A stirring device for three-dimensional atom probe electrolytic polishing

Abstract

The invention belongs to the technical field of three-dimensional atomic probes, and specifically is a stirring device for electrolytic polishing of a three-dimensional atomic probe, comprising a stirring base, a motor, a vertical rod, a synchronous wheel, a synchronous belt, a turntable, a driving magnet, an electrolytic barrel, a tempered glass half shell, a sealing ring and a driven magnet; the motor drives the synchronous wheel to rotate, and through the transmission of the synchronous belt, a plurality of synchronous wheels are synchronously rotated, which drives a plurality of vertical rods to rotate synchronously, drives the turntable to rotate, and causes two driving magnets on the turntable to rotate, and through the mutual attraction between the driving magnet and the driven magnet, drives a stirring bar to rotate in the middle of the bottom surface of the electrolytic barrel, drives the electrolyte inside the electrolytic barrel to rotate, so that the electrolyte always keeps a moving mixed state, so that the concentration of each part of the electrolyte is kept consistent, and then the electrolytic corrosion degree of the surface of the sample is kept consistent, thereby reducing the probability of burrs on the surface of the three-dimensional atomic probe and improving the quality of the three-dimensional atomic probe.

Description

Technical Field

[0001] The invention belongs to the technical field of three-dimensional atomic probes, in particular to a stirring device for electrolytic polishing of three-dimensional atomic probes. Background Art

[0002] Under the action of high electrostatic field, the atoms at the tip of the three-dimensional atom probe will be ionized and evaporated from the surface; after being evaporated by the field, the atoms on the sample surface leave the sample surface and fly along the DC electric field to the position sensitive detector. By analyzing the type and position information of each ion, the three-dimensional distribution of the ions in the material is reconstructed; the three-dimensional atom probe is currently the most microscopic analytical instrument, which can perform quantitative analysis of composition and can play an important role in studying many problems of metal materials.

[0003] The three-dimensional atomic probe electrolytic polishing sample is mainly used for common metal materials. First, the sample is made into a long strip sample by wire cutting; then the prepared sample is immersed in a mixed electrolyte of 30% perchloric acid and 70% glacial acetic acid for rough polishing; then the rough-polished sample is immersed in a mixed electrolyte of 5% perchloric acid and 95% ethylene glycol ether for fine polishing, and then cleaned with anhydrous alcohol to obtain a three-dimensional atomic probe.

[0004] When the three-dimensional atomic probe is produced by electrolysis, the electrolyte is in a state of being in progress. When the surface of the sample reacts with the electrolyte for electrolysis, the electrolyte concentration around the sample changes, causing uneven surface corrosion of the sample and burrs on the surface, which reduces the preparation quality of the three-dimensional atomic probe.

[0005] To this end, the present invention provides a stirring device for three-dimensional atomic probe electrolytic polishing. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a stirring device for three-dimensional atomic probe electrolytic polishing described in the present invention comprises a stirring base, a motor, a vertical rod, a synchronous wheel, a synchronous belt, a turntable, a driving magnet and an electrolytic barrel; a plurality of vertical rods are rotatably installed inside the stirring base, a motor is fixedly connected to one side of the interior of the stirring base, a synchronous wheel is fixedly connected to the middle of the vertical rod and the rotating shaft of the motor, a plurality of the outer rings of the synchronous wheels are provided with a synchronous belt, a turntable is fixedly connected to the top outer ring of the vertical rod, driving magnets are provided on both sides of the middle of the turntable, a plurality of electrolytic barrels are evenly arranged on the top surface of the stirring base, and the electrolytic barrels correspond to the turntable; a stirring rod is provided in the middle of the bottom surface of the electrolytic barrel, and the stirring rod comprises a tempered glass half shell, a sealing ring and a driven magnet; the tempered glass half shell is provided to prevent the electrolyte inside the electrolytic barrel from corroding the driven magnet, thereby improving the safety of the stirring rod; the two The tempered glass half shells are connected by a sealing ring, and the tempered glass half shells are threadedly matched with the sealing ring. A driven magnet is arranged inside the tempered glass half shell, and the driving magnet and the driven magnet attract each other. When working, the bracket on the top of the stirring base clamps the sample and immerses it in the electrolytic barrel for electrolysis. The motor drives the synchronous wheel to rotate. Through the transmission of the synchronous belt, multiple synchronous wheels rotate synchronously, drive multiple vertical rods to rotate synchronously, drive the turntable to rotate, and rotate the two driving magnets on the turntable. Through the mutual attraction between the driving magnet and the driven magnet, the stirring bar is driven to rotate in the middle of the bottom surface of the electrolytic barrel, and the electrolyte inside the electrolytic barrel is driven to rotate, so that the electrolyte always keeps a moving mixed state, so that the concentration of each part of the electrolyte is kept consistent, and then the electrolytic corrosion degree of the surface of the sample is kept consistent, the probability of burrs on the surface of the three-dimensional atomic probe is reduced, and the quality of the three-dimensional atomic probe is improved.

