CN103630488A - In situ observation experiment apparatus for electrochemical corrosion measurement - Google Patents
In situ observation experiment apparatus for electrochemical corrosion measurement Download PDFInfo
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- CN103630488A CN103630488A CN201210309861.9A CN201210309861A CN103630488A CN 103630488 A CN103630488 A CN 103630488A CN 201210309861 A CN201210309861 A CN 201210309861A CN 103630488 A CN103630488 A CN 103630488A
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Abstract
The invention relates to the field of electrochemical corrosion measurements, particularly to an in situ observation experiment apparatus for an electrochemical corrosion measurement, wherein a purpose of the present invention is to solve problems that the electrochemical corrosion measurement in the prior art can not observe changes generated on the metal material surface during the experiment process and the like. According to the in situ observation experiment apparatus, a transparent corrosive liquid is filled in a container, a metal sample, an auxiliary electrode and a reference electrode are connected with an electrochemical workstation through conducting wires, and a miniature digital microscope is arranged above the metal sample. According to the present invention, the miniature digital microscope can observe the change of the metal surface in the transparent corrosive solution along with changes of the experiment time, the polarization potential and other parameters at any time so as to acquire the metal surface topography image in real time; and the electrochemical measurement result can be corresponded to the metal surface topography image to acquire sufficient information and data so as to well analyze the corrosion mechanism of the metal material.
Description
Technical field
The present invention relates to galvanic corrosion fields of measurement, be specially a kind of galvanic corrosion and measure home position observation experimental provision.
Background technology
Corrosion is one of citation form of material failure, and China accounts for 5% of gross national product (GNP) because of the loss that corrosion causes every year, and galvanic corrosion is one of fundamental type of corrosion.The galvanic corrosion behavior of research material in different medium, all significant for research corrosion mechanism, guard technology, material selection, alloy designs etc.
Electrochemical measurement, as the Main Means of research galvanic corrosion, can obtain material corrosion dynamics data, for inferring that material corrosion mechanism provides important evidence.But Electrochemical Measurement Technology still has its limitation, for example, cannot obtain the original position information of material surface erosion profile.
In research, during metallic material corrosion, carry out the measurements such as activation polarization, electrochemical impedance spectroscopy, common measurement is all to carry out in " camera bellows ", can not Real Time Observation experimentation in the variation that occurs of metal material surface.
Summary of the invention
The object of the present invention is to provide a kind of galvanic corrosion to measure home position observation experimental provision, solve galvanic corrosion in prior art measure exist cannot observation experiment process in the problems such as variation that occur of metal material surface.
Technical scheme of the present invention is:
A home position observation experimental provision is measured in galvanic corrosion, and this experimental provision is provided with metal sample, transparent corrosive liquids, container, Miniature digital microscope, electrochemical workstation, auxiliary electrode, contrast electrode, and concrete structure is as follows:
Transparent corrosive liquids is housed in container, and metal sample, auxiliary electrode, contrast electrode connect electrochemical workstation by wire, and the top of metal sample arranges Miniature digital microscope.
Home position observation experimental provision is measured in described galvanic corrosion, and the microscopical one end of Miniature digital extends in the transparent corrosive liquids under corrosive liquid dignity, corresponding with metal sample.
Home position observation experimental provision is measured in described galvanic corrosion, and Miniature digital microscope partly has anti-liquid cover at insertion solution.
Home position observation experimental provision is measured in described galvanic corrosion, and anti-liquid cover is observed end dismountable goggles is housed.
Home position observation experimental provision is measured in described galvanic corrosion, and the output terminal of electrochemical workstation connects computing machine, and the electrochemical measurements that electrochemical workstation obtains, is input in computing machine.
Home position observation experimental provision is measured in described galvanic corrosion, and the microscopical output terminal of Miniature digital connects computing machine, and Miniature digital microscope directly obtains metal surface feature image, is input in computing machine.
