CN104990862B - The thin liquid film corrosion testing apparatus of thickness of liquid film can be automatically controlled - Google Patents
The thin liquid film corrosion testing apparatus of thickness of liquid film can be automatically controlled Download PDFInfo
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Abstract
The invention discloses a kind of thin liquid film corrosion testing apparatus for automatically controlling thickness of liquid film, electrolytic cell is placed on iron stand, micrometer caliper I, II and corresponding probe I and II are provided with the horizontal gird above iron stand.Reservoir is connected by magnetic valve with electrolytic cell, and liquid level is supplemented to electrolytic cell by magnetic valve.Auxiliary electrode, reference electrode and working electrode are connected with the corresponding port of electrochemical workstation respectively, form electrochemical corrosion measuring system.Universal meter is connected to micrometer caliper I and working electrode institute in the loop.Micrometer caliper II, platinum electrode connect through the connection jaws of wire and magnetic valve respectively, so that three forms loop.The present apparatus can it is automatic within the specific limits, easily and accurately control and keep thin liquid film to be in a certain thickness, and the thickness is conveniently adjusted, the electrochemical data acquisition of metal erosion under certain thickness of liquid film is realized, so as to be more conducive to research corrosion of metal mechanism under different thickness.
Description
Technical field
The present invention relates to the improvement of thin liquid film corrosion test, and in particular to a kind of thin liquid film for automatically controlling thickness of liquid film is rotten
Corrosion test device, belong to electrochemical corrosion technical field.
Background technology
Atmospheric corrosion is one of most common corrosion phenomenon of metal material, and harmfulness is very big；Thin liquid film in atmospheric corrosion
Corrode the important research direction for corrosion research.The metal surface being placed in atmospheric environment would generally form one layer of very thin water
Film, when water film thickness reaches 20-30 molecular thickness, that is, the electrolyte membrane that is formed required for electrochemical corrosion, that is, it is thin
Liquid film.Often containing water miscible aggressive electrolyte and the corrosive gas that dissolves in thin liquid film, metal erosion is produced compared with
It is big to influence；Thin liquid film thickness directly determines rate of metal corrosion simultaneously, is one of most important influence factor of atmospheric corrosion.
When metal surface liquid film is very thin, oxygen is easy to form saturated oxygen, metal surface in metal surface by liquid film
The depolarising reaction of oxygen easily occurs, turns into main cathode reaction；And metal ion or corrosion product expand under very thin liquid layer
Dissipate and blocked, anode is in passive state, and anode reaction is not easy to carry out.When liquid film is thicker, oxygen is diffused into metal surface resistance
Increase, cathode reaction are obstructed, and anode is accelerated due to metal ion and corrosion product diffusion velocity so that anode reaction increase.
Traditional thin liquid film method for measuring thickness：Changed using universal meter numerical value to determine that loop resistance changes, drive spiral shell
Rotation mircrometer gauge makes probe move closer to liquid film surface, when probe tip just contacts with liquid level, forms path, universal meter numerical value is bright
Aobvious change, records screw micrometer reading a, continues screw mircrometer gauge, when universal meter numeral is mutated again, stops driving
Dynamic, now probe contacts with working electrode surface, record micrometer caliper numerical value b, the difference of the reading twice of micrometer caliper, i.e.,
For thickness of liquid film.
The thickness of liquid film error that traditional thin liquid film film thickness measuring method is measured is larger, when as little as more than ten microns of thickness of liquid film
When even lower, the trickle change of micrometer caliper all can cause screw micrometer reading to have huge difference, cause liquid film thick
Degree is inaccurate, but to metal, in the corrosion research under thin liquid film, micron-sized thickness is the weight of thin liquid film corrosion research
Point.
Meanwhile with the progress of corrosion reaction, liquid level of solution in electrolytic cell may because of volatilization, participate in the originals such as reaction
Thus reduce, cause the very big change of working electrode surface thickness of liquid film so that the data that electrochemical workstation is measured do not have
The reappearance of accuracy and reliability, experimental phenomena and experimental result is low.
A kind of thin liquid film corrosion tests for automatically controlling thickness of liquid film are developed, and then to the thin liquid film of various materials
Corrosion behavior and corrosion mechanism carry out the thoroughgoing and painstaking research of system, for abundant and development Corrosion Science correlation theory, especially
Thin liquid film erosion theory has important science and theory value；For researching and developing safeguard procedures, the thin liquid occurred in engineering is reduced
Erosion problem, suppress atmospheric corrosion, extend in atmospheric environment the service life for the various equipment being on active service, have highly important
Realistic meaning and engineering application value.
