CN209911279U - Testing device capable of accurately measuring electrochemical performance of metal plate - Google Patents
Testing device capable of accurately measuring electrochemical performance of metal plate Download PDFInfo
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- CN209911279U CN209911279U CN201920371806.XU CN201920371806U CN209911279U CN 209911279 U CN209911279 U CN 209911279U CN 201920371806 U CN201920371806 U CN 201920371806U CN 209911279 U CN209911279 U CN 209911279U
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- test piece
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- metal plate
- closing cap
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Abstract
The utility model belongs to the technical field of the electrochemical performance test, a can accurately record testing arrangement of sheet metal electrochemical performance is disclosed, including the test container, be equipped with platinum electrode and calomel electrode in the container, the window that supplies sheet metal test piece and solution contact is seted up to the container side, the sheet metal test piece installation department that the window extends along having the perpendicular to container wall outward, the interior week of installation department has the interval with the outer edge of window oral area, installation department periphery or interior week are equipped with the screw thread, testing arrangement is still including the closing cap that is used for sealing the window, be equipped with on the closing cap with the installation department the closing cap screw thread of screw thread adaptation, the closing cap can be directly close with the screw thread of installation department soon, the closing cap inboard has the face that compresses tightly that can provide installation pressure for the test piece, be equipped with the through hole on the closing cap and supply a. The testing device has a simple structure and few component parts, the stable installation of the test piece is realized by screwing the installation part and the seal cover through self threads, and the accuracy of the test result can be ensured.
Description
Technical Field
The utility model relates to an electrochemistry capability test technical field specifically, relates to a can accurately record testing arrangement of sheet metal electrochemistry capability.
Background
Metals and their alloy materials inevitably produce various electrochemical phenomena, such as electrochemical corrosion, during daily use. To better study the corrosion of these materials and to extend their service life, we need to study their electrochemical properties. However, in the electrochemical performance research, various appearance conditions affect the accuracy of the test, and for example, small changes in the concentration polarization impedance of the test solution may affect the final test result. Generally, concentration polarization in electrochemical tests is caused by the fact that when a platinum electrode is electrified during testing, the potential changes, so that the ion concentration around the platinum sheet interface layer is different from the solution concentration, and the electrode potential deviates from the equilibrium potential.
Some of the currently known electrochemical testing devices can ensure the accuracy of the test result to a certain extent, but the equipment has a complicated structure, high cost and complex operation, for example, the standard number is ASTM G150-13. Some devices are simpler, but the sample is more complicated to load and unload or is more prone to the phenomenon of holding the sample without a good seal, such as the device of ASTM G5-14.
In addition, the electrochemical testing device in the prior art can adopt a plurality of connecting pieces such as bolts or screws to fasten the test piece when the test piece is installed, so that the connecting pieces are easy to lose, if the connecting pieces are lost in the testing process, the testing progress is influenced, and the connecting pieces are independent individuals, so that the installation consistency cannot be ensured during installation, and the phenomena of uneven installation or unstable installation of the test piece and the like can be caused.
Disclosure of Invention
The utility model provides a technical problem lie in overcoming prior art's defect, provide a few testing arrangement that can accurately record sheet metal electrochemical performance is constituteed to the part.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a can accurate survey test device of sheet metal electrochemical performance, including the container that is used for splendid attire test solution, be equipped with platinum electrode and calomel electrode in the container, the window that supplies sheet metal test piece and solution contact is seted up to the container side, the outer edge of window has the sheet metal test piece installation department that the perpendicular to container wall extends, the installation department is interior to have the interval with the outer edge of window oral area, installation department periphery or interior week are equipped with the screw thread, test device is still including the closing cap that is used for sealing the window, be equipped with on the closing cap with the closing cap screw thread of installation department upper thread adaptation, the closing cap can be directly close with the screw thread of installation department soon, the closing cap inboard has the face that compresses tightly that can provide installation pressure for the test piece, be equipped with the through hole on the closing cap.
Further, the setting height of the window is the same as that of the platinum electrode.
Further, install negative pole copper shell fragment on the inboard holding surface of closing cap, negative pole copper shell fragment has the laminating portion of middle hunch portion and both ends, and middle hunch portion is towards the sheet metal test piece, and laminating portion and closing cap laminating.
Furthermore, a groove for placing the sealing ring is arranged on the opening part of the window or the plane between the outer edge of the window and the mounting part.
