Corrosion performance testing method and device for alloy sample plates

Abstract

The embodiments of the present invention relate to the technical field of testing the corrosion resistance of materials, and specifically to a method and device for testing the corrosion performance of an alloy sample plate. In the first aspect, the embodiments of the present invention provide a method for testing the corrosion performance of an alloy sample plate, wherein the alloy sample plate is a honeycomb core having a penetrating porous structure in the thickness direction. In the second aspect, the embodiments of the present invention provide a device for testing the corrosion performance of an alloy sample plate using the method of any embodiment of the first aspect of the present invention, the device comprising: a preheating part, a dissolving part, a deionized water tank, and a mounting part. By using the method and device of the present invention, it is possible to avoid the presence of reaction liquid or reaction product residues in the multiple holes of the alloy sample plate, improve the accuracy of the weighing results of the alloy sample plate after the reaction, thereby ensuring the accuracy and reliability of the test results of the corrosion resistance of the alloy sample plate, and realizing convenient and efficient testing of the corrosion performance of the alloy sample plate.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of testing the corrosion resistance of materials, and more particularly to a method and device for testing the corrosion resistance of an alloy sample plate. Background Art

[0002] The statements herein merely provide background information related to the present disclosure and do not necessarily constitute prior art.

[0003] When the alloy sample plate to be tested is a plate with a penetrating porous structure in the thickness direction, when the traditional corrosion performance test method is used to test the corrosion performance of the alloy sample plate, it is easy for solution or reaction product residues to exist in the porous structure on the surface of the alloy sample plate. When the alloy sample plate after the reaction is weighed, the residues are often included in the result, thereby affecting the accuracy and reliability of the test results, making it difficult to accurately evaluate the corrosion performance of the alloy sample plate. Summary of the Invention

[0004] A brief overview of the present application is provided below to provide a basic understanding of certain aspects of the present application. It should be understood that this overview is not an exhaustive overview of the present application. It is not intended to identify key or important portions of the present application, nor is it intended to limit the scope of the present application. Its purpose is simply to present certain concepts in a simplified form as a prelude to the more detailed description that will be discussed later.

[0005] In a first aspect, an embodiment of the present invention provides a method for testing the corrosion performance of an alloy sample plate, wherein the alloy sample plate is a plate with a penetrating porous structure in the thickness direction, and the method comprises the following steps: S10, weighing the alloy sample plate to be tested to obtain the weight of the alloy sample plate before the test; S20, preheating a predetermined amount of dissolved solution; S30, placing the alloy sample plate in a reaction area; S40, inputting the preheated dissolved solution into the reaction area to react with the alloy sample plate; S50, collecting the reacted liquid and draining the liquid completely, inputting deionized water into the reaction area, the deionized water reacting with the alloy sample plate, and draining the deionized water completely after the reaction; S60, inputting hot air into the reaction area to dry the alloy sample plate; S70, taking the alloy sample plate out of the reaction area, weighing the alloy sample plate after taking it out, and obtaining the weight of the alloy sample plate after the test; S80, determining the corrosion performance of the alloy sample plate based on the weight of the alloy sample plate before the test and the weight of the alloy sample plate after the test.

[0006] In a second aspect, an embodiment of the present invention provides an apparatus for performing corrosion performance testing on an alloy sample plate using the method of any embodiment of the first aspect of the present invention. The alloy sample plate is a plate with a porous structure having a through-type structure in the thickness direction. The apparatus comprises: a preheating member, a dissolving member, a deionized water tank, and a mounting member. The preheating member is configured to preheat the dissolving solution; the dissolving member is configured to provide a reaction space for the alloy sample plate, and the preheated dissolving solution flows into the dissolving member, where the alloy sample plate reacts with the dissolving solution; the deionized water tank is configured to contain deionized water and provide deionized water to the dissolving member; the preheating member, the dissolving member, and the deionized water tank are disposed on the mounting member.

[0007] The corrosion performance testing method and device of the alloy sample plate in the embodiment of the present invention can improve the accuracy of the weighing results of the alloy sample plate after the reaction by avoiding the presence of reaction liquid or reaction product residue in the porous structure on the surface of the alloy sample plate when the alloy sample plate to be tested is a plate with a penetrating porous structure in the thickness direction, thereby ensuring the accuracy and reliability of the test results of the corrosion resistance of the alloy sample plate and realizing convenient and efficient testing of the corrosion performance of the alloy sample plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Other objects and advantages of the present invention will become apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, which will help to provide a comprehensive understanding of the present invention.

