In-situ characterization of material surface and interface damage for multi-factor coupled corrosion

Abstract

The application provides a transfer chamber for in-situ characterization of material surface and interface damage under multi-factor coupling corrosion, relates to the technical field of in-situ detection equipment, and aims to solve the technical problems that the load and high-temperature sample cannot be directly transported from an X-ray diffractometer to an electron microscope and that salt mist on the surface of the sample can easily cause corrosion damage to the electron microscope in the prior art. The transfer chamber for in-situ characterization of material surface and interface damage under multi-factor coupling corrosion separates a pre-evacuation chamber from the electron microscope and isolates the transfer chamber and the pre-evacuation chamber by a plug valve, integrates a track assembly, a vacuum pump set and a nitrogen blowing device, constructs a transfer channel specially used for in-situ characterization of corrosion surface and interface damage, moves the sample clamped by a corrosion-resistant loading table through the track assembly, uses the nitrogen blowing device to quickly dry the moisture on the sample, prevents the salt mist from causing damage to the electron microscope when the sample enters the electron microscope, and evacuates the pre-evacuation chamber by the vacuum pump set, so that the corrosion-resistant loading table can clamp the sample to enter the electron microscope.

Description

Technical Field

[0001] This invention relates to the field of in-situ testing equipment technology, specifically to a transfer chamber for in-situ characterization of material surface and interface damage in multi-factor coupled corrosion. Background Technology

[0002] Key components of major marine equipment operate under complex conditions with high humidity, high salinity, temperature, and stress for extended periods, facing corrosion damage from multiple coupled fields of heat, force, and electrochemistry. In particular, the coupling effect of heat on force and salt in the marine atmospheric service environment increases the corrosion rate several times compared to a single environmental factor, leading to nonlinear and unsteady accelerated failure of the materials.

[0003] To reveal the corrosion mechanism of key components of major marine equipment under multi-field coupling of heat, force, and electrochemistry, in-situ characterization of materials in a simulated marine atmospheric environment is urgently needed. To simulate the marine atmospheric service environment, samples need to be placed in a hot saline environment, and the samples require X-ray diffraction in an X-ray diffractometer and micro-area structure and composition analysis in an electron microscope. Therefore, to achieve in-situ / quasi-in-situ characterization, the sample needs to be transferred from the X-ray diffractometer to the electron microscope while preserving the core state of the sample as much as possible. However, since the electron microscope is a vacuum environment, the sample cannot be directly transferred from the X-ray diffractometer to the electron microscope, and salt spray on the sample surface can easily cause corrosion damage to the electron microscope. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a transfer chamber for in-situ characterization of material surface and interface damage in the context of multi-factor coupled corrosion. This solves the technical problems in existing technologies, such as the inability to directly transfer loading stages containing high-temperature samples from X-ray diffractometers to electron microscopes, and the easy corrosion damage to electron microscopes caused by salt spray on sample surfaces.

[0005] To address the aforementioned technical problems, this invention provides a transfer chamber for in-situ characterization of material surface and interface damage in multi-factor coupled corrosion, comprising:

[0006] Transfer room and pre-extraction room;

[0007] The first slide gate valve, the second slide gate valve, and the third slide gate valve are connected to the first slide gate valve at one end of the transfer chamber and are used to connect to the environmental chamber. The other end of the transfer chamber is connected to one end of the pre-extraction chamber through the second slide gate valve. The other end of the pre-extraction chamber is connected to the third slide gate valve and is used to connect to the electron microscope.

[0008] The track assembly is located in the transfer chamber and the pre-extraction chamber;

[0009] A corrosion-resistant loading platform is slidably connected to a track assembly and moves between the transfer chamber and the pre-extraction chamber via the track assembly.

[0010] Vacuum pump unit, connected to the pre-evacuation chamber and used to evacuate the pre-evacuation chamber;

[0011] The nitrogen blowing device is connected to the pre-extraction chamber and is used to dry the moisture in the corrosion-resistant loading platform and the pre-extraction chamber.

