CN109208001A - A kind of method that metal surface regional area accurately corrodes - Google Patents
A kind of method that metal surface regional area accurately corrodes Download PDFInfo
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- CN109208001A CN109208001A CN201811336737.5A CN201811336737A CN109208001A CN 109208001 A CN109208001 A CN 109208001A CN 201811336737 A CN201811336737 A CN 201811336737A CN 109208001 A CN109208001 A CN 109208001A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/02—Local etching
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/02—Etching
- C25F3/14—Etching locally
Abstract
The present invention relates to detection field, specially a kind of method that metal surface regional area accurately corrodes.This method is directed to the corrosion of metal material, after sample inlays sample, to erosional surface grinding and polishing, carry out corrosion-resistant mask process, remove the local masked areas of burnishing surface mask location, the regional area for exposing metal covering, the metal regional area exposed using spontaneous corrosion or the corrosion of accelerated corrosion method, is removed all exposure masks and just obtains local corrosion sample.The arbitrary surfaces of arbitrary shape sample can be corroded；Local corrosion region can be point, line or face；Quantity, size, shape, position, the corrosion depth in local corrosion region can be controlled accurately；Consistent series of standards sample can be prepared.
Description
Technical field
The present invention relates to detection fields, further relate to metal erosion field, specially a kind of metal surface partial zones
The method that domain is accurately corroded.
Background technique
Metallic material local corrosion is that metallic substrate surface is corrosion-free and a kind of only phenomenon for corroding of regional area.
The method for obtaining local corrosion sample at present mainly has sample natural exposing, intercepts one section of sample on the material corroded
The methods of product, accelerated galvanic corrosion, corrosion area size, shape, position, quantity and corrosion depth are uncontrollable.It there is no at present
The method of accurate control metallic material local corrosion especially has not been reported the accurate control of the corrosion in micron-scale region.
Application No. is the patents of invention of CN201720469593.5 to disclose a kind of metal part corruption in simulated solution
It loses device and is not related to the preparation of the local corrosion sample of manual control for analyzing local corrosion mechanism.
Application No. is the patents of invention of CN201810266738.0 to disclose a kind of critical pitting temperature measuring method, is used for
Pitting potential is measured, is not related to the preparation of the spot corrosion sample of manual control.
Application No. is the patents of invention of CN201810193031.1 to disclose comentation hardening gear elasto-plastic Contact fatigue point
Erosion and peeling Risk Forecast Method, are not related to the preparation of the spot corrosion sample of manual control.
Application No. is the patents of invention of CN201810049079.5 to disclose a kind of characterization cast austenitic-ferrite stainless
The method of steel pitting corrosion is not related to the preparation of the spot corrosion sample of manual control.
Application No. is the patent of invention of CN201711136460.7 disclose be mingled in a kind of evaluation steel species and its
The method for inducing spot corrosion trend, is not related to the preparation of the spot corrosion sample of manual control.
Application No. is the patents of invention of CN201710881432.1 to disclose a kind of gear pitting corrosion mould based on probability distribution
Type modeling method, discloses the distributed model of gear pitting corrosion, is not related to the preparation of the spot corrosion sample of manual control.
Application No. is the patents of invention of CN201710944928.9 to disclose epicyclic gearbox sun gear gradual change spot corrosion time-varying
Mesh stiffness analysis method is not related to the preparation of the spot corrosion sample of manual control.
Application No. is CN201710789647.0 patents of invention to disclose a kind of microcell electrochemistry evaluation steel spot corrosion probability
Method, be not related to the preparation of the spot corrosion sample of manual control.
A kind of physics teaching experiment is disclosed application No. is CN201721056570.8 patent of invention to be opened with anti-spot corrosion hilted broadsword is small
It closes, is not related to the preparation of the spot corrosion sample of manual control.
Application No. is the patents of invention of CN201710463586.9 to disclose a kind of aluminium alloy local corrosion evaluating apparatus, uses
In the evaluation for corroding generation in entire surface, cannot accurate control corrosion rate position, shape, size, quantity etc..
Application No. is the patents of invention of CN201711240009.X to disclose a kind of microcell electrochemistry evaluation resistance to part of steel
The method of corrosive nature, is the method using solution spontaneous corrosion to local corrosion, realizes accelerated corrosion without additional power source,
It cannot accurate control corrosion rate depth etc..
The heterogeneous texture part for disclosing multi-electrode coupling application No. is the patent of invention of CN201710413898.9 is rotten
The test macro and method of erosion are not related to the preparation of the local corrosion sample of manual control.
Application No. is the patents of invention of CN201611012989.3 to disclose a kind of deep-sea simulated environment local corrosion test
Device and its test method are not related to the accurate control of position, shape, size, depth, quantity of corrosion etc..
Application No. is the patents of invention of CN201510326095.0 to disclose a kind of producing device of local corrosion steel test specimen
And production method, the local corrosion are still large range of corrosion, the tens of square millimeters of corroded area, the method discomfort
Together in the local corrosion of tiny area, such as 1 square millimeter or less.
Application No. is the patent of invention of CN201510221002.8 disclose it is a kind of using Laser Scanning Confocal Microscope to etch pit
The method that depth is measured is not related to corroding the preparation of sample.
Application No. is the patents of invention of CN200910197594.9 to disclose a kind of microcell corrosion electric current density measurement weldering
The method of pipe trench groove corrosion sensibility is not related to the preparation of the local corrosion sample of manual control.
