19 results about "Alnico" patented technology

The present invention provides a high-performance AlNiCo composite thin film material for magnetic code disks and its preparation method, relating to the field of magnetic materials technology. The material comprises: a base layer and a non-magnetic / ferromagnetic composite multilayer thin film deposited on the base layer; the thin film comprises at least multiple AlNiCo films, an intercalated metal film, and a protective metal film. The present invention enables the AlNiCo film to meet the performance requirements of both a high-magnetic film and a non-magnetic buffer layer. The preparation method of the thin film material is simple, high-performance, and low-cost, providing a scientific basis and innovative ideas for the preparation and application of thin-film magnetic code disk materials.

The present invention discloses a magnetically adjustable bearingless flux reversal permanent magnet motor and a control method thereof. The motor comprises a stator core, a rotor core, a suspension winding, a torque winding and a permanent magnet. The stator core is provided with stator teeth facing the rotor core, and the stator teeth are wound with windings. NdFeB permanent magnets are respectively surface-mounted on the left and right sides of the top of the tooth portion of each stator tooth, and the magnetization directions of the NdFeB permanent magnets on the tooth portion of the same stator tooth are the same, while the magnetization directions of the NdFeB permanent magnets on the tooth portions of adjacent stator teeth are opposite. An AlNiCo permanent magnet is arranged at the end of the yoke portion of each stator tooth, and NdFeB permanent magnets are arranged on both sides of each AlNiCo permanent magnet. The magnetization direction of the AlNiCo permanent magnets is radial, and a closed magnetic circuit can be formed between the NdFeB permanent magnets embedded in adjacent stator teeth and the surface-mounted NdFeB permanent magnets. The present invention achieves online regulation of the magnetic field by cleverly arranging the positions of the permanent magnets in the motor body and then controlling the zero-sequence current in the winding.

The invention discloses a method for recycling valuable metal from aluminum-nickel-cobalt permanent magnet alloy waste, belongs to the technical field of hydrometallurgy, and treats the aluminum-nickel-cobalt permanent magnet alloy waste through a step-by-step leaching strategy and a two-stage method. Performing first-stage leaching by using low-concentration inorganic acid to obtain first-stage liquid; and then iron removal is directly carried out on the basis of the first-section liquid, alloy waste is added in the iron removal process, secondary leaching is carried out, and leaching liquid and iron removal slag are obtained. And finally, carrying out extraction separation on the second-stage liquid to respectively obtain a copper-containing solution, an aluminum-containing solution, a cobalt-containing solution and a nickel-containing solution. According to the technology, valuable metal leaching is achieved in the iron separation process, the concentration of metal ions in the solution is increased, connection with follow-up procedures is facilitated, and the consumption of acid and alkali is remarkably reduced. According to the method, the alloy waste is continuously leached out through hydrogen ions generated in the iron separation process, the safety risk in the production process is greatly reduced, and the safety of operators and the stability of the production environment are ensured.

Disclosed are composite substrates and rechargeable lithium batteries. The composite substrate includes a first metal layer, a second metal layer, and a magnetic layer between the first metal layer and the second metal layer. A ratio of a thickness of the magnetic layer to a thickness of the composite substrate is in a range of about 0.01 to about 0.9. The magnetic layer includes a magnetic material and a polymeric material. The magnetic material includes at least one of neodymium (Nd), neodymium-iron-boron (NdFeB), ferrite, aluminum-nickel-cobalt (AlNiCo), samarium-cobalt (SmCo), and any combination thereof. A ratio of a weight of the magnetic material to a total weight of the magnetic layer is in a range of about 10 wt % to about 96 wt %.

The utility model discloses a magnet sintering device based on aluminum-nickel-cobalt alloy waste recycling, and relates to the technical field of magnet sintering. Comprising a sintering main body, the sintering main body is provided with a magnet sintering mechanism used for recycling the aluminum-nickel-cobalt alloy waste, and the magnet sintering mechanism is characterized in that the aluminum-nickel-cobalt alloy waste is fed into the sintering main body through a feeding support, and then a first crushing shaft and a second crushing shaft work; the aluminum-nickel-cobalt alloy waste is crushed and then sintered, the aluminum-nickel-cobalt alloy waste is refined and is easier for subsequent processing and utilization, the waste caused by irregular shape or overlarge size of the waste is reduced, the crushed waste can be more fully mixed with the sintered material, the overall recovery rate of the waste is improved, the crushed waste particles are smaller and more uniform, and the production efficiency is improved. And a denser and more uniform organization structure can be formed in the sintering process, so that the quality and the performance of the sintered magnet are improved.

