Light-gas-liquid coupling corrosion test device and test method

Abstract

The invention relates to a light-gas-liquid coupling corrosion test device and a test method. The light-gas-liquid coupling corrosion test device comprises a device body, a lifting platform, a replaceable sample platform, a light source system, a gas supply system, a liquid supply system, a computer information acquisition system and a computer control system, the invention solves the problems of single system, limited light source range, poor timeliness of atmosphere, solution and light source control and the like in the existing metal corrosion test, and provides a test device and a test method which can be simultaneously suitable for an atmospheric environment, a solution environment and a soil environment. And the coupling corrosion behavior research under various test condition requirements can be conveniently and quickly completed.

Description

Technical Field

[0001] The invention relates to the technical field of metal material corrosion testing, and in particular to a light-gas-liquid coupling corrosion testing device and a testing method. Background Art

[0002] Metal materials will inevitably corrode during use. According to literature reports, the global annual loss due to corrosion is as high as hundreds of billions of dollars. A large number of studies in recent years have found that light will have a significant impact on metal corrosion, especially ultraviolet rays with shorter wavelengths. Due to its high frequency and high energy carried by photons, water and solutes in the water on the metal surface undergo photocatalysis to form free radicals. Metal corrosion products are semiconductors, which will produce semiconductor photovoltaic effects. When light reaches above the cutoff frequency of the material, a photoelectric effect will occur. These corrosion processes and changes in corrosion products of metal materials caused by light have led to large errors between corrosion research conducted in the laboratory and corrosion in real use scenarios. In particular, for some materials that are often exposed to strong light and corrosive media during use (such as shipbuilding materials, sculptures, solar panel frame materials, etc.), it is necessary to re-examine the corrosion situation under the intervention of light and take corresponding protective measures.

[0003] At present, the articles related to light corrosion published in the international mainstream corrosion journals include "Effects of UV and Visible Light on Corrosion of Bronze Covered with Oxide Film in Aqueous Solution" by Jinxian Wu et al., "Corrosion Behavior of 40Cr Steel in 3.5% Sodium Chloride Solution under the Synergistic Effect of UV Illumination and Strain" by Pengfei Qin et al., "Light-Induced Passivation: A New Corrosion Mitigation Strategy for Bronze Workpieces" by Jinxian Wu et al., "Corrosion Science"; According to the above-mentioned public documents, the current research on the changes in corrosion reactions caused by light mainly uses solar simulators or a monochromatic light source (the Chinese patent application with application number CN201510496159.1 discloses "A Method for Studying Atmospheric Light Corrosion", which can adjust the dry and wet gas flow rates and change the light intensity as needed). In fact, in addition to ultraviolet light, the solar spectrum also includes visible light and infrared light including near infrared and far infrared. The irradiance of infrared light accounts for about 43% of the solar spectrum, which mainly causes obvious thermal effects and heats up the irradiated objects. However, the methods involved in the current research do not include all bands of light in the research scope, and usually only study one or two light sources.

[0004] In addition, most of the existing research on metal corrosion is only applicable to corrosion tests of one system, such as only atmospheric corrosion or only electrochemical corrosion research of solution systems. It is impossible to use the same test device to simultaneously study the corrosion behavior of multiple systems.

[0005] The present invention uses a light source matrix composed of multiple wavelength monochromatic LEDs to include light of all wavelengths in the research scope. By replacing the sample stage, the sample behavior under various systems including atmospheric corrosion, electrochemical corrosion under solution system, photocorrosion under vacuum environment, photocatalysis, soil environment corrosion, etc. can be selectively studied. Relying on a computer control system and spectral calibration, the spectrum and irradiance of the light output by the light source can be controlled, and the internal atmosphere and the composition of the sample surface solution can be controlled. Through a computer control system and a computer information acquisition system, sample preparation and data acquisition under various experimental conditions can be completed conveniently and quickly. Summary of the invention

[0006] The present invention provides a light-gas-liquid coupled corrosion test device and test method, which solve the problems of the existing metal corrosion test, such as the single system, limited light source range, poor timeliness of atmosphere, solution and light source control, and provides a test device and method that can be simultaneously applied to atmospheric environment, solution environment and soil environment, and can conveniently and quickly complete the coupled corrosion behavior research under various test conditions.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A light-gas-liquid coupling corrosion test device comprises a device body, a lifting platform, a replaceable sample platform, a light source system, an air supply system, a liquid supply system, a computer information acquisition system and a computer control system; the device body has a closed space, a lifting platform is provided at the bottom of the closed space, and the replaceable sample platform is arranged on the lifting platform; the replaceable sample platform comprises a light corrosion sample platform, an electrochemical corrosion sample platform, a spray corrosion sample platform and a gas corrosion sample platform, and one of them is installed on the lifting platform; a light source system is provided on the top of the device body directly above the replaceable sample platform, and the light source system is provided with an LED matrix composed of monochromatic LEDs of different wavelengths; the air supply system and the liquid supply system are arranged outside the device body, and an air inlet and outlet pipes are provided on the device body and connected to the air supply system; the electrochemical corrosion sample platform is provided with a solution tank and an electrochemical workstation, and the solution tank is connected to the liquid supply system through a liquid inlet pipe and a liquid outlet pipe; the computer information acquisition system comprises a temperature Sensor, spectrometer sensor, spectrometer and camera device; the spectrometer and camera device are arranged on one side of the upper part of the device body; the tops of the electrochemical corrosion sample stage, the spray corrosion sample stage and the gas corrosion sample stage are all provided with sample slots, the temperature sensors are arranged at the bottoms of the corresponding sample slots, and the temperature sensors are connected to the temperature information collector; the top of the optical corrosion sample stage is provided with a spectrometer sensor slot, and the spectrometer sensor is arranged in the spectrometer sensor slot; the lifting platform is provided with a lifting control device, the light source system is provided with a light source adjustment device, the gas supply system is provided with an atmosphere adjustment device, and the liquid supply system is provided with a solution adjustment device; the control ends of the lifting control device, the light source adjustment device, the atmosphere adjustment device and the solution adjustment device are respectively connected to the computer control system, and the signal output ends of the temperature information collector, the spectrometer, the spectrometer sensor and the camera device are respectively connected to the computer information acquisition system; the computer information acquisition system and the computer control system constitute a host computer.

[0009] The light source system consists of a light source lamp board, a radiator and a light source adjustment device; the light source adjustment device is an LED light source driver board; the radiator consists of a radiator shell, a metal heat spreader, a thermal copper tube, cooling fins and a fan; a fan is arranged at the air intake of the radiator shell, and cooling fins are arranged at the air outlet of the radiator shell. The top of the light source lamp board is in close contact with the metal heat spreader, and the metal heat spreader is connected to the cooling fins through a plurality of thermal steel tubes; an LED matrix is ​​arranged at the bottom of the light source lamp board, and the LED matrix is ​​connected to the LED light source driver board through LED wires, and the control signal input end of the LED light source driver board is connected to a computer control system.