[0008] Preferably, straight slots are provided on both sides of the middle of the turntable, the outer wall of the driving magnet is slidably matched with the inner wall of the straight slot, and fixing slots are provided on both sides of the straight slot. The driving magnet is fixed to the turntable by bolts, and the bolts slide through the fixing slots. According to the size of the stirrer, the position of the turntable inside the straight slot is adjusted, and the driving magnet is fixed and locked by bolts passing through the fixing slots, thereby improving the application range of the magnet stirring device.

[0009] Preferably, a cylinder is provided inside between the tempered glass half shells on both sides, push rods are slidably installed at both ends of the cylinder, a spring is fixedly connected between the push rods on both sides, a hexagonal block is fixedly connected to one end of the push rod away from the cylinder, a hexagonal groove is provided on a side of the driven magnet close to the cylinder, and the outer wall of the hexagonal block is slidably matched with the inner wall of the hexagonal groove; when the stirring bar is installed, the hexagonal block is inserted into the inside of the hexagonal groove, so that the two driven magnets are installed on the hexagonal blocks on both sides, and the cylinder is inserted into the tempered glass half shell on one side, so that the driven magnet on this side is pushed into the inside of the tempered glass half shell, and then the tempered glass half shell is sleeved on the other end of the cylinder, so that the sealing ring connects and fixes the tempered glass half shells on both sides, so that the push rod slides into the inside of the cylinder, so that the spring is compressed, and the reaction force generated presses the driven magnets on both sides tightly against the inside of the tempered glass half shell, thereby reducing the probability of the driven magnet sliding inside the tempered glass half shell and improving the stability of the stirring bar when rotating.

[0010] Preferably, an elastic mesh tube is slidably installed inside the tempered glass half shell, and the inner wall of the elastic mesh tube is slidably matched with the outer wall of the driven magnet; the driven magnet and the tempered glass half shell are separated by the elastic mesh tube, which not only reduces the probability of displacement of the driven magnet, but also reduces the probability of the driven magnet hitting the inner wall of the tempered glass half shell.

[0011] Preferably, the outer wall of the cylinder is evenly fixed with a plurality of fixed rails, the outer wall of the fixed rails is slidably mounted with a counterweight plate, and both ends of the cylinder are bolted with clamping plates; the counterweight plate is slidably mounted to the outside of the fixed rails, and at the same time, the counterweight plates are evenly arranged around the outside of the cylinder. After the counterweight plate is installed, the clamping plates are installed to the two ends of the cylinder using bolts, and the counterweight plate is clamped and fixed to adjust the weight of the stirrer, thereby facilitating the staff to change the weight of the stirrer according to the density change of the solution, so that the stirrer can maintain a good stirring effect in different solutions.

[0012] Preferably, a plurality of hemispherical protrusions are evenly fixed to the outer ring of the sealing ring, a hemispherical groove is provided at the center of the bottom surface of the electrolytic barrel, and the hemispherical protrusions and the hemispherical grooves are rotatably matched; the rotatable matching of the hemispherical protrusions and the hemispherical grooves not only facilitates the stirring bar to rotate at the center of the electrolytic barrel, but also reduces the friction between the outer wall of the tempered glass half shell and the bottom surface of the electrolytic barrel, thereby improving the safety of the tempered glass half shell.