[0012] With the above structure, the transfer chamber for in-situ characterization of material surface and interface damage in multi-factor coupled corrosion of the present invention has the following advantages: the pre-evacuation chamber is separated from the electron microscope and the transfer chamber and the pre-evacuation chamber are isolated by a gate valve. The track assembly, vacuum pump group and nitrogen blowing device are integrated to construct a transfer channel dedicated to in-situ characterization of corrosion surface and interface damage. The corrosion-resistant loading stage holds the high-temperature sample and moves through the track assembly. The nitrogen blowing device is used to quickly dry the sample, the corrosion-resistant loading stage and the pre-evacuation chamber to prevent salt spray from causing corrosion damage to the electron microscope when the sample enters the electron microscope. The vacuum pump group can evacuate the pre-evacuation chamber, so that the corrosion-resistant loading stage can hold the sample and enter the electron microscope. Moreover, the hot salt transverse load experiment can continue to be carried out in the transfer chamber, avoiding the impact of long-term heating on the analytical equipment and saving the time occupied by the analytical equipment. The transfer chamber and the environmental chamber can be sealed by the first gate valve, so that the transfer chamber also has the vacuum sealing capability, realizing dual use of vacuum and atmosphere.

[0013] As an improvement, the pre-evacuation chamber is connected to a non-contact optical heating device and a temperature measuring device for heating and measuring the sample on the corrosion-resistant loading stage, respectively. This structure can maintain the original high temperature state of the sample during sample transfer and pre-evacuation, keeping the core state of the sample as unchanged as possible. This ensures that the sample observed by the electron microscope is closer to its condition in the real coupling environment, greatly improving the fidelity of quasi-in-situ analysis and the reliability of the data. It allows the pre-evacuation chamber to simulate the same service conditions in the electron microscope, making it suitable for maintaining the hot salt corrosion environment for a long time and entering the electron microscope for observation at the appropriate time, further reducing the impact of the corrosion environment on the electron microscope.

[0014] As an improvement, the pre-evacuation chamber is connected to a salt spray generator for simulating a salt atmosphere; with this structure, combined with a non-contact optical heating device and a temperature measuring device, the pre-evacuation chamber can be used for hot salt experiments.

[0015] As an improvement, the bottom of the corrosion-resistant loading stage is provided with a hollow section. The non-contact optical heating device is a laser heating device, and the temperature measuring device is an infrared temperature measuring device. The laser heating device includes a two-dimensional galvanometer connected to the pre-extraction chamber. When the corrosion-resistant loading stage is located in the pre-extraction chamber, the two-dimensional galvanometer is located below the corrosion-resistant loading stage, and the bottom of the pre-extraction chamber is provided with a light window. With this structure, the hollow section at the bottom of the corrosion-resistant loading stage provides an unobstructed path for laser heating. The advantage of using a two-dimensional galvanometer as the core heating component is that it can achieve rapid and precise regional heating, with accurate temperature control and good uniformity.

[0016] As an improvement, the track assembly includes a first track, a second track, a third track, and a sliding seat. The first track is located in the transfer chamber, while the second and third tracks are located in the pre-extraction chamber. The first and second tracks are arranged coaxially along the left-right direction, and the third track is arranged along the front-back direction. The upper end of the third track has a first dovetail-shaped protrusion arranged along the front-back direction. The bottom end of the corrosion-resistant loading platform has a first dovetail groove that slides through the first dovetail-shaped protrusion along the front-back direction. The upper ends of both the first and second tracks have second dovetail grooves that extend to the left onto the third track. The bottom of the sliding seat is provided with a second dovetail-shaped protrusion that slides with the second dovetail groove, and the upper end of the sliding seat is provided with a third dovetail-shaped protrusion that slides with the first dovetail groove along the front-back direction. The transfer chamber is slidably connected to a first push rod for pushing the sliding seat into the pre-extraction chamber, and the pre-extraction chamber is slidably connected to a second push rod for pushing the corrosion-resistant loading stage into the electron microscope. With this structure, the track assembly turns in the pre-extraction chamber, making the system more compact when connected to the X-ray diffractometer and electron microscope. The sliding seat, as a transfer structure, ensures that the corrosion-resistant loading stage can be smoothly transferred between the second and third tracks.

[0017] As an improvement, the other end of the pre-extraction chamber can be disconnected from the third gate valve via a connecting component. With this structure, after the sample is transferred to the electron microscope, the other end of the pre-extraction chamber can be separated from the third gate valve, ensuring vibration isolation of the electron microscope and not affecting its technical specifications. This prevents unclear electron microscope data due to vibration of the transfer chamber system during electron microscope testing.

[0018] As an improvement, the present invention also includes a frame, with the pre-extraction chamber slidably connected to the frame, and one end of the transfer chamber being detachable from the second insert valve via a connecting assembly. With this structure, after the sample is transferred to the electron microscope, the two ends of the pre-extraction chamber are separated from the second insert valve and the third insert valve, respectively, and the pre-extraction chamber can be moved away from the electron microscope, further preventing unclear electron microscope data due to vibration of the transfer chamber system during electron microscope testing.

[0019] As an improvement, the connecting assembly includes a connecting plate, a fixing bolt, and a nut. The connecting plate is located on the transfer chamber or the pre-extraction chamber, and the nut is located on the second or third slide gate valve. The fixing bolt passes through the connecting plate and is threadedly connected to the nut. This structure provides a simple, reliable, and low-cost detachable connection solution. This mechanical fastening method ensures a stable connection and guarantees the clamping force required for vacuum sealing. At the same time, the disassembly and assembly process is simple and quick, requiring no special tools.

[0020] As an improvement, an industrial camera is connected to the upper end of the pre-extraction chamber. The pre-extraction chamber has a top viewing window corresponding to the position of the industrial camera. A drive shaft with two sections of oppositely helical threads is rotatably connected to the corrosion-resistant loading stage. Two movable seats for clamping samples are threaded onto the drive shaft. One of the movable seats is connected to a force sensor. An interface for electrical connection to the force sensor is connected to the corrosion-resistant loading stage. A drive rod detachably connected to the drive shaft is rotatably connected to the side wall of the pre-extraction chamber. A drive motor for driving the drive rod is connected to the outer side wall of the pre-extraction chamber. An electric control rod for electrical connection to the control system is connected to the side wall of the pre-extraction chamber. The electric control rod is detachably connected to the interface. With this structure, the movement of the corrosion-resistant loading stage and the sample can be observed through the top viewing window to ensure safety checks during the movement. The load on the sample is changed by the drive motor using the drive rod and the force sensor. The industrial camera can perform corrosion product morphology and in-situ DIC (Digital Image Correlation) analysis through the top viewing window. Moreover, the drive rod and the electric control rod are detachably connected to the drive shaft and the interface, respectively, to ensure the normal transmission of the corrosion-resistant loading stage.

[0021] As an improvement, the pre-extraction chamber is equipped with a side viewing window; with this structure, the movement of the corrosion-resistant loading stage and the sample can be observed through the side viewing window to ensure safe inspection during the movement process. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a side view schematic diagram of the present invention;

[0024] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0025] Figure 4 This is a top view of the track assembly portion of the present invention;

[0026] Figure 5 This is a three-dimensional structural diagram of the second and third track sections in this invention;

[0027] Figure 6 This is a three-dimensional structural diagram of the corrosion-resistant loading stage in this invention;

[0028] Figure 7 This is a schematic diagram of the sliding seat in this invention.

[0029] Reference numerals: 1. Transfer chamber; 2. Pre-extraction chamber; 3. First slide gate valve; 4. Second slide gate valve; 5. Third slide gate valve; 6. Track assembly; 61. First track; 62. Second track; 63. Third track; 64. Sliding seat; 7. Corrosion-resistant loading platform; 8. Vacuum pump assembly; 9. First dovetail protrusion; 10. First dovetail groove; 11. Second dovetail groove; 12. Second dovetail protrusion; 13. Third dovetail protrusion; 15. Second push rod; 16. Frame; 17. Connecting plate; 18. Fixing bolt; 19. Nut; 20. Top viewing window; 21. Side viewing window. Detailed Implementation

[0030] The following is a detailed description of the transfer chamber for in-situ characterization of material surface and interface damage in multi-factor coupled corrosion according to the present invention, with reference to the accompanying drawings.

[0031] like Figures 1 to 7 As shown, the transfer chamber for in-situ characterization of material surface and interface damage for multi-factor coupled corrosion includes a transfer chamber 1, a pre-extraction chamber 2, a first gate valve 3, a second gate valve 4, a third gate valve 5, a track assembly 6, a corrosion-resistant loading stage 7, a vacuum pump group 8, and a nitrogen blowing device. One end of the transfer chamber 1 is connected to the first gate valve 3 and is used to connect to the environmental chamber. The other end of the transfer chamber 1 is connected to one end of the pre-extraction chamber 2 through the second gate valve 4. The other end of the pre-extraction chamber 2 is connected to the third gate valve 5 and is used to connect to the electron microscope. The track assembly 6 is located inside the transfer chamber 1 and the pre-extraction chamber 2. The corrosion-resistant loading stage 7 is slidably connected to the track assembly 6 and moves between the transfer chamber 1 and the pre-extraction chamber 2 through the track assembly 6.

[0032] The corrosion-resistant loading stage 7 is used to clamp the sample. A drive shaft with two oppositely helical threaded sections is rotatably connected to the corrosion-resistant loading stage 7. Two movable seats for clamping the sample are threadedly connected to the drive shaft. The two movable seats are connected to the two threaded sections. A force sensor is connected to one of the movable seats. An interface for electrical connection with the force sensor is connected to the corrosion-resistant loading stage 7. A drive rod that is detachably connected to the drive shaft is rotatably connected to the side wall of the pre-extraction chamber 2. A drive motor that drives the drive rod to rotate is connected to the outer side wall of the pre-extraction chamber 2. An electric control rod for electrical connection with the control system is connected to the side wall of the pre-extraction chamber 2. The electric control rod is detachably connected to the interface. The drive shaft is rotated by the drive motor through the drive rod, causing the two movable seats to move towards each other, thereby clamping the sample and applying stress to the sample.

[0033] An industrial camera is connected to the upper end of the pre-sampling chamber 2. The pre-sampling chamber 2 is equipped with a top viewing window 20 corresponding to the position of the industrial camera, such as... Figure 1As shown, in this embodiment, the top viewing window 20 is located at the upper end of the pre-extraction chamber 2. Similarly, the upper end of the transfer chamber 1 is also equipped with a top viewing window 20. Through the top viewing window 20, the movement of the corrosion-resistant loading stage 7 and the sample can be observed to ensure safety checks during the movement process. The load on the sample is changed by the drive motor using the drive rod and in conjunction with the force sensor. The industrial camera can perform corrosion product morphology and in-situ DIC analysis through the top viewing window 20. Moreover, the drive rod and the electric control rod are detachably connected to the transmission shaft and the interface, respectively, to ensure the normal transmission of the corrosion-resistant loading stage 7. In this embodiment, the drive rod and the electric control rod are both located on the rear side of the pre-extraction chamber 2. The rear end of the transmission shaft is detachably plugged into the drive rod, and the interface is also located at the rear end of the corrosion-resistant loading stage 7. The drive rod and the electric control rod can be slidably connected to the pre-extraction chamber 2 as needed. In addition, the drive rod and the transmission shaft can be driven by a worm gear to achieve self-locking of the two moving seats when the drive rod is separated, maintaining a constant load.

[0034] In addition, such as Figure 1 As shown, the pre-extraction chamber 2 is equipped with a side viewing window 21, through which the corrosion-resistant loading stage 7 and sample movement can be observed to ensure safe inspection during the movement process.

[0035] Vacuum pump unit 8 is connected to pre-evacuation chamber 2 and is used to evacuate pre-evacuation chamber 2 until the vacuum level reaches below 1 Pa. Nitrogen blowing device is connected to pre-evacuation chamber 2 and is used to dry the sample, corrosion-resistant loading stage 7 and moisture in pre-evacuation chamber 2. Nitrogen blowing device uses nitrogen gas and is performed before evacuation.