[0009] Figure 1 Schematic diagram of the structure of a corrosion performance testing device for an alloy sample plate according to an embodiment of the present invention.

[0010] Figure 2 Schematic diagram of the exploded structure of a dissolving part according to one embodiment of the present invention.

[0011] Figure 3 1 is a schematic structural diagram of various components provided on the cover portion of the dissolving member according to one embodiment of the present invention.

[0012] Figure 4 1 is a cross-sectional view of various components provided on the cover portion of the dissolving member according to one embodiment of the present invention.

[0013] Description of reference numerals:

[0014] 10. Preheating part; 11. Heating unit; 21. Heating unit; 20. Dissolving part; 22. Cover; 221. Motor opening; 222. Liquid level detection opening; 223. Reserved interface; 23. Main body; 24. Displacement sensor; 25. Sealing part; 26. Float; 27. Float connector; 28. Detection part; 29. ​​Motor; 291. Agitator; 30. Deionized water tank; 40. Mounting part; 50. Condensing unit; 51. Chiller; 52. Condensing part; 60. Hot air blower; 70. Air compressor.

[0015] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding. DETAILED DESCRIPTION

[0016] Exemplary embodiments of the present invention are described below with reference to the accompanying drawings. For the sake of clarity and conciseness, not all features of an actual implementation are described in this specification. However, it should be understood that in the process of developing any such actual implementation, many implementation-specific decisions must be made in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and these constraints may vary from implementation to implementation. In addition, it should be understood that although the development work may be very complex and time-consuming, it is a routine task for those skilled in the art who benefit from the disclosure of this application.

[0017] It is also necessary to explain here that, in order to avoid obscuring the present invention due to unnecessary details, the accompanying drawings only show the device structure and / or processing steps that are closely related to the solution according to the present invention, while other details that are not closely related to the present invention are omitted.

[0018] An embodiment of the present invention provides a method for testing the corrosion performance of an alloy sample plate, wherein the alloy sample plate is a plate having a through-type porous structure in the thickness direction. The method includes the following steps S10 to S80.

[0019] S10: Weigh the alloy sample plate to be tested to obtain the weight of the alloy sample plate before the test. S20: Preheat a predetermined amount of dissolved solution. S30: Place the alloy sample plate in the reaction area. S40: Input the preheated dissolved solution into the reaction area to react with the alloy sample plate. S50: Collect the liquid after the reaction and drain the liquid completely, input deionized water into the reaction area, the deionized water reacts with the alloy sample plate, and the deionized water is completely drained after the reaction. S60: Input hot air into the reaction area to dry the alloy sample plate. S70: Take the alloy sample plate out of the reaction area, weigh the alloy sample plate after taking it out, and obtain the weight of the alloy sample plate after the test. S80: Determine the corrosion performance of the alloy sample plate based on the weight of the alloy sample plate before the test and the weight of the alloy sample plate after the test.

[0020] The method provided by an embodiment of the present invention can, when the alloy sample plate to be tested is a plate with a penetrating porous structure in the thickness direction, react the preheated dissolved solution with the alloy sample plate, discharge the reaction liquid, and then input deionized water to react with the alloy sample plate to completely remove the dissolved solution, and then input hot air to dry the alloy sample plate to avoid residual reaction liquid or reaction products in the honeycomb core on the surface of the alloy sample plate, thereby improving the accuracy of the weighing results of the alloy sample plate after the reaction, thereby ensuring the accuracy and reliability of the test results of the corrosion resistance of the alloy sample plate.

[0021] In some embodiments, in step S20, when preheating the predetermined amount of dissolving solution, the preheating temperature can be set to a temperature close to the reaction temperature of the dissolving solution and the alloy sample plate, so that the dissolution experiment is strictly carried out at the required temperature and time. For example, when the reaction temperature is controlled between 30°C and 120°C, the preheating temperature can be set to a range of 30°C to 120°C. The dissolution rate is temperature-dependent. If the rate is slow during the heating process, the resulting corrosion performance will be inaccurate.