The content of the invention
For deficiencies of the prior art, it is an object of the invention to provide a kind of thickness of liquid film that automatically controls
Thin liquid film corrosion testing apparatus.The present apparatus can it is automatic within the specific limits, easily and accurately control and keep thin liquid film to be in certain
One thickness, and the thickness is conveniently adjusted, realizes the electrochemical data acquisition of metal erosion under certain thickness of liquid film, so as to more sharp
In research under different thickness corrosion of metal mechanism.
The technical proposal of the invention is realized in this way：
The thin liquid film corrosion testing apparatus of thickness of liquid film, including iron stand can be automatically controlled, electrolytic cell is placed on iron stand,
Micrometer caliper I and micrometer caliper II, micrometer caliper I and micrometer caliper are provided with the horizontal gird above iron stand
II bottom is correspondingly provided with probe I and probe II, and probe I and probe II are suspended in above electrolytic cell；One reservoir is controlled by band
The water pipe of valve is connected with magnetic valve inlet, and magnetic valve liquid outlet is connected by water pipe with electrolytic cell, and reservoir passes through magnetic valve
Liquid level is supplemented to electrolytic cell；Magnetic valve is that open in usual and flow is adjustable；
Test specimen is fixed in a cell to form working electrode, while auxiliary electrode and reference electrode are provided with electrolytic cell,
Reference electrode is away from working electrode surface 1-3mm；Auxiliary electrode, reference electrode and working electrode are controlled by wire and microcomputer respectively
Electrochemical workstation corresponding port connection, formed electrochemical corrosion measuring system；
Universal meter is connected to micrometer caliper I and working electrode institute in the loop；
Platinum electrode is provided with a cell, and micrometer caliper II, platinum electrode connect through the connection jaws of wire and magnetic valve respectively
Connect, so that three forms loop.
The auxiliary electrode is made up of pvc pipe and platinum filament, pvc pipe diameter 16mm, and platinum filament diameter 0.25mm, purity are
99.9%, platinum filament is wound in pvc pipe outer wall at the 0.5mm of end, and auxiliary electrode is fixed in electrolytic cell on bottom surface vertically.
The working electrode main body be diameter 10mm cylinder steel and diameter 15mm pvc pipe, the bottom surface of cylinder steel one
Welding lead, the cylinder steel bottom surface of wire and whole side are welded with by epoxy resin sealing in pvc pipe, is only exposed another
End face passes as working electrode, wire from pvc pipe；Working electrode is fixed on a diameter of 16mm of auxiliary electrode pvc pipe
In part, working electrode surface keeps same plane with auxiliary electrode PVC pipe port.
The working electrode surface places small spirit bubble, is in angular distribution by three on the base of regulating electrolytic tank
Leveling support highly make working electrode surface horizontal.
Compared with prior art, the present invention has the advantages that：
1）The present apparatus can automatically, easily and accurately control and keep thin liquid film to be in a certain thickness, realize stable thin liquid film
The electrochemistry relevant data acquisition work of metal erosion under thickness, so as to more truely and accurately measure the corruption of the metal under the thickness
Lose mechanism.More accurate, more reliable foundation can be provided to reduce the corrosion of the thin liquid film of metal, and then improve the property of equipment and apparatus
Energy and life-span.
2）Present apparatus thickness of liquid film is conveniently adjusted, and film thickness monitoring scope is wide, beneficial to golden under comparative study difference thickness
The corrosion mechanism of category.
3）Present apparatus automaticity is high, and the precision of control and test is high, the favorable reproducibility of test data.
4）By auxiliary electrode, reference electrode, working electrode（Sample）And micro-processor controlled electrochemical workstation composition
Electrochemical corrosion measuring system, the OCP of working electrode, polarization curve, exchange during measurable thin liquid film corrosion test
The corrosion electrochemistry data such as impedance, electrochemistry noise, to study its electrochemical corrosion behavior and mechanism.
Brief description of the drawings
Fig. 1-thin liquid film of the present invention corrosion testing apparatus structural representation.
The electrode top view of Fig. 2-present invention three.
The different-thickness for Fig. 3-tested to obtain to a specific test system with thin liquid film corrosion testing apparatus of the present invention
Under potential-time curve.