[0010] The gas supply system is composed of a gas source, a vacuum pump and an atmosphere regulating device; the atmosphere regulating device includes an atmosphere controller, a gas valve and a gas supply controller; the gas source includes at least a compressed air source, an oxygen source, a hot air source and a cold air source containing ozone; the gas source and the vacuum pump are respectively connected to the inlet of the atmosphere controller, and the outlet of the atmosphere controller is connected to the inlet and outlet pipes on the device body through a gas pipeline, and a gas valve is arranged on the gas pipeline, and the gas valve is driven by a stepper motor; the control ends of the stepper motor and the vacuum pump are connected to the gas supply controller, and the gas supply controller is also connected to a computer control system.

[0011] The liquid supply system is composed of a liquid inlet tank, a liquid outlet tank and a solution regulating device, wherein the solution regulating device comprises a liquid inlet peristaltic pump, a liquid outlet peristaltic pump and a liquid inlet and outlet controller; the liquid inlet tank is connected to the solution tank via a liquid inlet pipe, the liquid outlet tank is connected to the solution tank via a liquid outlet pipe, the liquid inlet pipe and the liquid inlet of the solution tank, and the liquid outlet pipe and the liquid outlet of the solution tank are connected via quick connectors; the liquid inlet pipe is provided with a liquid inlet peristaltic pump, and the liquid outlet pipe is provided with a liquid outlet peristaltic pump; the control ends of the liquid inlet peristaltic pump and the liquid outlet peristaltic pump are respectively connected to the liquid inlet and outlet controllers, and the liquid inlet and outlet controllers are also connected to a computer control system.

[0012] The lifting platform is composed of a base, a lifting mechanism, an upper table and a lifting controller; the lifting mechanism is a spiral lifting mechanism driven by a lifting stepping motor; the control end of the lifting stepping motor is connected to the lifting controller, and the lifting controller is also connected to a computer control system.

[0013] The device body consists of a box body and a box door, the box door is arranged on the front side of the box body, and the box door and the box body are rotatably connected by a hinge; a pressure sensor is arranged in the box body, and a pressure gauge is arranged on the outside of the box body and connected to the pressure sensor; the inner wall of the box body, the outer surface of the lifting platform, and the outer surface of the replaceable sample table are all sprayed with black light-absorbing paint; and metal tape is pasted on the outer surface of the box body.

[0014] The electrochemical corrosion sample platform is composed of a sample platform body, an electrochemical workstation and a temperature sensor. The electrochemical workstation includes a working electrode, a reference electrode, a sample electrode sheet, a power supply and an electrochemical analysis system. The sample platform body is provided with a sample slot, a solution slot, a wire hole, a working electrode jack and a reference electrode jack. The sample and the sample slot are sealed by an insulating sealing ring. The solution slot is arranged above the sample slot, and the solution slot is provided with a liquid inlet and a liquid outlet. The top of the sample is in contact with the liquid in the solution slot. The bottom of the sample is in contact with the top surface of the sample electrode sheet, and the sample electrode sheet is connected to an external power supply through an electrode sheet wire. A temperature sensor is arranged at the bottom of the sample slot, and the temperature sensor is connected to a temperature information collector through a temperature sensor wire, and the temperature information collector is also connected to a computer information collection system. The electrode sheet wire and the temperature sensor wire connected to the sample electrode sheet are passed through corresponding wire holes. The working electrode is inserted into the working electrode jack, and the reference electrode is inserted into the reference electrode jack. The working electrode and the reference electrode are respectively connected to an external power supply and an electrochemical analysis system through corresponding working electrode wires and reference electrode wires.

[0015] The spray corrosion sample platform is composed of a sample platform body 2, a temperature sensor 2 and a sprayer; a sample slot 2 is arranged on the sample platform body 2, a temperature sensor 2 is arranged at the bottom of the sample slot 2, and the temperature sensor 2 is connected to a temperature information collector through a temperature sensor 2 wire; a sprayer is arranged on one side of the upper part of the sample slot 2, and the nozzle of the sprayer is connected to a liquid inlet pipe through a spray solution pipeline.

[0016] The gas corrosion sample platform is composed of a sample platform body three and a temperature sensor three; a sample slot three is arranged on the top of the sample platform body three, a temperature sensor three is arranged on the bottom of the sample slot three, and the temperature sensor three is connected to the temperature information collector through a wire; the light corrosion sample platform is composed of a sample platform body four and a spectrometer sensor; a spectrometer sensor slot is arranged on the top of the sample platform body four, a spectrometer sensor is arranged in the spectrometer sensor slot, and the spectrometer sensor is connected to the computer information collection system through the spectrometer sensor wire.

[0017] A light-gas-liquid coupled corrosion test method comprises the following steps:

[0018] 1) Selection and installation of sample stage:

[0019] Select the corresponding replaceable sample stage according to the type of corrosion test, install the replaceable sample stage on the lifting platform, place the sample on the top of the replaceable sample stage or in the corresponding sample slot, and use the lifting platform to adjust the height of the replaceable sample stage so that the sample is in the set test area; the corrosion test includes light corrosion test, electrochemical corrosion test, spray corrosion test and gas corrosion test, and select the light corrosion sample stage, electrochemical corrosion sample stage, spray corrosion sample stage or gas corrosion sample stage accordingly; connect the replaceable sample stage with the corresponding gas supply system, liquid supply system, computer information acquisition system and computer control system;

[0020] 2) Corrosion test:

[0021] (1) When conducting the light corrosion test, the computer control system is used to control the on / off, current and voltage intensity of each monochromatic LED in the LED matrix by using the light source adjustment device, thereby adjusting the irradiance and spectral distribution of the light irradiated to the sample surface; the spectroscopic and morphological information of the sample is collected by the spectrometer and the camera device, and the collected information is transmitted to the computer information collection system;

[0022] (2) When conducting a gas corrosion test, the atmosphere composition in the device body is adjusted by using an atmosphere controller through a computer control system, or the device body is evacuated by using a vacuum pump; the thermodynamic and morphological information of the sample is collected by a temperature sensor and a camera device, and the collected information is transmitted to the computer information collection system;

[0023] (3) When conducting an electrochemical corrosion test, an electrochemical workstation is established, and the electrolyte is input into the solution tank using a solution regulator through a computer control system; the electrochemical, thermodynamic and morphological information of the sample is collected through the electrochemical workstation, temperature sensor and camera device, and the collected information is transmitted to the computer information acquisition system;