[0013] Preferably, a circular ring is provided in the middle of the electrolytic barrel, and a plurality of elastic strips are evenly fixedly connected to the outer ring of the circular ring, the outer wall of the elastic strip is slidably matched with the inner wall of the electrolytic barrel, and the inner wall of the elastic strip is fixedly connected with an anti-corrosion elastic pad; when stirring stops, the electrolyte continues to rotate under the action of inertia, which will mobilize the stirrer to separate from the bottom surface of the electrolytic barrel, so that the stirrer rotates with the rotating electrolyte, which is easy to cause the stirrer to hit the inner wall of the electrolytic barrel, causing damage to the electrolytic barrel and the stirrer. At the same time, the stirrer hits the sample, which is easy to cause damage to the sample; in the embodiment of the present invention, the bottom end of the elastic strip contacts the inner wall of the electrolytic barrel, so that the elastic strip bends, fixes the circular ring inside the electrolytic barrel, and forms a cage-like structure with the elastic strip and the circular ring to isolate the stirrer, thereby reducing the probability of the stirrer hitting the inner wall of the electrolytic barrel and the sample, thereby protecting the stirrer, the electrolytic barrel and the sample; the anti-corrosion elastic pad is provided to reduce the force of the stirrer hitting the elastic strip, thereby reducing the probability of the stirrer being damaged.

[0014] Preferably, a corrosion-resistant suction cup is fixedly connected to the outer wall of the bottom of the elastic strip, and the corrosion-resistant suction cup is attracted to the inner wall of the electrolytic barrel; the bottom end of the elastic strip contacts the inner wall of the electrolytic barrel, so that the elastic force generated by the bending of the elastic strip squeezes the corrosion-resistant suction cup onto the inner wall of the electrolytic barrel, so that the corrosion-resistant suction cup is adsorbed on the inner wall of the electrolytic barrel, thereby reducing the probability of the elastic strip detaching from the inner wall of the electrolytic barrel.

[0015] Preferably, a plurality of baffles are fixedly connected around the top surface of the circular ring, and the baffles are arranged vertically and radially; the rotation of the electrolyte is blocked by the arranged baffles, thereby reducing the degree of rotation of the electrolyte, reducing the probability of the sample shaking when the electrolyte rotates, reducing the probability of the sample colliding, and reducing the probability of short circuiting due to contact with the negative electrode.

[0016] Preferably, a plurality of No. 1 positioning magnets are fixedly connected to the top surface of the stirring base, the No. 1 positioning magnet corresponds to the center of the turntable, and a No. 2 positioning magnet is embedded inside the hemispherical protrusion, and the No. 1 positioning magnet attracts the No. 2 positioning magnet; the mutual attraction between the No. 1 positioning magnet and the No. 2 positioning magnet facilitates the positioning of the stirrer, and at the same time, reduces the probability of the stirrer escaping from the center of the bottom surface of the electrolytic barrel along with the rotating solution.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The stirring device for electrolytic polishing of a three-dimensional atomic probe described in the present invention comprises a stirring base, a motor, a vertical rod, a synchronous wheel, a synchronous belt, a turntable, a driving magnet, an electrolytic barrel, a tempered glass half shell, a sealing ring and a driven magnet; the tempered glass half shell is used to prevent the electrolyte inside the electrolytic barrel from corroding the driven magnet, thereby improving the safety of the stirring rod; the bracket on the top of the stirring base clamps the sample and immerses it in the electrolytic barrel for electrolysis, the motor drives the synchronous wheel to rotate, and through the transmission of the synchronous belt, multiple synchronous wheels rotate synchronously, drive multiple vertical rods to rotate synchronously, drive the turntable to rotate, and drive two driving magnets on the turntable to rotate, and through the mutual attraction between the driving magnet and the driven magnet, drive the stirring rod to rotate in the middle of the bottom surface of the electrolytic barrel, drive the electrolyte inside the electrolytic barrel to rotate, so that the electrolyte always keeps a moving mixed state, so that the concentration of each part of the electrolyte is kept consistent, and then the electrolytic corrosion degree of the surface of the sample is kept consistent, the probability of burrs on the surface of the three-dimensional atomic probe is reduced, and the quality of the three-dimensional atomic probe is improved.