[0022] In some embodiments, in step S40, the reaction area may be heated during the reaction process and maintained at a predetermined temperature to ensure that the temperature of the solution does not change significantly after the solution is transferred from the preheating section (zone) to the dissolving section (zone), thereby affecting the reaction effect. For example, the predetermined temperature may be controlled within a range of 30°C to 120°C.

[0023] In some embodiments, in step S50, the reaction area can be stirred during the input of deionized water to completely remove the residual dissolved solution on the surface of the alloy sample plate. At the same time, stirring the reaction area facilitates the removal of residual reaction products on the surface of the alloy sample plate.

[0024] In some embodiments, the operation of step S50 may be repeated multiple times to ensure that the residual dissolved solution and reaction products on the surface of the alloy sample plate are effectively removed, thereby reducing the possibility of residual dissolved solution and reaction products remaining in the honeycomb core of the alloy sample plate. For example, the operation of step S50 may be repeated 1-2 times.

[0025] In some embodiments, in step S40, a condensation process may be performed to condense the dissolved solution that has become gaseous during the reaction to obtain a liquid dissolved solution, thereby recycling the dissolved solution, thereby reducing the consumption of the dissolved solution and increasing the reaction rate. For example, the condensation temperature may be controlled within a range of 5°C to 30°C.

[0026] In step S60, hot air is input into the reaction area to dry the alloy sample plate, thereby removing the deionized water remaining in the porous structure on the surface of the alloy sample plate to avoid affecting the accuracy of the weighing result of the alloy sample plate after the reaction.

[0027] In some embodiments, air pressure can be used to achieve the flow of solution and gas to improve the delivery efficiency of solution and gas, thereby accelerating the reaction rate. At the same time, it ensures large-scale and stable delivery of solution and gas, and further ensures the removal of residual dissolved solution, deionized water and reaction products on the surface of the alloy sample plate.

[0028] In some embodiments, in step S80, the loss of the alloy sample plate during the reaction in the reaction area can be determined based on the weight change of the alloy sample plate before and after the test to judge the corrosion rate of the alloy, thereby determining the corrosion performance of the alloy sample plate.

[0029] The embodiment of the present invention further provides a device for testing the corrosion performance of an alloy sample plate using the method of any embodiment of the first aspect of the present invention, wherein the alloy sample plate is a plate with a penetrating porous structure in the thickness direction. Figure 1 As shown, the device includes: a preheating unit 10, a dissolving unit 20, a deionized water tank 30, and a mounting unit 40. The preheating unit 10 is configured to preheat the dissolving solution; the dissolving unit 20 is configured to provide a reaction space for the alloy sample plate, and the preheated dissolving solution flows into the dissolving unit 20, where the alloy sample plate and the dissolving solution react; the deionized water tank 30 is configured to contain deionized water and provide deionized water to the dissolving unit 20; the preheating unit 10, the dissolving unit 20, and the deionized water tank 30 are mounted on the mounting unit 40.

[0030] The device of an embodiment of the present invention includes a dissolving solution preheated by a preheating part 10, which is input into a dissolving part 20 to react with an alloy sample plate, and after the reaction liquid is discharged, the deionized water in a deionized water tank 30 is input into the dissolving part 20 to react with the alloy sample plate. Due to the action of the deionized water, the dissolving solution can be completely removed, thereby achieving accurate testing of the corrosion performance of the alloy sample plate.

[0031] like Figure 1 As shown, in some embodiments, the mounting member 40 is vertically arranged in three layers. From top to bottom, the preheating unit 10 is located at the highest layer, the dissolving unit 20 is located in the middle layer, and the deionized water tank 30 is located at the lowest layer. In this embodiment, by arranging the preheating unit 10, the dissolving unit 20, and the deionized water tank 30 in layers, the functions required by the device are modularized, making the components that perform different functions relatively independent, thereby facilitating installation and maintenance.

[0032] In some embodiments, multiple preheating units 10, dissolving units 20, and deionized water tanks 30 are provided, each corresponding to the other at corresponding positions in the vertical direction, to facilitate parallel testing of the corrosion properties of multiple alloy sample plates. For example, five preheating units 10 and five dissolving units 20 may be provided to simultaneously test five alloy sample plates in parallel.