And furthermore, an organic glass plate is arranged between the window and the metal plate test piece, the organic glass plate is provided with an inner hole with the diameter smaller than the periphery of the metal plate test piece, and the outer edge plane of the window, the organic glass plate and the metal plate test piece are sequentially arranged.
Still further, the organic glass board is equipped with the mounting groove that is used for installing the sealing washer towards the surface of sheet metal test piece, and the sheet metal test piece can cover the mounting groove.
Compared with the prior art, the utility model discloses following beneficial effect has:
1) the testing device has simple structure, low cost and few components, the stable installation of the test piece can be realized by screwing the threads of the installation part and the seal cover, and the threads on the test piece are mutually matched, so the test piece can be quickly and smoothly screwed, the clamping stagnation can not occur, and meanwhile, the in-place installation of the metal plate test piece can be ensured;
2) the window is arranged on the side surface of the container, so that compared with the conventional testing device in which the test piece is arranged at the bottom of the container, the height difference between the metal plate test piece and the platinum electrode can be greatly reduced, and the influence of concentration polarization impedance on the test during the electrochemical test can be reduced;
3) the testing device can flexibly test various small metal plate test pieces, particularly after the organic glass plate is introduced, the testing device is also suitable for the metal plate test piece with the area smaller than that of the window, and the metal plate test piece is very easy and quick to mount and dismount;
4) the testing device further arranges the window and the platinum electrode at the same height, so that the influence of concentration polarization impedance and the electrical conductivity of the metal plate test piece on the operation process can be effectively avoided, and the testing result is more accurate and reliable;
5) the metal plate test piece does not need to be sealed and can be directly installed at a window for testing.
Drawings
FIG. 1 is a schematic view of the overall structure of a test apparatus according to embodiment 1;
FIG. 2 is an enlarged, partially exploded view of section I of FIG. 1;
FIG. 3 is an enlarged, partially exploded view of the structure at the window of the test apparatus described in example 2;
fig. 4 is an enlarged partial exploded view of the structure at the window of the test apparatus described in example 3.
Detailed Description
The invention will be further described with reference to specific embodiments, wherein the drawings are designed solely for the purpose of illustration and not as a definition of the limits of the patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
As shown in fig. 1-2, a testing device capable of accurately measuring the electrochemical performance of a metal plate is provided, which comprises a container 1 for containing a solution for testing, a platinum electrode 2 and a calomel electrode 3 are arranged in the container, a window 11 for contacting a metal plate test piece a with the solution is arranged on the side surface of the container 1, a metal plate test piece mounting part 12 extending perpendicular to the container wall is arranged on the outer edge of the window 11, a distance is formed between the inner circumference of the mounting part 12 and the outer edge of the window opening, the plane of the distance can provide a supporting surface for mounting the metal plate test piece a, threads 121 are arranged on the outer circumference of the mounting part 12, a sealing cover 4 for sealing the window 11 is further provided, a pressing surface for providing mounting pressure for the test piece is arranged on the inner side of the sealing cover, a sealing cover thread 41 matched with the threads 121 on the mounting part is arranged on the sealing cover 4, the sealing, the structure of the sealing cover 4 is similar to a 3 shape, and a through hole is formed in the sealing cover 4 for inserting a conductive copper rod 5 so as to lead out an electric signal of the metal plate test piece A to the electrochemical workstation 6.
The root of the window 11 is generally curved 111 to facilitate the flow of solution to the mouth of the window, where the solution is more concentrated.
Specifically, when the platinum electrode 2 is powered on, if the height difference between the platinum electrode and the metal plate test piece is large, the time for the electrons at the upper part and the time for the electrons at the lower part of the platinum electrode plate to reach the test piece are not synchronous, so that concentration polarization is generated, and the test result is influenced.
Because this testing arrangement is mainly to little miniature sheet metal test piece in, it probably because individual head is little, can't install in window department with laminating very much, consequently still can install a negative pole copper shell fragment on closing cap inboard clamping face, negative pole copper shell fragment has middle hunch portion 71 and laminating portion 72 at both ends, and middle hunch portion 71 is towards sheet metal test piece A, and laminating portion 72 is laminated with closing cap 4. At this time, the pressing force of the cover 4 on the metal plate test piece is applied by the middle arch part 71 of the cathode copper elastic sheet.
The conductive copper bar is contacted with the cathode copper elastic sheet.
Because the container is filled with the solution, a groove 112 for placing a sealing ring B is required to be arranged on the opening part of the window or the plane between the outer edge of the window and the mounting part, and during testing, the sealing ring is required to be filled in the groove 112 before the metal plate test piece is mounted so as to prevent the solution from flowing out and ensure the overall sealing performance of the testing device of the container.