Home position observation experimental provision is measured in described galvanic corrosion, and computing machine is mapped electrochemical measurements and metal surface feature image, as data and the data of the corrosion mechanism of analysis of metallic materials.
The invention has the beneficial effects as follows:
1, home position observation experimental provision is measured in galvanic corrosion of the present invention, is exactly the observation changing for electrochemical measurement process metal surface.
2, home position observation experimental provision is measured in galvanic corrosion of the present invention, by Miniature digital microscope, observe at any time the variation that metal surface produces with experimental period, the isoparametric variation of polarized potential in transparent etchant solution, Real-time Obtaining metal surface feature image.
3, the present invention can be mapped electrochemical measurements and metal surface feature image, obtains more sufficient data and data, so that the corrosion mechanism of analysis of metallic materials better.
4, Miniature digital microscope of the present invention partly has anti-liquid cover at insertion solution, and anti-liquid cover is observed end dismountable goggles is housed, and is more convenient for like this changing and scouring.
Accompanying drawing explanation
Fig. 1 is the structural representation that home position observation experimental provision is measured in galvanic corrosion of the present invention.
In figure, 1, metal sample; 2, transparent corrosive liquids; 3, container; 4, Miniature digital microscope (300 times); 5, corrosive liquid dignity; 6, computing machine; 7, electrochemical workstation; 8, auxiliary electrode; 9, contrast electrode.
Embodiment
As shown in Figure 1, galvanic corrosion of the present invention is measured home position observation experimental provision and is mainly comprised: metal sample 1, transparent corrosive liquids 2, container 3, Miniature digital microscope (300 times) 4, corrosive liquid dignity 5, computing machine 6, electrochemical workstation 7, auxiliary electrode 8, contrast electrode 9 etc., and concrete structure is as follows:
Transparent corrosive liquids 2 is housed in container 3, metal sample 1, computing machine 6, auxiliary electrode 8, contrast electrode 9 connect electrochemical workstation 7 by wire, the top of metal sample 1 arranges Miniature digital microscope (300 times) 4, one end of Miniature digital microscope 4 extends in the transparent corrosive liquids 2 under corrosive liquid dignity 5, corresponding with metal sample 1, the output terminal of Miniature digital microscope 4 connects computing machine 6, and the output terminal of electrochemical workstation 7 connects computing machine 6.
In the present invention, Miniature digital microscope partly has anti-liquid cover at insertion solution, and anti-liquid cover is observed end dismountable goggles is housed, and is more convenient for like this changing and scouring.
In the present invention, electrochemical workstation 7 is as electrochemical measurement system, adopt three-electrode system respectively: working electrode (metal sample 1), auxiliary electrode 8 and contrast electrode 9, its principle of work is: working electrode (metal sample 1) is the electrode that will investigate, auxiliary electrode 8 is in order to form current return with working electrode, because the electrode potential of contrast electrode 9 is constant under certain condition, as long as so measure the potential difference (PD) between working electrode and contrast electrode 9, also just know the electrode potential of working electrode.Electric current between working electrode and auxiliary electrode can be measured on the other hand, so just can make the volt-ampere curve of describing working electrode character.
During work, transparent corrosive liquids 2 is poured in container 3, the signal of working electrode (metal sample 1), auxiliary electrode 8 and contrast electrode 9 is input in computing machine 6 by electrochemical workstation 7;
Further, by Miniature digital microscope 4, observe at any time the variation that metal surface produces with experimental period, the isoparametric variation of polarized potential in transparent corrosive solution, also directly obtain metal surface feature image in real time, be input in computing machine 6.
Further, computing machine 6 is mapped electrochemical measurements and metal surface feature image, obtains more sufficient data and data, so that the corrosion mechanism of analysis of metallic materials better.
Result shows, apparatus of the present invention can be carried out optical observation in electro-chemical test, by means of different Real-Time Monitoring material electrochemical corrosion characteristics, and easy for installation, simple in structure, for the Electrochemical Corrosion Mechanism of research material, the galvanic corrosion behavior of monitoring material has valuable help.
