System and method for testing corrosion rate of high-flux nuclear power material

Abstract

The invention provides a system and method for testing the corrosion rate of a high-flux nuclear power material, and the system comprises a monitoring box which comprises a box body which is internally provided with a corrosion solution; the temperature sensor is arranged in the box body and is used for measuring the temperature of the corrosion solution; the accommodating structure array is arranged at the top of the box body, accommodating holes in the accommodating structure array are communicated with the interior of the box body, and the accommodating structure array is used for arranging a sample to be tested; the resistance probe array corresponds to the accommodating structure array, and the resistance probe array is used for being in contact with a corresponding sample to be detected; the resistance tester is electrically connected with the resistance probe array so as to measure the resistance value of the to-be-tested sample; and the computer is electrically connected with the temperature sensor and the resistance tester and is used for calculating the corrosion rate of the to-be-tested sample according to the temperature of the corrosion solution and the resistance value of the to-be-tested sample. According to the invention, sample batch testing and data continuous recording can be realized, and the testing efficiency and the data reliability are obviously improved.

Description

Technical Field

[0001] This invention relates to the field of material corrosion testing technology, and in particular to a testing system and method for testing the corrosion rate of high-throughput nuclear power materials. Background Technology

[0002] In the field of material corrosion performance evaluation, traditional testing equipment commonly employs the full immersion method (such as the ASTM G31 standard). This method involves completely immersing the sample in a static corrosive medium, periodically removing the sample for cleaning, drying, and weighing, and calculating the average corrosion rate based on the weight change before and after corrosion (weight loss method). This method is simple to operate and inexpensive, and is therefore widely used in material screening, uniform corrosion assessment, and fundamental mechanism research. However, the traditional full immersion method is limited by bottlenecks such as small sample sizes per experiment and lengthy testing cycles, resulting in a significant lag in data generation and failing to meet requirements. Therefore, improvements are needed. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a high-throughput nuclear power material corrosion rate testing system and method to solve the problem of small sample size in a single experiment in the traditional full immersion method for material corrosion assessment.

[0004] To achieve the above and other related objectives, the present invention provides a high-throughput testing system for the corrosion rate of nuclear power materials, comprising:

[0005] The monitoring box includes:

[0006] The enclosure contains a corrosive solution.

[0007] A temperature sensor, installed inside the chamber, measures the temperature of the corrosive solution.

[0008] An array of receiving structures is disposed on the top of the box, and the receiving holes in the array of receiving structures communicate with the interior of the box. The array of receiving structures is used to hold the sample to be tested.

[0009] A resistance probe array, corresponding to the receiving structure array, is used to contact the corresponding sample to be tested;

[0010] A resistance tester is electrically connected to the resistance probe array to measure the resistance value of the sample under test.

[0011] A computer, electrically connected to the temperature sensor and the resistance tester, calculates the corrosion rate of the sample by using the temperature of the corrosive solution and the resistance value of the sample.

[0012] In one embodiment of the present invention, the monitoring box further includes:

[0013] A connecting seat is provided on the top of the housing, and the connecting seat has a through hole that communicates with the interior of the housing;

[0014] A clamp is provided, wherein the receiving structure array is detachably connected to the through hole via the clamp to adjust the height of the receiving structure array within the through hole.

[0015] In one embodiment of the present invention, the multiple receiving holes in the receiving structure array are of different sizes.

[0016] In one embodiment of the present invention, the monitoring box further includes:

[0017] The top cover is disposed on the top of the connector, and the top cover cooperates with the connector. The resistance probe array is disposed through the top cover.

[0018] In one embodiment of the present invention, the resistance probe array comprises a plurality of resistance probes, each of the resistance probes comprising:

[0019] A measuring head, used to contact the sample to be tested;

[0020] A measuring rod, one end of which is connected to the measuring head, and the other end of which is connected to the resistance tester;

[0021] A fixing plate is fixedly connected to the outer wall of the measuring rod;

[0022] An elastic element, one end of which is connected to the fixed plate;

[0023] A protective sheath is slidably fitted onto the outside of the measuring rod, and the other end of the elastic element is connected to the inside of the protective sheath. The protective sheath is fixedly connected to the upper cover.