[0036] The pre-extraction chamber 2 is connected to a non-contact optical heating device and a temperature measuring device for heating and measuring the sample on the corrosion-resistant loading stage 7, respectively. Specifically, the bottom of the corrosion-resistant loading stage 7 has a hollow section. The non-contact optical heating device is a laser heating device, and the temperature measuring device is an infrared temperature measuring device. The laser heating device includes a two-dimensional galvanometer connected to the outside of the pre-extraction chamber 2. When the corrosion-resistant loading stage 7 is located inside the pre-extraction chamber 2, the two-dimensional galvanometer is located below the corrosion-resistant loading stage 7. The bottom of the pre-extraction chamber 2 has a light window. By controlling the two-dimensional galvanometer, continuous heating of any size and position area on the back of the sample can be achieved, with higher temperature uniformity. Synchronous heating with transmission potential can be realized, with heating temperatures ranging from 20 to 850 degrees Celsius and heating areas ranging from 0 to 4 square centimeters. The infrared temperature measuring device adjusts the laser power through negative feedback to ensure the consistency of sample temperature. This allows the pre-extraction chamber 2 to simulate the same service conditions in an electron microscope, suitable for maintaining a hot salt corrosion environment for a long time, allowing timely entry into the electron microscope for observation, and further reducing the impact of the corrosion environment on the electron microscope. Of course, in some other embodiments, the laser heating device can use a heating method that homogenizes the light spot.

[0037] In addition, the pre-extraction chamber 2 is connected to a salt spray generator for simulating a salt atmosphere, which, together with a non-contact optical heating device and a temperature measuring device, enables the pre-extraction chamber 2 to conduct hot salt experiments.

[0038] like Figures 4 to 6 As shown, the track assembly 6 includes a first track 61, a second track 62, a third track 63, and a sliding seat 64. The first track 61 is located in the transfer chamber 1, while the second track 62 and the third track 63 are located in the pre-extraction chamber 2. The first track 61 and the second track 62 are arranged coaxially along the left-right direction, i.e., the second track 62 is located on the extension line of the first track 61. The second track 62 and the first track 61 are respectively located on both sides of the second slide valve 4. The third track 63 is arranged along the front-back direction, and the upper end of the third track 63 is provided with a first dovetail-shaped protrusion 9 arranged along the front-back direction. The bottom end of the corrosion-resistant loading platform 7 is provided with a through-hole in the front-back direction. The first dovetail groove 10 slides with the first dovetail protrusion 9. The upper ends of the first track 61 and the second track 62 are both provided with a second dovetail groove 11 in the left-right direction and the second dovetail groove 11 extends to the left onto the third track 63. The bottom end of the sliding seat 64 is provided with a second dovetail protrusion 12 that slides with the second dovetail groove 11. The upper end of the sliding seat 64 is provided with a third dovetail protrusion 13 that slides with the first dovetail groove 10 in the front-back direction. The transfer chamber 1 is slidably connected to a first push rod for pushing the sliding seat 64 into the pre-extraction chamber 2. The pre-extraction chamber 2 is slidably connected to a second push rod 15 for pushing the corrosion-resistant loading stage 7 into the electron microscope.

[0039] When the corrosion-resistant loading stage 7 is located on the first track 61 and the second track 62, the corrosion-resistant loading stage 7 is connected to the sliding seat 64. The sliding seat 64 is driven by the first push rod to move the corrosion-resistant loading stage 7. When the sliding seat 64 moves to the third track 63, the corrosion-resistant loading stage 7 is directly driven by the second push rod 15 to move along the third track 63. The first push rod can be manually pushed or driven by a motor as needed. Since the second push rod 15 needs to push the corrosion-resistant loading stage 7 into the electron microscope, the second push rod 15 and the corrosion-resistant loading stage 7 are separable. For example, a limiting part is provided on the second push rod 15 and a limiting groove is provided on the corrosion-resistant loading stage 7. By rotating the second push rod 15, the limiting part can be engaged or disengaged from the limiting groove, thereby realizing the connection and separation of the second push rod 15 and the corrosion-resistant loading stage 7. It should be noted that, since the first slide valve 3 is also connected to the environmental chamber, the first push rod can also be slidably connected to the environmental chamber, thereby directly pushing the corrosion-resistant loading platform 7 from the environmental chamber through the transfer chamber 1 into the pre-extraction chamber 2.

[0040] The other end of the pre-extraction chamber 2 can be disconnected from the third slide valve 5 via a connecting assembly.

[0041] Furthermore, the present invention also includes a frame 16, with the pre-extraction chamber 2 slidably connected to the frame 16, and one end of the transfer chamber 1 being detachably connected to the second slide valve 4 via a connecting assembly; in this embodiment, as... Figure 1As shown, the second slide valve 4 is located at the right end of the pre-extraction chamber 2, while the third slide valve 5 is located at the front end of the pre-extraction chamber 2. The sliding direction of the pre-extraction chamber 2 is the front-back direction, so that when the pre-extraction chamber 2 is separated from the second slide valve 4 and the third slide valve 5, it slides away from the electron microscope. Furthermore, connecting components are provided on both the front and rear sides of the second slide valve 4 and the left and right sides of the third slide valve 5.

