Method for measuring metal surface impedance based on conductive gel medium electrochemical impedance spectroscopy

Abstract

The invention relates to the technical field of material science and electrochemistry, in particular to a method for measuring metal surface impedance based on a conductive gel medium electrochemical impedance spectroscopy, and the method comprises the following steps: taking a metal sample as a working electrode, taking conductive gel as an electrolyte, and measuring the impedance of the metal surface by using an electrochemical impedance spectroscopy; connecting a reference electrode and an auxiliary electrode with the metal sample and the conductive gel; applying a target voltage or a target current to the metal sample; on the basis of an electrochemical interface formed by the conductive gel and the metal surface of the metal sample, response data of current response changing along with frequency is obtained; based on the response data, a metal surface impedance measurement of the metal sample is generated. Therefore, the problems that in the related technology, a large number of ions exist in the sodium chloride solution, the ions possibly interact with ions on the surface of the metal sample to be tested, consequently, the test result is interfered, in addition, the sodium chloride solution is prone to flowing as liquid, and the requirements for the shape and sealing performance of the electrolyte container are high are solved.

Description

Technical Field

[0001] The present application relates to the fields of material science and electrochemical technology, and in particular to a method for measuring metal surface impedance based on electrochemical impedance spectroscopy of a conductive gel medium. Background Art

[0002] The impedance characteristics of metal surfaces are important indicators for evaluating key properties of metal samples, such as corrosion resistance, electrical conductivity, and interface reaction kinetics. The surface impedance of metal samples will change under different environmental conditions, such as corrosive media, high temperature and high pressure environments, and these changes directly affect the stability and service life of metal materials. Therefore, it is particularly important to develop an accurate and reliable metal surface impedance measurement method and device.

[0003] In the related art, a three-electrode system (including a working electrode (the surface of the metal sample to be tested), a reference electrode and an auxiliary electrode) is adopted to apply a small-amplitude sinusoidal potential disturbance signal to the working electrode, and the potential difference or current response between the working electrode and the reference electrode is measured, thereby calculating the impedance of the metal surface of the metal sample. The electrolyte solution commonly used in traditional electrochemical impedance spectroscopy measurements is a sodium chloride solution.

[0004] However, in the related art, there are a large number of ions in the sodium chloride solution, which may interact with the ions on the surface of the metal sample to be tested, causing interference with the test results. In addition, as a liquid, the sodium chloride solution is easy to flow, and has high requirements on the shape and sealing of the electrolyte container, which urgently needs to be improved. Summary of the invention

[0005] The present application provides a method for measuring metal surface impedance based on electrochemical impedance spectroscopy of a conductive gel medium, in order to solve the problems in the related art that a large number of ions are present in the sodium chloride solution, and these ions may interact with the ions on the surface of the metal sample to be tested, causing interference with the test results; in addition, the sodium chloride solution is easy to flow as a liquid, and has high requirements on the shape and sealing of the electrolyte container.

[0006] The first aspect of the present application provides a method for measuring metal surface impedance based on electrochemical impedance spectroscopy of a conductive gel medium, comprising the following steps: using a metal sample as a working electrode and a conductive gel as an electrolyte, connecting a reference electrode and an auxiliary electrode to the metal sample and the conductive gel; applying a target voltage or a target current to the metal sample; based on the electrochemical interface formed between the conductive gel and the metal surface of the metal sample, obtaining response data of a current response varying with frequency; and generating a metal surface impedance measurement result of the metal sample based on the response data.

[0007] Optionally, in one embodiment of the present application, the conductive gel may include, but is not limited to, at least one of a gel matrix, a saline solution, a gelling agent, a thickener, and a moisturizer.

[0008] Optionally, in one embodiment of the present application, the obtaining of response data of the current response varying with frequency includes: controlling an electrochemical impedance spectroscopy measuring device to scan the electrochemical impedance spectrum at a preset scanning rate within a preset frequency range to obtain the response data.

