Double-sided deposition equipment for gradient nano ferro-nickel alloy

Abstract

The invention relates to the technical field of nickel-iron alloy deposition, and discloses gradient nano nickel-iron alloy double-sided deposition equipment which comprises an electro-deposition tank, a partition plate is installed at the middle end of the inner side of the electro-deposition tank, and the partition plate is provided with a blocking structure used for separating electro-deposition liquid in a first tank and an electro-deposition liquid in a second tank. The rubber sleeve is extruded by the sliding block to be gradually extruded into the position between the two extrusion blocks, the two sides of the rubber sleeve are in synchronous interference fit, so that the surfaces of the two sides of the rubber sleeve and the surfaces of the two sides of the nickel-iron alloy block are tightly attached, the gap is zero, and when the downward pressing force of the screw rod is transmitted to the rubber sleeve through the sliding block, elastic deformation of rubber is utilized, so that the rubber sleeve is tightly extruded. Enough contact pressure is generated on the contact surface, so that physical sealing is formed, the magnitude of interference of the rubber sleeve is 1%-5% of the diameter of the nickel-iron alloy block at the moment, the nickel-iron alloy block is tightly attached after being assembled, the gap is zero, communication of the first pool and the second pool is thoroughly isolated, and the beneficial effect that deposition liquid of the double-sided electro-deposition nanometer nickel-iron alloy cannot interfere with each other is achieved.

Description

Technical Field

[0001] This invention relates to the field of nickel-iron alloy deposition technology, specifically to a double-sided deposition device for gradient nano-nickel-iron alloys. Background Technology

[0002] Gradient nano-nickel-iron alloys are nickel-iron alloys in which the composition and grain size change continuously in space. The gradient refers to the fact that the relative content of nickel and iron in the material is not constant, but changes continuously and smoothly from one end of the material to the other, for example, from the surface to the interior. It may be nickel-rich on the surface and iron-rich inside, or vice versa. Nanocrystals refer to the fact that the size of the crystal particles constituting the material is at the nanoscale, usually less than 100 nanometers. Combining the two, we get gradient nano-nickel-iron alloys. Unlike traditional coating / substrate structures, the gradient structure of gradient nano-nickel-iron alloys is a continuous transition of composition and structure, without obvious bonding interfaces. Therefore, it can effectively suppress interface peeling and cracking problems caused by abrupt changes in performance. Electrodeposition is one of the most mainstream and commonly used techniques for the preparation of gradient nano-nickel-iron alloys. By precisely controlling electroplating parameters, such as current density, pH value, temperature, and additive concentration, nickel-iron alloy thin films or bulk materials with different gradient curves, where the composition gradually changes from nickel-rich to iron-rich and has a nanocrystalline structure, can be prepared.

[0003] Because gradient nano-nickel-iron alloys require a gradient, the electrodeposition parameters must be controlled, especially the concentrations of additives and even the composition of the deposition solution. Currently, gradient deposition of whole nano-nickel-iron alloys is a mature technology, as disclosed in section 0022 of the specification in CN102115898A: "The experiment used a low-carbon steel sample as the cathode material, and an electrolytic nickel plate and a pure iron plate as the anode materials. The electrolytic nickel plate had an area of ​​100mm × 100mm; the pure iron plate had an area of ​​100mm × 20mm. The electroplating power supply used a thyristor rectifier power supply. During the electroplating process, a cathode moving device and a circulating filtration device were used. After rust removal, degreasing, and surface activation treatment, the low-carbon steel sample was electroplated with nickel-iron alloy under circulating stirring and cathode moving conditions." However, there are no publicly available materials documenting the double-sided deposition of nano-nickel-iron alloys. Since double-sided deposition of nano-nickel-iron alloys is required, it means that two deposition tanks are needed simultaneously, and the two tanks must not cross-contaminate each other during the deposition of nano-nickel-iron alloys. A search has not yet revealed a technical solution to this problem. Summary of the Invention

[0004] Technical problems to be solved: To address the shortcomings of existing technologies, this invention provides a double-sided deposition apparatus for gradient nano-nickel-iron alloys, which has the advantages of being able to perform double-sided electrodeposition of nano-nickel-iron alloys simultaneously, and the deposition solutions of the double-sided electrodeposition nano-nickel-iron alloys do not interfere with each other, thus solving the problems of the aforementioned technologies.

[0005] Technical solution: To achieve the above objectives, the present invention provides the following technical solution: a double-sided deposition device for gradient nano-nickel-iron alloy, comprising an electrodeposition tank, a partition plate installed in the middle of the inner side of the electrodeposition tank, the partition plate being horizontally fixedly installed inside the electrodeposition tank, dividing the inside of the electrodeposition tank into two parts, the electrodeposition tank being divided into a No. 1 tank and a No. 2 tank by the partition plate, and a drain hole installed at the bottom of the inner side of both the No. 1 tank and the No. 2 tank, the drain hole penetrating the electrodeposition tank and being connected to the deposition liquid tank through a pipe; The partition is equipped with a barrier structure to separate the electrodeposition solutions of pool 1 and pool 2; It includes a sliding opening that runs through the middle of the partition. A slider slides inside the sliding opening, and a rubber sleeve is fixedly connected to the bottom of the slider. The inner side of the rubber sleeve is penetrated by a nickel-iron alloy block, and the first and last ends of the nickel-iron alloy block after penetrating the rubber sleeve are in pool 1 and pool 2, respectively. It includes a lifting rod, which is fixedly installed on the top surface of the slider. The middle end of the lifting rod also passes through a bracket fixedly installed on the top surface of the partition. A screw hole is opened at the point where the lifting rod passes through the bracket. The diameter of the screw hole is larger than that of the lifting rod, and a screw rod is threadedly fixedly installed on the top of the lifting rod. The bottom of the screw rod is rotatably connected to the top surface of the lifting rod.