[0042] like Figure 2 and Figure 3 As shown, the connecting assembly includes a connecting plate 17, a fixing bolt 18, and a nut 19. The connecting plate 17 is located on the transfer chamber 1 or the pre-extraction chamber 2, and the nut 19 is located on the second slide valve 4 or the third slide valve 5. The fixing bolt 18 passes through the connecting plate 17 and is threadedly connected to the nut 19.

[0043] This invention separates the pre-evacuation chamber 2 from the electron microscope. A nitrogen blowing device is used to quickly dry the sample, the corrosion-resistant loading stage 7, and the moisture in the pre-evacuation chamber 2, preventing salt spray corrosion damage to the electron microscope when the sample enters. The vacuum pump group 8 can evacuate the pre-evacuation chamber 2, allowing the corrosion-resistant loading stage 7 to hold the sample and enter the electron microscope, reducing sample transfer time. Furthermore, the hot salt transverse load experiment can continue in the transfer chamber 1, avoiding the impact of prolonged heating on the analytical equipment and saving the time spent on the analytical equipment. The transfer chamber 1 and the environmental chamber can be sealed through the first gate valve 3, giving the transfer chamber 1 a vacuum sealing capability as well. It can operate under both vacuum and atmospheric conditions. After the sample is transferred to the electron microscope, the other end of the pre-evacuation chamber 2 can be separated from the third gate valve 5, thus preventing unclear data acquisition caused by vibration of the transfer chamber system during electron microscope testing. In addition, after the pre-evacuation chamber 2 is separated from the electron microscope, the same laser heating device as the environmental chamber can be installed in the pre-evacuation chamber 2, so that the sample temperature remains unchanged during the vacuuming process, keeping the core state of the sample as unchanged as possible. This ensures that the sample observed by the electron microscope is closer to its condition in the real coupling environment, greatly improving the fidelity and reliability of quasi-in-situ analysis and reducing data distortion caused by changes in conditions during the transfer process.

[0044] The transfer chamber system allows samples to be flexibly switched between X-ray diffraction and SEM (electron microscopy) tests while minimizing changes to their external conditions. It enables interconnection and compatibility between instruments from different manufacturers, enhancing the practicality, compatibility, and portability of the in-situ characterization system for surface and interface damage in thermo-mechanical-chemical / electrochemical coupled corrosion. It enables in-situ / quasi-in-situ observation and testing of the corrosion process without altering external conditions, greatly improving the consistency between simulated experiments and reality during corrosion.

[0045] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above-described embodiment. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. A transfer chamber for in-situ characterization of material surface and interface damage in multi-factor coupled corrosion, characterized in that, include: Transfer chamber (1) and pre-extraction chamber (2); The first slide gate valve (3), the second slide gate valve (4), and the third slide gate valve (5) are connected to the first slide gate valve (3) at one end of the transfer chamber (1) and are used to connect to the environmental chamber. The other end of the transfer chamber (1) is connected to one end of the pre-extraction chamber (2) through the second slide gate valve (4). The other end of the pre-extraction chamber (2) is connected to the third slide gate valve (5) and is used to connect to the electron microscope. A track assembly (6) is disposed in the transfer chamber (1) and the pre-extraction chamber (2). The track assembly (6) includes a first track (61), a second track (62), a third track (63), and a sliding seat (64). The first track (61) is disposed in the transfer chamber (1), the second track (62) and the third track (63) are disposed in the pre-extraction chamber (2). The first track (61) and the second track (62) are arranged in the left-right direction and are coaxially arranged. The third track (63) is arranged in the front-back direction. A corrosion-resistant loading platform (7) is slidably connected to the track assembly (6) and moves between the transfer chamber (1) and the pre-extraction chamber (2) via the track assembly (6); A vacuum pump assembly (8) is connected to the pre-evacuation chamber (2) and is used to evacuate the pre-evacuation chamber (2); A nitrogen blowing device is connected to the pre-extraction chamber (2) and is used to blow dry the moisture in the corrosion-resistant loading platform (7) and the pre-extraction chamber (2); The other end of the pre-extraction chamber (2) can be disconnected from the third slide valve (5) via a connecting assembly; The corrosion-resistant loading stage (7) is rotatably connected to a drive shaft with two threaded sections of opposite direction. The drive shaft is threadedly connected to two movable seats for clamping samples. One of the movable seats is connected to a force sensor. The corrosion-resistant loading stage (7) is connected to an interface electrically connected to the force sensor. The side wall of the pre-extraction chamber (2) is rotatably connected to a drive rod detachably connected to the drive shaft. The outer side wall of the pre-extraction chamber (2) is connected to a drive motor that drives the drive rod to rotate. The side wall of the pre-extraction chamber (2) is connected to an electric control rod for electrical connection to the control system. The electric control rod is detachably connected to the interface. The pre-extraction chamber (2) is connected to a non-contact optical heating device and a temperature measuring device for heating and measuring the sample on the corrosion-resistant loading stage (7), respectively. The pre-extraction chamber (2) is connected to a salt spray generator for simulating a salt-containing atmosphere. The transfer chamber (1) is slidably connected to a first push rod for pushing the sliding seat (64) into the pre-extraction chamber (2), and the pre-extraction chamber (2) is slidably connected to a second push rod (15) for pushing the corrosion-resistant loading stage (7) into the electron microscope.