[0009] Optionally, in one embodiment of the present application, generating the metal surface impedance measurement result of the metal sample based on the response data includes: inputting the response data into a pre-trained data analysis model to obtain the metal surface impedance measurement result.

[0010] The second aspect of the present application provides a device for measuring metal surface impedance based on electrochemical impedance spectroscopy of a conductive gel medium, including: a setting module, used to use a metal sample as a working electrode and a conductive gel as an electrolyte, and connect a reference electrode and an auxiliary electrode to the metal sample and the conductive gel; an application module, used to apply a target voltage or a target current to the metal sample; an acquisition module, used to acquire response data of a current response varying with frequency based on an electrochemical interface formed between the conductive gel and the metal surface of the metal sample; and a generation module, used to generate a metal surface impedance measurement result of the metal sample based on the response data.

[0011] Optionally, in one embodiment of the present application, the conductive gel may include, but is not limited to, at least one of a gel matrix, a saline solution, a gelling agent, a thickener, and a moisturizer.

[0012] Optionally, in one embodiment of the present application, the acquisition module includes: a generation unit, which is used to control the electrochemical impedance spectroscopy measurement device to scan the electrochemical impedance spectrum within a preset frequency range at a preset scanning rate to obtain the response data.

[0013] Optionally, in one embodiment of the present application, the generating module includes: an acquiring unit, configured to input the response data into a pre-trained data analysis model to acquire the metal surface impedance measurement result.

[0014] The third aspect of the present application provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method for measuring metal surface impedance based on electrochemical impedance spectroscopy of a conductive gel medium as described in the above embodiment.

[0015] The fourth aspect of the present application provides a computer-readable storage medium, which stores a computer program. When the program is executed by a processor, it implements the above method for measuring metal surface impedance based on electrochemical impedance spectroscopy of conductive gel medium.

[0016] The fifth aspect of the present application provides a computer program product, including a computer program, which, when executed, implements the above method for measuring metal surface impedance based on electrochemical impedance spectroscopy of a conductive gel medium.

[0017] The embodiment of the present application can use the conductive gel as an electrolyte to form a stable electrochemical interface with the metal surface of the metal sample, and by analyzing and measuring the metal surface impedance measurement results of the metal sample, a rapid and accurate measurement of the metal surface impedance is achieved. In addition to the advantages of non-destructiveness, accuracy, rapidity and stability, it can also be widely used and has high commercial value. Thus, the problem in the related art that there are a large number of ions in the sodium chloride solution, which may interact with the ions on the surface of the metal sample to be tested, causing the test results to be disturbed, and in addition, the sodium chloride solution is easy to flow as a liquid, and has high requirements on the shape and sealing of the electrolyte container.

[0018] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0020] Figure 1 A flow chart of a method for measuring metal surface impedance based on electrochemical impedance spectroscopy of a conductive gel medium according to an embodiment of the present application;

[0021] Figure 2 A schematic diagram of the structure of a method for measuring metal surface impedance based on electrochemical impedance spectroscopy of a conductive gel medium according to an embodiment of the present application;

[0022] Figure 3 A schematic structural diagram of a side view of a method for measuring metal surface impedance based on electrochemical impedance spectroscopy of a conductive gel medium provided according to an embodiment of the present application;

[0023] Figure 4 An equivalent circuit diagram of a method for measuring metal surface impedance based on electrochemical impedance spectroscopy of a conductive gel medium according to an embodiment of the present application;

[0024] Figure 5A schematic block diagram of an electrochemical impedance spectroscopy of a method for measuring metal surface impedance based on electrochemical impedance spectroscopy of a conductive gel medium provided according to one embodiment of the present application;

[0025] Figure 6 A schematic block diagram of an optical microscope photograph of the surface of an anodized aluminum sample after etching with laser power parameters provided in one embodiment of the present application;