The different-thickness for Fig. 4-tested to obtain to a specific test system with thin liquid film corrosion testing apparatus of the present invention
Under AC impedance curve.
Embodiment
The present invention is described in further detail with reference to specific embodiment.
Referring to Fig. 1, the present invention can automatically control the thin liquid film corrosion testing apparatus of thickness of liquid film, including iron stand 1, brandreth
The adjustable experimental electrolysis cell 2 of the Triangulum with small spirit bubble is placed on platform 1, passes through folder on the horizontal gird 9 above iron stand 1
Tool is provided with micrometer caliper I 7 and micrometer caliper II 10, the corresponding welding of micrometer caliper I 7 and the bottom of micrometer caliper II 10
Provided with probe I 6 and probe II 11, probe I 6 and probe II 11 are suspended to the top of electrolytic cell 2.One reservoir 13 passes through band control valve
17 water pipe 15a is connected with the inlet of magnetic valve 12, and the liquid outlet of magnetic valve 12 is connected by water pipe water pipe 15b with electrolytic cell 2, storage
Liquid bath 13 supplements liquid level by magnetic valve 12 to electrolytic cell 2.The liquid outlet of reservoir 13 is highly higher than the feed liquor open height of magnetic valve 12,
The liquid outlet of magnetic valve 12 is highly higher than the feed liquor open height of electrolytic cell 2, and the replenisher in such reservoir 13 passes through under pressure
Water pipe 15b flows into the inlet of magnetic valve 12, then is flowed into through the liquid outlet of magnetic valve 12 in electrolytic cell 2.
Magnetic valve 12 is that open in usual and flow is adjustable, i.e., is opened when not charged, powered, is turned off.
This experimental rig is specifically used as follows：
1）Before use, advanced row line connection
1.1）Test specimen is fixed in the solution of electrolytic cell 2 formation working electrode 3, while by auxiliary electrode 5 and reference electrode 4
Immerse in the solution in electrolytic cell 2, make reference electrode 4 away from the surface 1-3mm of working electrode 3；Auxiliary electrode 5, reference electrode 4, work
Make electrode 3 to be connected with the corresponding port of micro-processor controlled electrochemical workstation 14 by wire respectively, form electrochemical corrosion and survey
Amount system.
1.2）Universal meter 8 is connected to micrometer caliper I 7 and the institute of working electrode 3 in the loop.
1.3）Platinum electrode 16 is immersed in the solution of electrolytic cell 2, micrometer caliper II 10, platinum electrode 16 are respectively through wire and electricity
The connection jaws connection of magnet valve 12, so that three forms loop.
2）Reset thickness of liquid film
2.1）Regulation probe I 6 and probe II 11 are highly consistent and make micrometer caliper I 7 and the registration of micrometer caliper II 10
Unanimously.
2.2）Reservoir control valve, power of electromagnetic valve are closed, universal meter is opened and uses two wiring holes of COM and V Ω, measure
Journey selects 200M, down screw mircrometer gauge I 7 so that probe I 6 is slowly close to working electrode surface, when general-purpose meter reading is sent out
During changing, stop fine setting, up drive micrometer caliper I 7 to apart from working electrode surface certain altitude, the height as institute
Thickness is needed, closes universal meter；It is consistent with the registration of micrometer caliper I 7 to adjust the registration of micrometer caliper II 10 again simultaneously；So as to complete
Set into thickness of liquid film.
3）Formal measurement and liquid level are automatically replenished
Thickness of liquid film setting is completed, you can carries out liquid level supplement.Reservoir control valve 17 and power of electromagnetic valve are now opened,
Liquid level is shallower during due to just starting, and probe II 11 does not contact with liquid level, and the place loop of magnetic valve 12 is in off state, and electromagnetism
Valve 12 is open in usual, therefore magnetic valve 12 is opened, and the liquid in reservoir 13 flows into electrolytic cell 2 after the coutroi velocity of magnetic valve 12
In, when the liquid level of electrolytic cell 2, which rises to, to be contacted with probe II 11, because two probe heights are identical, thickness of liquid film now
As required thickness, while magnetic valve 12, micrometer caliper II 10 and platinum electrode 16 form path, now magnetic valve 12 closes
Close, stop feed liquor.
Once thickness of liquid film reduces in electrolytic cell 2 during use, probe II 11 is set to depart from liquid level, magnetic valve 12 will again
The liquid make-up into electrolytic cell 2 is opened, is turned off until the liquid level of electrolytic cell 2 rises to contact with probe II 11, so as to control automatically
Thickness of liquid film processed is stable.