[0024] In one embodiment of the present invention, the monitoring box further includes a sealing ring disposed between the connecting seat and the box body.

[0025] In one embodiment of the present invention, the testing system further includes:

[0026] A heating tank containing a corrosive solution, wherein the heating tank heats the corrosive solution inside;

[0027] A water inlet pipe connects the heating tank and the housing;

[0028] A water outlet pipe is connected between the heating tank and the housing, forming a circulating corrosive solution between the heating tank, the water inlet pipe, the housing, and the water outlet pipe.

[0029] In one embodiment of the present invention, the corrosion rate r of the sample to be tested cor ,satisfy:

[0030]

[0031] Where R0 is the initial resistance of the sample to be tested, R t Let A be the real-time resistance of the sample under test, A be the cross-sectional area of ​​the sample under test, and ρ0 be the resistivity of the sample under test; ρ t α is the resistivity of the corrosive solution; α is the temperature coefficient of resistance of the sample under test, obtained through calibration experiments; T is the real-time temperature of the corrosive solution; T0 is the initial temperature of the corrosive solution; and t is the test time of the sample under test.

[0032] In one embodiment of the present invention, the test system further includes a switching switch, and each of the resistance probes is electrically connected to the resistance tester through the switching switch.

[0033] This invention also proposes a method for testing the corrosion rate of high-throughput nuclear power materials, using a testing system for the corrosion rate of high-throughput nuclear power materials as described above, comprising:

[0034] A corrosive solution is injected into the interior of the chamber, and the temperature of the corrosive solution is detected by the temperature sensor.

[0035] The sample to be tested is placed in the array of the containment structures, the array of the containment structures is placed on the top of the box, and the sample to be tested is inserted into the corrosion solution.

[0036] The resistance probe array is brought into contact with the sample to be tested in the containment structure array, and the resistance tester is electrically connected to the resistance probe array to measure the resistance value of the sample to be tested.

[0037] The corrosion rate of the sample is calculated based on the temperature of the corrosive solution and the resistance value of the sample.

[0038] As described above, the high-throughput nuclear power material corrosion rate testing system and method of the present invention have the following beneficial effects: A corrosion solution is provided inside the monitoring chamber for corrosion testing of the samples to be tested. A temperature sensor in the monitoring chamber can detect the temperature of the corrosion solution. A receiving structure array is provided on the top of the chamber. Receiving holes in the receiving structure array can be used to place the samples to be tested, which can pass through the receiving holes and be inserted into the corrosion solution. A resistance probe array corresponds to the receiving structure array. When the samples to be tested are arranged in an array on the receiving structure array, the resistance tester can detect the resistance value of the array of samples to be tested at once through the resistance probe array. By using the temperature of the corrosion solution detected by the temperature sensor and the resistance value of the array of samples to be tested detected by the resistance tester, the corrosion rate corresponding to each sample in the array of samples to be tested can be calculated at once. Therefore, the present invention can realize data recording for batch testing of samples, significantly improving testing efficiency and data reliability. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of a high-throughput nuclear power material corrosion rate testing system provided in an embodiment of the present invention.

[0040] Figure 2 This is an exploded schematic diagram of the monitoring box in a high-throughput nuclear power material corrosion rate testing system provided in an embodiment of the present invention.

[0041] Figure 3 This is a schematic diagram of a connector in a high-throughput nuclear power material corrosion rate testing system provided in an embodiment of the present invention.

[0042] Figure 4 This is a schematic diagram of the structure of a resistance probe in a high-throughput nuclear power material corrosion rate testing system provided in an embodiment of the present invention.