[0026] Figure 7 A schematic diagram of a roughness curve of any cross-sectional profile curve of the surface of an anodized aluminum sample after etching with laser power parameters provided in one embodiment of the present application;

[0027] Figure 8 It is a schematic diagram of the element distribution in the longitudinal section of the anodized aluminum sample after etching with 75% laser power parameters;

[0028] Fig. 9 A schematic block diagram of a device for measuring metal surface impedance based on electrochemical impedance spectroscopy of a conductive gel medium according to an embodiment of the present application;

[0029] Fig.10 It is a schematic diagram of the structure of an electronic device provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0030] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0031] The following describes the method for measuring metal surface impedance based on electrochemical impedance spectroscopy of conductive gel medium in the embodiment of the present application with reference to the accompanying drawings. In view of the fact that there are a large number of ions in the sodium chloride solution mentioned in the above background technology, these ions may interact with the ions on the surface of the metal sample to be tested, resulting in interference with the test results. In addition, the sodium chloride solution is easy to flow as a liquid, and the shape and sealing of the electrolyte container are required to be high. The present application provides a method for measuring metal surface impedance based on electrochemical impedance spectroscopy of conductive gel medium. In this method, conductive gel can be used as an electrolyte to form a stable electrochemical interface with the metal surface of the metal sample, and the metal surface impedance measurement results of the metal sample are analyzed and measured to achieve rapid and accurate measurement of the metal surface impedance. In addition to the advantages of non-destructiveness, accuracy, rapidity and stability, it can also be widely used and has high commercial value. Thus, the problem that there are a large number of ions in the sodium chloride solution in the related technology, these ions may interact with the ions on the surface of the metal sample to be tested, resulting in interference with the test results, and in addition, the sodium chloride solution is easy to flow as a liquid, and the shape and sealing of the electrolyte container are required to be high.

[0032] Specifically, Figure 1 The present invention is a flow chart of a method for measuring metal surface impedance based on electrochemical impedance spectroscopy of a conductive gel medium according to an embodiment of the present application.

[0033] like Figure 1 As shown, the method for measuring metal surface impedance based on electrochemical impedance spectroscopy of conductive gel medium includes the following steps:

[0034] In step S101, a metal sample is used as a working electrode, and a conductive gel is used as an electrolyte, and a reference electrode and an auxiliary electrode are connected to the metal sample and the conductive gel.

[0035] It can be understood that the working electrode of the embodiment of the present application can be used to support the metal sample, the reference electrode is connected to the metal sample to provide a reference potential, and the auxiliary electrode is connected to the metal sample to monitor the current response.

[0036] In addition, in the embodiments of the present application, a conductive gel can be prepared, which has appropriate conductivity and stability and can contact the surface of a metal sample to form a stable electrochemical interface.

[0037] As a possible implementation method, in the embodiment of the present application, the metal sample can be used as a working electrode, the conductive gel can be used as an electrolyte, and the reference electrode and the auxiliary electrode can be connected to the metal sample and the conductive gel.

[0038] Optionally, in one embodiment of the present application, the conductive gel may include, but is not limited to, at least one of a gel matrix, a saline solution, a gelling agent, a thickener, and a moisturizer.

[0039] It will be understood by those skilled in the art that the components of the conductive gel in the embodiment of the present application may include, but are not limited to, a gel matrix, a saline solution, a gelling agent, a thickener, a moisturizer, etc., and the present application does not impose any specific limitation.

[0040] Further, in the embodiment of the present application, the container containing the conductive gel can be regarded as a conductive gel container, which can be connected to the working electrode and the auxiliary electrode. In addition, the conductive gel container of the embodiment of the present application has appropriate conductivity and stability, can form a stable contact with the metal surface, and provide a good electrochemical interface.

[0041] For example, the embodiments of the present application can use materials including gelatin, citric acid, sodium citrate, water, glycerin, sodium chloride, and devices such as a heating plate, a stirring rod, a weighing instrument, a container, and a volumetric flask to synthesize a conductive gel.

