CN212540083U - Metal atmospheric corrosion monitoring sensor - Google Patents
Metal atmospheric corrosion monitoring sensor Download PDFInfo
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- CN212540083U CN212540083U CN202021445752.6U CN202021445752U CN212540083U CN 212540083 U CN212540083 U CN 212540083U CN 202021445752 U CN202021445752 U CN 202021445752U CN 212540083 U CN212540083 U CN 212540083U
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Abstract
The metal atmospheric corrosion monitoring sensor comprises a metal substrate, a hydrophobic insulating plate, a conductive material layer and a hydrophilic coating; the hydrophobic insulating plate is attached to the metal base material, and the area of the hydrophobic insulating plate is smaller than the surface area of the metal base material; the conductive material layer is arranged on the hydrophobic insulating plate, the surface area of the conductive material layer is smaller than that of the hydrophobic insulating plate, and the edge of the conductive material layer is positioned within the edge range of the hydrophobic insulating plate; the hydrophilic coating is coated between the edge of the conductive material layer and the edge of the hydrophobic insulating plate; and leading out wiring from the metal base material and the conductive material layer respectively, connecting the wiring with a zero resistance ammeter, and forming a loop among the metal base material, the zero resistance ammeter and the conductive material layer. The method has the advantages of simple processing technology, easy control of product consistency and high detection sensitivity.
Description
[ technical field ] A method for producing a semiconductor device
The application relates to the technical field of sensors, in particular to a monitoring sensor for measuring corrosion change rules when a metal material is exposed in an atmospheric environment.
[ background of the invention ]
Metallic materials exposed to the atmosphere are susceptible to corrosion, reducing the mechanical and electrical properties of the equipment. In order to obtain the corrosion state information of the metal, an atmospheric corrosion on-line monitoring device can be installed. The core of the device is an atmospheric corrosion monitoring sensor which is a key component for converting a corrosion signal into an electric signal. The main principle of the atmospheric corrosion monitoring sensor is to capture the charge transfer amount of the metal corrosion process, and the corrosion degree is represented by the charge amount. The faster and more extensive the metal is corroded, the more the amount of corrosion charge, indicating that the environment is more corrosive to the metal. The sensor is a consumption type electrochemical device, and the performance of the sensor changes obviously along with the use time. Therefore, the performance of the sensor restricts the application of the metal corrosion on-line monitoring technology.
The structure and process of the sensor are the core factors to improve its performance. The major problems with sensors in terms of structure and process include: the structural characteristics have high requirements on the manufacturing process, the consistency of the formed product is difficult to control, the material size reduces the measurement sensitivity, and the structural shape influences the service life. The problems lead to poor monitoring effect and high price of the existing sensor, and the condition of large-scale popularization cannot be met. In order to improve the performance of the metal atmospheric corrosion monitoring sensor, improvement on two aspects of structure and process is urgently needed.
Therefore, it is necessary to provide a metal atmospheric corrosion monitoring sensor with high sensitivity, long service life and accurate detection effect.
[ summary of the invention ]
The application aims to provide a metal atmospheric corrosion monitoring sensor with high sensitivity.
In order to realize the purpose of the application, the following technical scheme is provided:
the application provides a metal atmospheric corrosion monitoring sensor, which comprises a metal substrate, a hydrophobic insulating plate, a conductive material layer and a hydrophilic coating; the hydrophobic insulating plate is attached to the metal base material, and the area of the hydrophobic insulating plate is smaller than the surface area of the metal base material; the conductive material layer is arranged on the hydrophobic insulating plate, the surface area of the conductive material layer is smaller than that of the hydrophobic insulating plate, and the edge of the conductive material layer is positioned within the edge range of the hydrophobic insulating plate; the hydrophilic coating is coated between the edge of the conductive material layer and the edge of the hydrophobic insulating plate; and leading out wiring from the metal base material and the conductive material layer respectively, connecting the wiring with a zero resistance ammeter, and forming a loop among the metal base material, the zero resistance ammeter and the conductive material layer. This application technical scheme adopts simple stacked structure, and processing technology is simple, and the product uniformity is easily controlled, utilizes the adhesion and the ductility that hydrophilic coating improved thin liquid film, increases the corrosion current under the low humidity to improve detectivity.
In some embodiments, the hydrophobic insulating plate and the layer of conductive material are each a comb-like structure comprising a base portion integrally connected and at least two comb-like strips extending from one side of the base portion.