[0043] Figure 5 This is a schematic diagram illustrating the steps of a method for testing the corrosion rate of high-throughput nuclear power materials according to an embodiment of the present invention.

[0044] Figure Labels

[0045] 10. Monitoring box; 110. Box body; 120. Display panel; 130. Array of housing structures; 140. Sample to be tested; 150. Connecting seat; 151. Through hole; 160. Sealing ring; 170. Top cover; 180. Temperature sensor;

[0046] 20. Resistance probe array; 210. Resistance probe; 211. Measuring head; 212. Measuring rod; 213. Fixing plate; 214. Elastic element; 215. Protective sheath;

[0047] 30. Resistance tester; 40. Computer; 50. Heating tank; 510. Water inlet pipe; 520. Water outlet pipe; 60. Switch. Detailed Implementation

[0048] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0049] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0050] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the invention. However, it will be apparent to those skilled in the art that embodiments of the invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the invention.

[0051] Please see Figures 1 to 5 This invention proposes a high-throughput testing system and method for measuring the corrosion rate of nuclear power materials. It can be applied in the field of material corrosion testing technology, specifically involving a high-throughput semi-immersion corrosion testing device and a method for real-time calculation of corrosion rate based on current signals. This method is suitable for parallel testing and corrosion analysis of multiple samples. This invention can simultaneously monitor 96 groups of samples in a single experiment, significantly improving data generation efficiency compared to traditional methods. Detailed descriptions are provided below using specific embodiments.

[0052] Please see Figure 1 , Figure 2 and Figure 3 The present invention provides a high-throughput nuclear power material corrosion rate testing system, which may include a monitoring box 10, a resistance probe array 20, a resistance tester 30 and a computer 40.

[0053] Specifically, the monitoring box 10 serves as a reaction device for material corrosion testing of the sample 140 to be tested. The monitoring box 10 may include a box body 110, a temperature sensor 180, and a housing structure array 130.

[0054] The chamber 110 contains a corrosive solution. For example, the chamber 110 may be made of corrosion-resistant titanium alloy and used to hold a boric acid solution (corrosive solution) simulating a nuclear power plant environment. The side wall of the chamber 110 is fitted with a transparent observation window (unlabeled) for real-time monitoring of the sample status.

[0055] Temperature sensor 180 is installed inside chamber 110 to measure the temperature of the corrosive solution. For example, temperature sensor 180 is a PT100 platinum resistance thermometer, fixed to the inner wall of chamber 110, and connected to computer 40 via wires to acquire solution temperature in real time (accuracy ±0.1℃).

[0056] A receiving structure array 130 is disposed on the top of the housing 110. The receiving holes in the receiving structure array 130 communicate with the interior of the housing 110. The receiving structure array 130 is used to hold the sample 140 to be tested. The receiving structure array 130 can be made of insulating ceramic and has a size of 200mm × 200mm. It has 10 × 10 square receiving holes (each with a side length of 5mm) evenly distributed on it. The receiving structure array 130 is installed at the top opening of the housing 110 via a slot, so that the receiving holes communicate with the interior of the housing 110.

[0057] Specifically, the resistance probe array 20 corresponds to the receiving structure array 130, and the resistance probe array 20 is used to contact the corresponding test sample 140. The test sample 140 can be a zirconium alloy rod for nuclear power, with a length of 50 mm. The test sample 140 is vertically inserted into the receiving hole of the receiving structure array 130, with its lower end immersed in the etching solution for about 30 mm.

[0058] For example, the resistance probe array 20 contains 10*10 probes, each corresponding to a housing structure array 130. The measuring head 211 of each resistance probe 210 is made of platinum-iridium alloy and applies a contact pressure of 0.5N to the upper end of the sample.