[0042] Further, in an embodiment of the present application, the synthesis process of the conductive gel can be: first, deionized water, sodium chloride particles, citric acid particles and sodium citrate particles are added to a container to prepare a saline mixed solution, and the pH value of the solution is adjusted to 6 to 7. Then, an appropriate amount of glycerol is added and stirred to mix evenly, and the viscosity is adjusted to keep moisture. Then, an appropriate amount of gelatin is weighed and added to the saline mixed solution. Then, the mixed solution is slowly heated to 70 degrees Celsius, and stirred until the gelatin is completely dissolved to form a uniform gel matrix. Finally, the prepared conductive gel solution is poured into an appropriate container and sealed for storage.

[0043] In step S102 , a target voltage or a target current is applied to the metal sample.

[0044] As a possible implementation method, the embodiment of the present application can apply a certain voltage or current to the metal sample, and monitor and record it through an electrochemical impedance spectroscopy measurement device.

[0045] In step S103, based on the electrochemical interface formed by the conductive gel and the metal surface of the metal sample, response data of the current response changing with the frequency is obtained.

[0046] That is to say, the embodiment of the present application can use the conductive gel as an electrolyte to form a stable electrochemical interface with the metal surface of the metal sample, and measure and evaluate the metal surface impedance through an electrochemical impedance spectroscopy measurement device.

[0047] Optionally, in one embodiment of the present application, obtaining response data of current response changing with frequency includes: controlling an electrochemical impedance spectroscopy measuring device to scan the electrochemical impedance spectrum at a preset scan rate within a preset frequency range to obtain response data.

[0048] It can be understood that the electrochemical impedance spectroscopy measuring device in the embodiment of the present application is used to apply voltage or current and record current response data; wherein, the electrochemical impedance spectroscopy measuring device may include but is not limited to a power supply unit, a current response monitoring unit and a frequency scanning control unit, etc., and the present application does not impose specific restrictions. Therefore, the embodiment of the present application can utilize the electrochemical impedance spectroscopy measuring device to realize the application of voltage or current to the metal sample and the monitoring and recording of the current response.

[0049] In addition, the embodiment of the present application can control the operation and parameter settings of the electrochemical impedance spectroscopy measurement device through a control unit, and the present application does not impose any specific limitations.

[0050] In some embodiments, the embodiments of the present application can control the electrochemical impedance spectroscopy measuring device to scan the electrochemical impedance spectrum within a certain frequency range and at a certain scanning rate, and record the data of the current response changing with the frequency to obtain response data. Among them, the certain frequency range and the certain scanning rate can be set by technicians in this field according to actual conditions, and this application does not make specific restrictions.

[0051] For example, the present application embodiment can utilize Figure 2-Figure 5 The electrochemical device shown generates response data, wherein, Figure 2 As shown, 201 is an electrochemical workstation; 202 is a conductive gel; 203 is an auxiliary electrode; 204 is a working electrode; 205 is a reference electrode; 206 is a sample; 207 is a cover with a through hole; and 208 is an electrode clip of the working electrode.

[0052] In addition, when the embodiment of the present application is used to conduct experiments using an electrochemical device, a sample stand, a beaker, and a three-electrode system are also required: a sample (working electrode), a reference electrode (silver / silver chloride electrode), an auxiliary electrode (platinum electrode), a conductive gel, and an SP-300 research-grade single-channel constant potential instrument, etc., which are not specifically limited in this application. Among them, in the embodiment of the present application, the SP-300 research-grade single-channel constant potential instrument can be used together with the EC-Lab test software, and the V-EIS test is selected in the software, and the AC frequency is 0.1Hz to 700MHz. The working electrode is the sample, the reference electrode is the silver / silver chloride electrode, and the auxiliary electrode is the platinum electrode. In addition, in the embodiment of the present application, the working electrode, the reference electrode, and the auxiliary electrode are directly connected to the SP-300 research-grade single-channel constant potential instrument.