In some embodiments, the comb-like strips of the comb-like structure of the layer of conductive material are centrally disposed on the comb-like strips of the comb-like structure of the hydrophobic insulating plate. Furthermore, the distance between the side edge of the comb strip of the conductive material layer and the side edge of the comb strip of the hydrophobic insulating plate is 0.05-0.5 mm.
In a specific embodiment, the hydrophilic coating is coated between two side edges of the comb-shaped strip of the comb-shaped structure of the conductive material layer and two side edges of the comb-shaped strip of the comb-shaped structure of the hydrophobic insulating plate. Furthermore, the hydrophilic coating is rectangular and covers gaps between edges on two sides of the comb-shaped strip of the comb-shaped structure of the conductive material layer and edges on two sides of the comb-shaped strip of the comb-shaped structure of the hydrophobic insulating plate.
In some embodiments, the connection between the comb-shaped strips of the comb-shaped structure of the hydrophobic insulating plate is provided with an inward arc-shaped fillet to avoid water drops residing at the sharp corner. Furthermore, the tail end of the comb-shaped strip of the comb-shaped structure of the hydrophobic insulating plate is provided with an arc-shaped fillet.
In a specific embodiment, the metal substrate is a metal or alloy material with a smooth surface and no corrosion.
In a specific embodiment, the conductive material layer may be a conductive material that is not easily corroded in air, such as gold plating, silver plating, copper plating, nickel plating, or a carbon film. The hydrophobic insulating plate can be an epoxy resin plate, a silicon rubber plate, a teflon plate and the like, and the hydrophilic coating can be organic glue containing polar groups.
In some embodiments, the hydrophobic insulator plate has a thickness of 0.02mm to 0.1 mm.
Compared with the prior art, the method has the following advantages:
(1) the conductive material layer and the hydrophilic coating can be coated on the surface of the hydrophobic insulating board through factory production;
(2) the consistency of the product is easy to control, and the insulating plate, the conductive material layer and the hydrophilic coating can be designed and manufactured by means of printed circuit board design software and a processing method;
(3) the size of the material can reach 0.01mm level, and the adhesion and the ductility of the thin liquid film are improved by utilizing the hydrophilic coating, so that the corrosion current under low humidity is increased;
(4) the comb-shaped structure prevents water drops from accumulating on the surface of the sensor, slows down the corrosion consumption process of the measured metal and prolongs the service life of the sensor.
[ description of the drawings ]
FIG. 1 is a schematic structural diagram of a metal atmospheric corrosion monitoring sensor provided in an embodiment of the present application;
FIG. 2 is a cross-sectional view of a metal atmospheric corrosion monitoring sensor according to an embodiment of the present disclosure;
fig. 3 is a working principle diagram of the metal atmospheric corrosion monitoring sensor provided in the embodiment of the present application.
[ detailed description ] embodiments
Referring to fig. 1 and 2, a schematic structural diagram and a cross-sectional view of an embodiment of a metal atmospheric corrosion monitoring sensor according to the present invention include a metal substrate 100, a hydrophobic insulating plate 200, a conductive material layer, and a hydrophilic coating 400; the metal substrate 100 is a tested metal material, and the tested metal substrate 100 is a metal or alloy material with a smooth surface and no corrosion, such as iron, aluminum, copper, zinc, galvanized steel, and the like. The conductive material layer is a gold plating layer 300. The hydrophobic insulating plate can be an epoxy resin plate, a silicon rubber plate, a teflon plate and the like, and the hydrophilic coating can be organic glue containing polar groups.
The hydrophobic insulating plate 200 is attached to the metal base material 100, the area of the hydrophobic insulating plate 200 is smaller than the surface area of the metal base material 100, and specifically, the hydrophobic insulating plate 200 is attached to the metal base material 100, and the edge of the hydrophobic insulating plate does not exceed the surface of the metal base material 100.
The gold plating layer 300 is disposed on the hydrophobic insulating plate 200, the surface area of the gold plating layer 300 is smaller than the surface area of the hydrophobic insulating plate 200, and the edge of the gold plating layer 300 is located within the edge range of the hydrophobic insulating plate 200.
