Abstract: A precursor of an alumina sintered compact including aluminum, yttrium, and at least one metal selected from iron, zinc, cobalt, manganese, copper, niobium, antimony, tungsten, silver, and gallium. The aluminum content is 98.0% by mass or more as an oxide (Al2O3) in 100% by mass of the precursor of an alumina sintered compact; the yttrium content is 0.01 to 1.35 parts by mass as an oxide (Y2O3) based on 100 parts by mass of the content of the aluminum as an oxide; the total content of the metals selected from the foregoing group is 0.02 to 1.55 parts by mass as an oxide based on 100 parts by mass of the content of aluminum as an oxide; and the aluminum is contained as ?-alumina. Also disclosed is an alumina sintered compact, and a method for producing an alumina sintered compact and for producing abrasive grains.
Abstract: The invention is related to a nonaqueous secondary battery electrode having an electrode active material layer with little crack and high peel strength to a current collector, and can reduce the internal resistance of the battery; and an electrode slurry therefor, and a nonaqueous secondary battery. The electrode active material layer of the nonaqueous secondary battery contains an electrode active material (A), a copolymer (P), a nonionic surfactant (B), and a cellulose derivative (C). A content of the nonionic surfactant (B) to 100 parts by mass of the copolymer (P) is 5.0 to 350 parts by mass, and a content of the cellulose derivative (C) is 10 to 350 parts by mass. The copolymer (P) contains a structural unit (p1) derived from a (meth)acrylic acid salt of 50 to 99% by mass and a structural unit (p2) derived from a compound represented by general formula (1) of 0.50 to 30% by mass.
October 22, 2020
October 19, 2023
SHOWA DENKO K.K.
Yuta KAWAHARA, Tomonori KURATA, Mitsuru HANASAKI
Abstract: The present invention relates to a method for bonding a metal and a resin, including bonding a metal and a resin by high-frequency induction welding via an intermediate resin layer which causes a chemical reaction.
Abstract: There is provided a halon purification method capable of simply, safely, and efficiently removing mixed bromine molecules to obtain high purity halon. The halon purification method is a method for removing bromine molecules from crude halon containing halon and the bromine molecules, and the method includes: a contact step of bringing the crude halon into contact with an absorbing liquid containing an aqueous solution containing metal iodide to obtain a mixed liquid containing the crude halon and the absorbing liquid; and a separation step of separating the halon from the mixed liquid to obtain the halon and the absorbing liquid having absorbed the bromine molecules.
Abstract: Provided is a method for improving the yield of a harvested product of at least one plant selected from the group consisting of plants belonging to the families Solanaceae, Cucurbitaceae, Poaceae and Fabaceae. A method for cultivating at least one plant selected from the group consisting of plants belonging to the families Solanaceae, Cucurbitaceae, Poaceae and Fabaceae comprises applying a plant-vitalizing agent comprising an exogenous elicitor and an endogenous elicitor to a young seedling of the plant at least one time.
Abstract: A negative electrode material for lithium ion secondary batteries, including composite material particles containing nanosilicon particles having a 50% particle diameter (Dn50) of 5 to 100 nm in a number-based cumulative particle size distribution of primary particles, graphite particles and an amorphous carbon material; the composite material particles containing the nanosilicon particles at a content of 30 to 60 mass % or less, and the amorphous carbon material at a content of 30 to 60 mass % or less; the composite material particles having a 90% particle diameter (DV90) in the volume-based cumulative particle size distribution of 10.0 to 40.0 ?m, a BET specific surface area of 1.0 to 5.0 m2/g, and an exothermic peak temperature in DTA measurement of 830° C. to 950° C. Also disclosed is a paste for negative electrodes, a negative electrode sheet, a lithium ion secondary battery and a method for manufacturing the negative electrode material.
September 18, 2018
Date of Patent:
October 3, 2023
Showa Denko K.K., Umicore
Yasunari Otsuka, Nobuaki Ishii, Nicolas Marx, Stijn Put
Abstract: A solid electrolyte material, a solid electrolyte, a method for producing these, and an all-solid-state battery. The solid electrolyte material includes a lithium ion conductive compound (a) including lithium, tantalum, phosphorus, and oxygen as constituent elements, and at least one compound (b) selected from a boron compound, a bismuth compound, and a phosphorus compound, wherein the compound (b) is a compound different from the compound (a).
Abstract: An etching method including an etching step of bringing, in the presence of plasma, an etching gas containing a fluorine compound with three or fewer carbon atoms having at least one bond of a carbon-oxygen double bond and an ether bond in a molecule into contact with a target etching member having an etching target and a non-etching target, and selectively etching the etching target in comparison with the non-etching target. A concentration of the fluorine compound in the etching gas is 0.5 vol% or more to 40 vol% or less, and the etching target has silicon nitride.
Abstract: A solid electrolyte material, a solid electrolyte, a method for producing the solid electrolyte, and an all-solid-state battery. The solid electrolyte material includes lithium, tantalum, phosphorus, and oxygen as constituent elements, and a temperature of an exothermic peak in a differential thermal analysis (DTA) curve of the solid electrolyte material is in the range of 500 to 850° C.