The testing device is simple in structure, low in cost and few in component parts, the stable installation of the test piece can be realized by screwing the installation part and the self thread of the seal cover, the stable installation of the test piece can be realized by the mutual adaptation of the threads, the stable installation can be realized quickly and smoothly, clamping stagnation can not occur, the metal plate test piece can be ensured to be installed in place, and the installation and the disassembly of the metal plate test piece are very easy and rapid.
Example 2
As shown in fig. 3, the present embodiment is different from embodiment 1 in that: the threads 121 on the mounting portion are disposed on the inner periphery when the closure is like a thermos stopper. A cover thread 41 is provided on the outer periphery thereof.
Example 3
As shown in fig. 4, the present embodiment further enhances the versatility of the testing device, and on the basis of embodiment 1, an organic glass plate 8 is disposed between the window 11 and the metal plate test piece a, the organic glass plate 8 has an inner hole with a diameter smaller than the periphery of the metal plate test piece a, and the window outer edge plane, the organic glass plate 8 and the metal plate test piece a are sequentially arranged.
Because of having added the organic glass board, the plane laminating degree between its and the metal test piece is not necessarily very good, for ensureing testing arrangement's whole leakproofness again this moment, organic glass board 8 is equipped with the mounting groove 81 that is used for installing sealing washer B towards the sheet metal test piece on the surface, and the sheet metal test piece can cover the mounting groove, before the sheet metal test piece installation, need be with this department sealing washer installation in place earlier.
It should be understood that the above-mentioned embodiments are only examples for clearly illustrating the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (6)
1. The utility model provides a can accurate survey test device of sheet metal electrochemical performance, including the container that is used for splendid attire test solution, be equipped with platinum electrode in the container, a serial communication port, the window that supplies sheet metal test piece and solution contact is seted up to the container side, the outer edge of window has the sheet metal test piece installation department that the perpendicular to container wall extends, the installation department is interior to have the interval with the outer edge of window oral area, installation department periphery or interior week are equipped with the screw thread, test device is still including the closing cap that is used for sealing the window, be equipped with on the closing cap with the closing cap screw thread of installation department upper thread adaptation, the closing cap can be directly close with the screw thread of installation department soon, the closing cap inboard has the face that compresses tightly that can provide installation pressure for the test piece, be equipped with the through hole on the closing.
2. The test device for accurately measuring the electrochemical performance of the metal plate as claimed in claim 1, wherein the window is provided at the same height as the platinum electrode.
3. The test device capable of accurately measuring the electrochemical performance of the metal plate as claimed in claim 1 or 2, wherein the cathode copper spring plate is mounted on the pressing surface on the inner side of the sealing cover, the cathode copper spring plate is provided with a middle arch part and joint parts at two ends, the middle arch part faces the metal plate test piece, and the joint parts are jointed with the sealing cover.
4. The test device for accurately measuring the electrochemical performance of the metal plate as claimed in claim 3, wherein a groove for placing the sealing ring is formed on the window opening or the plane between the outer edge of the window and the mounting portion.
5. The device for accurately testing the electrochemical performance of the metal plate as claimed in claim 4, wherein an organic glass plate is further arranged between the window and the metal plate test piece, the organic glass plate has an inner hole with a diameter smaller than the periphery of the metal plate test piece, and the outer edge plane of the window, the organic glass plate and the metal plate test piece are sequentially arranged.
6. The device as claimed in claim 5, wherein the surface of the organic glass plate facing the metal plate test piece is provided with a mounting groove for mounting the sealing ring, and the metal plate test piece can cover the mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920371806.XU CN209911279U (en) | 2019-03-22 | 2019-03-22 | Testing device capable of accurately measuring electrochemical performance of metal plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920371806.XU CN209911279U (en) | 2019-03-22 | 2019-03-22 | Testing device capable of accurately measuring electrochemical performance of metal plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209911279U true CN209911279U (en) | 2020-01-07 |
Family
ID=69033171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920371806.XU Expired - Fee Related CN209911279U (en) | 2019-03-22 | 2019-03-22 | Testing device capable of accurately measuring electrochemical performance of metal plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209911279U (en) |
-
2019
- 2019-03-22 CN CN201920371806.XU patent/CN209911279U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200107 |
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| CF01 | Termination of patent right due to non-payment of annual fee |