In this embodiment, the hydrophobic insulating plate 200 and the gold plating layer 300 are both comb-shaped structures, and each comb-shaped structure includes a base 201 and a base 301 connected integrally, and at least two comb- shaped strips 202 and 302 extending from one side of the base. In this embodiment, four comb- shaped strips 202 and 302 respectively extend from one side of the comb- shaped structure bases 201 and 301 of the hydrophobic insulating plate 200 and the gold-plated layer 300, and the intervals between the four comb-shaped strips 302 of the gold-plated layer 300 are matched with the intervals between the four comb-shaped strips 202 of the hydrophobic insulating plate 200, so that the four comb-shaped strips 302 of the gold-plated layer 300 are respectively disposed on the four comb-shaped strips 202 of the hydrophobic insulating plate 200, the area of each comb-shaped strip 302 of the gold-plated layer 300 is smaller than the area of the comb-shaped strip 202 of the hydrophobic insulating plate 200 below the comb-shaped strip 302, and the edge of the comb-shaped strip 302 of the gold-plated layer 300 is located within the range of the edge of the comb-shaped strip 202 of.
In this embodiment, the comb-shaped strips 302 of the comb-shaped structure of the gold-plated layer 300 are centrally disposed on the comb-shaped strips 202 of the comb-shaped structure of the hydrophobic insulating plate 200, that is, the distances between the two side edges of the comb-shaped strips 302 of the comb-shaped structure of the gold-plated layer 300 and the two side edges of the comb-shaped strips 202 of the comb-shaped structure of the hydrophobic insulating plate 200 are equal or substantially equal. Further, the distance between the side edge of the gold-plated comb-shaped strip 302 and the side edge of the hydrophobic insulating plate comb-shaped strip 202 is 0.05 mm-0.5 mm. In a specific embodiment, the thickness of the hydrophobic insulating plate 200 may be in a range of 0.02mm to 0.1 mm. The gold plating layer 300 may be coated on the surface of the hydrophobic insulating plate 200 through factory production.
The hydrophilic coating 400 is coated between the side edges of the comb-shaped strips 302 of the gold-plated layer 300 and the side edges of the comb-shaped strips 202 of the hydrophobic insulating plate 200; in a specific embodiment, the hydrophilic coating 400 coated between the side edge of the comb-shaped strip 302 of the gold-plated comb-shaped structure and the side edge of the comb-shaped strip 202 of the hydrophobic insulating board comb-shaped structure is rectangular, and is coated on the gap between the side edge of the comb-shaped strip of the gold-plated comb-shaped structure and the side edge of the comb-shaped strip of the hydrophobic insulating board comb-shaped structure in an industrial production.
In this embodiment, the connection between the comb-shaped strips 202 of the comb-shaped structure of the hydrophobic insulating plate 200 is provided with an inward arc-shaped fillet 203, which may form a semicircular concave void, and may avoid water drops residing at the sharp corner. Further, the end of each comb-shaped strip 202 of the comb-shaped structure of the hydrophobic insulating plate 200 is provided with an arc-shaped fillet 204, and specifically, a semicircular end portion may be formed at the end of each comb-shaped strip 202. The hydrophilic coating 400 is applied along the straight edges of the side edges of the comb-shaped strips 202 of the hydrophobic insulating plate 200 and is flush with the ends of the comb-shaped strips 302 of the gold-plated layer 300.
Referring to fig. 3, the connection wires 700 are respectively led out from the metal substrate 100 and the gold-plated layer 300 and connected to the zero-resistance ammeter 600, and a loop is formed between the metal substrate 100, the zero-resistance ammeter 600 and the gold-plated layer 300. The gold-plated layer 300 is used as the positive electrode of the metal atmospheric corrosion monitoring sensor, the metal substrate 100 is used as the negative electrode of the metal atmospheric corrosion monitoring sensor, and the positive electrode and the negative electrode are both in compression joint by using gold-plated probes and are led out to be connected with the zero-resistance ammeter 600.
In the embodiment shown in fig. 3, the metal substrate 100 is iron, and when the surface of the metal atmospheric corrosion monitoring sensor is wetted to form a water film 500 and the water film bridges the gold-plated layer 300 and the metal substrate 100 to be tested, the metal atmospheric corrosion monitoring sensor forms a corrosion couple. The metal substrate 100 to be detected in contact with the water film 500 loses electrons to form cations, the current is transferred to the gold-plating layer 300 through the zero-resistance ammeter 600, the gold-plating layer 300 in contact with the water film 500 obtains electrons, the electrons are combined with oxygen and water to form hydroxyl ions, and the corrosion degree of the metal substrate to be detected is detected through detecting the charge transfer amount.
In other embodiments, the conductive material layer may also be a conductive material that is not easily corroded in air, such as silver plating, copper plating, nickel plating, or carbon film.