[0006] Preferably, baffles are also fixedly connected to the front and rear walls of the slider, and the two baffles work together with the slider to form an "I" shape, covering the front and rear walls of the partition.

[0007] Preferably, the bottom of the baffle has an opening, and the inside of the opening is inserted into the rubber sleeve.

[0008] Preferably, the partition is made of polypropylene / polyvinyl chloride board, and the rubber sleeve is made of perfluoroether rubber.

[0009] Preferably, the bottom of the sliding opening extends vertically downward to two-thirds of the partition, and the bottom of the sliding opening is located at the midpoint of the inner side of pool 1 and pool 2.

[0010] Preferably, the blocking structure further includes two extrusion blocks, which are symmetrically installed at both ends of the bottom inside the slide to form a centered clamping of the rubber sleeve.

[0011] Preferably, the extrusion block is a right-angled trapezoid with a smaller top and a larger bottom, and the thickness of the bottom of the extrusion block is 10%-15% of the thickness of the rubber sleeve.

[0012] Preferably, the rubber sleeve has notches on both sides near the extrusion block, and a top plate is fixedly installed inside the notches. The rear wall of the top plate contacts the extrusion block, and the top plate is relatively parallel to the bottom of the extrusion block.

[0013] Preferably, the blocking structure also includes a clamping block, which is slidably connected in the grooves on the bottom two walls of the inner side of the sliding opening. The tail end of the clamping block is connected to a rigid plate. The rear wall of the rigid plate is longitudinally rotatably connected to a shaft via a bearing. There are two shafts, and the two shafts are installed on the rear wall of the rigid plate with their heads relatively close to each other and connected by threads, while their tail ends are relatively separated, forming an "eight" shape. The tail ends of the two shafts are longitudinally rotatably connected to a threaded sleeve, which is parallel to the first and second pools and has a double-ended screw threadedly connected to its inner side. The double-ended screw is longitudinally installed inside the sliding groove and rotatably connected to the upper and lower ends of the inner side of the sliding groove. The top of the double-ended screw is fixedly connected to a connecting rod, which extends vertically upward and protrudes from the top of the partition. The part of the connecting rod located inside the partition rotates relative to the partition.

[0014] Preferably, a handle is also fixedly connected to the top of the connecting rod, and the handle is parallel to the top surface of the partition.

[0015] Compared with the prior art, the present invention provides a double-sided deposition device for gradient nano-nickel-iron alloys, which has the following beneficial effects: 1. This invention uses a lifting rod to push a slider connected to its tail end down the inside of the sliding opening, pressing down on the rubber sleeve that wraps around the nickel-iron alloy block. The elastic deformation of the rubber generates sufficient contact pressure on the contact surface, thus forming a physical seal. At this point, the interference fit of the rubber sleeve is 1%-5% of the diameter of the nickel-iron alloy block. After assembly, they fit tightly with zero gaps, completely isolating the connection between pool 1 and pool 2. A peristaltic pump pumps the electrodeposition solution from the deposition tank into pools 1 and 2. At this point, the liquid levels in pools 1 and 2 rise to no more than one-third of the height of the sliding opening. With the interference fit of the rubber sleeve locking the system, pools 1 and 2 cannot penetrate each other, thus enabling simultaneous electrodeposition on both. This achieves the beneficial effect of simultaneous double-sided electrodeposition of nano-nickel-iron alloy.

[0016] 2. This invention uses a slider to compress a rubber sleeve, gradually squeezing it between two extrusion blocks. The simultaneous interference fit on both sides of the rubber sleeve ensures a tight fit between the rubber sleeve and the two surfaces of the nickel-iron alloy block, with zero gaps. As the screw continuously rotates and presses down on the lifting rod, the slider at the bottom of the lifting rod begins to compress the rubber sleeve and the nickel-iron alloy block inside it. When the force of the screw pressing down is transmitted to the rubber sleeve through the slider, sufficient contact pressure is generated on the contact surface using the elastic deformation of the rubber, thereby forming a physical seal. At this time, the interference of the rubber sleeve is 1%-5% of the diameter of the nickel-iron alloy block. After assembly, the parts fit tightly with zero gaps, completely isolating the connection between pool 1 and pool 2, achieving the beneficial effect that the deposition liquids of double-sided electrodeposited nano-nickel-iron alloys do not interfere with each other. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention; Figure 2This is an enlarged schematic diagram of the partition structure according to Embodiment 1 of the present invention; Figure 3 This is a front sectional view of the slider structure and partition structure according to Embodiment 1 of the present invention; Figure 4 This is an exploded view of the rubber sleeve structure according to Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the overall structure of Embodiment 2 of the present invention; Figure 6 This is a side sectional view of the partition structure in Embodiment 2 of the present invention; Figure 7 This is an exploded side view of the partition structure in Embodiment 2 of the present invention. Figure 8 This is an enlarged schematic diagram of the shaft structure in Embodiment 2 of the present invention.

