Multi-channel corrosion monitoring system suitable for studying stress corrosion of metallic materials

Abstract

The invention provides a multi-channel corrosion monitoring system suitable for studying stress corrosion of metal materials, comprising: a multi-channel four-point stress-loaded three-electrode system that realizes water bath heating, and the three-electrode system is connected to a circuit board that controls channel switching. A group of three electrodes is connected to an electrochemical workstation; the four-point stress-loaded sample is connected to a multi-channel stress strain gauge to monitor the stress applied to each group of samples; the multi-channel four-point stress-loaded three-electrode system that realizes water bath heating Including: water bath box, heating rod, electrolyte box, four-point bending stress loading device, reference electrode, counter electrode and air stone. The invention can reasonably and effectively realize the research on multi-channel metal material corrosion and its failure mechanism under the combined effects of structural mechanical response, temperature and cathodic protection in the field of marine engineering.

Description

Technical field [0001] The invention belongs to the field of corrosion and protection of marine engineering, and in particular, a multi-channel corrosion monitoring system suitable for studying the stress of the study material. Background technique [0002] The corrosion of ships and marine structures has caused huge economic losses. Corrosion monitoring can effectively monitor service status of ships and marine engineering structures, and then predict life, which can effectively reduce the loss of corrosion. At present, the industrial system site / laboratory real-time corrosion online monitoring technology is generally only a single object, and the ship and marine engineering structures are not allowed to perform overall and local corrosion monitoring; the monitoring electrochemical parameters are usually potential or current density It is possible to extract less corrosion information and cannot accurately assess the corrosion state of ships and marine engineering structures; ...

AI Technical Summary

Problems solved by technology

At present, the on-site / laboratory real-time corrosion online monitoring technology for industrial systems generally only targets a single object at a time, and it is impossible to monitor the overall and local corrosion of ships and marine engineering structures at the same time; the electrochemical parameters monitored are usually potential or current density. , the corrosion information that can be extracted is less, and it is impossible to accurately evaluate the corrosion state of ships and ocean engineering structures; if monitoring more areas of ships and ocean engineering structures or using a variety of electrochemical parameters for corrosion state evaluation, more equipment is required. More electrochemical monitoring equipment, and more manpower for monitoring and control, complex operation, high equipment and labor costs

When monitoring stress and corrosion state at the same time, in addition to the above deficiencies, the existing corrosion monitoring system also needs to fully consider the synchronous acquisition and monitoring of structural stress. It is necessary to fully consider the coordination of stress and electrochemical monitoring devices, which leads to monitoring. The difficulty of system design is further enhanced

It can be seen that the current on-site / laboratory real-time corrosion monitoring technology for industrial systems still has limitations and deficiencies in real-time and sub-regional online monitoring of multi-corrosion parameters of metal materials for stress and corrosion states. Therefore, research and design a multi-channel It is very necessary to have a corrosion monitoring system that can switch functions and be able to monitor metal multi-corrosion parameters online in real time and in different regions

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