[0019] 2. The stirring device for three-dimensional atomic probe electrolytic polishing described in the present invention is provided with a circular ring and an elastic strip; when stirring stops, the electrolyte continues to rotate under the action of inertia, which will mobilize the stirring rod to separate from the bottom surface of the electrolytic barrel, so that the stirring rod rotates with the rotating electrolyte, which is likely to cause the stirring rod to hit the inner wall of the electrolytic barrel, causing damage to the electrolytic barrel and the stirring rod. At the same time, the stirring rod hits the sample, which is likely to cause damage to the sample; in the embodiment of the present invention, the bottom end of the elastic strip contacts the inner wall of the electrolytic barrel, so that the elastic strip bends, fixes the circular ring inside the electrolytic barrel, and forms a cage-like structure with the elastic strip and the circular ring to isolate the stirring rod, thereby reducing the probability of the stirring rod hitting the inner wall of the electrolytic barrel and the sample, thereby protecting the stirring rod, the electrolytic barrel and the sample; by providing an anti-corrosion elastic pad, the force of the stirring rod hitting the elastic strip is reduced, thereby reducing the probability of the stirring rod being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a three-dimensional diagram of the first embodiment of the present invention;

[0022] Figure 2 is an exploded view of the first embodiment of the present invention;

[0023] Figure 3 This is a diagram of the internal structure of the stirring base in the first embodiment of the present invention;

[0024] Figure 4 is a cross-sectional view of the first embodiment of the present invention;

[0025] Figure 5 yes Figure 4 A partial enlarged view of the middle part;

[0026] Figure 6 is a cross-sectional view of a stirring bar in Embodiment 1 of the present invention;

[0027] Figure 7 is an exploded view of the stirring bar in the first embodiment of the present invention;

[0028] Figure 8 It is a structural diagram of a cylinder and a counterweight plate in Embodiment 1 of the present invention;

[0029] Fig. 9 is a structural diagram of the elastic strip and the baffle in the first embodiment of the present invention;

[0030] Fig.10 is a cross-sectional view of a stirring rod in a second embodiment of the present invention;

[0031] In the figure: 1. stirring base; 2. motor; 3. vertical pole; 4. synchronous wheel; 5. synchronous belt; 6. turntable; 7. driving magnet; 8. electrolytic barrel; 9. tempered glass half shell; 10. sealing ring; 11. driven magnet; 12. straight notch; 13. fixed groove; 14. cylinder; 15. push rod; 16. spring; 17. hexagonal block; 18. hexagonal groove; 19. elastic mesh cylinder; 20. fixed rail; 21. counterweight plate; 22. splint; 23. hemispherical protrusion; 24. hemispherical groove; 25. ring; 26. elastic strip; 27. corrosion-resistant suction cup; 28. baffle; 29. ​​No. 1 positioning magnet; 30. No. 2 positioning magnet. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] Embodiment 1