[0018] Among them: 1. Electrodeposition cell; 101. Cell No. 1; 102. Cell No. 2; 103. Leakage hole; 2. Baffle; 201. Sliding mouth; 202. Sliding block; 203. Baffle; 3. Through port; 301. Rubber sleeve; 303. Notch; 304. Top plate; 4. Extrusion block; 5. Lifting rod; 501. Support; 6. Clamping block; 601. Slide groove; 602. Hard plate; 7. Shaft; 8. Screw sleeve; 9. Double-ended screw; 10. Connecting rod; 11. Handle. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-8 A double-sided deposition device for gradient nano-nickel-iron alloy includes an electrodeposition tank 1. A partition 2 is installed in the middle of the inner side of the electrodeposition tank 1. The partition 2 is horizontally fixed inside the electrodeposition tank 1, dividing the interior of the electrodeposition tank 1 into two parts. The electrodeposition tank 1 is divided into a first tank 101 and a second tank 102 by the partition. A drain hole 103 is installed at the bottom of the inner side of both the first tank 101 and the second tank 102. The drain hole 103 penetrates the electrodeposition tank 1 and is connected to the deposition liquid tank through a pipe. The partition 2 is equipped with a barrier structure to separate the electrodeposition solutions of pool 101 and pool 102. Includes a sliding opening 201, which is opened through the middle of the partition 2. The sliding opening 201 is slidably connected to the inner side of the sliding opening 201, and the bottom surface of the sliding block 202 is fixedly connected to a rubber sleeve 301. The inner side of the rubber sleeve 301 is penetrated by a nickel-iron alloy block. After the nickel-iron alloy block penetrates the rubber sleeve 301, its first and last ends are in pool 101 and pool 102 respectively. The device includes a lifting rod 5, which is fixedly installed on the top surface of the slider 202. The middle end of the lifting rod 5 also passes through a bracket 501 fixedly installed on the top surface of the partition plate 2. A screw hole is opened at the point where the lifting rod 5 passes through the bracket 5. The diameter of the screw hole is larger than that of the lifting rod 5, and a screw rod is threadedly fixedly installed on the top of the lifting rod 5. The bottom of the screw rod is rotatably connected to the top surface of the lifting rod 5.

[0021] The electrodeposition tank 1 is divided into tank 101 and tank 102 by a partition 2. Tanks 101 and 102 are separated from each other. A peristaltic pump, model BT100-3J, is installed between the deposition tank and the pipeline. This model of peristaltic pump is readily available and can be purchased directly from the market. Therefore, its installation and operation methods are as disclosed in its instruction manual, and this application will not describe its installation and operation principles in detail. Further preparation work is carried out before electrodeposition. The nickel-iron alloy block to be electrodeposited on both sides is inserted into the inside of the rubber sleeve 301. At this time, the front and rear ends of the rubber sleeve 301 fit together. At the opening of the through-hole 3 of the baffle 203, the middle section of the nickel-iron alloy block passes through the bottom of the slider 202, pressing down on the lifting rod 5 to cause the slider 202 connected to its tail end to slide down inside the slide 201 until it approaches the bottom of the inner side of the slide 201. At this time, the screw at the top of the lifting rod 5, with its bottom rotatably connected to the top surface of the lifting rod 5, contacts the screw hole. Due to the presence of the thread, the two cannot move directly up and down. At this time, the screw needs to be rotated to make relative movement with the screw hole. Then the screw moves down relative to the screw hole, thereby causing the lifting rod 5 to continue to move down. At this time, the slider 202 slides down inside the slide 201 until it fits against the bottom of the inner side of the slide 201. Due to the continuous rotation and downward pressure of the screw, the lifting rod 202 continues to move down. Lifting rod 5 causes the slider 202 at the bottom of lifting rod 5 to press against the rubber sleeve 301 and the nickel-iron alloy block inside it. Since the nickel-iron alloy block has a higher hardness than the slider 202, there is no risk of damaging the nickel-iron alloy block. When the force of the screw pressing down is transmitted to the rubber sleeve 301 through the slider 202, sufficient contact pressure is generated on the contact surface by utilizing the elastic deformation of the rubber, thereby forming a physical seal. At this time, the interference of the rubber sleeve 301 is 1%-5% of the diameter of the nickel-iron alloy block. After assembly, it fits tightly with zero gaps, completely isolating the connection between pool 101 and pool 102. The electrodeposition in the sedimentation tank is then carried out by a peristaltic pump. The liquid is pumped into pool 101 and pool 202. At this time, the liquid level in pool 101 and pool 202 rises to no more than one-third of the height of the sliding port 201. At this time, the electrodeposition operation can begin. After the electrodeposition is completed, the deposition liquid is pumped out. The deposition liquid flows from the drain hole 103 into the deposition liquid tank, causing the water level in pool 101 and pool 202 to drop. Then, the slider 202 is raised to release the pressure on the rubber sleeve 301, thereby releasing the interference fit between the rubber sleeve 301 and the surface of the nickel-iron alloy block. At this time, the rubber sleeve 301 is pulled out from the inside of the through port 3, and then the nickel-iron alloy block with double-sided deposition is pulled out from the inside of the rubber sleeve 301.

