37results about "Liquid application" patented technology

The invention provides a flexible electromagnetic shielding film and a preparation method thereof. The preparation method comprises the following steps: mixing metal gallium and metal indium in a preset proportion to prepare a gallium-indium alloy; the preparation method comprises the following steps: putting a preset mass of gallium-indium alloy into an isopropanol solution, and treating through an ultrasonic cell disruption system to obtain a liquid metal particle suspension; stirring magnetic functional nanoparticles, an electrostatic spinning high-molecular elastomer and a solvent at normal temperature for a preset time to obtain an electrostatic spinning homogeneous solution; treating the electrostatic spinning homogeneous solution by adopting an electrostatic spinning process to obtain a magnetic nanofiber membrane; and spraying the liquid metal particle suspension onto the magnetic nanofiber membrane by adopting an electrostatic spraying process to obtain the flexible electromagnetic shielding film. According to the flexible electromagnetic shielding film and the preparation method thereof, the problem that the stability of an existing shielding material is reduced under the stretching effect can be solved.

Methods and systems for producing iron from an iron-containing ore and removing impurities found in the iron-containing ore are disclosed. For example, a method for producing iron comprises providing a feedstock having an iron-containing ore and one or more impurities to a dissolution subsystem comprising a first electrochemical cell; producing an iron-rich solution, in the dissolution subsystem; treating the iron-rich solution to remove at least a portion of one or more impurities by raising a pH of the iron-rich solution from an initial pH to an adjusted pH thereby precipitating at least a portion of the one or more impurities in the treated iron-rich solution; delivering the treated iron-rich solution to an iron-plating subsystem having a second electrochemical cell; second electrochemically reducing at least a first portion of the transferred formed Fe2+ ions to Fe metal; and removing the Fe metal from the second electrochemical cell thereby producing iron.

The present invention relates to an aluminum alloy disc blank for a magnetic disc, characterized by being formed of an aluminum alloy containing Mg: 3.40 to 3.90 mass%, the balance consisting of Al and unavoidable impurities, the aluminum alloy disc blank for a magnetic disc having an electrical conductivity of 36.0% IACS or more.

A system for fabricating anisotropic magnetic nanowire composites includes a chamber for containing an ionic fluid. A hole in a wall of the chamber allows for the ionic fluid to be in contact with a porous template outside of the chamber, and a cathode and an anode provide an electric field across the ionic fluid and porous template. The electric field causes ionic materials in the ionic fluid to migrate into the pores of the porous template, therefore plating nanowires in the porous template. Constant distances and positions of the anode, cathode, a reference probe, and a stirring element allow for the fabrication of longer, more uniform nanowires, and for the generation of consistent magnetic nanowire composites across multiple fabrication sessions.

Coatings comprising iron alloys that include iron and at least another metal (e.g., cobalt and / or nickel) for wireless recharging devices are generally described. The coatings may be directly applied to a substrate, such as a print circuit board.

Coatings for wireless recharging devices are generally described that include an iron alloy that includes iron and at least one additional metal (e.g., cobalt and / or nickel). The coating may be applied directly to a substrate, such as a printed circuit board.

The present invention relates to a preparation method of a flexible inductive electromagnetic energy harvesting device, its product, and installation method, and belongs to the technical field of preparation of energy harvesting devices. The present invention mainly applies a coating slurry containing magnetic nanopowders on both surfaces of a 75D / 144F ultrafine fiber polyester cloth base fabric, performs magnetron sputtering of copper to form a copper film pattern, bridges the copper film patterns on the two surfaces in sequence by sewing with conductive yarn, and then applies polyurethane glue to form a flexible inductive electromagnetic energy harvesting device with a magnetic base fabric as a flexible iron core and a copper film spiraled on both sides of the base fabric as a winding. The preparation method of the present invention is simple and easy to operate, and can prepare a fiber fabric with magnetic, flexible, and elastic properties that can be stretched tightly on the surface of a current-carrying circuit, thereby forming a new type of inductive electromagnetic energy harvesting device with the significant advantages of easy installation, the strongest magnetic field close to the surface of the current-carrying conductor, light weight, and good adaptability to different circuit shapes and shapes.

