porous preform that contains a solid oxide reactant. The fluid reactant contains yttrium as a displacing metal and the solid oxide reactant of the preform contains niobium oxide, of which niobium cations are displaceable species. The preform is infiltrated with the fluid reactant to react its yttrium with the niobium oxide of the solid oxide reactant and produce an yttria/niobium composite component, during which yttrium at least partially replaces the niobium cations of the solid oxide reactant to produce yttria and niobium metal, which together define a reaction product. The pore volume of the preform is at least partially filled by the reaction product, whose volume is greater than the volume lost by the solid oxide reactant as a result of reacting yttrium and niobium oxide.

Aerodynamic or Hydrodynamic Blade made of Layered Material

A blade made of layered material, such as composite material, configured for exposure to a fluid flow, comprises skins (1, 2) defined between a leading edge (3) and a trailing edge (4) which skins in cross-section form a flow profile. The layered material may consist of several layers of fiber material (5, 5, . . . ) impregnated with a matrix material, wherein layers of fiber material each comprise a respective body portion (6, 6, . . . , 13) between and transverse to the skins and each at least a respective skin portion (7, 7, . . . ; 8, 8, . . . ) that forms part of the skins. The said skin portions all extend from the related body portion in the direction of the trailing edge. Of said skin portions at least two consecutive skin portions of the one skin overlap and/or two consecutive skin portions of the other skin overlap each other.

METHOD OF MANUFACTURING MULTILAYER CERAMIC ELECTRONIC COMPONENT AND MULTILAYER CERAMIC ELECTRONIC COMPONENT
20200111616 · 2020-04-09 ·

A method of manufacturing a multilayer ceramic electronic component includes: preparing a dielectric magnetic composition including base material powder particles including BaTi.sub.2O.sub.5 or (Ba.sub.(1-x)Ca.sub.x)Ti.sub.2O.sub.5 (0x<0.1), the base material powder particles having surfaces coated with one or more of Mg, Mn, V, Ba, Si, Al and a rare earth metal; preparing ceramic green sheets using dielectric slurry including the dielectric magnetic composition; applying an internal electrode paste to the ceramic green sheets; preparing a green sheet laminate by stacking the ceramic green sheets to which the internal electrode paste is applied; and preparing a ceramic body including dielectric layers and a plurality of first and second internal electrodes arranged to face each other with each of the dielectric layers interposed therebetween by sintering the green sheet laminate.

Composite abrasive with hard core and soft shell, manufacturing method and application method

Disclosed is a composite abrasive with hard core and soft shell, comprising hard abrasive core with grain diameter in a range of 0.11 m and a soft oxide shell with thickness in a range of 5100 nm, the grain size of the oxide of the soft oxide shell is in a range of 520 nm, the composite abrasive is obtained from aqueous solution of oxide inorganic salt precursor and the hard abrasive by dispersing, constant temperature reflux hydrolyzing, solid-liquid separating, washing and drying. The component abrasive with hard core and soft shell of the present invention can improve the manufacturing efficiency and the surface quality during the ultraprecise manufacturing of the sapphire substrate.

MULTILAYER CERAMIC CAPACITOR WITH DIELECTRIC LAYERS INCLUDING DIELECTRIC GRAINS HAVING A CORE-SHELL STRUCTURE
20200051742 · 2020-02-13 ·

A multilayer ceramic capacitor includes: a ceramic body including dielectric layers and first and second internal electrodes disposed to face each other with each of the dielectric layers interposed therebetween; and first and second external electrodes disposed on external surfaces of the ceramic body and electrically connected to the first and second internal electrode, respectively, wherein the dielectric layer includes dielectric grains having a core-shell structure including a core and a shell, and a domain wall is disposed in the shell.

PERFORMANCE OF TECHNICAL CERAMICS

Disclosed herein are a ceramic particle comprising a ceramic core substrate and a conformal coating of a sintering aid film on a surface of the core substrate, wherein the conformal coating includes a plurality of distributed islands of the sintering aid film across the surface of the core substrate; methods for producing the ceramic particle by ALD or MLD; and methods of using the coated ceramic particles in additive manufacturing or in solid oxide fuel cells. In one example, the film may have a thickness of less than three nanometers. The disclosed ceramic particle may be non-reactive with water.