[0024] (4) When conducting a spray corrosion test, the computer control system controls the corrosion solution to be sprayed onto the sample surface through the spray nozzle of the sprayer using a solution regulating device; the thermodynamic and morphological information of the sample is collected through a temperature sensor and a camera device, and the collected information is transmitted to the computer information collection system;

[0025] 3) Combined corrosion test:

[0026] Carry out combined corrosion tests of phosgene-gas, phosgene-liquid, and phosgene-gas-liquid as needed.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1) The computer control system can be used to adjust the light source, the height of the lifting platform and the gas supply system to change the type of light, irradiance, and atmosphere of the sample environment; the liquid environment of the sample can also be changed at any time through the liquid supply system, and different corrosion tests can be completed by replacing different sample platforms, and the computer information acquisition system can be used to obtain and record various physical and chemical information of the sample during the test;

[0029] 2) The present invention can simulate a variety of corrosion environments and can study the corrosion performance of metals when light, atmosphere, and liquid change continuously or discretely;

[0030] 3) Using a spectrometer, camera and temperature sensor, the spectral, morphological and thermodynamic information of the sample can be obtained in real time. In conjunction with an electrochemical workstation, the electrochemical information of the sample can also be obtained.

[0031] 4) The test light source can be adjusted by changing the type and quantity of the monochromatic LEDs welded on the light source board, or by adjusting the sample stage height and LED current. For example, multiple monochromatic LEDs such as 365nm, 420nm, 532nm, ... 850nm can be welded on the light source board (the quantity of each LED depends on the required power). The current size and the number of energized LEDs can be controlled by the computer control system program, and the proportion of each monochromatic LED in the light source spectrum can be controlled. The spectrum distribution can be changed over time by program settings.

[0032] 5) The gas inlet of the atmosphere controller can be connected to different gas sources or a vacuum pump as required. For example, by introducing hot air and matching it with an electrochemical corrosion sample table, the light corrosion characteristics of metal materials in a marine environment can be simulated; or by introducing cold air with a high ozone content, matching it with a light source with strong ultraviolet rays, and using a spray corrosion sample table to spray acid rain smoke, the corrosion characteristics of metal materials in high altitude conditions can be simulated; or by using a vacuum pump to evacuate the air and constructing a test light source based on the outer space solar emission spectrum, the corrosion characteristics of metal materials in a space environment can be simulated. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of a light-gas-liquid coupled corrosion test device described in the present invention.

[0034] Figure 2 It is a structural schematic diagram of the light source lamp board of the present invention.

[0035] Figure 3 It is a structural schematic diagram of the atmosphere controller and the gas valve of the present invention.

[0036] Figure 4 It is a structural schematic diagram of the radiator of the present invention.

[0037] Figure 5 It is a structural schematic diagram of the electrochemical corrosion sample stage of the present invention.

[0038] Figure 6 It is a structural schematic diagram of the spray corrosion sample platform of the present invention.

[0039] Figure 7 It is a schematic cross-sectional view of sample stage 3 described in the present invention.

[0040] Figure 8 It is a cross-sectional schematic diagram of the sample stage four described in the present invention.

[0041] Fig. 9 Graph showing the relationship between the irradiance of the light source matrix and the sample distance of the present invention.

[0042] In the figure: 1. Replaceable sample stage 101. Electrochemical corrosion sample stage 101-1. Sample tank 1 101-2. Insulating seal ring 101-3. Solution tank 101-4. Sample electrode sheet 101-5. Electrode sheet wire 101-6. Working electrode socket 101-7. Reference electrode socket 101-8. Working electrode wire 101-9. Reference electrode wire 101-10. Liquid inlet 101-11. Liquid outlet 101-12. Temperature sensor 1 101-13. Temperature sensor 1 wire 101-14. Bolt hole 102. Spray corrosion sample stage 102-1. Sample tank 2 102-2. Sprayer 102-3. Spray solution pipeline 102-4. Temperature Sensor 2 102-5. Temperature sensor 2 wire 102-6. Bolt hole 2 103. Gas corrosion sample stage 103-1. Sample slot 3 103-2. Temperature sensor 3 103-3. Temperature sensor 3 wire 103-4. Bolt hole 3 104. Photocorrosion sample stage 104-1. Spectrometer sensor slot 104-2. Spectrometer sensor wire 104-3. Bolt hole 4 2. Upper table 3. Lifting mechanism 4. Base 5. Liquid outlet peristaltic pump 6. Liquid inlet peristaltic pump 7. Inlet and outlet pipes 8. Device body 9. Radiator 9-1. Metal heat sink 9-2. Thermal copper tube 9-3. Heat sink fins 9-4. Fan 10. Thermal structure 11. Light source lamp board 11-1. Monochrome LED 11-2. LED matrix 11-3. LED wire 11-4. Cable terminal 11-5. Positioning hole 1 11-6. Positioning hole 2 12. Spectrometer and camera 13. Liquid outlet 14. Liquid inlet 15. Gas valve 16. Atmosphere controller 16-1. Knob 16-2. Gas source connecting pipe 16-3. Vacuum pump connecting pipe 17. LED light source driver board 18. Temperature information collector 19. Lifting controller 20. Liquid inlet and outlet controller 21. Gas supply controller 22. Computer information acquisition system 23. Computer control system 24. Host computer 25. Sealing ring DETAILED DESCRIPTION

[0043] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings:

[0044] like Figure 1 As shown, the light-gas-liquid coupling corrosion test device described in the present invention includes a device body 8, a lifting platform, a replaceable sample table 1, a light source system, a gas supply system, a liquid supply system, a computer information acquisition system 22 and a computer control system 23; the device body 8 has a closed space, a lifting platform is provided at the bottom of the closed space, and the replaceable sample table 1 is arranged on the lifting platform; the replaceable sample table 1 includes a light corrosion sample table 104, an electrochemical corrosion sample table 101, a spray corrosion sample table 102 and a gas corrosion sample table 103, and one of them is installed on the lifting platform; a light source system is provided on the top of the device body 8 directly above the replaceable sample table 1, and the light source system is provided with monochromatic LEDs of different wavelengths 11-1 is composed of an LED matrix 11-2; the gas supply system and the liquid supply system are arranged outside the device body 8, and the device body 8 is provided with an inlet and outlet pipe 7 connected to the gas supply system; the electrochemical corrosion sample table 101 is provided with a solution tank 101-3 and an electrochemical workstation, and the solution tank 101-3 is connected to the liquid supply system through a liquid inlet pipe 101-10 and a liquid outlet pipe 101-11; the computer information acquisition system 22 includes a temperature sensor, a spectrometer sensor, a spectrometer and a camera device 12; the spectrometer and the camera device 12 are arranged on one side of the upper part of the device body 8; the tops of the electrochemical corrosion sample table 101, the spray corrosion sample table 102 and the gas corrosion sample table 103 are all provided with sample slots, and the temperature sensors are arranged at the corresponding sample slots. At the bottom, the temperature sensor is connected to the temperature information collector 18; a spectrometer sensor slot 104-1 is provided on the top of the photocorrosion sample platform 104, and the spectrometer sensor is provided in the spectrometer sensor slot 104-1; the lifting platform is provided with a lifting control device, the light source system is provided with a light source adjustment device, the gas supply system is provided with an atmosphere adjustment device, and the liquid supply system is provided with a solution adjustment device; the control ends of the lifting control device, the light source adjustment device, the atmosphere adjustment device and the solution adjustment device are respectively connected to the computer control system 23, and the signal output ends of the temperature information collector 18, the spectrometer, the spectrometer sensor and the camera device are respectively connected to the computer information acquisition system 22; the computer information acquisition system 22 and the computer control system 23 constitute a host computer 24.