[0022] Furthermore, the front and rear walls of the slider 202 are also fixedly connected to baffles 203. The two baffles 203 cooperate with the slider 202 to form an "I" shape, covering the front and rear walls of the partition 2. The bottom of the baffle 203 is provided with an opening 3, and the inner side of the opening 3 is inserted into the rubber sleeve 301.

[0023] The "I"-shaped structure forms multiple layers of protection for the partition 2, preventing the sediment from flowing through the gap between the baffle 203 and the slider 202 and the sliding port 201. In this application, the baffle 203 is also made of perfluoroether rubber. Furthermore, the liquid level rise of the first pool 101 and the second pool 102 does not exceed one-third of the height of the sliding port 201, that is, just above the height of the top surface of the rubber sleeve 301. Because the rubber sleeve 301 will form an interference fit due to the downward pressure of the slider 202, it not only seals the nickel-iron alloy block from the middle but also seals the entire inner area of ​​the sliding port 201. Therefore, the sediment from the first pool 101 and the second pool 102 cannot meet here.

[0024] Furthermore, partition 2 is made of polypropylene and polyvinyl chloride board, and rubber sleeve 301 is made of perfluoroether rubber.

[0025] Polypropylene and polyvinyl chloride sheets are the materials used to manufacture electroplating tanks. Their chemical stability fully meets the requirements, and they are rigid materials that can withstand liquid pressure as well as the pressure of slider 202. The rubber sleeve 301 made of perfluoroether rubber has high chemical inertness while maintaining the elasticity and sealing ability of rubber. It can withstand almost all chemical media, including strong oxidizing acids such as chromic acid, strong alkalis and organic solvents. Therefore, it is the structure in this application that directly contacts the deposition liquid.

[0026] Furthermore, the bottom of the slide 201 extends vertically downward to two-thirds of the partition 2, and the bottom of the slide 201 is located at the midpoint of the inner side of pool 101 and pool 202.

[0027] Furthermore, the blocking structure also includes two extrusion blocks 4, which are symmetrically installed at both ends of the bottom inside the slide 201 to form a centering clamp on the rubber sleeve 301.

[0028] Furthermore, the extrusion block 4 is a right-angled trapezoid with a smaller top and a larger bottom, and the thickness of the bottom of the extrusion block 4 is 10%-15% of the thickness of the rubber sleeve 301.

[0029] Furthermore, the rubber sleeve 301 has notches 303 on both sides near the extrusion block 4. The top plate 304 is fixedly installed inside the notch 303. The rear wall of the top plate 304 contacts the extrusion block 4, and the bottom of the top plate 304 is relatively parallel to the bottom of the extrusion block 4.

[0030] Furthermore, the blocking structure also includes a clamping block 6, which is slidably connected to the grooves 601 on the bottom two walls of the inner side of the sliding opening 201. The tail end of the clamping block 6 is connected to a rigid plate 602. The rear wall of the rigid plate 602 is longitudinally rotatably connected to a shaft 7 via a bearing. There are two shafts 7, and the two shafts 7 are relatively close at their heads and installed on the rear wall of the rigid plate 602 by means of threaded connection, while their tail ends are relatively separated, forming an "eight" shape. The tail ends of the two shafts 7 are longitudinally rotatably connected to a threaded sleeve 8. The threaded sleeve 8 is parallel to the first pool 101 and the second pool 102, and its inner side is threadedly connected to a double-ended screw 9. The double-ended screw 9 is longitudinally installed inside the groove 601 and is rotatably connected to the upper and lower ends of the inner side of the groove 601. The top of the double-ended screw 9 is fixedly connected to a connecting rod 10. The connecting rod 10 extends vertically upward and extends out from the top of the partition 2. The part of the connecting rod 10 located inside the partition 2 rotates relative to the partition 2.

[0031] Furthermore, a handle 11 is fixedly connected to the top of the connecting rod 10, and the handle 11 is parallel to the top surface of the partition 2.