[0034] like Figures 1 to 6As shown, a stirring device for three-dimensional atomic probe electrolytic polishing described in an embodiment of the present invention comprises a stirring base 1, a motor 2, a vertical rod 3, a synchronous wheel 4, a synchronous belt 5, a turntable 6, a driving magnet 7 and an electrolytic barrel 8; a plurality of vertical rods 3 are rotatably installed inside the stirring base 1, a motor 2 is fixedly connected to one side of the interior of the stirring base 1, a synchronous wheel 4 is fixedly connected to the middle of the vertical rod 3 and the rotating shaft of the motor 2, a plurality of the outer rings of the synchronous wheels 4 are provided with a synchronous belt 5, a turntable 6 is fixedly connected to the top outer ring of the vertical rod 3, and driving magnets 7 are provided on both sides of the middle of the turntable 6, a plurality of electrolytic barrels 8 are evenly arranged on the top surface of the stirring base 1, and the electrolytic barrels 8 correspond to the turntable 6; a stirring rod is arranged in the middle of the bottom surface of the electrolytic barrel 8, and the stirring rod comprises a tempered glass half shell 9, a sealing ring 10 and a driven magnet 11; the tempered glass half shell 9 is provided to prevent the electrolyte inside the electrolytic barrel 8 from corroding the driven magnet 11, thereby improving the safety of the stirring rod; the two tempered The glass half shells 9 are connected by a sealing ring 10, and the tempered glass half shells 9 are threadedly matched with the sealing ring 10. A driven magnet 11 is arranged inside the tempered glass half shell 9, and the driving magnet 7 and the driven magnet 11 attract each other. When working, the bracket on the top of the stirring base 1 clamps the sample and immerses it in the electrolytic barrel 8 for electrolysis. The motor 2 drives the synchronous wheel 4 to rotate. After the transmission of the synchronous belt 5, multiple synchronous wheels 4 rotate synchronously, drive multiple vertical rods 3 to rotate synchronously, drive the turntable 6 to rotate, and make the two driving magnets 7 on the turntable 6 rotate. Through the mutual attraction between the driving magnet 7 and the driven magnet 11, the stirring rod is driven to rotate in the middle of the bottom surface of the electrolytic barrel 8, and the electrolyte inside the electrolytic barrel 8 is driven to rotate, so that the electrolyte always keeps a moving mixed state, so that the concentration of each part of the electrolyte is kept consistent, and then the electrolytic corrosion degree of the surface of the sample is kept consistent, reducing the probability of burrs on the surface of the three-dimensional atomic probe and improving the quality of the three-dimensional atomic probe.

[0035] like Figure 3 and Figure 5 As shown, straight slots 12 are provided on both sides of the middle of the turntable 6, the outer wall of the driving magnet 7 is slidably matched with the inner wall of the straight slot 12, and fixing slots 13 are provided on both sides of the straight slot 12. The driving magnet 7 is fixed to the turntable 6 by bolts, and the bolts slide through the fixing slots 13; according to the size of the stirrer, the position of the turntable 6 inside the straight slot 12 is adjusted, and the driving magnet 7 is fixed and locked by bolts passing through the fixing slots 13, thereby improving the application range of the magnet stirring device.

[0036] like Figure 6 to Figure 7As shown, a cylinder 14 is arranged inside between the tempered glass half shells 9 on both sides, push rods 15 are slidably installed at both ends of the cylinder 14, and a spring 16 is fixedly connected between the push rods 15 on both sides, and a hexagonal block 17 is fixedly connected to one end of the push rod 15 away from the cylinder 14, and a hexagonal groove 18 is opened on the side of the driven magnet 11 close to the cylinder 14, and the outer wall of the hexagonal block 17 is slidably matched with the inner wall of the hexagonal groove 18; when the stirring rod is installed, the hexagonal block 17 is inserted into the inside of the hexagonal groove 18, so that the two driven magnets 11 are installed to the hexagonal blocks 17 on both sides. 7, insert the cylinder 14 into the tempered glass half shell 9 on one side, so that the driven magnet 11 on this side is pushed into the interior of the tempered glass half shell 9, and then the tempered glass half shell 9 is sleeved on the other end of the cylinder 14, so that the sealing ring 10 connects and fixes the tempered glass half shells 9 on both sides, and the push rod 15 slides into the interior of the cylinder 14, so that the spring 16 is compressed, and the reaction force generated presses the driven magnets 11 on both sides into the interior of the tempered glass half shell 9, thereby reducing the probability of the driven magnet 11 sliding inside the tempered glass half shell 9, and improving the stability of the stirring bar when rotating.

[0037] like Figure 6 to Figure 7 As shown, an elastic mesh tube 19 is slidably installed inside the tempered glass half shell 9, and the inner wall of the elastic mesh tube 19 is slidably matched with the outer wall of the driven magnet 11; the driven magnet 11 is separated from the tempered glass half shell 9 by the elastic mesh tube 19, which not only reduces the probability of displacement of the driven magnet 11, but also reduces the probability of the driven magnet 11 hitting the inner wall of the tempered glass half shell 9.