The invention relates to the technical field of permanent magnet assemblies, in particular to a modular adjustable magnetic flux permanent magnet assembly and an assembly process thereof. The permanent magnet assembly comprises at least two groups of permanent magnet module units and a magnetic flux adjusting assembly; each permanent magnet module unit is composed of a main magnet and an auxiliary magnet which are stacked in the magnetic pole direction, an adjusting gap is reserved between the main magnet and the auxiliary magnet, and the main magnet is a neodymium iron boron-based permanent magnet doped with rare earth elements and transition metal. The auxiliary magnet is an aluminum-nickel-cobalt-ferrite composite permanent magnet coated with a nanocrystalline layer, and the auxiliary magnet is composed of aluminum-nickel-cobalt alloy powder and ferrite nano powder; the magnetic flux adjusting assembly comprises a high magnetic conductance insertion piece and a magnetic isolation insertion piece, and the high magnetic conductance insertion piece and the magnetic isolation insertion piece can be selectively inserted into an adjusting gap between the main magnet and the auxiliary magnet. According to the invention, the advantages of different permanent magnet materials are combined, so that the assembly has high magnetic performance and stability while maintaining high magnetic energy product and high residual magnetism.

The invention discloses an AlNiCo magnetic thin film material with a stripe structure and a preparation method and application of the AlNiCo magnetic thin film material. The AlNiCo magnetic thin film material with the stripe structure comprises a substrate with stripes on a single face and an AlNiCo thin film covering the face, with the stripes, of the substrate. The preparation method of the AlNiCo magnetic thin film material with the stripe structure comprises the following steps: firstly depositing an AlNiCo thin film on the stripe side of a substrate with stripes on one side, then depositing or not depositing a protective layer on the surface of the AlNiCo thin film, and then carrying out annealing treatment to obtain the AlNiCo magnetic thin film material with the stripe structure. The AlNiCo magnetic thin film material with the stripe structure has the advantages of large residual magnetism, large saturation magnetization intensity, large magnetic energy product, good temperature stability and the like, the preparation method is simple, the production cost is low, and the AlNiCo magnetic thin film material is suitable for large-scale industrial production and application.

The present invention relates to the field of permanent magnet materials, and discloses a preparation method of a high-quality columnar crystal aluminum-nickel-cobalt magnetic material, comprising: 1) plasma spraying a coating material on the surface of a crystallizer panel to form a uniform coating; 2) pouring the molten raw material into a sand mold, removing the sand mold after cooling and crystallization, standing for cooling, and removing the sand mold to obtain a blank; 3) shape processing; 4) subjecting the blank to solution heat treatment, cooling, magnetization, and tempering treatment to obtain a semi-finished blank; 5) finish machining. The present invention uses plasma spraying technology to spray an inorganic coating on the surface of the crystallizer panel. First, the coating has a high density and better adhesion to the substrate; second, the coating can withstand high-temperature molten steel of at least 1750 °C, avoiding the crystallizer panel from being penetrated by molten steel; third, the coating also has excellent thermal conductivity and does not affect the directional cooling effect of the crystallizer panel, so that finally high-quality columnar crystals that are thick and tall can be obtained.

The application provides a SmCo / AlNiCo composite magnet and a preparation method thereof. The preparation method comprises the following steps: mixing SmCo alloy powder and AlNiCo powder with specific compositions, and then sequentially performing orientation setting and cold isostatic pressing treatment to obtain a SmCo / AlNiCo composite magnet green body; and sequentially performing vacuum sintering, solid solution treatment and aging treatment on the SmCo / AlNiCo composite magnet green body to obtain the SmCo / AlNiCo composite magnet. In the application, SmCo-containing raw materials and AlNiCo alloy raw materials with specific compositions are selected to prepare the SmCo alloy powder and the AlNiCo powder, and through the steps of mixing the two, sequentially performing orientation setting, cold isostatic pressing treatment, vacuum sintering, solid solution treatment and aging treatment and the like, the advantages of the SmCo magnet and the AlNiCo magnet can be fully utilized, and a composite magnet material with good magnetic performance at high temperature can be obtained.

A composite substrate and a rechargeable lithium battery are disclosed. The composite substrate includes a first metal layer, a second metal layer, and a magnetic layer between the first metal layer and the second metal layer. A ratio of a thickness of the magnetic layer to a thickness of the composite substrate is in a range of about 0.01 to about 0.9. The magnetic layer includes a magnetic material and a polymeric material. The magnetic material includes at least one of neodymium (Nd), neodymium-iron-boron (NdFeB), ferrite, aluminum-nickel-cobalt (AlNiCo), samarium-cobalt (SmCo), and any combination thereof. A ratio of a weight of the magnetic material to a total weight of the magnetic layer is in a range of about 10 wt% to about 96 wt%.

