Corrosion electrochemical test device and corrosion electrochemical test method

Abstract

The invention provides an electrochemical corrosion tester and an electrochemical corrosion test method. The electrochemical corrosion tester comprises a detection conductor, wires, and a test system.The detection conductor is used for being placed in a medium, and both ends of the detection conductor are connected to the test system through the wires. According to the electrochemical corrosion test method, the electrochemical corrosion tester is adopted, the detection conductor is placed as a unique detection electrode into the medium to carry out testing without requiring a reference electrode and an auxiliary electrode to be placed in the medium, testing is simple and quick, the application range is wide. The corrosion degree and speed of the detection conductor are acquired at the same time by the simple analysis of a tested electrochemical impedance result, and information is rich and reliable.

Description

technical field [0001] The invention relates to the field of corrosion monitoring and detection, in particular to a corrosion electrochemical testing device and a corrosion electrochemical testing method. Background technique [0002] Corrosion monitoring and detection technology is an important means to evaluate the service life of materials and ensure the safe operation of equipment and facilities, and is widely used in production and life. At present, a variety of corrosion evaluation and monitoring technologies have been developed, mainly including physical methods, chemical methods, electrochemical methods, etc. Among them, the physical method is to use the physical field parameter testing technology to characterize the changes before and after corrosion, such as the changes in magnetic field, electric field, ultrasonic wave, temperature field, sound field, etc., and finally obtain the qualitative information of corrosion. Such technologies include ultrasonic testing, ...

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Problems solved by technology

[0003] Despite years of research, due to the limitations of various testing methods, their application range and reliability still cannot meet the testing requirements of complex and changeable environmental media, and there are the following problems: physical methods only detect changes in physical parameters before and after corrosion , can only describe macroscopic phenomena and cannot fully describe the entire corrosion kinetic process, and there are problems such as inaccurate test data and large errors

In a complex, harsh, high-pressure, high-temperature, high-resistance environment, the failure of the reference and auxiliary electrodes poses a challenge to electrochemical monitoring. The correlation between the measured change rate and the long-term accumulated damage is even more important. Weaknesses of chemical methods that have always been difficult to overcome

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