[0059] Specifically, the resistance tester 30 is electrically connected to the resistance probe array 20 to measure the resistance value of the sample 140. The resistance tester 30 can be a four-wire high-precision resistance meter (range 0.1μΩ-10kΩ), connected to the resistance probe array 20 through a shielded cable, and automatically collects the sample resistance value every 10 minutes.

[0060] Specifically, the computer 40 is electrically connected to the temperature sensor 180 and the resistance tester 30. It calculates the corrosion rate of the sample 140 by using the temperature of the corrosive solution and the resistance value of the sample 140. The computer 40 has built-in corrosion rate calculation software that receives data from the temperature sensor 180 and the resistance tester 30, and can calculate the corrosion rate and generate a curve in real time.

[0061] Therefore, a corrosive solution is provided inside the chamber 110 of the monitoring box 10 for corrosion testing of the sample 140. The temperature sensor 180 in the monitoring box 10 can detect the temperature of the corrosive solution. A receiving structure array 130 is provided on the top of the chamber 110. The receiving holes in the receiving structure array 130 can be used to place the sample 140. The sample 140 can be placed in the receiving structure array 130, passing through the receiving holes and inserted into the corrosive solution. The resistance probe array 20 corresponds to the receiving structure array 130. When the samples 140 are arranged in an array on the receiving structure array 130, the resistance tester 30 can detect the resistance value of the array of samples 140 at once through the resistance probe array 20. By using the temperature of the corrosive solution detected by the temperature sensor 180 and the resistance value of the array of samples 140 detected by the resistance tester 30, the corrosion rate corresponding to each array of samples 140 can be calculated.

[0062] Please see Figure 1 , Figure 2 and Figure 3 In one embodiment of the present invention, the monitoring box 10 further includes a connecting seat 150 and a clamp (not shown in the figure).

[0063] Specifically, the connector 150 is located on the top of the housing 110, and the connector 150 has a through hole 151 that communicates with the interior of the housing 110.

[0064] For example, the connecting seat 150 is a ring-shaped stainless steel component, which is fixed to the top of the housing 110 by a flange. A through hole 151 is opened in its center.

[0065] Specifically, the receiving structure array 130 is detachably connected to the through hole 151 via a clamp to adjust the height of the receiving structure array 130 within the through hole 151, thereby further adjusting the depth to which the sample 140 to be tested is inserted into the corrosion solution.

[0066] For example, the fixture may include four adjustable bolts that pass through the edge of the receiving structure array 130 and engage with the through hole 151. Rotating the bolts allows the receiving structure array 130 to move up and down within the through hole, with an adjustment range of 0-50mm.

[0067] The clamps allow the structure array 130 to move up and down, thus adjusting the depth to which the sample 140 is inserted into the corrosion solution. This allows for comparison of the corrosion rate differences of the sample 140 at different depths.

[0068] Please see Figure 1 , Figure 2 and Figure 3In one embodiment of the present invention, the multiple receiving holes in the receiving structure array 130 are of different sizes, thereby enabling the receiving structure array 130 to be equipped with test samples 140 of different sizes.

[0069] For example, the first type of receiving hole in the receiving structure array 130 has a side length of 5 mm (suitable for rods with a diameter ≤ 2 mm). The second type of receiving hole in the receiving structure array 130 has a side length of 10 mm (suitable for rods with a diameter ≤ 5 mm). The third type of receiving hole in the receiving structure array 130 has a side length of 20 mm (suitable for sheet-like samples).

[0070] If the housing structure array 130 needs to be replaced, the top cover 170 can be removed first, the clamp can be loosened and the old housing structure array 130 can be taken out, and the new housing structure array 130 can be placed in the through hole 151 of the connector 150 and fixed again by the clamp.

[0071] Please see Figure 1 , Figure 2 and Figure 3 In one embodiment of the present invention, the monitoring box 10 further includes a top cover 170.

[0072] The top cover 170 is disposed on top of the connector 150, and the resistance probe array 20 is disposed through the top cover 170. The top cover 170 cooperates with the connector 150 to maintain contact between the resistance probe 210 and the sample 140 to be tested.