[0033] like Figure 1 and Figure 2 As shown, in some embodiments, a heating unit 11 and a heating unit 21 are respectively provided on the preheating part 10 and the dissolving part 20. The heating unit 11 and the heating unit 21 are configured to heat the preheating part 10 and the dissolving part 20 to preheat the dissolving solution, and to heat the dissolving solution during the reaction between the dissolving solution and the alloy sample plate to maintain the reaction temperature.

[0034] In some embodiments, the heating unit 11 and the heating unit 21 can be configured as a cylinder and sleeved over the preheating element 10 and the dissolving element 20 to instantly heat the preheating element 10 and the dissolving element 20 to ensure heating efficiency. For example, the heating unit 11 and the heating unit 21 can be silicone rubber heating belts, which are easy to use and have high heating efficiency.

[0035] like Figure 2 and Figure 3As shown, in some embodiments, the dissolving unit 20 includes a cover 22 and a body 23. The body 23 includes a cavity forming a reaction space, and the cover 22 seals the body 23. The cover 22 forms a motor opening 221, a liquid level detection opening 222, and a reserved interface 223. The liquid level detection opening 222 and the reserved interface 223 are arranged around the motor opening 221 to separate the various components arranged in the body 23 through the motor opening 221, the liquid level detection opening 222, and the reserved interface 223 to prevent them from interfering with each other.

[0036] like Figure 3 and Figure 4 As shown, in some embodiments, the dissolving element 20 may further include a displacement sensor 24, a sealing element 25, a float 26, and a float connector 27. The sealing element 25 is fixedly disposed in the liquid level detection opening 222 and protrudes from the surface of the cover 22. The sealing element 25 covers and seals the liquid level detection opening 222. The displacement sensor 24 is fixed to the sealing element 25, and a portion thereof is disposed in the space formed by the sealing element 25, and a portion thereof is disposed outside the sealing element 25. The float 26 is disposed at one end of the float connector 27, and a detection element 28 is disposed at the other end of the float connector 27. The detection element 28 is at a predetermined distance from the displacement sensor 24. When the liquid in the dissolving element 20 contacts the float 26, the detection element 28 moves until it contacts the displacement sensor 24, so as to facilitate detection of the liquid level in the dissolving element 20.

[0037] The float 26 is configured to rise and fall with the rise and fall of the liquid level in the dissolving unit 20. When the float 26 is displaced with the change in the liquid level, the float connector 27 and the detection unit 28 are displaced synchronously. Specifically, when the liquid level in the dissolving unit 20 rises to a predetermined position, the float 26 rises with the liquid level and drives the float connector 27 and the detection unit 28 to rise until the detection unit 28 contacts the displacement sensor 24. The detection unit 28 sends a signal, which is received by the displacement sensor 24. The displacement sensor 24 then sends a signal to close the solenoid valve. The solenoid valve is used to control the opening and closing of the communication between the dissolving unit 20 and the preheating unit 10 or the deionized water tank 30, so that the dissolving solution or deionized water no longer flows into the dissolving unit 20, thereby achieving automatic control of the solution level in the dissolving unit 20.

[0038] The above structure can not only realize the detection of liquid level, but also realize the detection of liquid level under the condition of sealing, thereby avoiding the overflow of harmful gas.

[0039] like Figure 3 and Figure 4As shown, in some embodiments, the dissolving unit 20 may further include a motor 29. The motor 29 is fixedly disposed in the motor opening 221 and protrudes from the surface of the cover 22, and is used to drive a stirring paddle 291; the stirring paddle 291 is disposed inside the body 23 of the dissolving unit 20 and is connected to the motor 29. When deionized water is input into the dissolving unit 20, the motor 29 drives the stirring paddle 291 to stir the solution in the dissolving unit 20, thereby removing the residual dissolved solution and reaction products on the surface of the alloy sample plate.

[0040] The stirring paddle 291 is arranged inside the main body 23 of the dissolving component 20 through the motor opening 221, and the float 26 is arranged inside the main body 23 of the dissolving component 20 through the liquid level detection opening 222. In addition, the liquid level detection opening 222 is arranged around the motor opening 221, which can avoid mutual interference between the stirring paddle 291 and the float 26, ensure the normal operation of both, and improve the sensitivity of liquid level detection.

[0041] In some embodiments, the apparatus may further include a condensation unit 50 , which is configured to condense the dissolved solution that has become gaseous during the reaction between the preheated solution and the preheated dissolved solution and the alloy sample plate.