[0032] Example 1 In this embodiment, the electrodeposition tank 1 is divided into tank 101 and tank 102 by a partition 2. Tank 101 and tank 102 are separated from each other. A peristaltic pump is also installed between the deposition tank and the pipeline. Further preparation work is carried out before electrodeposition. The nickel-iron alloy block to be electrodeposited on both sides is inserted into the inside of the rubber sleeve 301. At this time, the front and rear ends of the rubber sleeve 301 fit into the openings of the two baffles 203. The middle section of the nickel-iron alloy block passes through the bottom of the slider 202. The lifting rod 5 is pressed down to drive the tail end connected to it. The slider 202 slides down the inside of the slide opening 201 until it approaches the bottom of the inside of the slide opening 201. At this time, the screw at the top of the lifting rod 5, with its bottom rotatably connected to the top surface of the lifting rod 5, contacts the screw hole. Due to the presence of the thread, the two cannot move directly up and down. At this time, the screw needs to be rotated to make relative movement with the screw hole. Then the screw moves downward relative to the lifting rod 5, thereby driving it to continue to move downward. At this time, the slider 202 slides down the inside of the slide opening 201 until it fits against the bottom of the inside of the slide opening 201. As the slider 202 squeezes the rubber sleeve 301, it is gradually squeezed into the space between the two extrusion blocks 4, as shown in the attached instruction manual. Figure 3-4As shown, at this time, the top plate 304 and the extrusion block 4 are in direct hard contact to counteract the hard friction of the extrusion block 4 on the rubber sleeve 301, thus avoiding damage to the rubber sleeve 301. At the same time, the meshing state formed by the mutual engagement of the notch 303 and the top plate 304 also allows the top plate 304 to fully compress the rubber sleeve 301 when it is pressed, so that the two sides of the rubber sleeve 301 are synchronously interference-fitted, making the two side surfaces of the rubber sleeve 301 and the nickel-iron alloy block fit tightly together with zero gap. As the screw continues to rotate and press down the lifting rod 5, the slider 202 at the bottom of the lifting rod 5 begins to press the rubber sleeve 301 and the nickel-iron alloy block inside it. Since the nickel-iron alloy block has an alloy hardness exceeding that of the slider 202, there is no risk of compressing and damaging the nickel-iron alloy block. When the force of the screw pressing down is transmitted to the rubber sleeve 301 through the slider 202, sufficient contact pressure is generated on the contact surface by utilizing the elastic deformation of the rubber, thereby forming a physical seal. At this time, the interference fit of the rubber sleeve 301 is 1%-5% of the diameter of the nickel-iron alloy block. After assembly, it fits tightly with zero gaps, completely isolating the connection between pool 101 and pool 102. The electrodeposition liquid in the sedimentation tank is pumped into pool 101 and pool 102 by a peristaltic pump. At this time, the liquid level in pool 101 and pool 102 rises to no more than one-third of the height of the sliding port 201. At this time, the electrodeposition operation can begin. After the electrodeposition is completed, the sedimentation liquid is pumped out. The sedimentation liquid flows from the drain hole 103 into the sedimentation tank, causing the water level in pool 101 and pool 102 to drop. Then, the slider 202 is raised to release the pressure on the rubber sleeve 301, thereby releasing the interference fit between the rubber sleeve 301 and the surface of the nickel-iron alloy block. At this time, the rubber sleeve 301 is pulled out from the inside of the port 3, and then the nickel-iron alloy block with double-sided deposition is pulled out from the inside of the rubber sleeve 301.

[0033] In this embodiment, the nickel-iron alloy block is divided into anode and cathode materials. The anode material is a pure nickel plate, and the cathode is a nickel-iron alloy. The anode electrodeposition area is 3×4 cm, and the cathode electrodeposition area is 3×2 cm. Before electrodeposition, the nickel-iron alloy plate and the nickel plate are pretreated. Specifically, they are polished sequentially with metallographic sandpaper of 400#, 600#, 800#, 1000#, 1200#, 1500#, and 2000# until the surface is bright and free of stains and oil. Ultrasonic cleaning is performed for 5 minutes, followed by acid washing and activation with 18-19% dilute HCl for 5 minutes. The surface is then rinsed with distilled water. The electrodeposition temperature is 55℃, the stir bar speed is 400 rpm, and the pH value is 3.0. The pH value is adjusted every 30 minutes. During the electrodeposition process, the initial solution is prepared according to the "high Ni, low Fe" ratio, such as NiSO4 300 g / L, FeSO4 10 g / L. g / L, begin electrodeposition; first, inject electrodeposition solution into pool 101 and pool 202, ensuring the solution level does not exceed one-third of the height of the sliding opening 201. Press down on the lifting rod 5 to cause the slider 202 connected to its tail end to slide down inside the sliding opening 201 until it approaches the bottom of the inner side of the sliding opening 201. At this point, the screw at the top of the lifting rod 5, with its bottom rotatably connected to the top surface of the lifting rod 5, contacts the screw hole. Due to the presence of the thread, they cannot move directly up and down; therefore, the screw needs to be rotated to create relative movement with the screw hole. Then, the screw moves downward relative to the screw, causing the lifting rod 5 to continue moving downward. At this time, the slider 202 slides down inside the sliding opening 201 until it fits against the bottom of the inner side of the sliding opening 201. As the slider 202 squeezes the rubber sleeve 301, it gradually squeezes into the space between the two extrusion blocks 4, as per the instruction manual. Figure 3-4 As shown, at this time, the top plate 304 and the extrusion block 4 are in direct hard contact to counteract the hard friction of the extrusion block 4 on the rubber sleeve 301, thus avoiding damage to the rubber sleeve 301. At the same time, the meshing state formed by the mutual engagement of the notch 303 and the top plate 304 also allows the top plate 304 to fully compress the rubber sleeve 301 when it is pressed, so that the two sides of the rubber sleeve 301 are synchronously interference-fitted, making the two side surfaces of the rubber sleeve 301 and the nickel-iron alloy block fit tightly together with zero gaps. As the screw continues to rotate and press down the lifting rod 5, the slider 202 at the bottom of the lifting rod 5 begins to compress the rubber sleeve 301 and the nickel-iron alloy block inside it. Since the nickel-iron alloy block has a hardness exceeding that of the slider 202, there is no risk of damaging the nickel-iron alloy block due to pressure. When the force of the screw pressing down is transmitted to the rubber sleeve 301 through the slider 202, sufficient contact pressure is generated on the contact surface by utilizing the elastic deformation of the rubber, thereby forming a physical seal. At this time, the interference fit of the rubber sleeve 301 is 1%-5% of the diameter of the nickel-iron alloy block. After assembly, it fits tightly with zero gaps, completely isolating the connection between pool 101 and pool 102. During the electrodeposition process, a high-concentration FeSO4 solution of 150 g / L is continuously added to the solution using a peristaltic pump, so that the Fe²⁺ concentration in the solution is increased. + As the concentration was gradually increased from 10 g / L to 30 g / L, Ni²+ The concentration decreased slightly due to deposition. A small amount of NiSO4 could be added to maintain the total stability. The final sample was rinsed with distilled water and anhydrous ethanol, dried and stored. Energy dispersive spectroscopy analysis showed that the iron content along the electrodeposition direction increased from 2%-5% in the core to 11%-21% on the surface.