[0038] like Figures 6 to 8 As shown, the outer wall of the cylinder 14 is evenly fixed with a plurality of fixed rails 20, and the outer wall of the fixed rails 20 is slidably mounted with a counterweight plate 21, and both ends of the cylinder 14 are bolted with a clamping plate 22; the counterweight plate 21 is slidably mounted to the outside of the fixed rails 20, and at the same time, the counterweight plate 21 is evenly arranged around the outside of the cylinder 14. After the installation of the counterweight plate 21 is completed, the clamping plate 22 is installed to the two ends of the cylinder 14 with bolts, and the counterweight plate 21 is clamped and fixed to adjust the weight of the stirrer, thereby facilitating the staff to change the weight of the stirrer according to the density change of the solution, so that the stirrer can maintain a good stirring effect in different solutions.

[0039] like Figures 5 to 7 As shown, the outer ring of the sealing ring 10 is evenly fixed with a plurality of hemispherical protrusions 23, and the center of the bottom surface of the electrolytic barrel 8 is provided with a hemispherical groove 24, and the hemispherical protrusion 23 is rotatably matched with the hemispherical groove 24; the hemispherical protrusion 23 and the hemispherical groove 24 are rotatably matched, which not only facilitates the stirring bar to rotate at the center of the electrolytic barrel 8, but also reduces the friction between the outer wall of the tempered glass half shell 9 and the bottom surface of the electrolytic barrel 8, thereby improving the safety of the tempered glass half shell 9.

[0040] like Figure 2 , Figure 5 and Fig. 9 As shown, a ring 25 is provided in the middle of the electrolytic barrel 8, and a plurality of elastic strips 26 are evenly fixed to the outer ring of the ring 25. The outer wall of the elastic strip 26 is slidably matched with the inner wall of the electrolytic barrel 8, and the inner wall of the elastic strip 26 is fixed with an anti-corrosion elastic pad; when stirring stops, the electrolyte continues to rotate under the action of inertia, which will mobilize the stirrer to separate from the bottom surface of the electrolytic barrel 8, so that the stirrer rotates with the rotating electrolyte, which is easy to cause the stirrer to hit the inner wall of the electrolytic barrel 8, causing damage to the electrolytic barrel 8 and the stirrer. At the same time, the stirrer Hitting the sample can easily cause damage to the sample; in the embodiment of the present invention, the bottom end of the elastic strip 26 contacts the inner wall of the electrolytic barrel 8, so that the elastic strip 26 bends, and the ring 25 is fixed inside the electrolytic barrel 8. The elastic strip 26 and the ring 25 form a cage-like structure to isolate the stirrer, thereby reducing the probability of the stirrer hitting the inner wall of the electrolytic barrel 8 and the sample, and protecting the stirrer, the electrolytic barrel 8 and the sample; the anti-corrosion elastic pad is provided to reduce the force of the stirrer hitting the elastic strip 26, thereby reducing the probability of damage to the stirrer.

[0041] like Fig. 9 As shown, the outer wall at the bottom of the elastic strip 26 is fixedly connected with a corrosion-resistant suction cup 27, and the corrosion-resistant suction cup 27 is attracted to the inner wall of the electrolysis barrel 8; the bottom end of the elastic strip 26 contacts the inner wall of the electrolysis barrel 8, so that the elastic force generated by the bending of the elastic strip 26 squeezes the corrosion-resistant suction cup 27 onto the inner wall of the electrolysis barrel 8, so that the corrosion-resistant suction cup 27 is adsorbed on the inner wall of the electrolysis barrel 8, thereby reducing the probability of the elastic strip 26 detaching from the inner wall of the electrolysis barrel 8.

[0042] like Fig. 9 As shown, a plurality of baffles 28 are fixedly connected around the top surface of the ring 25, and the baffles 28 are arranged vertically and radially; the rotation of the electrolyte is blocked by the baffles 28, thereby reducing the degree of rotation of the electrolyte, reducing the probability of the sample shaking when the electrolyte rotates, reducing the probability of the sample colliding, and reducing the probability of short circuiting due to contact with the negative electrode.

