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In-situ observation device for corrosion morphology of stray current

A stray current and experimental device technology, applied in the direction of measuring device, weather resistance/light resistance/corrosion resistance, instruments, etc., can solve the problems of not considering special requirements, inconvenient disassembly and assembly, etc., to achieve easy observation, easy use and cleaning. , improve the experimental efficiency and the effect of

Active Publication Date: 2018-12-11
CHINA UNIV OF PETROLEUM (EAST CHINA)
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AI Technical Summary

Problems solved by technology

The in-situ observation experimental device for electrochemical corrosion measurement does not consider the special requirement of applying stray current when conducting stray current corrosion experiments, and although it can be observed in situ in real time, it is not easy to disassemble and assemble

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  • In-situ observation device for corrosion morphology of stray current

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Embodiment Construction

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0020] The purpose of the present invention is to provide an experimental device for in-situ observation of stray current corrosion morphology to solve the above-mentioned problems in the prior art, so that the device can ensure the uniformity of the stray electric field and can be easily disassembled and cleaned.

[0021] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be furt...

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Abstract

The invention discloses an in-situ observation device for corrosion morphology of stray current. The in-situ observation device comprises a container, an electrode bracket, a sample fixing frame, auxiliary electrodes, a stray current interference power source and a microscope, wherein the electrode bracket is arranged in the container and can be fetched out of the container; the sample fixing frame is detachably connected with the electrode bracket; the sample fixing frame is used for fixing a metal sample; at least two auxiliary electrodes are symmetrically arranged on the electrode bracket corresponding to the metal sample; the auxiliary electrodes and the metal electrodes are respectively connected with one electrode of the stray current interference power source; the container is usedfor accommodating a transparent corrosive medium; an observing hole is formed in the electrode bracket; the microscope is arranged above the observing hole; the metal sample can be observed by an objective lens of the microscope via the observing hole. The in-situ observation device has the advantages that the change of corrosion morphology of metal surface in the stray current corrosion experiment can be observed in real time and in situ; the detachment and installation are easy; the use and cleaning are convenient; the auxiliary electrodes are symmetrically arranged corresponding to the metal sample; the influence to the experiment results due to nonuniformity of the electric field is reduced.

Description

technical field [0001] The invention relates to the technical field of experimental equipment, in particular to an experimental device for in-situ observation of stray current corrosion morphology. Background technique [0002] Stray current is an important factor causing corrosion of buried metal components. Studying the corrosion morphology evolution law of metal under the action of stray current through visualization method can reveal a lot of corrosion information, which is an important way to analyze the corrosion mechanism. [0003] When conducting stray current corrosion morphology observation experiments on metal samples, the samples need to be placed in a transparent corrosive medium, and an external interference power supply is applied to apply a certain intensity of interference current. Generally, metal samples are connected to one pole of the power supply, and the auxiliary electrode is connected to the other side of the power supply. At the same time, in order ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00G01N21/84
CPCG01N17/006G01N21/84
Inventor 崔淦张守鑫李自力刘建国杨超周嘉瑜王军郭健
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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