Time filter

Source Type

Patent
Sumitomo Metal Mining Co. | Date: 2017-05-10

Provided is a sputtering target having extremely low occurrence of arcing or nodules, and a method for manufacturing such a sputtering target. A flat plate-shaped or cylindrical target material (3, 13) is obtained by processing a material composed of an oxide sintered body. In doing so, a grindstone having a specified grade is used to perform rough grinding of a surface of the material that will become a sputtering surface (5, 15) one or more times in accordance to the grade of the grindstone, after which zero grinding is performed one or more times so that the surface roughness of the sputtering surface (5, 15) has an arithmetic mean roughness Ra of 0.9 m or more, a maximum height Rz of 10.0 m or less, and Rz_(JIS) roughness of 7.0 m or less. A sputtering target (1, 11) is obtained by bonding the obtained target material (3, 13) to a backing body (2, 12) by way of a bonding layer (4, 14).


Patent
Sumitomo Metal Mining Co. | Date: 2017-01-24

A solar-radiation-shielding material for vehicle windows reduces the visible light transmittance, and reduces the value of solar radiation transmittance/visible light transmittance. The visible light transmittance of the solar-radiation-shielding material is in the range of 5%. The transmission color of the solar-radiation-shielding material satisfies the Expression 2: 14


Provided is a copper powder in which the number of contact points between copper powder particles is increased to allow excellent electric conductivity to be achieved, and which can be used suitably in use applications including an electrically conductive paste and an electromagnetic wave shield. The copper powder (1) according to the present invention has a dendritic shape composed of a main stem (2) that is grown linearly and multiple branches (3) that are branched from the main stem (2), wherein the main stem (2) and the branches (3) are composed of a flat-plate-like cupper particle having a cross section with an average thickness of 0.2 to 1.0 um, and the average particle diameter (D50) of the copper powder (1) is 5.0 to 30 m. A copper paste having excellent electric conductivity can be produced by mixing the dendritic copper powder (1) with a resin.


Provided are exceptional covered lithium-nickel composite oxide particles that have lithium ion conductivity, the high environmental stability of said particles making it possible to inhibit the generation of impurities from the absorption of water and carbon dioxide; high adhesiveness also being achieved, and the coating layer not peeling off easily. The covered lithium-nickel composite oxide particles for the positive electrode active material in a lithium ion cell, said particles being obtained by covering the surfaces of nickel-based lithium-nickel composite oxide particles with a polymer composition containing an electron-nonconductive polymer and an electron-conductive polymer, are covered nickel-based lithium-nickel composite oxide particles having excellent environmental stability and no adverse effect on cell characteristics.


Patent
Sumitomo Metal Mining Co. | Date: 2017-05-03

Provided is a nickel oxide ore smelting method for forming pellets from a nickel oxide ore and performing smelting by reducing and heating the pellets in a smelting furnace, wherein it is possible to make the smelting reaction in the reduction step progress effectively while maintaining the strength of the pellets. This method for smelting a nickel oxide ore comprises: a pellet production step S1 for producing pellets from a nickel oxide ore; and a reduction step S2 for reducing and heating the obtained pellets in a smelting furnace at a predetermined reduction temperature. In the pellet production step S1, a mixture is formed by mixing materials including said nickel oxide ore without mixing a carbonaceous reducing agent, and the pellets are formed by agglomerating said mixture. In the reduction step S2, in charging the obtained pellets into the smelting furnace, a carbonaceous reducing agent is spread in advance over the furnace floor of the smelting furnace and the pellets are placed on the carbonaceous reducing agent, and the pellets are reduced and heated in a state where the pellets are covered by the carbonaceous reducing agent.


Patent
Sumitomo Metal Mining Co. | Date: 2017-05-03

Provided is a pellet production method that, in pelletizing and smelting a nickel oxide ore and producing ferronickel which is an iron-nickel alloy: makes the smelting reaction proceed effectively; increases the Ni content in the obtained ferronickel; and can prevent the ferronickel obtained after the smelting reaction from becoming granular. This pellet production method is a method for producing pellets that are used for producing an iron-nickel alloy and that are produced by mixing at least a nickel oxide ore, a carbonaceous reducing agent, and an iron oxide and agglomerating the obtained mixtures, the method comprising: a step S11 for producing at least two types of mixtures having different mixing ratios of said nickel oxide ore, said carbonaceous reducing agent, and said iron oxide; and a step S12 for forming pellets, which are agglomerates having a layered structure, by using said two or more types of mixtures such that the mixture with the highest content ratio of said iron oxide, among said two or more types of mixtures that have been obtained, forms the outermost layer.