The corrosion electrochemistry data of test specimen can be now measured by electrochemical corrosion measuring system, to study thin liquid film
Under the conditions of test specimen electrochemical corrosion behavior.
The corrosion electrochemistry data of electrochemical measurement system measurement include potential-time curve, polarization curve, AC impedance
Electrochemistry noise etc..These data can further analyze the electrochemical corrosion trend, corrosion rate and corrosion speed of work sample
The relation of degree and thickness, corrosion mechanism of the system research metal material under the conditions of thin liquid film, enrich and develop corrosion electrochemistry
Theory, more accurate, more reliable foundation is provided to reduce the corrosion of the thin liquid film of metal；Effective safeguard procedures are developed, improve equipment
With the atmospheric corrosion resistance ability of apparatus, increase the service life.
In embodiment, the auxiliary electrode 5 makes formation as follows, intercepts certain lengthΦ16mm pvc pipe,
WillΦ0.25mm, the platinum filament that purity is 99.9%, are wound in pvc pipe outer wall at the 0.5mm of end, form platinum wire auxiliary electrode,
And it is fixed in electrolytic cell on bottom surface vertically.
The working electrode 3 makes formation as follows, will be a diameter ofΦThe 10mm bottom surface of cylinder steel one welding is led
Line, with epoxy resin 18 by the cylinder steel bottom surface of welding lead and whole side-closed inΦIn 15mm pvc pipe 19, only reveal
Go out the other end as working electrode, cylinder specimen is formed after approved sample.Cylinder specimen is fixed on again and above processed
Auxiliary electrode it is a diameter ofΦIn 16mm PVC pipe, working electrode surface keeps same flat with auxiliary electrode PVC pipe port
Face.I.e. auxiliary electrode 5 can so reduce voltage drop and other influences at 0.5mm below the place plane of working electrode 3
Factor.The mutual alignment relation of auxiliary electrode and working electrode is shown in Fig. 2.
Reference electrode 4 is saturated calomel electrode in this example；Saturated calomel electrode is conventional electrochemical corrosion test reference electricity
Pole, its dependable performance, current potential are stable, it is small to disturb.The use of reference electrode and auxiliary electrode ensures the electricity that this experimental rig is measured
Chemical attack data result is more accurate, reliable.
The working electrode surface places small spirit bubble, makes working electrode surface water by the base of regulating electrolytic tank
It is flat.
Small spirit bubble is installed, adjusting apparatus can obtain level at any time, it is ensured that the thin liquid film thickness of specimen surface is uniform, makes
The metal corrosion test obtained under same thickness of liquid film is carried out.
Probe isΦ5mm, tip are spherical chromium-zirconium-copper；In order to improve the accuracy of level control, the bulb of two probes
Surface carries out chemical etching processing, to prepare hydrophobicity probe bulb surface, reduces because suction-operated causes liquid level and probe
Error caused by can not separating in time.From precision 0.001mm high-precision micrometer caliper, when guarantee thickness is several microns
Accuracy, reduce error, it is ensured that the accuracy of thickness so that corrosion test of the metal under different thickness is carried out.
Magnetic valve 12 selects normal-open electromagnetic valve, predominantly polytetrafluoroethylene (PTFE) material, latus rectum 1mm, pressure 0.2Mpa, manually
It is about 2m/min to adjust its lowest speed, thickness of liquid film in electrolytic cell is increased the time used in 3 μm as 2s or so.From open type
Miniature regulating flow quantity magnetic valve, when liquid level, which reduces, to be disconnected with probe, loop current is interrupted, and magnetic valve is opened, and starts feed liquor,
Because thickness is micron order, valve latus rectum selects 1mm, it is ensured that liquid film is with the increase of micron step velocity, so as to accurately keep liquid film thick
The accuracy of degree.
The constant potential scope of electrochemical workstation described in this example is -10 V -+10V, and the minimum of current density-time is adopted
For sample at intervals of 1 μ s, ac impedance measurement frequency is 0.00001 to 1MHz, potential scanning speed scope be 0.000001V/s extremely
10,000V/s.The work station measurement range is wide, high resolution, stable performance, it is ensured that the electrochemistry that this experimental rig is measured is rotten
It is more accurate, reliable to lose data result.
