15 results about "Ferrite layer" patented technology

This invention provides an aluminum-silicon coated hot-stamped component, its preparation method, and its application. The component includes a steel plate substrate and an aluminum-silicon coating disposed on at least one surface of the steel plate substrate. The aluminum-silicon coating includes a low-aluminum ferrite layer with an aluminum content of less than 5 wt%, and the thickness of the low-aluminum ferrite layer is greater than 5 μm. The maximum bending angle of the aluminum-silicon coated hot-stamped component is greater than 65°. This invention significantly increases the thickness of the low-aluminum, tough ferrite layer in the aluminum-silicon coating after hot stamping, reaching 5-100 μm, by improving the hot stamping process. This effectively prevents the formation or propagation of surface or coating cracks, improving the bending performance of the pre-coated steel plate after hot stamping. Simultaneously, the hot stamping process of this invention takes into account or optimizes the microstructure of the steel matrix, further enhancing the overall bending and tensile properties of the material.

A coil component (1) is provided with: a green body (10) comprising a laminate in which a first ferrite layer (17a), a second ferrite layer (16a), a glass layer (15), a third ferrite layer (16b), and a fourth ferrite layer (17b) are laminated in this order; a coil (30) provided inside the glass layer (15); and an external electrode (20) provided on the outer surface of the element (10) and electrically connected to the coil (30), the ferrite materials constituting the first ferrite layer (17a), the second ferrite layer (16a), the third ferrite layer (16b), and the fourth ferrite layer (17b) containing X (X > = 0) mol% of Zn and Y (Y > = 0) mol% of Ni in terms of Zn and Ni in terms of ZnO and NiO, respectively, when Fe, Zn, Cu, and Ni are converted into Fe2O3, ZnO, CuO, and NiO, respectively, and the total content of Fe2O3, ZnO, CuO, and NiO is 100 mol%. X + Y > 0, X / (X + Y) of the ferrite material constituting the second ferrite layer (16a) and the third ferrite layer (16b) is 0 to 0.73 inclusive, and X / (X + Y) of the ferrite material constituting the first ferrite layer (17a) and the fourth ferrite layer (17b) is more than 0.73 and 1.0 or less.

The invention belongs to the technical field of educational toys, and relates to an anti-scattering magnetic adsorption jigsaw system. The system comprises a jigsaw picture, a flexible magnetic jigsaw plate and a magnetic jigsaw storage disc, ndFeB miniature permanent magnets are embedded in the back face of a base body of the The flexible magnetic jigsaw puzzle is prepared by mixing ferrite powder and flexible high polymer materials such as PVC or rubber, and can be curled and stored; a ferrite layer is embedded in the magnetic jigsaw storage disc, and an anti-slip high edge is arranged on the edge. And the jigsaw pieces are respectively in magnetic adsorption fit with the flexible magnetic jigsaw plates and the magnetic jigsaw storage disc through the permanent magnets on the back surfaces. According to the jigsaw puzzle, the risk that the jigsaw puzzles are scattered due to inclination or shaking can be effectively reduced in the jigsaw puzzle process, multiple jigsaw puzzle postures are supported, the jigsaw puzzles can be conveniently classified and stored, the whole jigsaw puzzle can be attracted to ferromagnetic metal surfaces such as a refrigerator door or a magnetic white board or a metal wall face after jigsaw puzzle is completed, and mounting-free display is achieved.

The utility model discloses a heat-dissipating, shielding and wave-absorbing adhesive tape easy to disassemble. Comprising a graphite layer, a first high-temperature-resistant acrylic adhesive layer arranged on the upper end face of the graphite layer, a ferrite layer arranged on the upper end face of the first high-temperature-resistant acrylic adhesive layer, a second high-temperature-resistant acrylic adhesive layer arranged on the upper end face of the ferrite layer and a foam layer arranged on the upper end face of the second high-temperature-resistant acrylic adhesive layer. The third high-temperature-resistant acrylic adhesive layer is arranged on the lower end face of the graphite layer, the metal foil is arranged on the lower end face of the third high-temperature-resistant acrylic adhesive layer, and the electric viscosity reducing adhesive layer is arranged on the lower end face of the metal foil. The adhesive tape has the advantages that the whole adhesive tape can form a passage between a pasted product and the metal foil layer according to the heavy industry requirement, so that the viscosity of the electric viscosity-reducing adhesive layer is reduced after current passes through, and the adhesive tape can be quickly torn off from the pasted product. When the whole adhesive tape is used for protecting an adhered object, the functions of buffering, wave-absorbing shielding, heat dissipation and convenient disassembly are achieved.