2. The transfer chamber for in-situ characterization of material surface and interface damage for multi-factor coupled corrosion as described in claim 1, characterized in that, The bottom of the corrosion-resistant loading stage (7) is provided with a hollow part. The non-contact optical heating device is a laser heating device. The temperature measuring device is an infrared temperature measuring device. The laser heating device includes a two-dimensional galvanometer connected to the outside of the pre-extraction chamber (2). When the corrosion-resistant loading stage (7) is located inside the pre-extraction chamber (2), the two-dimensional galvanometer is located below the corrosion-resistant loading stage (7). The bottom of the pre-extraction chamber (2) is provided with a light window.

3. The transfer chamber for in-situ characterization of material surface and interface damage for multi-factor coupled corrosion as described in claim 1, characterized in that, The upper end of the third track (63) is provided with a first dovetail protrusion (9) arranged in the front-back direction. The bottom end of the corrosion-resistant loading platform (7) is provided with a first dovetail groove (10) that slides and engages with the first dovetail protrusion (9) in the front-back direction. The upper ends of the first track (61) and the second track (62) are provided with a second dovetail groove (11) that slides and engages with the second dovetail groove (11) in the left-right direction and the second dovetail groove (11) extends to the left onto the third track (63). The bottom end of the sliding seat (64) is provided with a second dovetail protrusion (12) that slides and engages with the second dovetail groove (11). The upper end of the sliding seat (64) is provided with a third dovetail protrusion (13) that slides and engages with the first dovetail groove (10) in the front-back direction.

4. The transfer chamber for in-situ characterization of material surface and interface damage for multi-factor coupled corrosion as described in claim 1, characterized in that, It also includes a frame (16), the pre-extraction chamber (2) is slidably connected to the frame (16), and one end of the transfer chamber (1) can be detached from the second slide valve (4) through a connecting assembly.

5. The transfer chamber for in-situ characterization of material surface and interface damage for multi-factor coupled corrosion as described in claim 4, characterized in that, The connecting assembly includes a connecting plate (17), a fixing bolt (18), and a nut (19). The connecting plate (17) is located on the transfer chamber (1) or the pre-extraction chamber (2). The nut (19) is located on the second slide valve (4) or the third slide valve (5). The fixing bolt (18) passes through the connecting plate (17) and is threadedly connected to the nut (19).

6. The transfer chamber for in-situ characterization of material surface and interface damage for multi-factor coupled corrosion as described in claim 1, characterized in that, An industrial camera is connected to the upper end of the pre-extraction chamber (2), and the pre-extraction chamber (2) is provided with a top viewing window (20) corresponding to the position of the industrial camera.

7. The transfer chamber for in-situ characterization of material surface and interface damage for multi-factor coupled corrosion as described in claim 1, characterized in that, The pre-extraction chamber (2) is equipped with a side viewing window (21).

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