[0073] Please see Figure 1 , Figure 2 and Figure 3 In one embodiment of the present invention, the monitoring box 10 further includes a sealing ring 160.

[0074] Specifically, the sealing ring 160 is located between the connecting seat 150 and the housing 110.

[0075] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 In one embodiment of the present invention, the resistance probe array 20 is an array of multiple resistance probes 210, each resistance probe 210 may include a measuring head 211, a measuring rod 212, a fixing plate 213, an elastic element 214 and a protective sheath 215.

[0076] Specifically, such as Figure 3As shown, the measuring head 211 is used to contact the sample 140 to be tested. One end of the measuring rod 212 is connected to the measuring head 211, and the other end is connected to the resistance tester 30. The fixing plate 213 is fixedly connected to the outer wall of the measuring rod 212. One end of the elastic element 214 is connected to the fixing plate 213. The protective sheath 215 is slidably sleeved on the outside of the measuring rod 212, and the other end of the elastic element 214 is connected to the inside of the protective sheath 215. The protective sheath 215 is fixedly connected to the upper cover 170.

[0077] When the top cover 170 is closed, the protective sheath 215 remains relatively fixed to the top cover 170, and the sample 140 to be tested presses upward against the measuring head 211. The measuring head 211 and the measuring rod 212 move upward, the compression spring 214 moves upward and generates a downward elastic force, and the measuring head 211 at the end of the measuring rod 212 remains in close contact with the sample 140 to be tested. The elastic force adapts to changes under vibration conditions to ensure stable contact resistance (fluctuation <0.1%).

[0078] Alternatively, it can be set so that when the sample 140 is at the deepest point of the housing 110, the sample 140 just contacts the measuring head 211, and the compression spring 214 does not deform at this time. With the above settings, the measuring head 211 at the end of the measuring rod 212 can always be kept in close contact with the sample 140, no matter what depth the sample 140 is at.

[0079] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 In one embodiment of the present invention, the testing system further includes a heating tank 50, a water inlet pipe 510, and a water outlet pipe 520.

[0080] Specifically, the heating tank 50 contains a corrosive solution, which is heated by the heating tank 50. For example, the heating tank 50 has a built-in titanium alloy heating tube (power 2kW) to keep the solution at a constant temperature of 300℃±2℃.

[0081] The water inlet pipe 510 is connected between the heating tank 50 and the box 110.

[0082] The outlet pipe 520 connects the heating tank 50 and the housing 110, forming a circulating corrosive solution between the heating tank 50, the inlet pipe 510, the housing 110, and the outlet pipe 520. This constitutes a circulation pipeline, ensuring uniform flow of the medium and consistent temperature distribution.

[0083] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 In one embodiment of the present invention, the corrosion rate r of the sample 140 to be tested is... cor ,satisfy:

[0084]

[0085] Where R0 is the initial resistance of the sample 140 to be tested, R t Let ρ0 be the real-time resistance of the sample 140, A be the cross-sectional area of ​​the sample 140, and ρ0 be the resistivity of the sample 140. t α is the resistivity of the corrosive solution; α is the temperature coefficient of resistance of the sample 140, obtained through calibration experiments; T is the real-time temperature of the corrosive solution; T0 is the initial temperature of the corrosive solution; and t is the testing time of the sample 140.

[0086] Therefore, the real-time temperature T and initial temperature T0 of the corrosive solution can be obtained through the temperature sensor 180. The initial resistance R0 and R1 of the sample 140 can be obtained through the resistance tester 30. t The real-time resistance R of the sample 140 to be tested t Therefore, the corrosion rate r of the sample 140 can be calculated using the above formula. cor .

[0087] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 In one embodiment of the present invention, the testing system further includes a switching switch 60, through which each resistance probe 210 is electrically connected to the resistance tester 30.