The application belongs to the technical field of electronic information materials, and specifically provides a method for preparing M-type barium ferrite monocrystal thin film under low temperature conditions; the method is characterized by innovative design of liquid phase raw materials and strict design of liquid phase epitaxy process parameters, and can grow the M-type barium ferrite monocrystal thin film with excellent performance on SGGG (111) substrate by liquid phase epitaxy method under low temperature conditions of 830-850 DEG C, which is not only simple in process and low in cost, but also has high crystallization quality, no impurities and defects. The M-type barium ferrite monocrystal thin film prepared by the method is a single crystal material, the film thickness is up to 150 mu m, the saturation magnetization is about 4500 Oe, the remanence is about 1000 Oe, the easy magnetization axis (c axis) is perpendicular to the film surface, has high uniaxial magnetic crystal anisotropy field, and is very beneficial to realize self-bias design of the device.

The application provides a preparation method of wear-resistant chemical nickel-boron alloy plating of a neodymium-iron-boron rare earth permanent magnet material, and comprises the following steps: S1, ultrasonic cleaning: in order to remove small metal powder and impurities in the pores of the surface of the part, the part is placed into an ultrasonic cleaning machine, and the part is ultrasonically cleaned with type B pure water for 15-20 minutes, and the ultrasonic cleaning temperature is 10-40 DEG C; S2, magnesium oxide oil removal: in order to completely remove the oil stains of the part, clean soft hair brushes are used to carefully wipe the surface to be plated with magnesium oxide powder for 2-3 times. The application provides a preparation method of wear-resistant chemical nickel-boron alloy plating of a neodymium-iron-boron rare earth permanent magnet material, and the material is subjected to acid corrosion, activation, nickel immersion and chemical nickel-boron plating processes, and then vacuum heat treatment is performed, so that the problem of low corrosion resistance and easy chipping of the neodymium-iron-boron rare earth permanent magnet material is solved, the surface hardness of the part is improved, and the function and service life of the product are increased.

An electroplating method for enhancing the performance of rolled-up passive components comprises providing an array of rolled-up passive components on a substrate, where each rolled-up passive component comprises a multilayer strip in a rolled configuration including multiple turns spaced apart by gaps. The multilayer strip comprises a conductive pattern layer on a strain-relieved layer, and a core of each rolled-up passive component is defined by a first of the multiple turns. A layer comprising a functional material is electroplated onto the conductive pattern layer of each rolled-up passive component, thereby at least partly filling the gaps and / or the core with the functional material.

An electromagnetic material for an inductance for operation at cryogenic temperatures including, in an electrically insulating matrix, metal nanoparticles with superparamagnetic behavior of size less than or equal to 30 nm and having a magnetic permeability greater than or equal to 1.5 for a frequency between 5 GHz and 50 GHz.

A pinched hybrid magnetic material and means of making said pinched hybrid material. The material comprises at least one magnetic material having at least one internal porous insulative layer; wherein, at least one of the voids is pinched off and filled with environmental material. The pinched voids are created by an electroless plating process.

Aspects of the present disclosure include systems, structures, circuits, and methods providing planar transformers and planar transformer structures. The planar transformers and transformer structures can include first and second core layers of soft ferromagnetic material on opposite sides of an electrical substrate. First and second coils can be configured as conductive traces disposed on the opposite sides of the substrate. The first and second soft ferromagnetic layers are in contact in a contact region. One or more holes are disposed in either or both of the soft ferromagnetic layers and contain soft ferromagnetic material to reduce reluctance of the transformer structure. The planar transformer can be included in integrated circuit (chip) packages or modules. The packages and modules may include various types of circuits; in some examples, chip packages or modules may include a gate driver or other high voltage circuit.

A MOD YIG epitaxial process for fabricating YIG nanofilms which, when deposited on GGG substrates, have single crystal epitaxial properties. The films may have thicknesses of 50 nm for a single layer, 100 nm for two layers, and 130 nm for three layers, and have a gyromagnetic ratio of 2.80 MHz per Oe, Gilbert damping ranges from 0.0003 to 0.001, 4πM$ values between 1650 G to 1780 G, coercivity from 1 Oe. to 5 Oe, and surface roughness of RMS 0.20 nm for up to 10 layers. Fabrication is economical and uses only a spinner, a drying station (RT to 150 C temperature control), and a quartz tube furnace that accommodates a flowing atmosphere of research grade oxygen, thereby eliminating the need for high vacuum deposition chambers.

The invention provides a laminated body, an element comprising the laminated body, and a method for manufacturing the laminated body. The laminate has: a piezoelectric layer formed from a crystal of an oxide having piezoelectric properties; a metal layer; and a magnetic material layer formed of a crystal of a Heusler alloy as a ferromagnet, in which the piezoelectric material layer, the metal layer, and the magnetic material layer are laminated in this order.

This magnet is provided with: a yoke part that contains a soft magnetic material; and a magnet part that contains a hard magnetic material and that is formed on a main surface of the yoke part. An interface between the magnet part and the yoke part has a protruding / recessed shape.

A hybrid magnetic material comprising at least one magnetic material having at least one internal porous insulative layer; and wherein, at least one of the magnetic materials fills the voids of the internal porous insulative layer. The hybrid material blends core metals and insulation layers in a manner so that the resulting material operates as a single layer material with its own unique conductivity; skin effect; B-H curve; B SAT parameters; and a unique and strong directional impedance. By using a porous insulation layer, metal layers may be bonded together through insulation layers, and this allows rapid low cost formation of the hybrid material. The hybrid material may be used to form small low-cost cores capable of handling high frequency applications.

Provided are a method and device for recognizing gait information using a plurality of magnetic sensors. The method for recognizing gait information generates a magnetic sensing signal from a magnetic paint painted on the ground, generates a frequency-converted signal using the magnetic sensing signal, and generates gait information using the frequency-converted signal.

Provided is an electromagnetic wave shielding material that can satisfactorily suppress cracks or the like during use (especially during bending) as an electromagnetic wave shielding material. The electromagnetic wave shielding material including a laminate having at least one non-magnetic conductive metal layer and at least one ferromagnetic layer laminated together, wherein at least one outermost layer of the laminate is the non-magnetic conductive metal layer, and wherein, when the electromagnetic wave shielding material is bent at a radius of curvature of 0.1 mm with an outermost non-magnetic conductive metal layer outside, a bending neutral axis is located within a thickness of the outermost non-magnetic conductive metal layer.

Method for the production of a core-shell-shell FeCo / SiO2 / MnBi nanoparticle comprising: a) Joint reduction of an iron ion and a cobalt ion from a common solution; and joint precipitation of an FeCo alloy nanoparticle; Isolating the FeCo nanoparticle from the reduction mixture; b) Forming a silicon dioxide coating on the FeCo nanoparticle to obtain a core-shell nanoparticle, wherein the nanoparticles are treated with tetraethyl orthosilicate in a water-ethanol mixture using triethylamine as a basic catalyst; and c) Forming a MnBi alloy nanocoating on the core-jacket nanoparticle by reducing Bi ions through a Mn-lithium borohydride complex by precipitation from a solution as a MnBi alloy onto the silicon dioxide jacket; the formation of the MnBi alloy nanocoating c) is carried out in a magnetic field of 0.005 T (50 Gauss) to 0.08 T (800 Gauss).

Utilizing hybrid materials in a current sensing transformer with primary to secondary coil ratios greater than one is possible and practical. The ease of manufacture associated with this method allows almost any inductor of any size to be converted into a current sensing transformer without significantly increasing the size, cost, or time of manufacture or affecting the performance of the inductor itself. The result is low-cost, high-performance AC and DC current sense components.

A voice coil actuator includes a first magnetic body, a second magnetic body facing the first magnetic body via a gap, and a coil disposed in the gap between the first magnetic body and the second magnetic body. At least one of the first magnetic body and the second magnetic body has a multilayer structure including a transition metal layer and a rare earth magnet layer.