The application discloses a magnetic shielding structure and a manufacturing method thereof and a wireless charging system, and belongs to the technical field of wireless charging, wherein the magnetic shielding structure comprises a magnetic isolation plate, a ferrite layer and a nanocrystalline layer; the ferrite layer comprises a plurality of ferrite sheets which are laid on the magnetic isolation plate; the nanocrystalline layer is laid on the ferrite layer and comprises a plurality of layers of nanocrystalline strip materials which are arranged in a stack and insulating adhesive tapes which are arranged between two adjacent layers of the nanocrystalline strip materials; the insulating adhesive tapes are used for bonding the adjacent nanocrystalline strip materials; the nanocrystalline layer has a plurality of through holes which penetrate through the nanocrystalline layer along the stacking direction, and the plurality of through holes are uniformly and spacedly distributed. The magnetic shielding structure, the manufacturing method thereof and the wireless charging system provided by the application can relieve the heating condition in the charging process and have a relatively high electric energy transmission efficiency.

The application relates to the technical field of filters, in particular to a filter and a manufacturing method thereof and electronic equipment. The filter comprises a main body and an inner electrode. The main body comprises a first magnetic ferrite layer, a first non-magnetic ferrite layer and a second magnetic ferrite layer which are sequentially stacked. The inner electrode is arranged in the first non-magnetic ferrite layer. The material of the first magnetic ferrite layer, the second magnetic ferrite layer and the first non-magnetic ferrite layer at least contains Ni elements and Zn elements. The molar ratio n(Ni) : n(Zn) of the Ni elements and the Zn elements in the first non-magnetic ferrite layer is r1, the molar ratio n(Ni) : n(Zn) of the Ni elements and the Zn elements in the first magnetic ferrite layer is r2, and the molar ratio n(Ni) : n(Zn) of the Ni elements and the Zn elements in the second magnetic ferrite layer is r3, r1 < r2, and r1 < r3, so that the filter has good co-firing matching, and the reliability of the filter is improved.

The present invention addresses the problem of obtaining a welded joint having excellent LME resistance during production. This welded joint is characterized by being provided with a plurality of steel plates that overlap each other, a nugget that joins the plurality of steel plates together, a spot-welded section that has a pressure-welded section and a heat-affected section that are formed around the nugget, a non-heat-affected section that is a region outside the heat-affected section, and a separation section that is formed around the pressure-welded section, at least one steel sheet disposed on the outermost side among the plurality of steel sheets is a high-strength steel sheet having a Vickers hardness of 240 Hv or more at the center of the sheet thickness, the high-strength steel sheet having a predetermined chemical composition, and the thickness of the high-strength steel sheet being less than the thickness of the steel sheet at a position 50 [mu] m outward from the end of the pressure-welded section. A high ferrite layer having a ferrite phase area ratio of 90% or more is present at a thickness of 5 [mu] m or more in the thickness direction from the surface, and a B-concentrated portion having a B strength of two or more times the B strength at a depth of 50 [mu] m determined by TOF-SIMS measurement is present at a thickness of 1.0 [mu] m or more from the surface.

An Al—Si coated press hardening component, wherein the Al—Si coating comprises a low-Al content ferrite layer with an Al content of less than 5 wt % and a thickness of greater than 5 μm, and having a maximum bending angle of the Al—Si coated press hardening component is greater than 65°. The thickness of the tough low-Al content ferrite layer in the Al—Si coating after hot stamping, reaching 5-100 μm, by improving the hot stamping process, so that the formation or propagation of cracks on the surface or the coating is effectively prevented, and the bendability of the pre-coated steel after hot stamping is improved. At the same time, the hot stamping process of the present invention can take into account or optimize the microstructure of the steel substrate to further improve the bendability and tensile property of the whole material.

The utility model discloses a magnetic suction line with a composite shielding jacket, which relates to the technical field of magnetic connection, and comprises a magnetic line, a composite shielding component is fixedly connected in the magnetic line, the composite shielding component comprises a woven mesh, the woven mesh is fixedly connected in the magnetic line, a copper foil wire is fixedly connected in the woven mesh, and the copper foil wire is fixedly connected in the magnetic line. According to the magnetic attraction wire with the composite shielding jacket, the copper foil wires and the tinned copper wires are arranged, when the magnetic attraction wire is used, through the outermost woven net formed by weaving the copper foil wires and the tinned copper wires, the double composite materials can provide a more uniform shielding effect, and the magnetic attraction wire has better flexibility and durability; meanwhile, the ferrite layer can effectively absorb and attenuate energy of an external electromagnetic field, the aluminum foil layer can effectively block interference of the external electromagnetic field and protect transmission of the internal signal line, electromagnetic interference is prevented through three-layer protection, and the problem that the device cannot effectively shield the electromagnetic interference is solved.

The application discloses a magnetic circuit structure of a circulator, the circulator and electronic equipment. The magnetic circuit structure comprises a first magnet structure for generating a bias magnetic field through a ferrite layer of the circulator, the first magnet structure comprising a first magnet and a second magnet stacked in an up-down manner, and the edge of the second magnet protruding from the edge of the first magnet; a second magnet structure arranged opposite to the first magnet structure for forming a closed magnetic circuit of the bias magnetic field; when the magnetic circuit structure is arranged in the circulator, the first magnet structure and the second magnet structure are arranged on two sides of the ferrite layer, and the first bias magnetic field and the second bias magnetic field are respectively established in the first ferrite and the second ferrite adjacent to the ferrite layer, the magnetic field strength of the first bias magnetic field is greater than that of the second bias magnetic field; the position of the first magnet corresponds to the position of the first ferrite, and the position of the second magnet corresponds to the position of the second ferrite. The application has the effect of improving the magnetization uniformity of the composite ferrite circulator.