Patent
Sumitomo Metal Mining Co. | Date: 2017-05-10

Provided is a method for smelting nickel oxide ore by which the occurrence of cracking due to heat shock can be suppressed when nickel oxide ore is pelletized and charged into a smelting step (reduction step). A method for smelting nickel oxide ore according to the present invention uses pellets of nickel oxide ore, the method being characterized by comprising a pellet production step S1 for producing pellets from nickel oxide ore, and a reduction step S2 for heating the resulting pellets at a predetermined reduction temperature in a reduction furnace, the reduction step S2 comprising preheating the pellets obtained in the pellet production step S1 to a temperature of 350 to 600C in the reduction furnace and thereafter charging the pellets into the reduction furnace and raising the temperature of the reduction furnace to the reduction temperature.


To provide a copper powder exhibiting a high electric conductivity suitable for a metallic filler used in an electrically conductive paste, a resin for electromagnetic shielding, an antistatic coating, etc., and having excellent uniform dispersibility required for forming a paste so as to inhibit an increase in viscosity due to flocculation. This copper powder 1 forms a branch shape having a plurality of branches through the conglomeration of copper particles 2. The copper particles 2 have a spheroidal shape, with diameters ranging from 0.2 m-0.5 m, inclusive, and lengths ranging from 0.5 m-2.0 m, inclusive. The average particle diameter (D50) of the copper powder 1 in which the spheroidal copper particles 2 have conglomerated is 5.0 m-20 m. By mixing this tree-branch-shaped copper powder 1 into a resin, it is possible to produce an electrically conductive paste, etc., exhibiting excellent electric conductivity, for example.


To provide excellent lithium-nickel composite oxide particles which have high environmental stability and are thus capable of suppressing generation of impurities due to absorption of moisture and a carbon dioxide gas, while being prevented from easy separation of a coating film because of high adhesion thereof and having lithium ion conductivity. Coated lithium-nickel composite oxide particles, which are obtained by coating the surfaces of lithium-nickel composite oxide particles with a predetermined coating material, have electrical conductivity and ion conductivity and are capable of suppressing permeation of moisture and a carbon dioxide gas. Consequently, the present invention is able to provide coated lithium-nickel composite oxide particles for positive electrode active materials of lithium ion batteries, which is excellent for use in lithium ion batteries.


Patent
Sumitomo Metal Mining Co. and Mabuchi Motor Co. | Date: 2017-05-31

Provided is a composition for bonded magnets, which exhibits good fluidity during molding and enables the production of a bonded magnet having durability in terms of thermal shock test. This composition for bonded magnets is capable of providing a bonded magnet obtained therefrom with excellent bonding strength in cases where the bonded magnet is bonded with a metal component via an adhesive. A composition for bonded magnets according to the present invention contains from 88% by mass to 91% by mass (inclusive) of a samarium-iron-nitrogen magnet powder having an average particle diameter of from 1.8 m to 2.8 m (inclusive), from 0.5% by mass to 2.5% by mass (inclusive) of a polyamide elastomer having a tensile elongation at break of 400% or more and a bending modulus of elasticity of 100 MPa or more, from 0.5% by mass to 2.0% by mass (inclusive) of carbon fibers having fiber diameters of from 10 m to 12 m (inclusive) and from 0.3% by mass to 1.0% by mass (inclusive) of a carboxylic acid ester, with the balance made up of a polyamide resin which is composed of a polyamide 12 having a weight average molecular weight (Mw) of from 4,500 to 7,500 (inclusive) as determined by molecular weight distribution measurement.

Loading Sumitomo Metal Mining Co. collaborators
Loading Sumitomo Metal Mining Co. collaborators