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Wire beam electrode and preparation method and application thereof

A tow electrode and electrode wire technology, applied in the field of electrochemical testing, can solve the problems of effective characterization of unfavorable electrochemical properties, easy disconnection of welding points, gaps, etc., and achieve stable and reliable electrochemical information, high success rate, and easy operation. Effect

Inactive Publication Date: 2015-03-25
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the distance between the electrode wires in this method exceeds the diameter of the electrode wire by nearly three times, which is not conducive to the effective characterization of electrochemical properties.
In the production process of the wire bundle electrode, there are many welding points between the electrode wire and the wire, and in the subsequent production process, the welding points are easy to disconnect; in addition, in the packaging process of the electrode, a large amount of epoxy resin Use, so that the epoxy resin releases a lot of heat during the solidification process, which reduces the adhesion between the metal wire and the epoxy resin, and easily creates gaps between the electrode wire and the epoxy resin.

Method used

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  • Wire beam electrode and preparation method and application thereof
  • Wire beam electrode and preparation method and application thereof
  • Wire beam electrode and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Depend on figure 1 As shown, prepare 121 Q235 steel wires with a length of 5 cm and a diameter of 0.15 cm, five 25-core rehearsal wires with a length of 40 cm, 121 insulating heat-shrinkable tubes with a length of 1 cm and a diameter of 0.2 cm, and 3 pieces with 121 holes ( 0.15cm in diameter, 0.06cm hole spacing) phenolic resin insulation board and polyethylene pipe with an inner diameter of 4cm;

[0033] Weld one end of the 121 electrode wires to one end of the rehearsal wire respectively, wrap the welded parts with a heat-shrinkable tube, and perform insulation treatment; insert the insulated electrode wires into three phenolic resin insulation boards in turn to form a 11×11 The electrode wire array, 3 plates are placed in parallel in sequence, keeping the distance of 2cm; use a multimeter to test the insulation between each electrode wire, and the conductivity between the electrode wire and the wire, to ensure that each electrode wire is insulated After the electr...

Embodiment 2

[0035] The inhomogeneous electrochemical characteristics of the wire bundle electrode produced in Example 1 in the process of localized corrosion caused by microorganisms were tested.

[0036] The electrolyte is a medium for sulfate-reducing bacteria (0.5g potassium dihydrogen phosphate, 1g ammonium chloride, 0.1g calcium chloride, 2g magnesium sulfate, 0.5g sodium sulfate, 4ml sodium lactate and 1g yeast powder dissolved in 1L seawater) . The test process of current distribution is: before the test, all the electrode wires are coupled together and soaked in the electrolyte so that electrons can flow freely between the electrode wires; when the test is in progress, a high-precision multimeter is used to test each electrode in turn wire and the remaining 120 electrode wires coupled together. Test results such as Figure 5 As shown, there is no significant anodic current peak on the surface of the electrode after soaking in sterile medium for 13 days, and the maximum anodic cu...

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Abstract

The invention discloses a method for manufacturing a wire beam electrode (also called array electrode) and belongs to the technical field of electrochemical testing. The method disclosed by the invention comprises the following steps: (a), respectively welding one ends of 121 wire electrodes with 121 wires; (b) sequentially inserting the other ends of the welded wire electrodes into three 11*11 templates which are provided with 121 holes and are regularly arranged, and combining to form a 11*11 wire electrode array; (c) testing the insulativity between every two wire electrodes and the conductivity between each wire electrode and the corresponding wire by adopting a universal meter; and (d) packaging the wire electrode array by virtue of a two-step method by adopting epoxy resin. The manufacturing method is low in cost, high in controllability and easy and convenient to operate, the electrode array is uniform and regular in arrangement, and a stable and reliable electrochemical signal can be acquired by the manufactured electrode.

Description

technical field [0001] The invention belongs to the technical field of electrochemical testing, in particular to a wire beam electrode and its preparation and application. Background technique [0002] The wire beam electrode can obtain the local electrochemical information of the electrode surface, and is a very effective tool for studying the mechanism of the localized corrosion process. It is composed of a series of tiny electrodes arranged regularly. When the experiment is carried out, all the electrode wires are coupled together through an external circuit, and electrons can flow freely between each tiny electrode, so that the electrochemical behavior of the entire electrode is similar to a single sheet electrode. . Wire beam electrodes have been widely used in various localized corrosion studies, such as crevice corrosion, waterline corrosion, pitting corrosion, oil-water interface corrosion, organic coating failure and localized corrosion caused by microorganisms. H...

Claims

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Application Information

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IPC IPC(8): G01N17/02
Inventor 陈士强张盾
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI