CN109827898B

Movatterモバイル変換

Info

Publication number: CN109827898B
Application number: CN201910246766.0A
Authority: CN
Inventors: 张欣; 邵佳; 王泽华; 汪米琪; 周泽华; 易于
Original assignee: Hohai University HHU
Current assignee: Hohai University HHU
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2021-09-17
Anticipated expiration: 2039-03-29
Also published as: CN109827898A

Abstract

本发明公开了电化学技术领域的一种金属腐蚀试验装置，旨在解决电极在磁场中的位置固定问题。一种金属腐蚀试验装置，包括置于试验磁场中的反应池，所述反应池内注有腐蚀液，所述腐蚀液内浸没有第一固定平台和第二固定平台，所述第一固定平台上设有由待腐蚀金属材料制成的工作电极，所述第二固定平台上设有辅助电极；所述第一固定平台和第二固定平台能够相对反应池发生位移，以调整工作电极、辅助电极在试验磁场中的位置。本发明能够使电极在磁场中的位置相对固定，并保证工作电极、辅助电极和磁场方向均为平行，能够在不改变外加磁场性质的同时通过调整电极在反应池内的位置使电极处于不同的磁场强度下。

The invention discloses a metal corrosion test device in the field of electrochemical technology, aiming at solving the problem of fixing the position of an electrode in a magnetic field. A metal corrosion test device, comprising a reaction pool placed in a test magnetic field, the reaction pool is filled with a corrosive solution, the first fixed platform and the second fixed platform are not immersed in the corrosive solution, and the first fixed platform is There is a working electrode made of a metal material to be corroded, and an auxiliary electrode is arranged on the second fixed platform; the first fixed platform and the second fixed platform can be displaced relative to the reaction cell to adjust the working electrode and the auxiliary electrode. position in the test magnetic field. The invention can make the position of the electrode relatively fixed in the magnetic field, and ensure that the working electrode, the auxiliary electrode and the magnetic field are all parallel, and can adjust the position of the electrode in the reaction cell to make the electrode in different magnetic fields without changing the properties of the external magnetic field. under strength.

Description

Metal corrosion test device

Technical Field

The invention belongs to the technical field of electrochemistry, and particularly relates to a metal corrosion test device.

Background

With the rapid development of science and technology in China, the interference of electromagnetic waves generated by airports, high-voltage substations and other special areas to communication and networks is more serious, and the electromagnetic waves generated by a large number of communication cables can also influence the surrounding environment. The corrosion behavior of metal is complex, the addition of electromagnetic field can change the ion motion and substance exchange rule when the metal member is corroded, and simultaneously, the alternating magnetic effect and the magnetic memory effect can be generated, so that the corrosion process becomes more complex. The role of the magnetic field in the metal corrosion process still has many unsolved scientific problems, so researchers are required to continuously explore the mass transfer characteristics and the action rules between metal and a corrosion medium in the magnetic field environment.

Corrosion testing is an important approach to study the corrosion behavior of metals. The metal electrodes are different in positions in the magnetic field, and are different in the degree of influence of the magnetic field; the relationship between the magnetic field direction and the motion direction of the charged particles is the main factor for determining the driving force of the magnetic fluid, so that a stable and uniform magnetic field is obtained firstly to research the action mechanism of the magnetic field environment on the corrosion behavior of the metal material.

At present, a magnetic field is usually obtained by an electromagnet or a permanent magnet in a laboratory, an alternating magnetic field and a unidirectional magnetic field can be obtained by the electromagnet, but only the unidirectional magnetic field can be obtained by the permanent magnet. How to keep the ideal position relationship between the metal electrode and the test magnetic field in the metal corrosion test process is the premise of obtaining the reliable result of the metal corrosion test.

Disclosure of Invention

The invention aims to provide a metal corrosion test device, which aims to solve the technical problem that the relative position relation of a metal electrode and a magnetic field is inconvenient to adjust so that the metal corrosion test result is unreliable in the prior art.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a metal corrosion test device comprises areaction tank 1 arranged in a test magnetic field, wherein corrosive liquid is injected into thereaction tank 1, a firstfixed platform 3 and a second fixedplatform 4 are immersed in the corrosive liquid, a workingelectrode 9 made of a metal material to be corroded is arranged on the firstfixed platform 3, and anauxiliary electrode 12 is arranged on the secondfixed platform 4; the firstfixed platform 3 and the secondfixed platform 4 can displace relative to thereaction tank 1 so as to adjust the positions of the workingelectrode 9 and theauxiliary electrode 12 in the test magnetic field.

And thefirst fixing platform 3 and/or thesecond fixing platform 4 are provided withelectrode fixing buckles 8.

And the firstfixed platform 3 and/or the secondfixed platform 4 are provided with ateslameter 10 for detecting the strength of the test magnetic field and a through hole for enabling a probe of theteslameter 10 and a lead to pass through.