[0053] Furthermore, the process of conducting an experiment using an electrochemical device in the embodiment of the present application can be as follows: first, a proper amount of conductive gel 202 is added to a beaker, and a lid 207 with a through hole is provided on the beaker for electrode suspension; an electrode clip 208 of the working electrode is 0.5 cm from the sample 206; 2The surface to be measured is contacted and fixed, and is suspended in the beaker together with the reference electrode 205 and the auxiliary electrode 203, ensuring that the measuring ends of the three electrodes are all immersed in the conductive gel. 2 , anodized aluminum samples with a thickness of 2 mm were etched under the laser at laser power parameters of 90%, 75% and 60%, rinsed with deionized water, wiped with alcohol cotton balls, and dried with cold air. The processed surface is the surface to be tested. The effect diagram of the laser power parameter etching processing of the surface to be tested can be shown as follows Figure 6-Figure 8 As shown, Figure 6 (a) is a schematic block diagram of an optical microscope photograph of the surface of an anodized aluminum sample after etching with 90% laser power parameters according to an embodiment of the present application; Figure 6 (b) is a schematic block diagram of an optical microscope photograph of the surface of an anodized aluminum sample after etching with 75% laser power parameters according to an embodiment of the present application; Figure 6 (c) is a schematic block diagram of an optical microscope photograph of the surface of an anodized aluminum sample after etching with 60% laser power parameters according to one embodiment of the present application; Figure 7 (a) is a schematic diagram of a roughness curve of any cross-sectional profile curve of the surface of an anodized aluminum sample after etching with 90% laser power parameters according to an embodiment of the present application; Figure 7 (b) is a schematic diagram of a roughness curve of any cross-sectional profile curve of the surface of an anodized aluminum sample after etching with 75% laser power parameters according to an embodiment of the present application; Figure 7 (c) is a schematic diagram of a roughness curve of any cross-sectional profile curve of the surface of an anodized aluminum sample after etching with 60% laser power parameters according to an embodiment of the present application; Figure 8 A schematic block diagram of element distribution in the longitudinal section of an anodized aluminum sample after etching with 75% laser power parameters according to an embodiment of the present application.

[0054] In step S104 , a metal surface impedance measurement result of the metal sample is generated based on the response data.

[0055] It can be understood that the metal surface impedance measurement results of the embodiments of the present application may be, but are not limited to, impedance spectra, equivalent circuit parameters, or other forms of measurement results, and the present application does not impose any specific limitations.

[0056] Furthermore, the embodiments of the present application can output the metal surface impedance measurement results through a display, a printer, a storage device or a communication interface.

[0057] In some embodiments, the embodiments of the present application can generate metal surface impedance measurement results of metal samples based on response data, and analyze and calculate the results.

[0058] For example, the embodiment of the present application can record the generated response data, export and normalize the response data, and draw the metal surface impedance measurement results of the metal sample in the data processing software, which can be an impedance spectrum, equivalent circuit parameters or other forms of metal surface impedance measurement results, and the present application does not make specific limitations.

[0059] Specifically, the embodiments of the present application can be based on Figure 4 and Figure 5 The equivalent circuit diagram shown in the figure uses software such as Z-view to fit the resistance Rs of the conductive gel, the resistance Rp of the microscopic holes on the sample surface, the capacitance Cp of the microscopic holes on the sample surface, the barrier layer resistance Rb between the microscopic holes on the sample surface and the internal single substance, and the barrier layer resistance Cb between the microscopic holes on the sample surface and the internal single substance, in order to conduct a systematic analysis.