[0043] Embodiment 2

[0044] like Fig.10 As shown, compared with Example 1, another implementation of the present invention is: a plurality of No. 1 positioning magnets 29 are fixedly connected to the top surface of the stirring base 1, and the No. 1 positioning magnet 29 corresponds to the center of the turntable 6, and a No. 2 positioning magnet 30 is embedded in the interior of the hemispherical protrusion 23, and the No. 1 positioning magnet 29 and the No. 2 positioning magnet 30 are attracted to each other; the mutual attraction between the No. 1 positioning magnet 29 and the No. 2 positioning magnet 30 facilitates the positioning of the stirrer, and at the same time, reduces the probability that the stirrer will deviate from the center of the bottom surface of the electrolytic barrel 8 along with the rotating solution.

[0045] Working principle: According to the density of the solution, the counterweight plate 21 is slidably installed on the outside of the fixed rail 20. At the same time, the counterweight plate 21 is evenly arranged around the outside of the cylinder 14. After the counterweight plate 21 is installed, the clamping plate 22 is installed to the two ends of the cylinder 14 with bolts, and the counterweight plate 21 is clamped and fixed to adjust the weight of the stirrer; the hexagonal block 17 is inserted into the hexagonal groove 18, so that the two driven magnets 11 are installed on the hexagonal blocks 17 on both sides, and the cylinder 14 is inserted into the tempered glass half shell 9 on one side, so that the driven magnet on this side 11 is pushed into the interior of the tempered glass half shell 9, and then the tempered glass half shell 9 is sleeved on the other end of the cylinder 14, so that the sealing ring 10 connects and fixes the tempered glass half shells 9 on both sides, so that the push rod 15 slides into the interior of the cylinder 14, so that the spring 16 is compressed, and the reaction force generated presses the driven magnets 11 on both sides into the interior of the tempered glass half shell 9; the stirring bar is placed in the interior of the electrolytic barrel 8, and the hemispherical protrusion 23 on the sealing ring 10 slides into the interior of the hemispherical groove 24 through the mutual attraction between the first positioning magnet 29 and the second positioning magnet 30;

[0046] The elastic strip 26 is bent to place the ring 25 inside the electrolytic barrel 8, and the bottom end of the elastic strip 26 contacts the inner wall of the electrolytic barrel 8. The elastic force generated by the bending of the elastic strip 26 squeezes the corrosion-resistant suction cup 27 onto the inner wall of the electrolytic barrel 8, so that the corrosion-resistant suction cup 27 is adsorbed on the inner wall of the electrolytic barrel 8 to isolate the stirrer;