The utility model discloses a backlight module integrated with an NFC function. A black adhesive layer, a gap layer, an upper brightness enhancement film, a lower brightness enhancement film, a diffusion film, a light guide plate, a double-sided adhesive layer, a reflecting film, an NFC antenna layer and a backlight adhesive frame used for supporting and fixing the components are sequentially stacked from top to bottom. The NFC antenna layer comprises an NFC FPC (Flexible Printed Circuit) layer and a ferrite layer, the NFC antenna part is responsible for realizing a near field communication function, and the ferrite layer is used for shielding electromagnetic interference and ensuring the stability of the NFC function. Compared with the prior art, the NFC function is directly integrated into the backlight module, the space for independently arranging the NFC module is saved, the number of material assemblies is reduced, and therefore the product thickness is reduced. After the backlight module is assembled with an electronic product, the wearable electronic product is more compact, light and thin. And secondly, the combination of the backlight module and the NFC function realizes the high integration of functional modules, reduces material components, simplifies the assembly and production flow, reduces the manufacturing cost, and simplifies the production process.

To provide a radiation shielding material that suppresses the generation of hydrogen sulfide during disposal and achieves both electromagnetic wave absorption and strength. [Solution] The radioactive shielding material comprises a main body layer containing cement and a first ferrite layer containing ferrite, which is laminated in the stacking direction relative to the main body layer, wherein the main body layer includes a first polymer layer containing polymer, and at least one of the main body layer and the first ferrite layer contains boron.

This invention belongs to the field of surface thermal protection coating technology, and relates to a thermal barrier / high emissivity dual ceramic coating with adjustable thickness and its preparation method. The coating has a multi-layered structure, comprising, from the inside out, a metal bonding layer, a thermal barrier ceramic layer, and a high emissivity layer. The metal bonding layer is a NiCrAlY alloy bonding layer or a CoNiCrAlY alloy bonding layer. The ceramic layer is a multi-principal rare earth zirconate (RE2Zr2O7, RE=La / Nd / Sm / Eu / Gd) ceramic layer with low thermal conductivity. The high emissivity layer is a Sr-doped lanthanum ferrite layer. The dual ceramic coating of this invention has a gradient structure design, which can effectively alleviate the thermal mismatch stress caused by the difference in thermal expansion coefficients between the materials in each layer. Combining the high emissivity material, the low thermal conductivity material, and the metal bonding layer can reduce the heat conduction of high-temperature airflow to the substrate while enhancing the thermal radiation of the coating surface, greatly reducing the thermal load on the substrate.

The utility model discloses a magnetic core for direct current detection, which relates to the technical field of mutual inductors, and comprises a semi-circular magnetic core I and a semi-circular magnetic core II, two butt joint surfaces of the semi-circular magnetic core I and the semi-circular magnetic core II are respectively provided with an air gap; an insulating spacer is arranged at the air gap position of the butt joint surface of the semicircular magnetic core I and the semicircular magnetic core II to fill the air gap; each of the first semicircular magnetic core and the second semicircular magnetic core is of a multi-layer composite structure, each of the first semicircular magnetic core and the second semicircular magnetic core is of a laminated composite structure with a nanocrystalline layer and a ferrite layer arranged in a staggered mode, and an insulating layer is arranged between laminated layers of the nanocrystalline layer and the ferrite layer. The multi-layer composite structure of the first semicircular magnetic core and the second semicircular magnetic core solves the problem of material performance limitation, the air gap is formed between the first semicircular magnetic core and the second semicircular magnetic core to solve the problem of magnetic circuit nonlinearity, the precision and reliability of the mutual inductor can be remarkably improved through combination of the first semicircular magnetic core and the second semicircular magnetic core, and new market requirements are met.

The utility model provides an ultra-thin NFC (near field communication) structure and a display module. The ultra-thin NFC structure comprises a ferrite layer, an FPC (flexible printed circuit) and a back double-sided adhesive which are sequentially stacked, the ferrite layer comprises a protective film, a ferrite body and a ferrite double-sided adhesive which are stacked in sequence; the FPC comprises an upper copper plating layer, an upper base copper layer, an upper AD adhesive layer, a base material and a lower AD adhesive layer which are stacked in sequence. The upper copper plating layer and the upper base copper layer form an FPC coil; the thickness of the ferrite layer is 94 to 100 microns; the thickness of the FPC ranges from 63 micrometers to 109 micrometers. On the premise that functions and cost are not affected, the problem that the thickness of an existing NFC structure cannot meet the light and thin design requirement of a product is solved.