[0045] The light source system is composed of a light source lamp board 11, a heat sink 9 and a light source adjustment device; the light source adjustment device is an LED light source driving board 17; Figure 3As shown, the radiator 9 is composed of a radiator shell, a metal soaking plate 9-1, a heat-conducting copper tube 9-2, heat-dissipating fins 9-3 and a fan 9-4; a fan 9-4 is provided at the air inlet of the radiator shell, and a heat-dissipating fin 9-3 is provided at the air outlet of the radiator shell. The top of the light source lamp board 11 is in close contact with the metal soaking plate 9-1, and the metal soaking plate 9-1 is connected to the heat-dissipating fin 9-3 through a plurality of heat-conducting steel tubes 9-2; Figure 2 As shown, an LED matrix 11 - 2 is provided at the bottom of the light source lamp board 11 , and the LED matrix 11 - 2 is connected to the LED light source driving board 17 through an LED wire 11 - 3 , and a control signal input end of the LED light source driving board 17 is connected to a computer control system 23 .

[0046] The gas supply system is composed of a gas source, a vacuum pump and an atmosphere regulating device; the atmosphere regulating device includes an atmosphere controller 16, a gas valve 15 (such as Figure 4 As shown) and a gas supply controller 21; the gas source at least includes a compressed air source, an oxygen source, a hot air source and a cold air source containing ozone; the gas source and the vacuum pump are respectively connected to the inlet of the atmosphere controller 16, and the outlet of the atmosphere controller 16 is connected to the inlet and outlet pipes 7 on the device body 8 through the gas pipeline, and a gas valve 15 is provided on the gas pipeline, and the gas valve 15 is driven by a stepper motor; the control ends of the stepper motor and the vacuum pump are connected to the gas supply controller 21, and the gas supply controller 21 is also connected to the computer control system 23.

[0047] The liquid supply system is composed of a liquid inlet tank 13, a liquid outlet tank 14 and a solution regulating device, wherein the solution regulating device includes a liquid inlet peristaltic pump 6, a liquid outlet peristaltic pump 5 and a liquid inlet and outlet controller 20; the liquid inlet tank 13 is connected to the solution tank 101-3 through a liquid inlet pipe 101-10, and the liquid outlet tank 14 is connected to the solution tank 101-3 through a liquid outlet pipe 101-11, and the liquid inlet of the liquid inlet pipe 101-10 and the liquid outlet of the solution tank 101-3 are connected through quick connectors; the liquid inlet peristaltic pump 6 is arranged on the liquid inlet pipe 101-10, and the liquid outlet peristaltic pump 5 is arranged on the liquid outlet pipe 101-11; the control ends of the liquid inlet peristaltic pump 6 and the liquid outlet peristaltic pump 5 are respectively connected to the liquid inlet and outlet controller 20, and the liquid inlet and outlet controller 20 is also connected to a computer control system 23.

[0048] The lifting platform is composed of a base 4, a lifting mechanism 3, an upper table 2 and a lifting controller 19; the lifting mechanism 3 is a spiral lifting mechanism driven by a lifting stepper motor; the control end of the lifting stepper motor is connected to the lifting controller 19, and the lifting controller 19 is also connected to a computer control system 23.

[0049] The device body 8 consists of a box body and a box door, the box door is arranged on the front side of the box body, and the box door and the box body are rotatably connected by a hinge; a pressure sensor is arranged in the box body, and a pressure gauge is arranged on the outside of the box body and connected to the pressure sensor; the inner wall of the box body, the outer surface of the lifting platform, and the outer surface of the replaceable sample table 1 are all sprayed with black light-absorbing paint; and metal tape is pasted on the outer surface of the box body.

[0050] like Figure 5 As shown, the electrochemical corrosion sample table is composed of a sample table body 1, an electrochemical workstation and a temperature sensor 101-12. The electrochemical workstation includes a working electrode, a reference electrode, a sample electrode sheet 101-4, a power supply and an electrochemical analysis system; the sample table body 1 is provided with a sample slot 101-1, a solution slot 101-3, a wire hole, a working electrode jack 101-6 and a reference electrode jack 101-7; the sample and the sample slot 101-1 are sealed by an insulating sealing ring 101-2; the solution slot 101-3 is provided above the sample slot 101-1, and the solution slot 101-3 is provided with a liquid inlet and a liquid outlet; the top of the sample is in contact with the liquid in the solution slot 101-3; the bottom of the sample is in contact with the top surface of the sample electrode sheet 101-4 The sample electrode sheet 101-4 is connected to an external power supply through an electrode sheet wire 101-5; a temperature sensor 101-12 is provided at the bottom of the sample tank 101-1, and the temperature sensor 101-12 is connected to a temperature information collector 18 through a temperature sensor wire 101-13, and the temperature information collector 18 is also connected to a computer information collection system 22; the electrode sheet wire 101-5 and the temperature sensor wire 101-13 pass through the corresponding wire holes; the working electrode is inserted into the working electrode socket 101-6, and the reference electrode is inserted into the reference electrode socket 101-7, and the working electrode and the reference electrode are respectively connected to an external power supply and an electrochemical analysis system through corresponding working electrode wires 101-8 and reference electrode wires 101-9. The electrochemical corrosion sample table is connected to the upper table surface of the lifting table through a bolt hole 101-14 at the bottom.