Thereaction tank 1 is an open reaction tank, and anopenable tank cover 2 covers the open position.

And awiring groove 7 is formed in thepool cover 2.

The firstfixed platform 3 is connected with thepool cover 2 in a sliding way through a first sliding part, and the first sliding part comprises: a first sliding upright fixed on the upper part of the firstfixed platform 3 and afirst chute 6 fixed on the lower surface of thepool cover 2;first spout 6 is "C" shape groove, first slip stand has "T" type head, "T" type head is arranged in "C" shape groove and is had "C" shape groove clearance fit, realizes first slip stand and 6 sliding connection of first spout.

The second fixedplatform 4 is connected with the bottom surface of thereaction tank 1 in a sliding manner through a second sliding part, and the second sliding part comprises: the second sliding upright column is fixed at the lower part of the firstfixed platform 3, and the secondsliding chute 5 is arranged on the bottom surface of thereaction tank 1, and the second sliding upright column is connected with the secondsliding chute 5 in a sliding manner.

Thereaction tank 1, thetank cover 2, thefirst fixing platform 3 and thesecond fixing platform 4 are made of quartz glass.

The workingelectrode 9 and theauxiliary electrode 12 are both parallel to the direction of the test magnetic field.

Thereference electrode 11 is further included, and thereference electrode 11 is positioned on one side of the firstfixed platform 3 and the secondfixed platform 4 in thereaction cell 1.

Compared with the prior art, the invention has the following beneficial effects:

(1) the fixed platform is adopted to fix the electrodes, so that the positions of the electrodes in the magnetic field can be relatively fixed, and the working electrodes, the auxiliary electrodes and the magnetic field are all parallel;

(2) the fixed platform can generate relative displacement relative to the reaction tank, and the position of the electrode in the reaction tank can be adjusted to enable the electrode to be under different magnetic field strengths without changing the property of an external magnetic field.

Drawings

FIG. 1 is a schematic view of a metal corrosion testing apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of a reaction tank and a second fixed platform of a metal corrosion testing apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic view of a tank cover and a first fixing platform of a metal corrosion testing apparatus according to an embodiment of the present invention;

FIG. 4 is a schematic side view of a tank cover and a first fixing platform of a metal corrosion testing apparatus according to an embodiment of the present invention;

in the figure: 1. a reaction tank; 2. a pool cover; 3. a first fixed platform; 4. a second stationary platform; 5. a second chute; 6. a first chute; 7. a wiring groove; 8. buckling; 9. a working electrode; 10. a tesla meter; 11. a reference electrode; 12. and an auxiliary electrode.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

It should be noted that in the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention but do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. As used in the description of the present invention, the terms "front," "back," "left," "right," "up," "down" and "in" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1, 3 and 4, the metal corrosion test device comprises areaction tank 1 arranged in a test magnetic field, wherein a corrosion liquid is injected into thereaction tank 1, and a firstfixed platform 3 and a secondfixed platform 4 are immersed in the corrosion liquid. A workingelectrode 9 made of a metal material to be corroded is fixed on thefirst fixing platform 3 through abuckle 8 arranged on the lower surface of thefirst fixing platform 3. A through hole for a lead of the workingelectrode 9 to pass through is formed in thefirst fixing platform 3, so that power is supplied to the workingelectrode 9 and the workingelectrode 9 is measured; thefirst fixing platform 3 is also provided with a through hole for the probe of theteslameter 10 to pass through, the probe of theteslameter 10 passes through the through hole and is fixed by abuckle 8 which is arranged on one side of the through hole on the lower surface of thefirst fixing platform 3, so that the magnetic field intensity near the workingelectrode 9 can be measured conveniently. Thebuckle 8 can be made of soft rubber, and the workingelectrode 9 and theteslameter 10 are arranged between the twobuckles 8 made of soft rubber and are fixed in position through extrusion force.

First fixedplatform 3 passes through first slider and the sliding connection ofpond lid 2, and first slider includes: four first sliding columns fixed on the upper part of thefirst fixing platform 3 and two first slidingchutes 6 fixed on the lower surface of thepool cover 2, wherein the top of each first sliding column is provided with a T-shaped head, each firstsliding chute 6 is a C-shaped groove, and the T-shaped heads are arranged in the C-shaped grooves and in clearance fit with the C-shaped grooves, so that thefirst fixing platform 3 can freely slide along the firstsliding chutes 6.

As shown in fig. 1 and 2, theauxiliary electrode 12 is fixed on thesecond fixing platform 4 by abuckle 8 disposed on the upper surface of thesecond fixing platform 4, thesecond fixing platform 4 is slidably connected to the bottom surface of thereaction cell 1 by a second sliding member, and the second sliding member includes: four second sliding columns fixed on the lower part of thefirst fixing platform 3 and two second slidingchutes 5 arranged on the bottom surface of thereaction tank 1 enable thesecond fixing platform 4 to freely slide along the second slidingchutes 5.

