Scanning electrochemical microscope electrolytic cell for plate-shaped load sample corrosion research and application thereof

A technology of scanning electrochemistry and corrosion research, applied in the field of electrochemical electrolytic cells, can solve problems such as complex structures and unsuitable electrolytic cells

Inactive Publication Date: 2013-02-13
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantages of this invention patent are: (1) the involved electrolytic cell is attached with a double-layer cylinder containing the electrolyte solution, which has a relatively complicated structure; (2) the working electrode is set through a round hole, and the working surface is still columnar Cross-section (bottom surfa...

Method used

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  • Scanning electrochemical microscope electrolytic cell for plate-shaped load sample corrosion research and application thereof
  • Scanning electrochemical microscope electrolytic cell for plate-shaped load sample corrosion research and application thereof

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Embodiment 1

[0031] Such as Figure 1-2 shown.

[0032] A scanning electrochemical microscope electrolytic cell used for corrosion research of plate samples, comprising an upper structure 3 and a lower structure 1 surrounding an electrolytic cell chamber: a groove 2 is arranged in the center of the lower structure 1, and the upper structure 3 includes a rectangular frame 4, the front side wall 5 in the rectangular frame 4 is a transparent material, and the left side wall 6 and the right side wall 7 in the rectangular frame 4 are respectively provided with grooves 8 communicating with the outside world and the electrolytic cell; A gasket is provided between the upper structure 3 and the lower structure 1, and the shape of the gasket is adapted to the shape of the cross section of the upper structure 3; the upper structure 3, the gasket and the lower structure 1 are in Tight connection under the action of external force.

[0033] The fixing bolts 9 tightly connect and fix the superstructur...

Embodiment 2

[0038] A method utilizing the electrolytic cell described in embodiment 1 in conjunction with the scanning electrochemical microscope instrument to study the corrosion of 304 stainless steel specimens of plate load comprises the following steps:

[0039] (1) Prepare the 304 stainless steel sample: process the 304 stainless steel sample into a plate-shaped sample, and the gauge section size of the plate-shaped sample matches the groove size of the superstructure, for standby;

[0040](2) Install the electrolytic cell, plate sample, reference electrode and auxiliary electrode: set the two ends of the gauge section of the plate sample on the grooves on the left and right walls of the rectangular frame Inside, use fixing bolts to fix and seal the upper structure, sealing gasket and lower structure; install and fix the reference electrode and auxiliary electrode above the plate sample; the plate sample is the working electrode; The plate-shaped sample gauge section inside the elect...

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Abstract

The invention relates to a scanning electrochemical microscope electrolytic cell for plate-shaped load sample corrosion research. The electrolytic cell comprises an upper structure and a lower structure, which jointly form an electrolytic cell cavity; the center of the lower structure is provided with a groove; and the upper structure comprises a rectangular frame, the front side wall of the rectangular frame is made of transparent materials, and the left side wall and the right side wall of the rectangular frame are respectively provided with a groove which is communicated with the outside and the electrolytic cell cavity. The invention also relates to a method for corroding the plate-shaped samples by using the electrolytic cell. The structure of the plate-shaped sample transversely passing the electrolytic cell is particularly suitable for corrosion tests of metallic material samples which are stressed and loaded or have residual stress. Therefore, by the electrolytic cell and the application thereof, the plate-shaped sample is subjected to longitudinal mechanical loading by constant load loading or slow strain rate stretching, the real-time and in-situ research on the influence of metallic materials, corrosion medium and mechanical factors on corrosion characteristics and a corrosion rate of metallic materials under the synergistic action can be done, and the microcosmic mechanism on corrosion can be deeply analyzed.

Description

technical field [0001] The invention relates to a scanning electrochemical microscope electrolytic cell used for corrosion research of plate-like load samples and its application. It belongs to the technical field of electrochemical electrolytic cell. Background technique [0002] At present, the scanning electrochemical microscope (SECM) electrolytic cell, which is usually used for corrosion electrochemical research, has a structure with a transparent circular hole at the bottom, and the research sample is inserted into the hole during use. This electrolytic cell is suitable for the research surface ( That is, the working surface) is the cross-section (bottom surface) of a columnar material (such as a metal or alloy bar). The limitations of the combination of the above-mentioned research material (i.e., the matrix electrode) and the electrolytic cell are that the research material must be static during the experiment, and mechanical loading of the sample cannot be achieved...

Claims

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Application Information

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IPC IPC(8): G01Q60/60
Inventor 牛林钱兆红赵萌王玉杰韩晓平
Owner SHANDONG UNIV
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