This application technical scheme adopts simple stacked structure, and processing technology is simple, and the product uniformity is easily controlled, utilizes the adhesion and the ductility that hydrophilic coating improved thin liquid film, increases the corrosion current under the low humidity to improve detectivity.
The above description is only a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any equivalent changes based on the technical solutions of the present application are included in the protection scope of the present application.
Claims (10)
1. A metal atmospheric corrosion monitoring sensor is characterized in that,
which comprises a metal base material, a hydrophobic insulating plate, a conductive material layer and a hydrophilic coating,
the hydrophobic insulating plate is attached to the metal base material, and the area of the hydrophobic insulating plate is smaller than the surface area of the metal base material;
the conductive material layer is arranged on the hydrophobic insulating plate, the surface area of the conductive material layer is smaller than that of the hydrophobic insulating plate, and the edge of the conductive material layer is positioned within the edge range of the hydrophobic insulating plate;
the hydrophilic coating is coated between the edge of the conductive material layer and the edge of the hydrophobic insulating plate;
and leading out wiring from the metal base material and the conductive material layer respectively, connecting the wiring with a zero resistance ammeter, and forming a loop among the metal base material, the zero resistance ammeter and the conductive material layer.
2. The metal atmospheric corrosion monitoring sensor of claim 1 in which said hydrophobic insulating plate and said layer of conductive material are each a comb structure comprising a base integrally connected to one another and at least two comb strips extending from one side of the base.
3. The metal atmospheric corrosion monitoring sensor of claim 2, wherein the hydrophilic coating is coated between two side edges of the comb-shaped strips of the comb-shaped structure of the conductive material layer and two side edges of the comb-shaped strips of the comb-shaped structure of the hydrophobic insulating plate.
4. The metal atmospheric corrosion monitoring sensor of claim 3, wherein the hydrophilic coating is rectangular and covers gaps between two side edges of the comb-shaped strips of the comb-shaped structure of the conductive material layer and two side edges of the comb-shaped strips of the comb-shaped structure of the hydrophobic insulating plate.
5. A metal atmospheric corrosion monitoring sensor as claimed in any one of claims 1 to 4, wherein inward curved fillets are provided at the junctions between the comb-like strips of the comb-like structure of the hydrophobic insulating plate.
6. The metal atmospheric corrosion monitoring sensor of claim 5, wherein the comb-shaped strips of the comb-shaped structure of the hydrophobic insulating plate are provided with arc-shaped fillets at the tail ends.
7. The metal atmospheric corrosion monitoring sensor of any one of claims 1 to 4, wherein the metal substrate is a metal or alloy material with a flat surface and no corrosion, and the conductive material layer is made of one of a gold-plated material, a silver-plated material, a copper-plated material, a nickel-plated material and a carbon film conductive material.
8. The metal atmospheric corrosion monitoring sensor of any one of claims 1 to 4, wherein the thickness of the hydrophobic insulating plate is 0.02mm to 0.1 mm.
9. The metal atmospheric corrosion monitoring sensor of any one of claims 1 to 4, wherein the comb-shaped strips of the comb-shaped structure of the conductive material layer are arranged in the middle of the comb-shaped strips of the comb-shaped structure of the hydrophobic insulating plate.
10. The metal atmospheric corrosion monitoring sensor of claim 9, wherein the distance between the side edge of the comb strip of the conductive material layer and the side edge of the comb strip of the hydrophobic insulating plate is 0.05mm to 0.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021445752.6U CN212540083U (en) | 2020-07-21 | 2020-07-21 | Metal atmospheric corrosion monitoring sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021445752.6U CN212540083U (en) | 2020-07-21 | 2020-07-21 | Metal atmospheric corrosion monitoring sensor |
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| Publication Number | Publication Date |
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| CN212540083U true CN212540083U (en) | 2021-02-12 |
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| CN202021445752.6U Active CN212540083U (en) | 2020-07-21 | 2020-07-21 | Metal atmospheric corrosion monitoring sensor |
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Effective date of registration: 20210825 Address after: 518000 Xili street xilihu town xilihu bank, Nanshan District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN POLYTECHNIC Patentee after: China Southern Power Grid Research Institute Co.,Ltd. Address before: 518000 Guangdong city of Shenzhen province Nanshan District Xili Lake Patentee before: SHENZHEN POLYTECHNIC Patentee before: CSG POWER GRID TECHNOLOGY RESEARCH CENTER Patentee before: China Southern Power Grid Research Institute Co.,Ltd. |