Claims (7)
1. a home position observation experimental provision is measured in galvanic corrosion, it is characterized in that, this experimental provision is provided with metal sample, transparent corrosive liquids, container, Miniature digital microscope, electrochemical workstation, auxiliary electrode, contrast electrode, and concrete structure is as follows:
Transparent corrosive liquids is housed in container, and metal sample, auxiliary electrode, contrast electrode connect electrochemical workstation by wire, and the top of metal sample arranges Miniature digital microscope.
2. according to galvanic corrosion claimed in claim 1, measure home position observation experimental provision, it is characterized in that, the microscopical one end of Miniature digital extends in the transparent corrosive liquids under corrosive liquid dignity, corresponding with metal sample.
3. according to galvanic corrosion claimed in claim 2, measure home position observation experimental provision, it is characterized in that, Miniature digital microscope partly has anti-liquid cover at insertion solution.
4. according to galvanic corrosion claimed in claim 3, measure home position observation experimental provision, it is characterized in that, anti-liquid cover is observed end dismountable goggles is housed.
5. according to galvanic corrosion claimed in claim 1, measure home position observation experimental provision, it is characterized in that, the output terminal of electrochemical workstation connects computing machine, and the electrochemical measurements that electrochemical workstation obtains, is input in computing machine.
6. according to galvanic corrosion claimed in claim 1, measure home position observation experimental provision, it is characterized in that, the microscopical output terminal of Miniature digital connects computing machine, and Miniature digital microscope directly obtains metal surface feature image, is input in computing machine.
7. according to galvanic corrosion described in claim 5 or 6, measure home position observation experimental provision, it is characterized in that, computing machine is mapped electrochemical measurements and metal surface feature image, as data and the data of the corrosion mechanism of analysis of metallic materials.
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| CN201210309861.9A CN103630488A (en) | 2012-08-28 | 2012-08-28 | In situ observation experiment apparatus for electrochemical corrosion measurement |
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Cited By (18)
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| CN104131330A (en) * | 2014-08-04 | 2014-11-05 | 中国科学技术大学 | Needle electrode and preparation method thereof |
| CN105092461A (en) * | 2015-09-14 | 2015-11-25 | 北京科技大学 | Metal corrosion high-throughput characterization experimental apparatus based on image |
| CN105784579A (en) * | 2016-04-08 | 2016-07-20 | 四川理工学院 | System and method for simulating dinosaur-fossil acid rain corrosion process |
| CN107228823A (en) * | 2017-06-19 | 2017-10-03 | 中国船舶重工集团公司第七二五研究所 | A kind of aluminium alloy local corrosion evaluating apparatus |
| CN108982344A (en) * | 2018-08-07 | 2018-12-11 | 中国石油大学(华东) | Electrochemical corrosion development process original position micro-image scanning collection platform and method |
| CN108982343A (en) * | 2018-08-07 | 2018-12-11 | 中国石油大学(华东) | A kind of stray current corrosion pattern home position observation experimental provision |
| CN110044806A (en) * | 2019-05-13 | 2019-07-23 | 中国民航大学 | Image, sound emission, electrochemistry integrated stress corrosion cracking in-situ testing device |
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| CN112082994A (en) * | 2020-09-09 | 2020-12-15 | 中国工程物理研究院材料研究所 | Method for characterizing growth speed of metal punctiform hydride |
| CN112114169A (en) * | 2020-08-26 | 2020-12-22 | 哈尔滨工业大学 | Double-electrolytic-cell device for micro-area electrochemical test and using method thereof |
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| CN113376088A (en) * | 2021-07-13 | 2021-09-10 | 中山大学 | Submarine pipeline full immersion accelerated corrosion simulation experiment equipment and method |
| CN113406132A (en) * | 2021-06-11 | 2021-09-17 | 太原科技大学 | In-situ observation method for morphology of non-metallic inclusions in ultra-pure non-oriented cold-rolled silicon steel |
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