As shown in FIG. 1, areference electrode 11 is further disposed in thereaction cell 1, and thereference electrode 11 is located at one side of the firstfixed platform 3 and the secondfixed platform 4 in thereaction cell 1. As shown in FIGS. 1 and 2, awiring groove 7 is provided in thecell cover 2, and wires of the workingelectrode 9, theauxiliary electrode 12, thereference electrode 11 and theteslameter 10 are passed through thewiring groove 7 and connected to an external test device.

Thereaction tank 1, thetank cover 2, thefirst fixing platform 3 and thesecond fixing platform 4 are made of quartz glass, and the quartz glass does not participate in chemical reaction in a corrosion test and does not interfere with a test result.

The workingelectrode 9 and theauxiliary electrode 12 are both parallel to the direction of the test magnetic field. The relationship between the magnetic field direction and the motion direction of the charged particles is a main factor for determining the driving force of the magnetic fluid, and when the magnetic field direction is vertical to the motion direction of the charged particles, namely the magnetic field direction is parallel to the corroded surface of the sample, the effect of the driving force of the magnetic fluid on liquid-phase convection mass transfer is the greatest.

During testing, the workingelectrode 9 and theteslameter 10 connected with the leads are fixed at corresponding positions on thefirst fixing platform 3, theauxiliary electrode 12 connected with the leads is fixed on thesecond fixing platform 4, thesecond fixing platform 4 is arranged at a preset position, and all the leads pass through thewiring groove 7 on thepool cover 2; then slowly adding corrosive liquid into thereaction tank 1 to a required liquid level, slightly covering thereaction tank 1 with thetank cover 2, completely immersing the firstfixed platform 3 in the corrosive liquid, and slightly pushing the firstfixed platform 3 by a glass rod to enable the workingelectrode 9 to be positioned right above theauxiliary electrode 12 as much as possible. Thereference electrode 11 is placed. The position of the test magnetic field is adjusted so that the magnetic field direction is parallel to the workingelectrode 9 and theauxiliary electrode 12, respectively. The test is carried out and recorded, and then the firstfixed platform 3 and the secondfixed platform 4 are pushed by a glass rod to the required magnetic field intensity position to continue the test.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The metal corrosion test device is characterized by comprising a reaction tank (1) arranged in a test magnetic field, wherein corrosive liquid is injected into the reaction tank (1), a first fixed platform (3) and a second fixed platform (4) are immersed in the corrosive liquid, a working electrode (9) made of a metal material to be corroded is arranged on the first fixed platform (3), and an auxiliary electrode (12) is arranged on the second fixed platform (4); the first fixed platform (3) and the second fixed platform (4) can displace relative to the reaction tank (1) to adjust the positions of the working electrode (9) and the auxiliary electrode (12) in a test magnetic field; the working electrode (9) and the auxiliary electrode (12) are parallel to the direction of the test magnetic field.

2. The metal corrosion test device according to claim 1, wherein the first fixing platform (3) and/or the second fixing platform (4) is provided with a buckle (8) capable of fixing the electrode.

3. The metal corrosion test device according to claim 1, wherein the first fixed platform (3) and/or the second fixed platform (4) are provided with a teslameter (10) for detecting the strength of the test magnetic field and a through hole for passing a probe and a lead of the teslameter (10).

4. The metal corrosion test device according to claim 1, wherein the reaction tank (1) is an open reaction tank, and the open reaction tank is covered with an openable tank cover (2).

5. The metal corrosion test device according to claim 4, wherein the tank cover (2) is provided with a wiring groove (7).

6. The metal corrosion test device according to claim 4, wherein said first fixed platform (3) is slidingly connected to the tank cover (2) by means of a first slide comprising: a first sliding upright post fixed on the upper part of the first fixed platform (3) and a first chute (6) fixed on the lower surface of the pool cover (2); the first sliding chute (6) is a C-shaped groove, the first sliding upright post is provided with a T-shaped head, and the T-shaped head is arranged in the C-shaped groove and in clearance fit with the C-shaped groove to realize the sliding connection of the first sliding upright post and the first sliding chute (6).

7. The metal corrosion test device according to claim 1, wherein the second fixed platform (4) is slidably connected with the bottom surface of the reaction tank (1) through a second sliding member, and the second sliding member comprises: the second sliding upright column is fixed at the lower part of the first fixed platform (3) and the second sliding chute (5) is arranged on the bottom surface of the reaction tank (1), and the second sliding upright column is connected with the second sliding chute (5) in a sliding manner.

8. The metal corrosion test device according to claims 4 to 7, wherein the reaction tank (1), the tank cover (2), the first fixing platform (3) and the second fixing platform (4) are made of quartz glass.

9. The metal corrosion test device according to claim 1, further comprising a reference electrode (11), wherein the reference electrode (11) is positioned in the reaction cell (1) on one side of the first fixed platform (3) and the second fixed platform (4).