Electrochemical transducer for atmospheric corrosion of metal materials and application thereof

Abstract

The invention discloses an electrochemical transducer for atmospheric corrosion of metal materials and application thereof. The electrochemical transducer is packaged integrally through epoxy cement, an interlayer material is arranged between working electrodes, and gaps between the interlayer material and the working electrodes are filled with the epoxy cement and an insulation material to ensure the insulation state of the interlayer material and the working electrode in the integral packaging. A drainage material is arranged on the interlayer material and used for draining liquid providing electrical conductivity into the interlayer material to enable the surface of the interlayer material to be capable of providing the electrical conductivity to connect working areas of the working electrodes on two sides of the interlayer material. A hole for fixing a reference electrode is arranged in the middle of the interlayer material. The electrochemical transducer can effectively detect real-time electrochemical corrosion of the metal materials in the simulated atmospheric environment, can still effectively detect electrochemical corrosion information even though thick rusty scale is covered on the surfaces of the metal materials under long-time corrosive conditions, avoids influences caused by short circuit, and is simple and convenient to manufacture, low in cost and easy to operate.

Description

technical field [0001] The invention relates to a metal material corrosion sensor, in particular to an electrochemical monitoring and detection technology for testing metal atmospheric corrosion behavior in atmospheric environment. Background technique [0002] The deterioration or destruction of metal materials and their products caused by environmental factors in the atmospheric environment is called atmospheric corrosion. The corrosion of metal materials in the atmospheric environment is relatively slow. The essence of atmospheric corrosion of metal materials is electrochemical corrosion under the electrolyte film. Due to the thickness and continuity of the thin liquid film, electrochemical measurement is difficult. At present, the commonly used electrochemical detection methods for atmospheric corrosion are Kelvin probe (Kelvin) and atmospheric corrosion monitoring (ACM). The basic principle of Kelvin probe technology is that above the metal to be tested, there is an in...

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Problems solved by technology

Atmospheric corrosion sensors commonly used for electrochemical noise are closely arranged three electrodes of the same material. This electrode is suitable for metal materials that corrode very weakly in the atmospheric environment, but for metals with severe corrosion (such as carbon steel), it takes a long time. Atmospheric corrosion over time will cause rust on the surface of the metal material and cause the connection of the three electrodes to cause a short circuit, which seriously affects the detection effect

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