The present apparatus can automatically, easily and accurately control and keep thin liquid film to be in a certain thickness, and film thickness monitoring scope is wide,
The electrochemistry relevant data acquisition work of metal erosion under thin liquid film thickness is realized, so as to more truely and accurately measure in different films
The lower corrosion of metal mechanism of thickness, and its automaticity is high, the precision of control and test is high, the favorable reproducibility of test data.
The result of the specific experiment carried out using above experimental rig is as follows：
Experiment work electrode isΦThe 10mm steel of cylinder 4130, approved sample is carried out using the method for the invention, after approved sample
Apparent size isΦ15 × 25mm, test(ing) medium are the potassium acetate type road face deicing liquid that concentration is 25%, 25 ± 0.5 DEG C of temperature.Will
Working electrode is arranged on electrolytic cell center, and adjustment work electrode surface is horizontal, adjusts two probe heights and micrometer caliper
Registration is consistent.Reservoir control valve, power of electromagnetic valve are first closed, universal meter is opened and uses two wiring holes of COM and V Ω, measure
Journey selects 200M, down screw mircrometer gauge I so that probe I is slowly close to working electrode surface, when general-purpose meter reading occurs
During change, show that probe I touches working electrode surface, stop fine setting, up drive at micrometer caliper I to required thickness,
The height that micrometer caliper I up moves is thickness, therefore the height up moved by changing micrometer caliper I, you can
Change thickness, so as to realize the test measurement under different thickness.Universal meter is closed, while adjusts the registration of micrometer caliper II and spiral shell
The rotation registration of mircrometer gauge I is consistent again, and now two probe lower ends are highly completely the same.Open control valve（Liquid outlet tongs）And electricity
Magnet valve power supply, because probe II does not contact with liquid level, magnetic valve is in off state, and magnetic valve valve is opened, and liquid is through electromagnetism
Flowed into after valve coutroi velocity in electrolytic cell, realize the supplement to liquid level.When liquid level of electrolyzer, which rises to, to be contacted with probe I II,
Thickness of liquid film now is required thickness, and magnetic valve, micrometer caliper II and platinum electrode form path, and magnetic valve valve closes
Close, stop feed liquor.Once thickness is inadequate, i.e., liquid level declines, and probe II just departs from liquid level, and magnetic valve is in breaking shape
State, magnetic valve valve will automatically turn on, the liquid make-up into electrolytic cell, until probe II contacts with liquid level.Measured entirely
Cheng Zhong, so repeatedly, thus keep thickness stable.
Electro-chemical test major parameter is：OCPETesting time 1800s, ac impedance measurement frequency are 0.00001
To 1MHz, polarization curve polarization potential：E± 0.5V, scanning speed is 0.001V/s, selects automatic sensitivity.
Fig. 3 is to measure different thin liquid films thickness under being adjusted using the thin liquid film corrosion testing apparatus for automatically controlling thickness of liquid film
OCP under degree.It can be obtained from Fig. 3：As thickness of liquid film increases, 4130 steel are in 25% potassium acetate type deicing liquid thin liquid film
The negative shifting of OCP under covering is obvious, tentatively can determine whether as thickness of liquid film increases, corrosion rate is accelerated.Fig. 4 is 4130 steel
Under the system AC impedance with thickness of liquid film variation relation.It can be obtained according to Fig. 4, as thickness of liquid film increases, corrosion rate increases
Greatly, it is consistent with Fig. 3 results.Illustrating that this automatically controls the thin liquid film corrosion testing apparatus of thickness of liquid film can be effective for thin liquid
The control of film thickness.
The above embodiment of the present invention is only example to illustrate the invention, and is not the implementation to the present invention
The restriction of mode.For those of ordinary skill in the field, other can also be made not on the basis of the above description
Change with the change and variation of form, such as the length, width and height equivalence of sample can be made and change according to individual demand.Here can not
All embodiments are exhaustive.Every obvious change or change for belonging to technical scheme and amplifying out
The dynamic row still in protection scope of the present invention.