[0042] like Figure 1 As shown, the condensing unit 50 includes a chiller 51 and a condensing element 52. The chiller 51 is used to provide cold water to the condensing element 52. Taking the dissolving element as an example, the condensing element 52 is arranged on the preheating element 10, and is provided with an air inlet, a water inlet and an outlet, and a liquid outlet. The air inlet is connected to the dissolving element 20, and the dissolved solution that becomes gaseous during the reaction flows from the dissolving element 20 into the condensing element 52 via the air inlet; the water inlet and the outlet are connected to the chiller 51, and cold water from the chiller 51 flows in and out through the water inlet and the outlet to condense the dissolved solution that has become gaseous; the liquid outlet is connected to the preheating element 10 and the dissolving element 20, and the dissolved solution obtained after condensation flows into the preheating element 10 and the dissolving element 20 via the liquid outlet.

[0043] like Figure 1 As shown, in some embodiments, the apparatus may further include a hot air blower 60 for providing hot air to the dissolving part 20 to dry the alloy sample plate. The hot air blower 60 includes a hot air vent, and the hot air generated by the hot air blower 60 enters the dissolving part 20 through the hot air vent.

[0044] like Figure 1As shown, in some embodiments, the apparatus may further include an air compressor 70, which is configured to provide positive pressure to the pipelines between the preheating unit 10 and the dissolving unit 20. The air compressor 70 includes a pressurizing port, through which the air compressor 70 applies positive pressure to each pipeline, thereby achieving the flow of the solution, that is, the dissolved solution flows from the preheating unit 10 into the dissolving unit 20, and the dissolved solution and deionized water flow out of the dissolving unit 20.

[0045] In some embodiments, the reserved interface 223 of the cover 22 of the dissolving part 20 can be set to multiple, which are respectively connected to the air inlet of the condensing part 52, the liquid outlet of the preheating part 10, the liquid outlet of the deionized water tank 30, the hot air outlet of the hot air blower 60 and the pressurization port of the air compressor 70, so that the dissolved solution that has become gaseous in the dissolving part 20 flows into the condensing part 52, the dissolved solution in the preheating part 10 and the deionized water in the deionized water tank 30 flow into the dissolving part 20, the hot air from the hot air blower 60 enters the dissolving part 20, and the air compressor 70 pressurizes each pipeline.

[0046] In some embodiments, a sealing structure is provided on each component of the cover portion 22 of the dissolving element 20 to prevent the acid gas from overflowing from the main body 23 of the dissolving element 20 during the pressurization process, and to prevent the acid gas from corroding the various components of the cover portion 22, thereby affecting the normal operation of each component and reducing the accuracy of the test results.

[0047] The following is a specific example to further illustrate the process of testing the corrosion performance of the alloy sample plate using the present invention.

[0048] The alloy sample plate to be tested is weighed to obtain the weight of the alloy sample plate before testing. A predetermined amount of the dissolved solution is preheated to a temperature close to the reaction temperature at which the dissolved solution reacts with the alloy sample plate using the heating unit 11 of the preheating unit 10. The preheating range is 30-120°C, and the temperature control accuracy is less than ±1°C.

[0049] The alloy sample plate is placed in the dissolving part 20, and the preheated dissolving solution is input into the dissolving part 20 from the preheating part 10 to react with the alloy sample plate. During the reaction, the dissolving part 20 is heated by the heating unit 21, the heating range is 30℃-120℃, and the temperature control accuracy is less than ±1℃. Among them, the dissolved solution that becomes gaseous during the reaction flows from the dissolving part 20 to the condensing part 52 for condensation treatment. The dissolved solution obtained after condensation flows back to the dissolving part 20, and the condensation temperature is controlled at 5℃-30℃ with a temperature control accuracy of ±1℃. The liquid after the reaction is collected and the liquid is completely discharged. Deionized water is input into the dissolving part 20 through the deionized water tank 30, and the motor 29 is turned on at the same time to make the stirring paddle 291 stir the solution in the dissolving part 20 to remove the residual dissolved solution and reaction products on the surface of the alloy sample plate. After repeating this process 1-2 times, the deionized water is emptied. Hot air is input into the dissolving part 20 through the hot air blower 60 to dry the alloy sample plate.

