Metal atmospheric corrosion monitoring sensor

Abstract

The invention provides a metal atmospheric corrosion monitoring sensor which comprises a metal base material, a hydrophobic insulating plate, a conductive material layer and a hydrophilic coating, wherein 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 located 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; wiring wires are led out from the metal base material and the conductive material layer respectively and connected with a zero-resistance ampere meter, and a loop is formed among the metal base material, the zero-resistance ampere meter and the conductive material layer. The processing technology is simple, the product consistency is easy to control, and the detection sensitivity is high.

Description

【Technical field】 [0001] The present application relates to the technical field of sensors, in particular to a monitoring sensor used to measure the corrosion variation of metal materials when they are exposed to the atmosphere. 【Background technique】 [0002] Metal materials exposed to the atmosphere are prone to corrosion, reducing the mechanical and electrical properties of the equipment. In order to obtain information on the corrosion status of metals, an online monitoring device for atmospheric corrosion can be installed. The core of the device is the atmospheric corrosion monitoring sensor, which is a key component for converting corrosion signals into electrical signals. The main principle of the atmospheric corrosion monitoring sensor is to capture the amount of charge transfer in the metal corrosion process, and use the amount of charge to represent the degree of corrosion. The faster the metal corrosion rate, the higher the degree, and the more corrosion charge, ...

AI Technical Summary

Problems solved by technology

In terms of structure and process, the main problems of the sensor include: structural features have high requirements on the manufacturing process, the consistency of molded products is difficult to control, the size of the material reduces the measurement sensitivity, and the structural shape affects the service life

The above problems lead to the poor monitoring effect and high price of the existing sensors, which cannot meet the conditions for large-scale promotion

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