[0034] Example 2 In this embodiment, the electrodeposition tank 1 is divided into tank 101 and tank 102 by a partition 2. Tank 101 and tank 102 are separated from each other. A peristaltic pump is also installed between the deposition tank and the pipeline. Further preparation work is carried out before electrodeposition. The nickel-iron alloy block to be electrodeposited on both sides is inserted into the inside of the rubber sleeve 301. At this time, the front and rear ends of the rubber sleeve 301 fit into the openings 3 of the two baffles 203. The middle section of the nickel-iron alloy block passes through the bottom of the slider 202. Pressing down the lifting rod 5 causes it to drive the slider 202 connected to the tail end to slide at the sliding opening 20. 1. Slide the slider 202 down the inside of the slide 201 until it approaches the bottom of the inner side of the slide 201. At this point, the bottom of the screw at the top of the lifting rod 5 is rotatably connected to the top surface of the lifting rod 5 and comes into contact with the screw hole. Due to the presence of the thread, the two cannot move directly up and down. At this point, the screw needs to be rotated to make relative movement with the screw hole. Then the screw moves down relative to the hole, thereby driving the lifting rod 5 to continue to move down. At this time, the slider 202 slides down the inside of the slide 201 until it fits against the bottom of the inner side of the slide 201. Then, rotate the handle 11 at the top of the two connecting rods 10. When the handle 11 drives the connecting rods 10 to rotate, the double-headed screw 9 at the bottom of the connecting rods 10 also rotates synchronously, as shown in the instruction manual. Figure 7-8 As shown, since the two grooves 601 are symmetrical, the rotation of the two double-ended screws 9 is also relative to each other. Furthermore, as the double-ended screws 9 rotate, they move relative to the upper and lower end sleeves 8. Since the shaft 7 connected to the sleeves 8 is longitudinally connected to the rigid plate 602, the sleeves 8 convert the circular motion into linear motion. The two sleeves 8 move closer to each other when the double-ended screws 9 rotate, as shown in the attached instruction manual. Figure 7As shown, the tail ends of the shafts 7 connected by the two screw sleeves 8 are relatively close, so their front ends will inevitably push forward against the hard plate 602. As the hard plate 602 pushes forward, it drives the front end of the clamping block 6 to push out from the opening of the slide groove 601 and contact both sides of the rubber sleeve 301, and then clamp it, so that both sides of the rubber sleeve 301 are synchronously interference-fitted, making the rubber sleeve 301 and the two side surfaces of the nickel-iron alloy block tightly attached with zero gap. As the screw continues to rotate and press down the lifting rod 5, the slider 202 at the bottom of the lifting rod 5 begins to press down on the rubber sleeve 301 and the nickel-iron alloy block inside it. Since the nickel-iron alloy block has an alloy hardness exceeding that of the slider 202, there is no risk of damaging the nickel-iron alloy block. When the force of the screw pressing down is transmitted to the rubber sleeve 301 through the slider 202, sufficient contact pressure is generated on the contact surface by utilizing the elastic deformation of the rubber, thereby forming a physical seal. The interference fit of the rubber sleeve 301 is 1%-5% of the diameter of the nickel-iron alloy block. After assembly, it fits tightly with zero gaps, completely isolating the connection between pool 101 and pool 102. The electrodeposition solution in the sedimentation tank is pumped into pool 101 and pool 102 by a peristaltic pump. At this time, the liquid level in pool 101 and pool 102 rises to no more than one-third of the height of the sliding port 201. At this time, the electrodeposition operation can begin. After the electrodeposition is completed, the sedimentation solution is pumped out and flows from the drain hole 103 into the sedimentation tank, causing the water level in pool 101 and pool 102 to drop. Then, the slider 202 is raised to release the pressure on the rubber sleeve 301, thereby releasing the interference fit between the rubber sleeve 301 and the surface of the nickel-iron alloy block. At this time, the rubber sleeve 301 is pulled out from the inside of the port 3, and then the nickel-iron alloy block with double-sided deposition is pulled out from the inside of the rubber sleeve 301.