This utility model discloses a non-destructive testing device for large aluminum-nickel-cobalt alloy castings, belonging to the field of non-destructive testing equipment technology. It includes a gantry frame with an internal testing mechanism for omnidirectional testing of components. The testing mechanism includes a rotating unit and a lifting unit. The rotating unit, located inside the gantry frame, includes a top plate fixedly installed at the top of the gantry frame. A motor drives a pinion gear to mesh with a large gear, causing a rotating shaft and connecting column to rotate, allowing the scanning testing component to rotate horizontally around the casting. Simultaneously, the lifting unit, driven by a motor, drives a worm gear to mesh with a worm wheel, causing the rotating column and gear to rotate, thereby controlling the rack to move vertically within a rectangular hole, achieving the lifting and adjustment of the scanning probe. The two working together allow the scanning probe to cover different heights and circumferential areas of the casting, eliminating the need for hoisting and flipping large castings, significantly reducing testing costs and safety risks.

The invention relates to the technical field of permanent magnet materials, in particular to a fully-dense composite permanent magnet material and a preparation method thereof. The preparation method of the fully-dense composite permanent magnet material provided by the invention comprises the following steps: S1, respectively crushing an AlNiCo permanent magnet material and an REFeB permanent magnet material into powder to obtain AlNiCo powder and REFeB powder; s2, AlCuCo alloy raw materials are matched according to the atomic percent, the AlCuCo alloy raw materials are mixed and subjected to ingot casting, then the mixture is crushed into powder, and AlCuCo alloy powder is obtained; s3, the AlNiCo powder, the REFeB powder and the AlCuCo alloy powder are mixed and then subjected to spark plasma sintering, and the fully-dense composite permanent magnet material is obtained; wherein the mass ratio of the AlNiCo powder to the REFeB powder to the AlCuCo alloy powder is 1 to (0.5 to 1) to (0.01 to 0.1). According to the preparation method of the composite permanent magnet material provided by the invention, when the AlNiCo powder and the REFeB powder are sintered, the AlCuCo alloy powder is added, so that the density of the fully-dense composite permanent magnet material can be improved.

The invention discloses a columnar crystal aluminum-nickel-cobalt alloy near-net forming method which comprises the following steps that (1) spherical aluminum-nickel-cobalt alloy powder and spherical Si powder are mixed for laser powder bed additive manufacturing, the technological parameters of laser powder bed additive manufacturing include that the laser power ranges from 100 W to 200 W, the scanning speed ranges from 800 mm / s to 2000 mm / s, and an aluminum-nickel-cobalt alloy workpiece is obtained; and (2) the aluminum-nickel-cobalt alloy workpiece is subjected to solution treatment, water quenching, isothermal heat treatment and three-section type aging treatment, and the columnar crystal aluminum-nickel-cobalt alloy is obtained. The near-net forming method for the columnar crystal aluminum-nickel-cobalt alloy has the advantages of being easy to operate, high in efficiency, small in resource waste, low in energy consumption and the like, fine columnar crystals which are directionally arranged can be formed in the aluminum-nickel-cobalt alloy, the shape anisotropy of the aluminum-nickel-cobalt alloy is effectively improved, and therefore the coercive force of the aluminum-nickel-cobalt alloy is improved.

The application discloses an electromagnetic adsorption type inlaying claw hand and belongs to the field of mechanical hands. The electromagnetic adsorption type inlaying claw hand comprises an electromagnet fixing base, a mounting flange is fixedly connected to the bottom of the electromagnet fixing base, a switch induction switch is fixedly connected to the outer side wall of the electromagnet fixing base, a proximity switch is fixedly connected to the bottom of the switch induction switch and located below the mounting flange, a plurality of oil-free shaft sleeves are embedded and mounted in the electromagnet fixing base, guide rods are slidably connected to the oil-free shaft sleeves, a push plate is fixedly connected to the top ends of the guide rods, a switch base is fixedly connected to the bottom ends of the two guide rods located in front of the outer side of the electromagnet fixing base, and springs are sleeved with the outer side walls of the guide rods. Compared with a traditional clamping mode, the device can control the adsorption and loosening of inlaying pieces through the combination of AlNiCo and NdFeB to charge and demagnetize.