Claims (5)
1. the thin liquid film corrosion testing apparatus of thickness of liquid film can be automatically controlled, it is characterised in that：Including iron stand（1）, iron stand
（1）Upper placement electrolytic cell（2）, in iron stand（1）The horizontal gird of top（9）It is provided with micrometer caliper I（7）With spiral micrometer
Device II（10）, micrometer caliper I（7）With micrometer caliper II（10）Bottom is correspondingly provided with probe I（6）With probe II（11）, visit
Pin I（6）With probe II（11）It is suspended in electrolytic cell（2）Top；One reservoir（13）Pass through band control valve（17）Water pipe with electricity
Magnet valve（12）Inlet connects, magnetic valve（12）Liquid outlet passes through water pipe and electrolytic cell（2）Connection, reservoir（13）Pass through electromagnetism
Valve（12）To electrolytic cell（2）Supplement liquid level；Magnetic valve is that open in usual and flow is adjustable；
In electrolytic cell（2）Middle fixed test specimen is to form working electrode（3）, while electrolytic cell（2）In be provided with auxiliary electrode（5）And ginseng
Compare electrode（4）, reference electrode is saturated calomel electrode, reference electrode（4）Away from working electrode（3）Surface 1-3mm；Auxiliary electrode
（5）, reference electrode（4）And working electrode（3）Pass through wire and micro-processor controlled electrochemical workstation respectively（14）Respective end
Mouth connection, forms electrochemical corrosion measuring system；
Universal meter（8）It is connected to micrometer caliper I（7）And working electrode（3）Institute is in the loop；
In electrolytic cell（2）In be provided with platinum electrode（16）, micrometer caliper II（10）, platinum electrode（16）Respectively through wire and magnetic valve
（12）Connection jaws connection so that three formed loop.
2. the thin liquid film corrosion testing apparatus according to claim 1 for automatically controlling thickness of liquid film, it is characterised in that：Institute
State auxiliary electrode to be made up of pvc pipe and platinum filament, pvc pipe diameter 16mm, platinum filament diameter 0.25mm, purity 99.9%, platinum filament winding
In pvc pipe outer wall at the 0.5mm of end, auxiliary electrode is fixed in electrolytic cell on bottom surface vertically.
3. the thin liquid film corrosion testing apparatus according to claim 2 for automatically controlling thickness of liquid film, it is characterised in that：Institute
Working electrode main body is stated as diameter 10mm cylinder steel and diameter 15mm pvc pipe, the bottom surface welding lead of cylinder steel one, weldering
The cylinder steel bottom surface of wire and whole side are connected to by epoxy resin sealing in pvc pipe, only expose other end conduct
Working electrode, wire pass from pvc pipe；Working electrode is fixed in a diameter of 16mm of auxiliary electrode PVC pipe, work electricity
Pole surface keeps same plane with auxiliary electrode PVC pipe port.
4. the thin liquid film corrosion testing apparatus according to claim 3 for automatically controlling thickness of liquid film, it is characterised in that：Institute
State working electrode surface and place small spirit bubble, be in the leveling support of angular distribution by three on the base of regulating electrolytic tank
Highly make working electrode surface horizontal.
5. the thin liquid film corrosion testing apparatus according to claim 1 for automatically controlling thickness of liquid film, it is characterised in that：Institute
The bulb surface for stating probe I and probe II carries out chemical etching processing, to form hydrophobicity probe bulb surface, reduces bulb table
In face of the suction-operated of solution.
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| CN110274870B (en) * | 2019-08-06 | 2024-07-02 | 四川轻化工大学 | Controllable crevice corrosion test device and method |
| CN110542648B (en) * | 2019-09-29 | 2024-02-20 | 福州大学 | Electrochemical corrosion experiment system |
| CN111537430A (en) * | 2020-05-08 | 2020-08-14 | 浙江华电器材检测研究所有限公司 | Testing device and testing method for simulating atmospheric corrosion of power grid metal |
| CN111398158A (en) * | 2020-05-08 | 2020-07-10 | 浙江华电器材检测研究所有限公司 | Variable electric field loaded atmospheric corrosion simulation test system and method |
| CN112014308A (en) * | 2020-09-07 | 2020-12-01 | 中国石油大学(华东) | Raman-enhanced electrochemical corrosion cell and control method thereof |
| CN112611706A (en) * | 2020-12-09 | 2021-04-06 | 东北大学 | Device and method for researching growth of interface film by nondestructive means |
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| JP2012026945A (en) * | 2010-07-27 | 2012-02-09 | Hitachi Ltd | Method and device for atmospheric corrosion test of metal material for home electrical appliance |
| CN103293094B (en) * | 2013-06-18 | 2015-08-12 | 北京科技大学 | A kind of electro-chemical measuring apparatus and using method thereof that quantitatively can change thickness of liquid film |
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