[0051] like Figure 6 As shown, the spray corrosion sample stage 102 is composed of a sample stage body 2, a temperature sensor 2 102-4 and a sprayer 102-2; a sample slot 2 102-1 is arranged on the sample stage body 2, a temperature sensor 2 102-4 is arranged at the bottom of the sample slot 2 102-1, and the temperature sensor 2 102-4 is connected to the temperature information collector 18 through a temperature sensor 2 wire 102-5; a sprayer 102-2 is arranged on one side of the upper part of the sample slot 2 102-1, and the nozzle of the sprayer 102-2 is connected to the liquid inlet pipe through a spray solution pipeline 102-3. The spray corrosion sample stage 102 is connected to the upper table of the lifting platform through a bolt hole 2 102-6 at the bottom.

[0052] like Figure 7As shown, the gas corrosion sample stage 103 is composed of a sample stage body 3 and a temperature sensor 3 103-2; a sample slot 3 103-1 is provided on the top of the sample stage body 3, a temperature sensor 3 103-2 is provided on the bottom of the sample slot 3 103-1, and the temperature sensor 3 103-2 is connected to the temperature information collector 18 through a temperature sensor wire 3 103-3; the gas corrosion sample stage 103 is connected to the upper surface of the lifting platform through a bolt hole 3 103-4 at the bottom. Figure 8 As shown, the light corrosion sample stage 104 is composed of a sample stage body 4 and a spectrometer sensor; a spectrometer sensor slot 104-1 is provided on the top of the sample stage body 4, a spectrometer sensor is provided in the spectrometer sensor slot 104-1, and the spectrometer sensor is connected to the computer information acquisition system 22 through a spectrometer sensor wire 104-2. The gas corrosion sample stage 103 is connected to the upper surface of the lifting platform through a bolt hole 104-3 at the bottom.

[0053] The light-gas-liquid coupled corrosion test method of the present invention comprises the following steps:

[0054] 1) Selection and installation of sample stage:

[0055] Select the corresponding replaceable sample stage 1 according to the type of corrosion test, install the replaceable sample stage 1 on the lifting platform, place the sample on the top of the replaceable sample stage 1 or in the corresponding sample slot, and use the lifting platform to adjust the height of the replaceable sample stage 1 so that the sample is in the set test area; the corrosion test includes light corrosion test, electrochemical corrosion test, spray corrosion test and gas corrosion test, and the light corrosion sample stage 104, electrochemical corrosion sample stage 101, spray corrosion sample stage 102 or gas corrosion sample stage 103 are selected accordingly; connect the replaceable sample stage 1 with the corresponding gas supply system, liquid supply system, computer information acquisition system 22 and computer control system 23;

[0056] 2) Corrosion test:

[0057] (1) When conducting a light corrosion test, the computer control system 23 is used to control the on / off, current and voltage intensity of each monochromatic LED 11-1 in the LED matrix 11-2, thereby adjusting the irradiance and spectral distribution of the light irradiated to the sample surface; the spectroscopic and morphological information of the sample is collected by the spectrometer and camera device 12, and the collected information is transmitted to the computer information collection system 22;

[0058] (2) When conducting a gas corrosion test, the atmosphere composition in the device body 8 is adjusted by using an atmosphere controller or the device body 8 is evacuated by using a vacuum pump through the computer control system 23; thermodynamic and morphological information of the sample is collected by using a temperature sensor and a camera device, and the collected information is transmitted to the computer information collection system 22;

[0059] (3) When conducting an electrochemical corrosion test, an electrochemical workstation is established, and the computer control system 23 is used to control the electrolyte to be input into the solution tank 101-3 by using a solution adjustment device; the electrochemical workstation, temperature sensor, and camera device are used to collect electrochemical, thermodynamic, and morphological information of the sample, and the collected information is transmitted to the computer information acquisition system 22;

[0060] (4) When performing the spray corrosion test, the computer control system 23 controls the corrosion solution to be sprayed onto the sample surface through the nozzle of the sprayer 102-2 by using the solution adjustment device; the thermodynamic and morphological information of the sample is collected by the temperature sensor and the camera device, and the collected information is transmitted to the computer information collection system 22;

[0061] 3) Combined corrosion test:

[0062] Carry out combined corrosion tests of phosgene-gas, phosgene-liquid, and phosgene-gas-liquid as needed.

[0063] The device body 8 is a box-shaped structure, with a hinged door at the front, and a sealing ring is provided at the connection to maintain air tightness. A barometer is installed on the outside of the box to indicate the air pressure in the cavity. All inner walls and surfaces of all internal components of the box are sprayed with black light-absorbing paint to reduce the error caused by reflection, and all outer surfaces of the device body are affixed with metal tape to isolate the influence of ambient light.

[0064] A positioning hole and a heat sink hole are provided at the center of the top plate of the device body 8. The light source lamp board 11 is connected to the device body 8 by bolts using the positioning holes 11-5 provided at the four corners, and is connected to the metal heat sink 9-1 at the bottom of the heat sink 9 by bolts using the two positioning holes 11-6 provided in the middle. All bolted joints are sealed with sealing rings 25 to maintain airtightness. A heat conducting structure 10, such as a heat conducting sheet or heat conducting silicone grease, is provided between the light source lamp board 11 and the metal heat sink 9-1 of the heat sink 9 to improve heat dissipation efficiency.

[0065] The bottom of the light source lamp board 11 is welded with an LED matrix 11-2 composed of monochromatic LEDs 11-1 with different wavelengths, and is connected to a light source driving board 17 through LED wires 11-3 and wiring terminals 11-4 led out from both sides. The light source driving board 17 can control the current, voltage and opening and closing of each monochromatic LED 11-1. The light source driving board 17 is connected to a computer control system 23 in a host computer 24.

[0066] The spectrometer and the camera device 12 are installed in an inclined hole opened on one side of the upper part of the device body 8, and are sealed by a rubber plug at the installation position, and the airtightness of the box body is maintained by the sealing plug.

[0067] The replaceable sample stage 1 of the present invention includes four sample stages for realizing different functions. Each sample stage has a uniform size. Bolt holes are respectively provided at the bottom of the sample stage for connecting with the upper platform 2 of the lifting platform by bolts. The base 4 of the lifting platform is connected to the bottom plate of the device body 8 by bolts. The upper platform 2 of the lifting platform can move up and down under the drive of the lifting mechanism 3. All wires and pipes in the replaceable sample stage 1 pass through the holes provided in the sample stage.

[0068] In the electrochemical corrosion sample stage 101, the outer side of the sample tank 101-1 is sealed by an insulating sealing ring 101-2, the upper part contacts the solution tank 101-3, and the lower part contacts the sample electrode sheet 101-4 and the temperature sensor 101-12 connected to the corresponding wire. The sample electrode sheet 101-4 is only conductive in the area in contact with the sample, and the other areas are insulated. The working electrode and the reference electrode of the electrochemical workstation are correspondingly inserted into the working electrode jack 101-6 and the reference electrode jack 101-7.