Methods and systems for dissolving an iron-containing ore are disclosed. For example, a method of processing and dissolving an iron-containing ore comprises: thermally reducing one or more non-magnetite iron oxide materials in the iron-containing ore to form magnetite in the presence of a reductant, thereby forming thermally-reduced ore; and dissolving at least a portion of the thermally-reduced ore using an acid to form an acidic iron-salt solution; wherein the acidic iron-salt solution comprises protons electrochemically generated in an electrochemical cell.

An embedding method and embedded structure for a magnetic transformer, an electronic device and a storage medium are disclosed. The method includes: providing a copper-clad substrate; electroplating on surfaces of the copper-clad substrate to form a coil; laminating prepregs and copper sheets to form a first substrate; drilling the first substrate to define a first and second through hole; filling a magnetic material in the first through holes to form first embedded magnets; forming a metal layer on an inner wall of the second through hole and surfaces of the first substrate; manufacturing conductive pillars and sacrificial blocks; laminating insulating layers; etching the sacrificial block to define cavities; filling a magnetic material in the cavities to form second embedded magnets; and manufacturing a circuit and a solder resist layer on surfaces of the insulating layer to form a package substrate.

Coatings comprising iron alloys that include iron and at least another metal (e.g., cobalt and / or nickel) for wireless recharging devices are generally described. The coatings may be directly applied to a substrate, such as a print circuit board.

An inductor and a manufacturing method thereof. The inductor includes a coil, a magnetic base, and a magnetic covering layer, where the coil includes a conductor and an isolation layer coated on a surface of the conductor, the magnetic base is configured to fix the coil, the magnetic covering layer covers the coil located on the magnetic base, and an equivalent particle size of metal particles in the magnetic covering layer is less than or equal to twice the thickness of the isolation layer. In the present disclosure, the magnetic covering layer of the inductor is made of a soft magnetic metal material, and the equivalent particle size of the metal particles in the soft magnetic metal material is less than or equal to twice the thickness of the isolation layer of the coil, such that a short circuit percentage caused by powder piercing the coil can be reduced.

A walking information recognition method and device using a plurality of magnetic sensors are provided. The walking information recognition method includes generating a magnetic induction signal from a magnetic paint applied to a floor, generating a frequency conversion signal using the magnetic induction signal, and generating walking information using the frequency conversion signal.

To provide a magnet having a high surface magnetic flux density, a small device, a microactuator and a sensor.SOLUTION: A method for manufacturing an SmCo-based magnet has a Co base material, an Sm2Co17 film on the Co base material, and an SmCo5 film on the Sm2Co17 film. The method for manufacturing the SmCo-based magnet includes a reaction diffusion step for acquiring a laminate having the Co base material and an SmCo2 film formed on the Co base material by immersing the Co base material containing an Sm source to perform reaction diffusion, and a heating step for reacting the Co base material and the SmCo2 film by heating the laminate to form the Sm2Co17 film and the SmCo5 film.SELECTED DRAWING: Figure 1

The present invention relates to a closed hybrid magnetic material and a method for fabricating the same, which includes at least one magnetic material having at least one inner porous insulating layer, at least one of the voids being closed and filled with an environmental material, and the closed voids are formed by an electroless plating process.

The invention belongs to the technical field of inductors, and discloses ferrite slurry and application. The ferrite slurry comprises magnetic powder, PVB resin, a plasticizer, an anionic acidic group copolymer dispersant and a solvent. The anionic acidic group copolymer dispersant is a styrene copolymer containing a sulfonic acid group and / or an acrylate copolymer containing a carboxylic acid group; the mass ratio of the anionic surface active dispersant to the PVB resin is 1: (2.5-5). The ferrite slurry disclosed by the invention has high rheological stability, strong electrical property retention capability and excellent film forming quality, can realize remarkable improvement of the slurry tape casting belt speed, high stability of a tape casting film forming process and high performance of a terminal device, can be applied to manufacturing of an inductor, a transformer or an electromagnetic shielding material, and has wide application prospects. And the requirements of high-frequency, miniaturized and high-performance electronic devices are met, and a wider application range is realized.