Manufacturing method of electrode system of electrochemical testing system

Abstract

The invention provides a manufacturing method of an electrode system of an electrochemical testing system. The manufacturing method is used for performing electrochemical testing on a sample. The electrode system comprises a working electrode, a reference electrode and a counter electrode. The manufacturing method of the working electrode comprises the following steps: welding a sample at one end of an electrode stem; putting the electrode stem and the sample into the sleeve for the working electrode, and enabling the sample to be positioned at one end of the sleeve for the working electrode; sealing one end, where the sample is located, of the sleeve for the working electrode with high-temperature cement; sealing one end, where the sample is not located, of the sleeve for the working electrode by using a sealant, and enabling the electrode stem to penetrate through the sealant; and after the sleeve for the working electrode is sealed by high-temperature cement and sealant, placing the working electrode in an environment of 10-40 DEG C for 8-12 hours, and then placing the working electrode in an environment of 150-300 DEG C for 2-5 hours to obtain the packaged working electrode.

Description

technical field [0001] The present application relates to an electrochemical test device, in particular to a method for manufacturing an electrode system of an electrochemical test system. Background technique [0002] In the marine environment, the thermal corrosion of the hot-end parts of the aero-engine is one of the main causes of engine failure. Therefore, it is of great significance to study the thermal corrosion of the high-temperature hot-end parts of the aero-engine. Aeroengine hot end parts are mainly made of superalloys and high-temperature coatings, and their corrosion resistance is closely related to the electrochemical properties of their surface oxide layers. By measuring the Mott-Schottky (Mott-Schottky) curve to obtain the variation law of the capacitance of the oxide layer with the potential, the defect type and density of the oxide layer can be analyzed, and then the energy band structure and semiconductor properties of the oxide layer can be obtained. Th...

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Problems solved by technology

There are many problems in the electrode made in this way, such as the high temperature oxidation of the contact point will lead to inaccurate measurement results, and the insufficient adhesion of high temperature cement to the sample and the electrode sleeve will cause the sample to loosen

In addition, the sample will be corroded by solid salt during the heating process of the molten salt, which will affect the subsequent molten salt corrosion performance test. In order to solve this problem, the working electrode needs to be inserted directly into the molten salt from room temperature, and the corundum sleeve commonly used for the electrode It is easy to burst and cause danger during rapid cooling and rapid heating

[0005] The electrode rod of the traditional high-temperature reference electrode is silver, the manufacturing process is complicated and the stability becomes poor after repeated use

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