[0060] Further, in the embodiment of the present application, different anodized aluminum samples are respectively installed on the electrode clamp during measurement, and V-EIS is selected in the EC-Lab test software. The alternating current frequency is 0.1Hz to 700MHz, and three sets of data are measured for each sample. The metal surface impedance measurement results are exported as a txt file, and the data processing software is used for normalization and the Nyquist diagram and Bode diagram are drawn. Among them, the tested sample can be but not limited to aluminum-anodized aluminum or laser-etched metal surfaces, etc., and most non-inert metal surfaces that undergo ion exchange with conductive gel are applicable, and this application does not make specific restrictions.

[0061] Optionally, in one embodiment of the present application, generating a metal surface impedance measurement result of the metal sample based on the response data includes: inputting the response data into a pre-trained data analysis model to obtain the metal surface impedance measurement result.

[0062] It can be understood that the pre-trained mathematical analysis model uses mathematical models and algorithms to perform frequency domain or time domain analysis on the recorded response data, calculate equivalent circuit parameters or other relevant parameters of the metal surface impedance, and obtain the metal surface impedance measurement results.

[0063] As a possible implementation method, the embodiment of the present application can analyze and calculate the metal surface impedance based on the response data using a pre-trained data analysis model to obtain the metal surface impedance measurement result.

[0064] The working principle of the method for measuring metal surface impedance based on electrochemical impedance spectroscopy of conductive gel medium proposed in the embodiment of the present application is described in detail below in conjunction with a specific embodiment.

[0065] Embodiment 1:

[0066] The embodiment of the present application can use materials including gelatin, citric acid, sodium citrate, water, glycerin, sodium chloride, etc., and devices such as a heating plate, a stirring rod, a weighing instrument, a container, and a volumetric flask to synthesize the conductive gel. The synthesis process of the conductive gel in the embodiment of the present application is as shown above, and no unnecessary details are given here.

[0067] Furthermore, the embodiments of the present application can utilize Figure 2-Figure 5 The electrochemical device shown generates response data. In addition, when the embodiment of the present application uses the electrochemical device for experiments, a sample stand, a beaker, a three-electrode system: a sample (working electrode), a reference electrode (silver / silver chloride electrode), an auxiliary electrode (platinum electrode), a conductive gel, and a SP-300 research-grade single-channel constant potential instrument are also required, and the present application does not make specific restrictions.

[0068] The process of conducting the experiment using the electrochemical device in the embodiment of the present application is as shown above, and no redundant description is given here. The effect diagram of the surface to be tested provided in the embodiment of the present application can be as shown in FIG. Figure 6-Figure 8 shown.

[0069] Furthermore, the embodiments of the present application can be based on Figure 4 and Figure 5 The equivalent circuit diagram shown in the figure uses software such as Z-view to fit the resistance Rs of the conductive gel, the resistance Rp of the microscopic holes on the sample surface, the capacitance Cp of the microscopic holes on the sample surface, the barrier layer resistance Rb between the microscopic holes on the sample surface and the internal single substance, and the barrier layer resistance Cb between the microscopic holes on the sample surface and the internal single substance, in order to conduct a systematic analysis.

[0070] In the embodiment of the present application, different anodized aluminum samples were installed on the electrode clamps during measurement, and V-EIS was selected in the EC-Lab test software. The AC frequency was 0.1 Hz to 700 MHz, and three sets of data were measured for each sample. The metal surface impedance measurement results were exported as a txt file, and the data processing software was used for normalization and to draw the Nyquist diagram and Bode diagram.

[0071] According to the method for measuring metal surface impedance based on electrochemical impedance spectroscopy of conductive gel medium proposed in the embodiment of the present application, conductive gel can be used as an electrolyte to form a stable electrochemical interface with the metal surface of the metal sample, and the metal surface impedance measurement results of the metal sample are analyzed and measured to achieve rapid and accurate measurement of the metal surface impedance. In addition to the advantages of non-destructiveness, accuracy, rapidity and stability, it can also be widely used and has high commercial value. Thus, the problem in the related art that there are a large number of ions in the sodium chloride solution, which may interact with the ions on the surface of the metal sample to be tested, causing the test results to be disturbed, and in addition, the sodium chloride solution is easy to flow as a liquid, and has high requirements on the shape and sealing of the electrolyte container.