[0088] Specifically, by setting the switching switch 60, the resistance tester 30 can scan 100 probes in sequence, and a single full array detection takes 1 second. The computer 40 automatically associates the sample position to generate a corrosion distribution map.

[0089] For example, the corrosion rate of sample number 73 in the array of 140 samples was found to be abnormally high (38% higher than the average), which was located as a local defect in the material, demonstrating the high-throughput detection capability of the system.

[0090] Please see Figure 1 , Figure 2 and Figure 5 In one embodiment of the present invention, a method for testing the corrosion rate of high-throughput nuclear power materials can be proposed. The method using the above-mentioned high-throughput nuclear power material corrosion rate testing system can include the following steps.

[0091] Step S10: Inject a corrosion solution into the inside of the chamber and detect the temperature of the corrosion solution using a temperature sensor.

[0092] For example, inject preheated boric acid solution into chamber 110 until the liquid level is 20mm from the top, activate temperature sensor 180, and computer 40 calibrate the zero point (the output value is adjusted to 0 when the ambient temperature is 25℃).

[0093] Step S20: Set the sample to be tested in the containment structure array. Set the containment structure array on the top of the box and insert the sample to be tested into the corrosion solution.

[0094] Specifically, multiple annealed test samples 140 are inserted into the receiving holes of the receiving structure array 130, for example, 50 annealed test samples 140 are inserted into the receiving holes of the receiving structure array 130.

[0095] Adjust the height of the receiving structure array using the clamps to make the sample immersion depth 40±0.5mm, and install the sealing ring 160 and the top cover 170.

[0096] Step S30: Contact the resistance probe array with the sample to be tested in the containment structure array, electrically connect the resistance tester to the resistance probe array, and measure the resistance value of the sample to be tested.

[0097] Specifically, when the switch 60 is closed, the resistance tester 30 scans the array every 10 minutes according to a preset program. The data is transmitted to the computer 40 in real time and stored as a time-resistance matrix.

[0098] Step S40: Calculate the corrosion rate of the sample based on the temperature of the corrosion solution and the resistance value of the sample.

[0099] Specifically, the computer 40 can generate a corrosion rate curve for a single sample 140 based on the temperature of the corrosion solution and the resistance value of the sample to be tested.

[0100] Therefore, this invention can cover complex working conditions by adjusting the immersion depth of the sample 140 under test through a fixture, changing the receiving structure array 130 to adapt to different samples 140 under test, and controlling the temperature field uniformity through a circulation system. In this invention, 100 samples 140 under test are detected in parallel, which significantly improves efficiency compared to the single probe scheme.

[0101] In summary, this invention discloses a high-throughput testing system and method for measuring the corrosion rate of nuclear power materials. A corrosive solution is contained within a monitoring chamber for corrosion testing of the samples. A temperature sensor within the monitoring chamber detects the temperature of the corrosive solution. An array of receiving structures is located at the top of the chamber. Receiving holes in the array allow the samples to be placed in the corrosive solution, penetrating the holes. A resistance probe array corresponds to the receiving structure array. When the samples are arranged in an array on the receiving structure array, a resistance meter can simultaneously measure the resistance of the sample array using the resistance probe array. By combining the temperature of the corrosive solution detected by the temperature sensor with the resistance of the sample array measured by the resistance meter, the corrosion rate of each sample in the array can be calculated simultaneously. Therefore, this invention enables data recording for batch testing of samples, significantly improving testing efficiency and data reliability. Thus, this invention effectively overcomes the shortcomings of existing technologies and possesses high industrial applicability.