[0035] In this embodiment, the nickel-iron alloy block is divided into anode and cathode materials. The anode material is a pure nickel plate, and the cathode is a nickel-iron alloy. The anode electrodeposition area is 3×4 cm, and the cathode electrodeposition area is 3×2 cm. Before electrodeposition, the nickel-iron alloy plate and the nickel plate are pretreated. Specifically, they are polished sequentially with metallographic sandpaper of 400#, 600#, 800#, 1000#, 1200#, 1500#, and 2000# until the surface is bright and free of stains and oil. Ultrasonic cleaning is performed for 5 minutes, followed by acid washing and activation with 18-19% dilute HCl for 5 minutes. The surface is then rinsed with distilled water. The electrodeposition temperature is 55℃, the stir bar speed is 400 rpm, and the pH value is 3.0. The pH value is adjusted every 30 minutes. During the electrodeposition process, the initial solution is prepared according to the "high Ni, low Fe" ratio, such as NiSO4 300 g / L, FeSO4 10 g / L. g / L, begin electrodeposition; first, inject electrodeposition solution into cell 101 and cell 202, ensuring the solution level does not exceed one-third of the height of the sliding opening 201. Press down on the lifting rod 5 to cause the slider 202 connected to its tail end to slide down the inside of the sliding opening 201 until it approaches the bottom of the inner side of the sliding opening 201. At this point, the screw at the top of the lifting rod 5, with its bottom rotatably connected to the top surface of the lifting rod 5, contacts the screw hole. Due to the presence of the thread, they cannot move directly up and down; therefore, the screw needs to be rotated to create relative movement with the screw hole. Then, the screw moves downward relative to the screw, causing the lifting rod 5 to continue moving downward. At this point, the slider 202 slides down the inside of the sliding opening 201 until it fits against the bottom of the inner side of the sliding opening 201. Then, rotate the handle 11 at the top of the two connecting rods 10. When the handle 11 rotates the connecting rods 10, the double-headed screw 9 at the bottom of the connecting rods 10 also rotates synchronously, as shown in the attached instruction manual. Figure 7-8 As shown, since the two grooves 601 are symmetrical, the rotation of the two double-ended screws 9 is also relative to each other. Furthermore, as the double-ended screws 9 rotate, they move relative to the upper and lower end sleeves 8. Since the shaft 7 connected to the sleeves 8 is longitudinally connected to the rigid plate 602, the sleeves 8 convert the circular motion into linear motion. The two sleeves 8 move closer to each other when the double-ended screws 9 rotate, as shown in the attached instruction manual. Figure 7As shown, the tail ends of the shafts 7 connected by the two screw sleeves 8 are relatively close, so their front ends will inevitably push forward against the hard plate 602. As the hard plate 602 pushes forward, it drives the front end of the clamping block 6 to push out from the opening of the slide groove 601 and contact both sides of the rubber sleeve 301, and then clamp it, so that both sides of the rubber sleeve 301 are synchronously interference-fitted, making the two side surfaces of the rubber sleeve 301 and the nickel-iron alloy block fit tightly together with zero gap. As the screw continues to rotate and press down on the lifting rod 5, the slider 202 at the bottom of the lifting rod 5 begins to press the rubber sleeve 301 and the nickel-iron alloy block inside it, by Since the nickel-iron alloy block has a hardness exceeding that of the slider 202, there is no risk of damaging the nickel-iron alloy block due to pressure. When the force of the screw pressing down is transmitted to the rubber sleeve 301 through the slider 202, sufficient contact pressure is generated on the contact surface by utilizing the elastic deformation of the rubber, thereby forming a physical seal. At this time, the interference fit of the rubber sleeve 301 is 1%-5% of the diameter of the nickel-iron alloy block. After assembly, it fits tightly with zero gaps, completely isolating the connection between pool 101 and pool 102. During the electrodeposition process, a high-concentration FeSO4 solution of 150 g / L is continuously added to the solution using a peristaltic pump, so that the Fe²⁺ concentration in the solution is... + As the concentration was gradually increased from 10 g / L to 30 g / L, Ni² + The concentration decreased slightly due to deposition. A small amount of NiSO4 could be added to maintain the total stability. The final sample was rinsed with distilled water and anhydrous ethanol, dried and stored. Energy dispersive spectroscopy analysis showed that the iron content along the electrodeposition direction increased from 2%-5% in the core to 11%-21% on the surface.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double-sided deposition apparatus for gradient nano-nickel-iron alloy, comprising an electrodeposition tank (1), wherein a partition (2) is installed at the middle of the inner side of the electrodeposition tank (1), the partition (2) is horizontally fixedly installed inside the electrodeposition tank (1), dividing the interior of the electrodeposition tank (1) into two parts, the electrodeposition tank (1) being divided into a first tank (101) and a second tank (102) by the partition, and a drain hole (103) is installed at the bottom of the inner side of both the first tank (101) and the second tank (102), the drain hole (103) penetrating the electrodeposition tank (1) and connected to the deposition liquid tank through a pipe, characterized in that: The partition (2) is equipped with a blocking structure for separating the electrodeposition solutions of the first pool (101) and the second pool (102); Includes a sliding opening (201), which is opened through the middle of the partition (2). The sliding opening (201) is connected to a slider (202) inside the sliding opening (201). The bottom surface of the slider (202) is fixedly connected to a rubber sleeve (301). The inner side of the rubber sleeve (301) is penetrated by a nickel-iron alloy block. The first and last ends of the nickel-iron alloy block after penetrating the rubber sleeve (301) are in pool 1 (101) and pool 2 (102) respectively. The device includes a lifting rod (5), which is fixedly installed on the top surface of the slider (202). The middle end of the lifting rod (5) also passes through a bracket (501) fixedly installed on the top surface of the partition plate (2). A screw hole is opened at the point through which the lifting rod (5) passes. The diameter of the screw hole is larger than that of the lifting rod (5), and a screw rod is threadedly fixedly installed on the top of the lifting rod (5). The bottom of the screw rod is rotatably connected to the top surface of the lifting rod (5).