[0069] In the spray corrosion sample platform 102, the nozzle of the sprayer 102-2 is placed on the upper side of the sample tank 102-1, connected to the liquid inlet tank 14 through the spray solution pipeline 102-3 and the liquid inlet peristaltic pump 6, and the liquid outlet of the spray corrosion sample platform 102 is connected to the liquid outlet tank 13 through the liquid outlet peristaltic pump 5.

[0070] In the photocorrosion sample stage 104, the spectrometer sensor slot 104-1 is used to place the spectrometer sensor, which is connected to the computer information acquisition system 22 in the host computer 24 through the spectrometer sensor wire 104-2 to complete the detection and calibration of the light source spectrum.

[0071] In the gas corrosion sample table 103, the atmosphere controller 16 is connected to the vacuum pump through the vacuum pump connecting pipe 16-3, and is connected to the gas source through the gas source connecting pipe 16-2. By rotating the knob 16-1 on the atmosphere controller 16, it can be switched to connect to the vacuum pump or the gas source; the gas valve 15 driven by the stepper motor is connected to the atmosphere controller 16 and the gas inlet and outlet 7 on the device body 8 through a pipeline.

[0072] The liquid flow rate of the peristaltic pump and the rotation amount of the stepper motor can be adjusted by the computer control system 23, so as to control the liquid flow rate of the inlet and outlet, the spray volume, the opening of the gas valve, and the upper table height of the sample table. The spectrometer and the camera device 12 are connected to the computer information acquisition system 22, and can collect sample information at any time. The temperature information collector is connected to the computer control system 23 and the computer information acquisition system 22 in the host computer, and can convert the acquired temperature signal into the signal required by the computer information acquisition system 22. The temperature measurement range, detection frequency and detection duration of the temperature sensor are controlled by the instructions of the computer control system 23, and the collected temperature data is obtained by the computer information acquisition system 22.

[0073] The following embodiments are implemented on the premise of the technical solution of the present invention, and provide detailed implementation methods and specific operation processes, but the protection scope of the present invention is not limited to the following embodiments.

[0074] [Example 1]

[0075] In this embodiment, the light-gas-liquid coupled corrosion test device includes a device body, a lifting platform, a replaceable sample platform, a light source system, a gas supply system, a liquid supply system and a host computer.

[0076] In this embodiment, the device body is made of a 4 mm thick acrylic plate to reduce the overall weight. In this embodiment, the black light-absorbing paint inside the device body and the metal tape outside the device body are used to shield the ambient light and internal reflection interference.

[0077] In this embodiment, a lifting platform is provided in the enclosed space of the device body, and a replaceable sample stage is provided on the lifting platform; the replaceable sample stage includes a light corrosion sample stage, an electrochemical corrosion sample stage, a spray corrosion sample stage and a gas corrosion sample stage. The sample stage body is made of plastic or stainless steel according to the working temperature. All wires and pipes led out of the device body are sealed with sealing rings at the lead-out points to ensure the airtightness inside the device body.

[0078] In this embodiment, the light source system is composed of a light source lamp board, a heat sink and a light source adjustment device (LED light source driver board). The LED matrix is ​​composed of multiple monochromatic LEDs with different wavelengths. The current, voltage and opening and closing of the monochromatic LEDs are controlled by the LED light source driver board, thereby controlling the spectrum and irradiance of the light source. The type of monochromatic LED in the LED matrix can be adjusted, the number can be increased or decreased, and the light source parameters can be controlled in conjunction with a computer control system. When selecting a monochromatic LED, it is necessary to select one with uniform irradiance within the irradiation range, and the angle between the outermost monochromatic LED of the LED matrix and the central axis of the upper surface of the sample table is less than 10°.

[0079] The height of the sample stage can be adjusted by the lifting platform, and the distance between the sample and the LED matrix is ​​related to the irradiance it receives. Fig. 9 As shown, when the LED matrix is ​​composed of 3 rows × 3 columns of LEDs, which are composed of 4 monochromatic infrared LEDs with a wavelength of 850nm, an illumination half-angle of 40°, and a total irradiation flux of 960mW, and 5 monochromatic ultraviolet LEDs with a wavelength of 365nm, an illumination half-angle of 57.5°, and a total irradiation flux of 1400mW, the irradiance is related to the distance from the sample to the LED matrix.

[0080] The heat dissipation power of the radiator is more than twice the total power of the light source lamp board, ensuring that the optical performance does not change when the monochrome LED is working.

[0081] In this embodiment, the gas supply system is composed of a gas source, a vacuum pump, and an atmosphere adjustment device (including an atmosphere controller, a gas valve, and a gas supply controller); the gas source includes an air source, an oxygen source, a hot air source, and a cold air source containing ozone. The atmosphere controller selects different gas sources or vacuumizes through a knob, and the computer control system automatically controls according to the settings. The flow rate of the air flow is adjusted by the opening of the gas valve. When the device body is vacuumed, the vacuum pump is used to evacuate, exhaust, and maintain the air pressure. A gas flow meter is provided on the downstream pipeline of the gas valve.

[0082] In this embodiment, the liquid supply system is composed of a liquid inlet tank, a liquid outlet tank and a solution regulating device (including a liquid inlet peristaltic pump, a liquid outlet peristaltic pump and a liquid inlet and outlet controller). The speed of the liquid inlet peristaltic pump and the liquid outlet peristaltic pump is adjusted to control the amount of solution in the solution tank in the electrochemical corrosion sample station, and the solution composition in the solution tank is adjusted by adding different solutions to the liquid inlet tank.

[0083] In this embodiment, the information acquisition system includes a temperature sensor, a spectrometer, a spectrometer sensor and a camera device; the temperature sensor selects a platinum thermal resistor or a thermocouple according to the operating temperature range. The control ends of the lifting control device, the light source adjustment device, the atmosphere adjustment device and the solution adjustment device are respectively connected to the computer control system; the computer information acquisition system and the computer control system constitute a host computer. The camera device includes a thermal imaging module, which can capture the surface temperature distribution of the sample. The acquisition range of the spectrometer is larger than the spectral range of the LED matrix.

[0084] The computer information acquisition system is used to collect the fluorescence spectrum and other signals of the sample obtained by the spectrometer in real time, the sample temperature information obtained by the temperature information collector, and the optical morphology information taken by the camera. The host computer can also obtain the electrochemical information of the electrochemical workstation. In addition, the light source spectrum information can be detected and calibrated through the spectrometer sensor.

[0085] After replacing the sample stage, the computer control system can be used to perform the test according to the preset program and the corresponding corrosion test requirements. The computer information acquisition system automatically collects relevant test data, and automatically processes and records the data.