[0050] The alloy sample plate is removed from the dissolving unit 20 and weighed to obtain the weight of the alloy sample plate after testing. Based on the weight change of the alloy sample plate before and after the test, the loss of the alloy sample plate during the reaction process is determined, thereby determining the corrosion performance of the alloy sample plate.

[0051] Regarding the embodiments of the present invention, it should also be noted that, in the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0052] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. The protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A device for testing the corrosion performance of an alloy sample plate, wherein the alloy sample plate is a plate with a penetrating porous structure in the thickness direction, characterized in that: The device comprises: a preheating element, the preheating element being configured to preheat the dissolved solution, a dissolving part, wherein the dissolving part is configured to provide a reaction space for the alloy sample plate, and the preheated dissolving solution flows into the dissolving part, and the alloy sample plate reacts with the dissolving solution in the dissolving part; a deionized water tank configured to contain deionized water and provide the deionized water to the dissolving element; A mounting part, wherein the preheating part, the dissolving part and the deionized water tank are arranged on the mounting part; The dissolving member includes a cover and a body, the body including a cavity forming a reaction space, the cover enclosing the body, wherein the cover forms a motor opening, a liquid level detection opening, and a reserved interface, and the liquid level detection opening and the reserved interface are arranged around the motor opening; The dissolving parts also include displacement sensors, sealing parts, floats, and float connectors. The sealing member is fixedly arranged on the liquid level detection opening and protrudes from the surface of the cover portion, and the sealing member covers and seals the liquid level detection opening; The displacement sensor is fixed to the sealing member, and a portion of the displacement sensor is disposed in the space formed by the sealing member, and a portion of the displacement sensor is disposed outside the sealing member. The float is arranged at one end of the float connector, and a detection member is arranged at the other end of the float connector. The detection member is at a predetermined distance from the displacement sensor. When the liquid in the dissolving element contacts the float, the detecting element moves until it contacts the displacement sensor.

2. The device according to claim 1, characterized in that The installation component forms three layers of arrangement space in the vertical direction. From top to bottom, the preheating component is arranged on the highest layer, the dissolving component is arranged on the middle layer, and the deionized water tank is arranged on the lowest layer.

3. The device according to claim 2, characterized in that There are a plurality of the preheating components, the dissolving components and the deionized water tank, which are arranged in a one-to-one correspondence with each other at corresponding positions in the vertical direction.

4. The device according to claim 1, characterized in that The preheating member and the dissolving member are respectively provided with heating units, and the heating units are configured to heat the preheating member and the dissolving member.

5. The device according to claim 1, characterized in that A sealing structure is provided on each component of the cover of the dissolving element so as to prevent the acid gas from overflowing from the main body during the pressurization process of the dissolving element.

6. A method for testing the corrosion performance of an alloy sample plate using the device according to any one of claims 1 to 5, wherein the alloy sample plate is a plate with a penetrating porous structure in the thickness direction, characterized in that: The steps include: S10: Weighing the alloy sample plate to be tested to obtain the weight of the alloy sample plate before testing; S20: preheating a predetermined amount of dissolving solution; S30: placing the alloy sample plate into the reaction area; S40: inputting the preheated dissolved solution into the reaction area to react with the alloy sample plate; S50: collecting the liquid after the reaction and draining it completely, inputting deionized water into the reaction area, causing the deionized water to react with the alloy sample plate, and draining the deionized water completely after the reaction; S60: Inputting hot air into the reaction area to dry the alloy sample plate; S70: taking out the alloy sample plate from the reaction area, and weighing the taken-out alloy sample plate to obtain the weight of the alloy sample plate after testing; S80: Determine the corrosion performance of the alloy sample plate according to the weight of the alloy sample plate before the test and the weight of the alloy sample plate after the test.

7. The method according to claim 6, characterized in that In step S40, during the reaction process, the reaction region is heated and maintained at a predetermined temperature.

8. The method according to claim 6, characterized in that In step S50 , during the process of inputting deionized water, the reaction area is stirred to completely remove the residual dissolved solution on the surface of the alloy sample plate.

9. The method according to claim 6, characterized in that The operation of step S50 is repeated multiple times.

10. The method according to claim 7, characterized in that In step S40, a condensation process is further performed to condense the dissolved solution that has become gaseous.

11. The method according to any one of claims 6 to 10, characterized in that: Air pressure is used to achieve the flow of solution and gas.

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