C04B2235/443

Ceramic material, varistor, and method for producing the ceramic material and the varistor

In an embodiment a ceramic material includes ZnO as main constituent, Y as a first additive, second additives including at least one compound containing a metal element, wherein the metal element is selected from the group consisting of Bi, Cr, Co, Mn, Ni and Sb, Si.sup.4+ as a first dopant and second dopants having at least one compound containing a metal cation from Al.sup.3+, B.sup.3+, or Ba.sup.2+, wherein a corresponds to a molar proportion of Bi calculated as Bi.sub.2O.sub.3, b corresponds to a molar proportion of Y calculated as Y.sub.2O.sub.3, c corresponds to a molar proportion of Al calculated as Al.sub.2O.sub.3, d corresponds to a molar proportion of Ba calculated as BaO, e corresponds to a molar proportion of B calculated as B.sub.2O.sub.3, f corresponds to a molar proportion of Si calculated as SiO.sub.2, g corresponds to a molar proportion of Ni calculated as NiO, h corresponds to a molar proportion of Co calculated as Co.sub.3O.sub.4, i corresponds to a molar proportion of Cr calculated as Cr.sub.2O.sub.3, j corresponds to a molar proportion of Sb calculated as Sb.sub.2O.sub.3, and k corresponds to a molar proportion of Mn calculated as Mn.sub.3O.sub.4.

FRIABLE CERAMIC-BONDED DIAMOND COMPOSITE PARTICLES AND METHODS TO PRODUCE SAME
20180009716 · 2018-01-11 ·

Ceramic-bonded diamond composite particle includes a plurality of diamond grains and silicon carbide reaction bonded to the diamond grains having a composition of 60-90 wt. % diamond, 10-40 wt. % silicon carbide, ≦2 wt. % silicon. Particles are formed by processes that forms granules in a pre-consolidation process, forms a densified compact including ceramic-bonded diamond composite material in a consolidation process or forms ceramic-bonded diamond composite material directly, and a post-consolidation process in which the densified compact or ceramic-bonded diamond composite material is mechanically broken to form a plurality of the particles. Inert or active material can be incorporated into the densified compact or coated on granules to reduce the number and extent of diamond to silicon carbide bonding occurring in the consolidation process and make the ceramic-bonded diamond composite material more friable and easily breakable into composite particles.

METHOD OF PRODUCING DIELECTRIC MATERIAL
20180009714 · 2018-01-11 ·

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.

ALUMINIUM AND ZIRCONIUM-BASED MIXED OXIDE

The present invention relates to a mixed oxide of aluminium, of zirconium, of cerium, of lanthanum and optionally of at least one rare-earth metal other than cerium and lanthanum that makes it possible to repair a catalyst that retains, after severe ageing, a good thermal stability and a good catalytic activity. The invention also relates to the process for preparing this mixed oxide and also to a process for treating exhaust gases from internal combustion engines using a catalyst prepared from this mixed oxide.

Rapid pyrolysis to form super ionic conducting lithium garnets

A method of preparing a lithium-ion conducting garnet via low-temperature solid-state synthesis is disclosed. The lithium-ion conducting garnet comprises a substantially phase pure aluminum-doped cubic lithium lanthanum zirconate (Li.sub.7La.sub.3Zr.sub.2O.sub.14). The method includes preparing nanoparticles comprising lanthanum zirconate (La.sub.2Zr.sub.2O.sub.7-np) via pyrolysis-mediated reaction of lanthanum nitrate (La(NO.sub.3).sub.3) and zirconium nitrate (Zr(NO.sub.3).sub.4). The method also includes pyrolyzing a solid-state mixture comprising the La.sub.2Zr.sub.2O.sub.7-np, lithium nitrate (LiNO.sub.3), and aluminum nitrate (Al(NO.sub.3).sub.3) to give the Li.sub.7La.sub.3Zr.sub.2O.sub.14 and thereby prepare the lithium-ion conducting garnet. A lithium-ion conducting garnet prepared via the method is also disclosed.

CERAMIC POWDER MATERIAL, METHOD FOR PRODUCING CERAMIC POWDER MATERIAL, MOLDED BODY, SINTERED BODY, AND BATTERY
20220388911 · 2022-12-08 ·

A ceramic powder material containing a garnet-type compound containing Li, wherein the ceramic powder material has a pore volume of 0.4 mL/g or more and 1.0 mL/g or less.

Fe3C-DOPED GRADED POROUS CARBON POLYMER POTASSIUM ION ANODE MATERIAL, PREPARATION METHOD AND APPLICATION THEREOF
20220376230 · 2022-11-24 ·

The disclosure relates to a Fe.sub.3C-doped graded porous carbon polymer potassium ion anode material as well as a preparation method and application thereof. In the method, previously prepared Fe.sub.2O.sub.3 is added into phenylamine, pyrrole, thiophene and cellulose acetate solutions, the above mixture is evaporated at the low temperature of 65-100° C., and then the evaporated product is calcinated to obtain a potassium battery anode material. This material consists of carbon nano sheets having different pore diameters, and has a graded porous structure of micropores, mesopores and macropores. Physical characterization results show that this material has the characteristics of large interlayer spacing, high specific surface area, rich defects and the like; electrochemical testing results show that this material has high reversible capacity and excellent cycle stability and rate performance.

Method of depositing nanoscale materials within a nanofiber network and networked nanofibers with coating
11489166 · 2022-11-01 · ·

Provided herein is a method of making a conductive network by combining uncoated carbon nanotubes and carbon nanotubes coated with an electroactive substance to create an electrically conductive network; and redistributing at least a portion of the electroactive substance. Also provided herein is an electrically conductive network with an active material coating; first carbon nanotubes coated with the active material coating; and second carbon nanotubes partially coated with the active material coating, wherein at least a portion of the surfaces of the second carbon nanotubes directly contact surfaces of other second carbon nanotubes without the active material coating between these second carbon nanotubes, and wherein the first carbon nanotubes and the second carbon nanotubes are entangled to form an electrically conductive network.

FUNCTIONALIZED CERAMIC ARTICLE

The present invention relates to a method for additive manufacturing of a position sensitive colored ceramic article comprising: a) providing at least one flowable ceramic component; b) forming a green body by sequential deposition of the ceramic component provided in step a) and optionally a support material not intended to be part of the final article; c) position sensitive application of a coloring substance in a solvent to at least a part of the surface of the green body formed in step b), wherein the coloring substance is applied simultaneously to the sequential deposition; d) heat treatment or curing of at least a part of the green body surface obtained in step c); wherein the method steps a)-d) are at least performed once; e) optionally removing the support material from the green body; and f) sintering the green body to obtain the ceramic article; wherein the coloring substance is a dyestuff according to ISO 18451-1:2019(E). In addition, the present invention relates to a system adapted to perform the method and a control data set configured, when implemented in an additive manufacturing system, to cause the system to execute the steps of the inventive method.

SOLID ELECTROLYTE CERAMIC MATERIAL AND SOLID-STATE BATTERY
20230076099 · 2023-03-09 ·

A solid electrolyte ceramic material that includes sintered solid electrolyte particles containing, at least, lithium (Li), lanthanum (La), bismuth (Bi), and oxygen (O), wherein the Bi is at a higher concentration in a vicinity of a grain boundary of the sintered solid electrolyte particles than in a grain interior of the sintered solid electrolyte particles.