[0102] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A high-throughput testing system for the corrosion rate of nuclear power materials, characterized in that, include: The monitoring box includes: The enclosure contains a corrosive solution. A temperature sensor, installed inside the chamber, measures the temperature of the corrosive solution. An array of receiving structures is disposed on the top of the box, and the receiving holes in the array of receiving structures communicate with the interior of the box. The array of receiving structures is used to hold the sample to be tested. A resistance probe array, corresponding to the receiving structure array, is used to contact the corresponding sample to be tested; A resistance tester is electrically connected to the resistance probe array to measure the resistance value of the sample under test; a computer is electrically connected to the temperature sensor and the resistance tester to calculate the corrosion rate of the sample under test based on the temperature of the corrosion solution and the resistance value of the sample under test.

2. The high-throughput nuclear power material corrosion rate testing system according to claim 1, characterized in that, The monitoring box also includes: A connecting seat is provided on the top of the housing, and the connecting seat has a through hole that communicates with the interior of the housing; A clamp is provided, wherein the receiving structure array is detachably connected to the through hole via the clamp to adjust the height of the receiving structure array within the through hole.

3. The high-throughput nuclear power material corrosion rate testing system according to claim 2, characterized in that, The array of receiving structures contains multiple receiving holes of different sizes.

4. The high-throughput nuclear power material corrosion rate testing system according to claim 2, characterized in that, The monitoring box also includes: The top cover is disposed on the top of the connector, and the top cover cooperates with the connector. The resistance probe array is disposed through the top cover.

5. The high-throughput nuclear power material corrosion rate testing system according to claim 4, characterized in that, The resistance probe array comprises multiple resistance probes, each of which includes: A measuring head, used to contact the sample to be tested; A measuring rod, one end of which is connected to the measuring head, and the other end of which is connected to the resistance tester; A fixing plate is fixedly connected to the outer wall of the measuring rod; An elastic element, one end of which is connected to the fixed plate; A protective sheath is slidably fitted onto the outside of the measuring rod, and the other end of the elastic element is connected to the inside of the protective sheath. The protective sheath is fixedly connected to the upper cover.

6. The high-throughput nuclear power material corrosion rate testing system according to claim 2, characterized in that, The monitoring box also includes a sealing ring, which is disposed between the connecting seat and the box body.

7. The high-throughput nuclear power material corrosion rate testing system according to claim 1, characterized in that, The testing system also includes: A heating tank containing a corrosive solution, wherein the heating tank heats the corrosive solution inside; A water inlet pipe connects the heating tank and the housing; A water outlet pipe is connected between the heating tank and the housing, forming a circulating corrosive solution between the heating tank, the water inlet pipe, the housing, and the water outlet pipe.

8. The high-throughput nuclear power material corrosion rate testing system according to claim 1, characterized in that, The corrosion rate r of the sample to be tested cor ,satisfy: Where R0 is the initial resistance of the sample to be tested, R t Let A be the real-time resistance of the sample under test, A be the cross-sectional area of ​​the sample under test, and ρ0 be the resistivity of the sample under test; ρ t α is the resistivity of the corrosive solution; α is the temperature coefficient of resistance of the sample under test, obtained through calibration experiments; T is the real-time temperature of the corrosive solution; T0 is the initial temperature of the corrosive solution; and t is the test time of the sample under test.

9. The high-throughput nuclear power material corrosion rate testing system according to claim 1, characterized in that, The testing system also includes a switching switch, through which each of the resistance probes is electrically connected to the resistance tester.

10. A method for testing the corrosion rate of high-throughput nuclear power materials, characterized in that, The testing system for high-throughput nuclear power material corrosion rates as described in any one of claims 1 to 9 includes: A corrosive solution is injected into the interior of the chamber, and the temperature of the corrosive solution is detected by the temperature sensor. The sample to be tested is placed in the array of the containment structures, the array of the containment structures is placed on the top of the box, and the sample to be tested is inserted into the corrosion solution. The resistance probe array is brought into contact with the sample to be tested in the containment structure array, and the resistance tester is electrically connected to the resistance probe array to measure the resistance value of the sample to be tested. The corrosion rate of the sample is calculated based on the temperature of the corrosive solution and the resistance value of the sample.

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