[0047] During electrolysis, the motor 2 drives the synchronous wheel 4 to rotate, and through the transmission of the synchronous belt 5, multiple synchronous wheels 4 rotate synchronously, driving multiple vertical poles 3 to rotate synchronously, driving the turntable 6 to rotate, and the two driving magnets 7 on the turntable 6 rotate. Through the mutual attraction between the driving magnet 7 and the driven magnet 11, the stirring bar is driven to rotate in the middle of the bottom surface of the electrolytic barrel 8, and the electrolyte inside the electrolytic barrel 8 is driven to rotate, so that the electrolyte always maintains a moving mixed state, so that the concentration of each part of the electrolyte is kept consistent, and then the degree of electrolytic corrosion on the surface of the sample is kept consistent, thereby reducing the probability of burrs on the surface of the three-dimensional atomic probe and improving the quality of the three-dimensional atomic probe.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A stirring device for three-dimensional atom probe electrolytic polishing, characterized in that: The invention comprises a stirring base (1), a motor (2), a vertical rod (3), a synchronous wheel (4), a synchronous belt (5), a turntable (6), a driving magnet (7) and an electrolytic barrel (8); a plurality of vertical rods (3) are rotatably mounted inside the stirring base (1); a motor (2) is fixedly connected to one side of the stirring base (1); a synchronous wheel (4) is fixedly connected to the middle of the vertical rod (3) and the rotating shaft of the motor (2); a synchronous belt (5) is arranged on the outer rings of the plurality of synchronous wheels (4); a turntable (6) is fixedly connected to the top outer ring of the vertical rod (3); driving magnets (7) are arranged on both sides of the middle of the turntable (6); a plurality of electrolytic barrels (8) are evenly arranged on the top surface of the stirring base (1); the electrolytic barrels (8) correspond to the turntable (6); A stirring rod is arranged in the middle of the bottom surface of the electrolytic barrel (8), and the stirring rod comprises a tempered glass half shell (9), a sealing ring (10) and a driven magnet (11); the two tempered glass half shells (9) are connected via the sealing ring (10), and the tempered glass half shells (9) and the sealing ring (10) are threadedly matched, and a driven magnet (11) is arranged inside the tempered glass half shell (9), and the driving magnet (7) and the driven magnet (11) attract each other; A cylinder (14) is provided inside between the tempered glass half shells (9) on both sides, push rods (15) are slidably mounted on both ends of the cylinder (14), a spring (16) is fixedly connected between the push rods (15) on both sides, a hexagonal block (17) is fixedly connected to one end of the push rod (15) away from the cylinder (14), a hexagonal groove (18) is provided on one side of the driven magnet (11) close to the cylinder (14), and an outer wall of the hexagonal block (17) is slidably matched with an inner wall of the hexagonal groove (18); An elastic mesh cylinder (19) is slidably mounted inside the tempered glass half shell (9), and the inner wall of the elastic mesh cylinder (19) is slidably matched with the outer wall of the driven magnet (11); A plurality of fixed rails (20) are evenly fixed to the outer wall of the cylinder (14), a counterweight plate (21) is slidably mounted on the outer wall of the fixed rail (20), and clamping plates (22) are bolted to both ends of the cylinder (14); The outer ring of the sealing ring (10) is evenly fixed with a plurality of hemispherical protrusions (23), and the center of the bottom surface of the electrolytic barrel (8) is provided with a hemispherical groove (24), and the hemispherical protrusions (23) are rotatably matched with the hemispherical groove (24).

2. The stirring device for three-dimensional atom probe electrolytic polishing according to claim 1, characterized in that: Straight slots (12) are provided on both sides of the middle of the rotating disk (6); the outer wall of the driving magnet (7) is slidably engaged with the inner wall of the straight slot (12); fixing slots (13) are provided on both sides of the straight slot (12); the driving magnet (7) and the rotating disk (6) are fixed by bolts, and the bolts slide through the fixing slots (13).

3. The stirring device for three-dimensional atom probe electrolytic polishing according to claim 1, characterized in that: A circular ring (25) is provided in the middle of the electrolytic barrel (8), and a plurality of elastic strips (26) are evenly fixedly connected to the outer ring of the circular ring (25). The outer wall of the elastic strip (26) is slidably matched with the inner wall of the electrolytic barrel (8), and the inner wall of the elastic strip (26) is fixedly connected to an anti-corrosion elastic pad.

4. The stirring device for three-dimensional atom probe electrolytic polishing according to claim 3, characterized in that: A corrosion-resistant suction cup (27) is fixedly connected to the outer wall of the bottom of the elastic strip (26), and the corrosion-resistant suction cup (27) is attracted to the inner wall of the electrolysis barrel (8).

5. The stirring device for three-dimensional atom probe electrolytic polishing according to claim 3, characterized in that: A plurality of baffles (28) are fixedly connected around the top surface of the circular ring (25), and the baffles (28) are arranged vertically and radially.

6. The stirring device for three-dimensional atom probe electrolytic polishing according to claim 1, characterized in that: A plurality of first positioning magnets (29) are fixedly connected to the top surface of the stirring base (1), the first positioning magnets (29) corresponding to the center of the turntable (6), and a second positioning magnet (30) is embedded inside the hemispherical protrusion (23), and the first positioning magnets (29) and the second positioning magnets (30) attract each other.

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