[0086] [Example 2]

[0087] In this embodiment, the light-gas-liquid coupled corrosion test device of Embodiment 1 is used to carry out the light-atmosphere-spray corrosion test of metal.

[0088] The monochromatic LEDs in the light source matrix are selected according to the interval of every 100nm in the solar spectrum range, and the compressed air source is connected through the knob on the atmosphere selector. The photocorrosion sample stage is installed on the lifting platform, and the spectrometer sensor is installed on the photocorrosion sample stage. The lifting range, lifting speed and dwell time of the lifting platform are pre-set in the computer control system, the gas valve and LED matrix are opened, and the computer information acquisition system is used to obtain the light source spectrum and irradiance data obtained by the spectrometer when the sample stage is at different heights, and the light source is inspected and calibrated.

[0089] Remove the light corrosion sample stage, install the spray corrosion sample stage on the lifting platform, deliver the sodium chloride solution with a mass concentration of 3.5% to the sprayer through the spray solution pipeline, put the SUS304 stainless steel plate (sample) into the second sample tank, set the test program in the computer control system, that is, spray once at 8:00 am and 20:00 pm every day, each spray volume is 0.5 ml, and the spray time is 2 min. The illumination time is from 8:00 am to 20:00 pm. During the illumination time, the computer control system controls the power supply mode to each monochromatic LED through the light source driver board to change the irradiance of the LED matrix, and adjusts the irradiance of the LED matrix according to the daily change in the irradiance of sunlight. Continue to illuminate and spray for 15 days, and the computer information acquisition system collects the sample temperature and spectrum data during the test. After 15 days, the test is completed, the liquid supply system and the LED matrix are turned off, and the sample is taken out.

[0090] [Example 3]

[0091] In this embodiment, the light-gas-liquid coupled corrosion test device of Embodiment 1 is used to carry out a light-electrochemical corrosion test of a metal.

[0092] Select 365nm wavelength ultraviolet monochromatic LED to form LED matrix, put the copper block (sample) into the sample slot 1 of the electrochemical corrosion sample table, input the mixed solution of 3.5% sodium chloride and 3.5% sodium sulfate into the solution slot through the liquid inlet peristaltic pump, and connect the outlet tank through the liquid outlet peristaltic pump. The height difference between the top surface of the sample and the liquid surface is 5mm, and the solution circulation speed is 1ml / min.

[0093] Light intensity selected 100mW / cm 2 .

[0094] Insert the saturated calomel electrode and the platinum electrode into the working electrode jack and the reference electrode jack respectively. The working electrode of the electrochemical workstation is connected to the electrochemical workstation through the working electrode wire and the reference electrode is connected to the electrochemical workstation through the reference electrode wire. Start the LED matrix switch and the electrochemical workstation switch through the computer control system to carry out the electrochemical corrosion test. The sample temperature, spectral data and electrochemical data during the test are collected by the computer information acquisition system. After the test is completed, turn off the LED matrix switch and the electrochemical workstation and take out the sample.

[0095] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A light-gas-liquid coupled corrosion test device, It is characterized in that The invention comprises a device body, a lifting platform, a replaceable sample platform, a light source system, an air supply system, a liquid supply system, a computer information acquisition system and a computer control system; the device body has a closed space, a lifting platform is arranged at the bottom of the closed space, and the replaceable sample platform is arranged on the lifting platform; the replaceable sample platform comprises a photocorrosion sample platform, an electrochemical corrosion sample platform, a spray corrosion sample platform and a gas corrosion sample platform, and one of them is installed on the lifting platform; a light source system is arranged on the top of the device body directly above the replaceable sample platform, and the light source system is provided with an LED matrix composed of monochromatic LEDs of different wavelengths; the air supply system and the liquid supply system are arranged outside the device body, and an air inlet and outlet pipes are arranged on the device body and connected to the air supply system; the electrochemical corrosion sample platform is provided with a solution tank and an electrochemical workstation, and the solution tank is connected to the liquid supply system through a liquid inlet pipe and a liquid outlet pipe; the computer information acquisition system comprises a temperature sensor, a spectrometer sensor sensor, spectrometer and camera device; the spectrometer and camera device are arranged on one side of the upper part of the device body; the tops of the electrochemical corrosion sample stage, the spray corrosion sample stage and the gas corrosion sample stage are all provided with sample slots, the temperature sensors are arranged at the bottoms of the corresponding sample slots, and the temperature sensors are connected to the temperature information collector; the top of the optical corrosion sample stage is provided with a spectrometer sensor slot, and the spectrometer sensor is arranged in the spectrometer sensor slot; the lifting platform is provided with a lifting control device, the light source system is provided with a light source adjustment device, the gas supply system is provided with an atmosphere adjustment device, and the liquid supply system is provided with a solution adjustment device; the control ends of the lifting control device, the light source adjustment device, the atmosphere adjustment device and the solution adjustment device are respectively connected to the computer control system, and the signal output ends of the temperature information collector, the spectrometer, the spectrometer sensor and the camera device are respectively connected to the computer information acquisition system; the computer information acquisition system and the computer control system constitute a host computer.

2. A light-gas-liquid coupled corrosion test device according to claim 1, It is characterized in that The light source system consists of a light source lamp board, a radiator and a light source adjustment device; the light source adjustment device is an LED light source driver board; the radiator consists of a radiator shell, a metal heat spreader, a thermal copper tube, cooling fins and a fan; a fan is arranged at the air intake of the radiator shell, and cooling fins are arranged at the air outlet of the radiator shell. The top of the light source lamp board is in close contact with the metal heat spreader, and the metal heat spreader is connected to the cooling fins through a plurality of thermal steel tubes; an LED matrix is ​​arranged at the bottom of the light source lamp board, and the LED matrix is ​​connected to the LED light source driver board through LED wires, and the control signal input end of the LED light source driver board is connected to a computer control system.

3. A light-gas-liquid coupled corrosion test device according to claim 2, It is characterized in that The gas supply system is composed of a gas source, a vacuum pump and an atmosphere regulating device; the atmosphere regulating device includes an atmosphere controller, a gas valve and a gas supply controller; the gas source includes at least a compressed air source, an oxygen source, a hot air source and a cold air source containing ozone; the gas source and the vacuum pump are respectively connected to the inlet of the atmosphere controller, and the outlet of the atmosphere controller is connected to the inlet and outlet pipes on the device body through a gas pipeline, and a gas valve is arranged on the gas pipeline, and the gas valve is driven by a stepper motor; the control ends of the stepper motor and the vacuum pump are connected to the gas supply controller, and the gas supply controller is also connected to a computer control system.

