Multifunctional same-material three-electrode probe

Abstract

The invention discloses a multifunctional same-material three-electrode probe. The multifunctional same-material three-electrode probe is characterized by comprising a probe frame, a research electrode, an auxiliary electrode, a reference electrode, first connectors, electric connection components, seal end heads and second connectors; the middle of the probe frame is provided with three stepped through holes which are formed uniformly; the research electrode, the auxiliary electrode and the reference electrode are respectively arranged at the three stepped through holes of the probe frame, and are fixedly connected to the bottom surface of the probe frame through the first connectors; the first connectors have conductivity; the electric connection components are respectively arranged in the three stepped through holes, are in contact with the first connectors, and are connected with the probe frame in a sealed mode; the seal end heads are respectively connectd with the research electrode, the auxiliary electrode and the reference electrode in a sealed mode through the second connectors; the research electrode, the auxiliary electrode and the reference electrode are all made of metal or alloys with the same material. The multifunctional same-material three-electrode probe has the advantages of convenience in electrode surface treatment, convenience and rapidity in detachment and installation, acid-base resistance, small electrode system introduction error and the like.

Description

technical field [0001] The invention relates to an electrochemical measuring device, in particular to a multifunctional three-electrode probe made of the same material. Background technique [0002] Metal structures and equipment are subject to electrochemical corrosion in certain media. Rapid and accurate detection of the corrosion rate of metals in a corrosive environment is of great significance for formulating anti-corrosion schemes and evaluating anti-corrosion effects. The linear polarization technique is an effective method for quickly measuring the corrosion rate of metals. The principle of this method is that for a corrosion system controlled by activation polarization, there is a linear relationship between the polarization potential and the applied current within the range of plus or minus 10mv of the corrosion potential, that is, the Siern-Geary equation: , is the polarization resistance, is a constant, is the corrosion current density. There is an inver...

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Problems solved by technology

[0003] The three-electrode system is the same as the general electrochemical measurement. The classic three-electrode system is composed of standard reference electrodes, working electrodes and auxiliary electrodes made of different materials. The corrosion potential value of the metal electrode relative to the reference electrode (such as saturated calomel electrode, copper / copper sulfate reference electrode, etc.) is very large, about 500-800mv, and the polarization is 10mv on this basis. In this case, the measurement and reading accuracy will be greatly affected

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