Abstract: A solid electrolyte material, a solid electrolyte, a method for producing the solid electrolyte, and an all-solid-state battery. The solid electrolyte material includes lithium, tantalum, phosphorus, and oxygen as constituent elements and includes at least one element selected from boron, niobium, silicon, and bismuth as a constituent element, and is amorphous.
Abstract: A method of producing an Al—Mg—Si-based aluminum alloy forged product, includes a solution heat treatment step of performing a solution heat treatment for heating the forged product obtained in the forging step at a temperature rising rate of 5.0° C./min or more from 20° C. to 500° C. and holding the forged product at 530° C. to 560° C. for 0.3 hours to 3 hours, a quench treatment step of quenching the forged product in a water tank by bringing an entire surface of the forged product into contact with quenching water within 5 seconds to 60 seconds after the solution heat treatment step for more than 5 minutes and not more than 40 minutes, and an aging treatment step of performing an aging treatment by heating the forged product after the quench treatment step at a temperature of 180° C. to 220° C. for 0.5 hours to 1.5 hours.
Abstract: Provided is a method for improving the cotton crop yield. This method for cultivating cotton comprises treating seedlings at least once with a plant activator containing an exogenous elicitor and an endogenous elicitor.
Abstract: According to the present invention, there is provided a SiC epitaxial wafer including: a 4H-SiC single crystal substrate which has a surface with an off angle with respect to a c-plane as a main surface and a bevel part on a peripheral part; and a SiC epitaxial layer having a film thickness of 20 ?m or more, which is formed on the 4H-SiC single crystal substrate, in which a density of an interface dislocation extending from an outer peripheral edge of the SiC epitaxial layer is 10 lines/cm or less.
Abstract: Sensitivity of a magnetic sensor using the magnetic impedance effect is improved. A magnetic sensor includes: a non-magnetic substrate; a sensitive element provided on the substrate, including a soft magnetic material, having a longitudinal direction and a short direction, provided with uniaxial magnetic anisotropy in a direction intersecting the longitudinal direction, and sensing a magnetic field by a magnetic impedance effect; and a protrusion part including a soft magnetic material and protruding from an end portion in the longitudinal direction of the sensitive element.
Abstract: A fluorine-containing ether compound represented by the following formula (1) is provided. (In the formula (1), R1 is an alkoxy group having 1 to 10 carbon atoms, R2 is a perfluoropolyether chain, R3 is —OCH2CH(OH)CH2O(CH2)mOH (m in the formula is an integer of 2 to 4).
Abstract: A liquid dispersion composition for solid electrolytic capacitor production, containing a conjugated conductive polymer prepared by polymerizing a monomer compound in a dispersion medium containing seed particles with protective colloid formed of a polyanion or in a dispersion medium containing a polyanion, and a compound (a) represented by a general formula (1), where R1 to R6 and k are as defined in the description; and a method for producing a solid electrolytic capacitor, including a step of adhering the composition to a porous anode body made of a valve action metal having a dielectric coating film on the surface thereof, and a step of removing the dispersion medium from the liquid dispersion composition having adhered to the porous anode body to form a solid electrolyte layer
Abstract: A magnetic sensor 10 includes: a non-magnetic substrate 11; a sensitive circuit 12 provided on a surface of the substrate 11 and including a sensitive part 121 sensing a magnetic field by a magnetic impedance effect; a terminal part 13a and a terminal part 13b connected to respective both end portions of the sensitive circuit 12; and a conductive returning member with one end portion being connected to the terminal part 13a, the returning member returning back toward the terminal part 13b.
Abstract: A method for producing a highly polymerizable N-vinyl carboxylic acid amide monomer includes (A) melting a crude N-vinyl carboxylic acid amide monomer comprising 50 to 88 mass % of an N-vinyl carboxylic acid amide monomer by heating, followed by cooling for precipitation, and subjecting precipitated N-vinyl carboxylic acid amide monomer crystals to solid-liquid separation (step (A)), and (B) further dissolving the N-vinyl carboxylic acid amide monomer crystals separated in step (A) in a mixed solvent of acetonitrile and an aliphatic hydrocarbon having 6 to 7 carbon atoms, then performing crystallization, performing solid-liquid separation, and recovering an N-vinyl carboxylic acid amide monomer purified product (step (B)), wherein a mass ratio of acetonitrile/N-vinyl carboxylic acid amide monomer crystal in step (B) is 0.01 to 0.5, and a mass ratio of aliphatic hydrocarbon having 6 to 7 carbon atoms/N-vinyl carboxylic acid amide monomer crystal in step (B) is 0.5 to 3.0.
Abstract: The sensitivity of a magnetic sensor using a sensitive element sensing a magnetic field by the magnetic impedance effect is increased. The magnetic sensor includes: a sensitive element sensing a magnetic field by a magnetic impedance effect; and a focusing member provided to face the sensitive element, configured with a soft magnetic material, and focusing magnetic force lines from outside onto the sensitive element.