The invention relates to the technical field of magnetic grid materials, and particularly discloses an angular displacement sensor magnetic grid material for a humanoid robot actuator and a preparation method and application of the angular displacement sensor magnetic grid material, and the magnetic grid material comprises a substrate, a first AlNiCo layer, a Zr layer, a second AlNiCo layer and a Ti layer which are sequentially stacked. According to the invention, the Zr element with strong oxygen absorption characteristic is introduced as an intercalation layer, and in the high-temperature annealing process, on one hand, Zr is oxidized to form ZrO2, floating and oxidation of Al atoms are inhibited, grains are refined, and a magnetic phase is isolated; on the other hand, a soft magnetic Zr6Co23 intermetallic compound is formed through reaction with Co, and the magnetic performance is cooperatively regulated and controlled. According to the material, when the thickness of a Zr layer is 20 nm, the coercive force reaches 666 Oe and is improved by 111% compared with that of a sample without Zr introduction, meanwhile, the residual magnetism is kept at the high level of 6568 Gs, and the excellent balance of the high coercive force and the high residual magnetism is achieved. The material disclosed by the invention is simple in preparation process, excellent in performance and particularly suitable for a high-precision and miniaturized flexible sensing and driving integrated actuator of a humanoid robot.

This utility model relates to the field of electric-assisted bicycle drive technology, and discloses a magnetic wheel non-contact transmission structure for electric-assisted bicycles, including: a drive motor and a magnetic wheel assembly; the output end of the drive motor is fixedly connected to a motor shaft; the magnetic wheel assembly consists of an inner rotor and an outer rotor, the inner rotor is fixedly connected to the motor shaft, and the outer rotor is disposed outside the inner rotor; the ratio of the number of magnetic pole pairs of the inner rotor to the number of magnetic pole pairs of the outer rotor is 4:19-22, and non-contact gear shifting is achieved through the magnetic pole pair differential effect, the speed ratio formula is: speed ratio = number of magnetic pole pairs of the outer rotor / number of magnetic pole pairs of the inner rotor; the surface of the magnetic wheel assembly is coated with a high-temperature resistant protective layer, which is an AlNiCo-epoxy resin composite coating. This application replaces the mechanical meshing gear transmission of the motor in the prior art with a magnetic wheel assembly, solving the problems of high gear noise, frequent vibration, short life and high maintenance cost of the existing transmission method.

The invention relates to the technical field of magnet forming, in particular to an aluminum-nickel-cobalt magnet precision forming method which comprises the following steps: S1, raw material preparation: weighing and crushing metal raw materials to obtain primarily crushed aluminum-nickel-cobalt alloy ingots; according to the method, smelting is conducted in the high-vacuum environment lower than 0.1 Pa, planetary ball milling and strict screening are combined, the uniform alloy powder with the particle size ranging from 1 micrometer to 50 micrometers is prepared, the basis of high fluidity and high filling density is provided for follow-up pressing forming, and internal defects caused by uneven powder are effectively avoided. The two-stage numerical control precision pressing process combining pre-pressing and final pressing is adopted, air in powder gaps is eliminated in the pre-pressing stage of 50-100 MPa, pressed blank cracking is prevented, and it is ensured that a magnet green body obtains extremely high size precision and density consistency in the final pressing stage of 200-300 MPa.

This invention discloses a method for recovering valuable metals from AlNiCo permanent magnet alloy waste, belonging to the field of hydrometallurgical technology. This invention employs a step-by-step leaching strategy, using a two-stage process to treat the AlNiCo permanent magnet alloy waste. A first-stage leaching is performed using a low-concentration inorganic acid to obtain a first-stage solution. Subsequently, iron removal is directly performed on the first-stage solution, with alloy waste added during the iron removal process for a second leaching, yielding a leachate and iron-removed slag. Finally, the second-stage solution is extracted and separated to obtain solutions containing copper, aluminum, cobalt, and nickel, respectively. This process achieves both iron separation and valuable metal leaching simultaneously, increasing the concentration of metal ions in the solution, facilitating integration with subsequent processes, and significantly reducing acid and alkali consumption. Furthermore, this invention utilizes hydrogen ions generated during iron separation to continuously leach the alloy waste, significantly reducing safety risks during production and ensuring operator safety and a stable production environment.

Provided is a magnetic clamping device in which the power consumption of a magnetizing coil made of a magnet material capable of reversing the polarity is reduced. A magnetic clamping device 10 comprises: an alnico magnet 16 in which the polarity of can be reversed by a neodymium magnet 18 and a magnetizing coil 17; a controller 7; a rectification circuit 31; and a first circulating circuit 32. The rectification circuit 31 performs half-wave rectification on an alternating-current power source, supplies positive-side pulses to the magnetizing coil 17 for a given period when being instructed the controller 7 to magnetize the magnetizing coil 17, and supplies negative-side pulses to the magnetizing coil 17 for a given period when being instructed to demagnetize the same. The first circulating circuit 32 includes a diode 34 and a switch 35 that are serially connected to each other, returns a current obtained from back electromotive force resulting from turning on the switch 35 during the period in which magnetization is instructed by the controller 7 and forming a closed citcuit with the magnetizing coil 17, and turns off the switch 35 during the period in which demagnetization of the magnetizing coil 17 is instructed by the controller 7.