[0072] Next, a device for measuring metal surface impedance based on electrochemical impedance spectroscopy of a conductive gel medium proposed in an embodiment of the present application is described with reference to the accompanying drawings.

[0073] Fig. 9 The present invention is a schematic block diagram of a device for measuring metal surface impedance based on electrochemical impedance spectroscopy of a conductive gel medium according to an embodiment of the present application.

[0074] like Fig. 9 As shown, the device 10 for measuring metal surface impedance based on electrochemical impedance spectroscopy of conductive gel medium includes: a setting module 100 , an application module 200 , an acquisition module 300 and a generation module 400 .

[0075] The module 100 is provided to use the metal sample as a working electrode and the conductive gel as an electrolyte, and to connect the reference electrode and the auxiliary electrode to the metal sample and the conductive gel.

[0076] The applying module 200 is used to apply a target voltage or a target current to the metal sample.

[0077] The acquisition module 300 is used to acquire response data of the current response changing with the frequency based on the electrochemical interface formed by the conductive gel and the metal surface of the metal sample.

[0078] The generating module 400 is used to generate a metal surface impedance measurement result of the metal sample based on the response data.

[0079] Optionally, in one embodiment of the present application, the conductive gel may include, but is not limited to, at least one of a gel matrix, a saline solution, a gelling agent, a thickener, and a moisturizer.

[0080] Optionally, in one embodiment of the present application, the acquisition module 300 includes: a generation unit.

[0081] The generating unit is used to control the electrochemical impedance spectroscopy measuring device to scan the electrochemical impedance spectroscopy at a preset scanning rate within a preset frequency range to obtain response data.

[0082] Optionally, in one embodiment of the present application, the generating module 400 includes: an acquiring unit.

[0083] The acquisition unit is used to input the response data into a pre-trained data analysis model to obtain the metal surface impedance measurement result.

[0084] It should be noted that the above explanation of the method embodiment for measuring metal surface impedance based on electrochemical impedance spectroscopy of conductive gel medium is also applicable to the device for measuring metal surface impedance based on electrochemical impedance spectroscopy of conductive gel medium of this embodiment, which will not be repeated here.

[0085] According to the device for measuring metal surface impedance based on electrochemical impedance spectroscopy of conductive gel medium proposed in the embodiment of the present application, conductive gel can be used as an electrolyte to form a stable electrochemical interface with the metal surface of the metal sample, and the metal surface impedance measurement results of the metal sample are analyzed and measured to achieve rapid and accurate measurement of the metal surface impedance. In addition to the advantages of non-destructiveness, accuracy, rapidity and stability, it can also be widely used and has high commercial value. Thus, the problems in the related art that there are a large number of ions in the sodium chloride solution, which may interact with the ions on the surface of the metal sample to be tested, causing the test results to be disturbed, and in addition, the sodium chloride solution is easy to flow as a liquid, and has high requirements on the shape and sealing of the electrolyte container, etc.

[0086] Fig.10 This is a schematic diagram of the structure of an electronic device provided according to an embodiment of the present application. The electronic device may include:

[0087] A memory 1001 , a processor 1002 , and a computer program stored in the memory 1001 and executable on the processor 1002 .

[0088] When the processor 1002 executes the program, the method for measuring metal surface impedance based on electrochemical impedance spectroscopy of a conductive gel medium provided in the above embodiment is implemented.

[0089] Furthermore, the electronic device further comprises:

[0090] The communication interface 1003 is used for communication between the memory 1001 and the processor 1002 .

[0091] The memory 1001 is used to store computer programs that can be executed on the processor 1002 .

