An electrochemical corrosion test device that realizes multiple in-situ monitoring

A technology of corrosion test and test device, which is used in measurement devices, weather resistance/light resistance/corrosion resistance, scientific instruments, etc. The effect of reducing sound wave attenuation and simplifying the test setup

Inactive Publication Date: 2011-12-21
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to provide an electrochemical corrosion test device that realizes multiple in-situ monitoring, and solves the problems in the prior art that the in-situ information of the material surface corrosion morphology cannot be obtained, and it is not suitable for long-term on-line monitoring.

Method used

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  • An electrochemical corrosion test device that realizes multiple in-situ monitoring
  • An electrochemical corrosion test device that realizes multiple in-situ monitoring
  • An electrochemical corrosion test device that realizes multiple in-situ monitoring

Examples

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Embodiment

[0042] 304 stainless steel room temperature 0.05M H 2 SO 4 +0.5M Na 2 SO 4 Cathodic polarization test in solution.

[0043] The working electrode size is as image 3 As shown, the lower end of the waveguide rod is connected to the working electrode through bolts, and the upper end of the waveguide rod is connected to the acoustic emission probe. Through three lead breaking tests on the surface of the working electrode, the signal amplitudes are 91dB, 91dB, and 92dB, which proves that the sound wave conduction is good and stable. .

[0044] Put the working electrode, counter electrode and reference electrode into two electrolytic cells respectively, and the two electrolytic cells are connected by a salt bridge.

[0045] Place the long focal length microscope on the side of the electrolytic cell, adjust the position so that the optical axis is perpendicular to the surface of the working electrode, and adjust the focal length so that the focus is on the surface of the workin...

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Abstract

The invention belongs to the field of material electrochemical corrosion test monitoring, more precisely, relates to a kind of electrochemical corrosion test device for realizing multiple in-situ monitoring, and solves the in-situ in-situ monitoring of material surface corrosion morphology existing in the prior art. information, and is not suitable for issues such as long-term online monitoring. The device is mainly composed of three parts: electrochemical test device, acoustic emission test device, and optical observation system. The working electrode is connected to the waveguide rod, and forms a three-electrode system with the counter electrode and reference electrode. Electrochemical (polarization curve, impedance spectrum, etc.) tests can be performed through the electrochemical workstation; the acoustic emission probe is fixed on the waveguide rod and can be collected synchronously. The acoustic emission signal during the corrosion process of the working electrode; the long focal length microscope can observe the corrosion morphology of the surface of the working electrode in situ. The device can realize various in-situ monitoring such as electrochemistry, acoustic emission, and long-focus microscope at the same time, and realize electrochemical corrosion monitoring of materials at room temperature.

Description

technical field [0001] The invention belongs to the field of material electrochemical corrosion test monitoring, more precisely, relates to an electrochemical corrosion test device for realizing various in-situ monitoring. Background technique [0002] Corrosion is one of the basic forms of material failure. The loss caused by corrosion in my country accounts for about 5% of the gross national product every year. Electrochemical corrosion is one of the basic types of corrosion. Studying the electrochemical corrosion behavior of materials in different media is of great significance for the study of corrosion mechanism, protection technology, material selection, alloy design, etc. [0003] As the main means of studying electrochemical corrosion, electrochemical measurement can obtain material corrosion kinetic data, which provides an important basis for inferring material corrosion mechanism. However, the electrochemical testing technology still has its limitations, such as i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00G01N17/02
Inventor 徐健吴欣强韩恩厚王翔
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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