B22F 3/24 - After-treatment of workpieces or articles
C23C 24/10 - Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
H01G 9/045 - Electrodes characterised by the material based on aluminium
2.
Method for producing electrode material for aluminum electrolytic capacitors, and electrode material for aluminum electrolytic capacitors
The present invention provides a production method that enables easy production of an electrode material for aluminum electrolytic capacitor having a high capacitance, and that enables, in particular, easy production of an electrode material for aluminum electrolytic capacitor having a high capacitance regardless of the average particle diameter (D50) of aluminum powder to be used. Specifically, the present invention provides a method for producing an electrode material for aluminum electrolytic capacitor, comprising the steps of: (1) a first step of forming a film of a paste composition containing powder of at least one of aluminum and an aluminum alloy, a binder resin, and a solvent on at least one surface of a substrate, (2) a second step of sintering the film, and (3) a third step of applying an etching treatment on the sintered film.
H01B 1/02 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of metals or alloys
H01G 9/00 - Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devicesProcesses of their manufacture
The present invention makes it possible to increase the thickness of a sintered body. Thus, the present invention provides a production method that is suitable for the production of anode electrode materials with high capacitance useful for medium- to high-voltage aluminum electrolytic capacitors, that does not involve an etching treatment, and that enables desired formation of the resulting electrode material for aluminum electrolytic capacitor into the desired shape.
wherein the method does not comprise an etching step.
B22F 7/08 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
B23K 35/40 - Making wire or rods for soldering or welding
50 of 0.5 to 100 μm, (2) the sintered body is formed on one surface or both surfaces of the aluminum foil substrate and has a total thickness of 10 to 1,000 μm, (3) the porosity of the sintered body is 35 to 49% by volume, and (4) the sintered body is obtained by applying a rolling process to a film made from a composition comprising a powder of at least one member selected from the group consisting of aluminum and aluminum alloys, and subsequently sintering the film.
The present invention provides an electrode material for an aluminum electrolytic capacitor, which does not require any etching treatment and which has improved bending strength.
50 of 0.5 to 100 μm, (2) the sintered body is formed on one surface or both surfaces of the aluminum foil substrate and has a total thickness of 20 to 1,000 μm, and (3) the aluminum foil substrate has a thickness of 10 to 200 μm and an Si content of 10 to 3,000 ppm.
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 7/04 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite layers with one or more layers not made from powder, e.g. made from solid metal
B22F 7/08 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
C22C 1/04 - Making non-ferrous alloys by powder metallurgy
B22F 3/22 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor for producing castings from a slip
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
C22F 1/043 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
C23C 24/02 - Coating starting from inorganic powder by application of pressure only
6.
Electrode material for aluminum electrolytic capacitor and process for producing the electrode material
The present invention provides an electrode material for use in an aluminum electrolytic capacitor that does not necessitate an etching treatment. Specifically, the present invention provides an electrode material for use in an aluminum electrolytic capacitor, the electrode material comprising a sintered body of at least one of aluminum and an aluminum alloy.
patents