2. The double-sided deposition equipment for gradient nano-nickel-iron alloys according to claim 1, characterized in that: The front and rear walls of the slider (202) are also fixedly connected to baffles (203). The two baffles (203) cooperate with the slider (202) to form an "I" shape, covering the front and rear walls of the partition (2).

3. The double-sided deposition equipment for gradient nano-nickel-iron alloys according to claim 2, characterized in that: The bottom of the baffle (203) has an opening (3), and the inner side of the opening (3) is inserted into the rubber sleeve (301).

4. The double-sided deposition equipment for gradient nano-nickel-iron alloys according to claim 3, characterized in that: The partition (2) is a polypropylene polyvinyl chloride board, and the rubber sleeve (301) is made of perfluoroether rubber.

5. The double-sided deposition apparatus for gradient nano-nickel-iron alloys according to claim 4, characterized in that: The bottom of the slide (201) extends vertically downward to two-thirds of the partition (2), and the bottom of the slide (201) is located at the midpoint of the inner side of pool 1 (101) and pool 2 (102).

6. A double-sided deposition apparatus for gradient nano-nickel-iron alloys according to claim 4 or 5, characterized in that: The blocking structure also includes two extrusion blocks (4), which are symmetrically installed at both ends of the bottom inside the slide (201) to form a centering clamp on the rubber sleeve (301).

7. The double-sided deposition apparatus for gradient nano-nickel-iron alloys according to claim 6, characterized in that: The extrusion block (4) is a right trapezoid with a smaller top and a larger bottom, and the thickness of the bottom of the extrusion block (4) is 10%-15% of the thickness of the rubber sleeve (301).

8. The double-sided deposition apparatus for gradient nano-nickel-iron alloys according to claim 7, characterized in that: The rubber sleeve (301) has notches (303) on both sides near the extrusion block (4). A top plate (304) is fixedly installed inside the notch (303). The rear wall of the top plate (304) contacts the extrusion block (4), and the bottom of the top plate (304) is relatively parallel to the bottom of the extrusion block (4).

9. The double-sided deposition apparatus for gradient nano-nickel-iron alloys according to claim 4, characterized in that: The blocking structure also includes a clamping block (6), which is slidably connected to a groove (601) on the bottom two walls of the inner side of the sliding opening (201). The tail end of the clamping block (6) is connected to a hard plate (602). The rear wall of the hard plate (602) is longitudinally rotatably connected to a shaft (7) via a bearing. There are two shafts (7), and the two shafts (7) are installed on the rear wall of the hard plate (602) with their heads relatively close to each other and connected by threads, while their tail ends are relatively separated, forming an "eight" shape. The tail ends of the two shafts (7) are longitudinally connected. Rotary connecting sleeve (8), the sleeve (8) is parallel to pool 1 (101) and pool 2 (102), and has a double-ended screw (9) threaded on its inner side. The double-ended screw (9) is installed longitudinally inside the slide groove (601) and is rotatably connected to the upper and lower ends of the slide groove (601). The top of the double-ended screw (9) is fixedly connected to a connecting rod (10). The connecting rod (10) extends vertically upward and extends out from the top of the partition plate (2). The part of the connecting rod (10) located inside the partition plate (2) rotates relative to the partition plate (2).

10. The double-sided deposition apparatus for gradient nano-nickel-iron alloys according to claim 9, characterized in that: A handle (11) is also fixedly connected to the top of the connecting rod (10), and the handle (11) is parallel to the top surface of the partition (2).

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