[0092] The memory 1001 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0093] If the memory 1001, the processor 1002 and the communication interface 1003 are implemented independently, the communication interface 1003, the memory 1001 and the processor 1002 can be connected to each other through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig.10 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0094] Optionally, in a specific implementation, if the memory 1001, the processor 1002 and the communication interface 1003 are integrated on a chip, the memory 1001, the processor 1002 and the communication interface 1003 can communicate with each other through an internal interface.

[0095] The processor 1002 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0096] An embodiment of the present application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above method for measuring metal surface impedance based on electrochemical impedance spectroscopy of a conductive gel medium.

[0097] An embodiment of the present application also provides a computer program product, including a computer program, which, when executed, implements the above method for measuring metal surface impedance based on electrochemical impedance spectroscopy of a conductive gel medium.

[0098] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0099] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0100] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or N executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0101] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purpose of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or N wirings (electronic devices), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways as necessary and then storing it in a computer memory.

[0102] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. If implemented by hardware, as in another embodiment, it can be implemented by any one or a combination of multiple of the following technologies known in the art: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0103] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0104] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0105] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A method for measuring metal surface impedance based on electrochemical impedance spectroscopy of conductive gel medium, characterized in that: The following steps are involved: The metal sample is used as a working electrode and the conductive gel is used as an electrolyte, and a reference electrode and an auxiliary electrode are connected to the metal sample and the conductive gel; applying a target voltage or a target current to the metal sample; Based on the electrochemical interface formed by the conductive gel and the metal surface of the metal sample, obtaining response data of the current response changing with the frequency; Based on the response data, a metal surface impedance measurement result of the metal sample is generated.

2. The method according to claim 1, characterized in that: The conductive gel comprises at least one of a gel matrix, a saline solution, a gelling agent, a thickener and a moisturizing agent.

3. The method according to claim 1, characterized in that The step of obtaining the response data of the current response changing with the frequency includes: Within a preset frequency range, the electrochemical impedance spectroscopy measuring device is controlled to scan the electrochemical impedance spectroscopy at a preset scanning rate to obtain the response data.

4. The method according to claim 1, characterized in that: The step of generating a metal surface impedance measurement result of the metal sample based on the response data comprises: The response data is input into a pre-trained data analysis model to obtain the metal surface impedance measurement result.

5. A device for measuring metal surface impedance based on electrochemical impedance spectroscopy of conductive gel medium, characterized in that: include: A module is provided for using the metal sample as a working electrode and the conductive gel as an electrolyte, and connecting a reference electrode and an auxiliary electrode to the metal sample and the conductive gel; An applying module, used for applying a target voltage or a target current to the metal sample; An acquisition module, used for acquiring response data of a current response changing with frequency based on an electrochemical interface formed between the conductive gel and a metal surface of the metal sample; A generating module is used to generate a metal surface impedance measurement result of the metal sample based on the response data.

6. The device according to claim 5, characterized in that The conductive gel comprises at least one of a gel matrix, a saline solution, a gelling agent, a thickener and a moisturizing agent.

7. The device according to claim 5, characterized in that The acquisition module comprises: The generating unit is used to control the electrochemical impedance spectroscopy measuring device to scan the electrochemical impedance spectroscopy within a preset frequency range at a preset scanning rate to obtain the response data.

8. The device according to claim 5, characterized in that The generating module comprises: An acquisition unit is used to input the response data into a pre-trained data analysis model to obtain the metal surface impedance measurement result.

9. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method for measuring metal surface impedance based on electrochemical impedance spectroscopy of a conductive gel medium as described in any one of claims 1 to 4.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the method for measuring metal surface impedance based on electrochemical impedance spectroscopy of a conductive gel medium as described in any one of claims 1 to 4.

11. A computer program product, comprising a computer program, characterized in that The computer program is executed to implement the method for measuring metal surface impedance based on electrochemical impedance spectroscopy of a conductive gel medium as claimed in any one of claims 1 to 4.

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