4. The light-gas-liquid coupled corrosion test device according to claim 1, It is characterized in that The liquid supply system is composed of a liquid inlet tank, a liquid outlet tank and a solution regulating device, wherein the solution regulating device comprises a liquid inlet peristaltic pump, a liquid outlet peristaltic pump and a liquid inlet and outlet controller; the liquid inlet tank is connected to the solution tank via a liquid inlet pipe, the liquid outlet tank is connected to the solution tank via a liquid outlet pipe, the liquid inlet pipe and the liquid inlet of the solution tank, and the liquid outlet pipe and the liquid outlet of the solution tank are connected via quick connectors; the liquid inlet pipe is provided with a liquid inlet peristaltic pump, and the liquid outlet pipe is provided with a liquid outlet peristaltic pump; the control ends of the liquid inlet peristaltic pump and the liquid outlet peristaltic pump are respectively connected to the liquid inlet and outlet controllers, and the liquid inlet and outlet controllers are also connected to a computer control system.

5. The light-gas-liquid coupled corrosion test device according to claim 1, It is characterized in that The lifting platform is composed of a base, a lifting mechanism, an upper table and a lifting controller; the lifting mechanism is a spiral lifting mechanism driven by a lifting stepping motor; the control end of the lifting stepping motor is connected to the lifting controller, and the lifting controller is also connected to a computer control system.

6. The light-gas-liquid coupled corrosion test device according to claim 1, It is characterized in that The device body consists of a box body and a box door, the box door is arranged on the front side of the box body, and the box door and the box body are rotatably connected by a hinge; a pressure sensor is arranged in the box body, and a pressure gauge is arranged on the outside of the box body and connected to the pressure sensor; the inner wall of the box body, the outer surface of the lifting platform, and the outer surface of the replaceable sample table are all sprayed with black light-absorbing paint; and metal tape is pasted on the outer surface of the box body.

7. The light-gas-liquid coupled corrosion test device according to claim 1, It is characterized in that The electrochemical corrosion sample platform is composed of a sample platform body, an electrochemical workstation and a temperature sensor. The electrochemical workstation includes a working electrode, a reference electrode, a sample electrode sheet, a power supply and an electrochemical analysis system. The sample platform body is provided with a sample slot, a solution slot, a wire hole, a working electrode jack and a reference electrode jack. The sample and the sample slot are sealed by an insulating sealing ring. The solution slot is arranged above the sample slot, and the solution slot is provided with a liquid inlet and a liquid outlet. The top of the sample is in contact with the liquid in the solution slot. The bottom of the sample is in contact with the top surface of the sample electrode sheet, and the sample electrode sheet is connected to an external power supply through an electrode sheet wire. A temperature sensor is arranged at the bottom of the sample slot, and the temperature sensor is connected to a temperature information collector through a temperature sensor wire, and the temperature information collector is also connected to a computer information collection system. The electrode sheet wire and the temperature sensor wire connected to the sample electrode sheet are passed through corresponding wire holes. The working electrode is inserted into the working electrode jack, and the reference electrode is inserted into the reference electrode jack. The working electrode and the reference electrode are respectively connected to an external power supply and an electrochemical analysis system through corresponding working electrode wires and reference electrode wires.

8. The light-gas-liquid coupled corrosion test device according to claim 1, It is characterized in that The spray corrosion sample platform is composed of a sample platform body 2, a temperature sensor 2 and a sprayer; a sample slot 2 is arranged on the sample platform body 2, a temperature sensor 2 is arranged at the bottom of the sample slot 2, and the temperature sensor 2 is connected to a temperature information collector through a temperature sensor 2 wire; a sprayer is arranged on one side of the upper part of the sample slot 2, and the nozzle of the sprayer is connected to a liquid inlet pipe through a spray solution pipeline.

9. The light-gas-liquid coupled corrosion test device according to claim 1, It is characterized in that The gas corrosion sample platform is composed of a sample platform body three and a temperature sensor three; a sample slot three is arranged on the top of the sample platform body three, a temperature sensor three is arranged on the bottom of the sample slot three, and the temperature sensor three is connected to the temperature information collector through a wire; the light corrosion sample platform is composed of a sample platform body four and a spectrometer sensor; a spectrometer sensor slot is arranged on the top of the sample platform body four, a spectrometer sensor is arranged in the spectrometer sensor slot, and the spectrometer sensor is connected to the computer information collection system through the spectrometer sensor wire.

10. A light-gas-liquid coupled corrosion test method, implemented based on the light-gas-liquid coupled corrosion test device according to any one of claims 1 to 9, It is characterized in that The steps include: 1) Selection and installation of sample stage: Select the corresponding replaceable sample stage according to the type of corrosion test, install the replaceable sample stage on the lifting platform, place the sample on the top of the replaceable sample stage or in the corresponding sample slot, and use the lifting platform to adjust the height of the replaceable sample stage so that the sample is in the set test area; the corrosion test includes light corrosion test, electrochemical corrosion test, spray corrosion test and gas corrosion test, and select the light corrosion sample stage, electrochemical corrosion sample stage, spray corrosion sample stage or gas corrosion sample stage accordingly; connect the replaceable sample stage with the corresponding gas supply system, liquid supply system, computer information acquisition system and computer control system; 2) Corrosion test: (1) When conducting the light corrosion test, the computer control system is used to control the on / off, current and voltage intensity of each monochromatic LED in the LED matrix by using the light source adjustment device, thereby adjusting the irradiance and spectral distribution of the light irradiated to the sample surface; the spectroscopic and morphological information of the sample is collected by the spectrometer and the camera device, and the collected information is transmitted to the computer information collection system; (2) When conducting a gas corrosion test, the atmosphere composition in the device body is adjusted by using an atmosphere controller through a computer control system, or the device body is evacuated by using a vacuum pump; the thermodynamic and morphological information of the sample is collected by a temperature sensor and a camera device, and the collected information is transmitted to the computer information collection system; (3) When conducting an electrochemical corrosion test, an electrochemical workstation is established, and the electrolyte is input into the solution tank using a solution regulator through a computer control system; the electrochemical, thermodynamic and morphological information of the sample is collected through the electrochemical workstation, temperature sensor and camera device, and the collected information is transmitted to the computer information acquisition system; (4) When conducting a spray corrosion test, the computer control system controls the corrosion solution to be sprayed onto the sample surface through the spray nozzle of the sprayer using a solution regulating device; the thermodynamic and morphological information of the sample is collected through a temperature sensor and a camera device, and the collected information is transmitted to the computer information collection system; 3) Combined corrosion test: Carry out combined corrosion tests of phosgene-gas, phosgene-liquid, and phosgene-gas-liquid as needed.

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