Application No. is the patents of invention of CN200810107311.2 to disclose a kind of continuously monitoring metal material microcell corrosion
The method of depth distribution is not related to corroding the preparation of sample.
Application No. is the patents of invention of CN200810107312.7 to disclose a kind of continuous monitoring plate-shaped metal material microcell
The fixture of corrosion depth distribution is not related to corroding the preparation of sample.
The Ship Mechanics SUM of 4th phase in 2007 discloses paper " the Ship Structure steel marine environment spot corrosion model research of Wang Yan dance
One of: maximum pit depth time-varying model ", it is not related to the accurate control preparation of spot corrosion sample.
The Acta Metallurgica Sinica of 7th phase in 2012 discloses " spot corrosion of 304 stainless steels in 3.5%NaCl solution of Du Nan paper
Kinetics and mechanism ", the corrosion sample is solution spontaneous corrosion, and erosional surface diameter 10mm is not related to the essence of spot corrosion sample
Really control preparation.
The Chinese corrosion and protection journal of 3rd phase in 2012 discloses Li Ji paper, and " electrochemistry of 304 stainless steel spot corrosion is made an uproar
Acoustic signature ", the corrosion sample is solution spontaneous corrosion, and erosional surface is the square of side length 10mm, is not related to spot corrosion sample
Accurate control preparation.
The material engineering of 6th phase in 2014 discloses Du Nan paper, and " electrochemical impedance spectroscopy of 304 stainless steel Pitting corrosion behaviors is ground
Study carefully ", the corrosion sample is solution spontaneous corrosion, and erosional surface diameter 10mm is not related to the accurate control preparation of spot corrosion sample.
The corrosion and protection of 3rd phase in 2014 disclose the super paper of leaf " stainless steel Pitting corrosion behavior and research method into
Exhibition ", it is not related to the accurate control preparation of spot corrosion sample.
The material Leader of 12nd phase in 2015 discloses stone forest paper " Pitting Mechanism and research method of stainless steel ", does not relate to
And the accurate control preparation of spot corrosion sample.
What high mountain paper the Acta Metallurgica Sinica of 12nd phase in 2016 discloses, and " microstructure evolution of pearlitic steel is to its spot corrosion row
For influence ", the corrosion sample be solution spontaneous corrosion, erosional surface be side length 5mm multiplied by the rectangular of 4.5mm, be not related to
It is prepared by the accurate control of spot corrosion sample.
For comprehensive disclosure document with from the point of view of data, the manual control about metallic material local tiny area corrosion sample is accurate
The method of preparation is not made public also.
Summary of the invention
Goal of the invention of the invention is in view of the above-mentioned problems, providing a kind of side that metal surface regional area accurately corrodes
Method.In this way, a kind of local corrosion sample can be prepared, so that local corrosion face size, shape, position, quantity and corruption
It is controllable to lose depth.
In order to realize the above goal of the invention, the specific technical proposal of the invention is:
A kind of method that metal surface regional area accurately corrodes comprising following steps:, will be wait corrode after sample inlays sample
Face grinding and polishing carries out corrosion-resistant mask process, removes the local masked areas of burnishing surface mask location, exposes the office of metal covering
Portion region, the metal regional area exposed using spontaneous corrosion or the corrosion of accelerated corrosion method, is removed all exposure masks and just obtains office
Corrode sample in portion.
For the method for the invention is better achieved, this method comprising the following specific steps
1) metal sample is inlayed into sample, edge sample material can be any one in epoxy resin, and edge sample material answers acid and alkali-resistance
Corrosion；
2) by inlay sample after sample certain on one side as being polished directly to erosional surface, it is therefore an objective to expose metal smoothening table
Face, using following any ways:
Mode 1: using the sand paper gradually grinding and polishing from thick to thin of different-grain diameter；
Mode 2: grinding machine grinding and polishing is used；
Mode 3: it is polished using ultrasonic grinding；
Mode 4: electrochemical process grinding and polishing is used；
3) mask process is carried out to the metal smoothening surface of exposing, done exposure mask answers acid-alkali-corrosive-resisting, and done exposure mask has been answered
The smooth finish surface that complete hiding step 2) is exposed, smooth finish surface contact well with exposure mask, Ying Wuqi between smooth finish surface and exposure mask
Bubble or stomata, using following any ways:
Mode 1: 502 glue exposure masks are used；
Mode 2: epoxy resin exposure mask is used；
Mode 3: photoresist exposure mask is used；
Mode 4: sealant tape exposure mask is used；
4) in the mask surface borehole of step 3) and expose the regional area of metal surface, hole can be point, line or face, hole
Quantity, size, shape, position can according to need arbitrarily selected, borehole uses following any ways:
Mode 1: it is pierced, cut, scraped using sharp things such as needle, tip tweezers；
Mode 2: it is processed using tool mechanical, such as vehicle, milling, brill；
Mode 3: ion beam etching is used；
Mode 4: photoengraving is used；
5) using spontaneous corrosion or electrochemistry accelerated corrosion method corrosion step 4) the metal regional area that exposes, corrosion can
To be hydrogenation corrosion, it is also possible to oxidation corrosion, is also possible to the comprehensive corrosion of hydrogen-oxygen；Corrosion can be in solution environmental, can also
In atmosphere；Corrosive medium can be acid, alkali or salt.
6) cleaning step 5) sample, it removes as needed or obtains required office without removing exposure mask and edge sample substance
Corrode sample in portion.
Further is that the method for the invention is better achieved, and for spontaneous corrosion, the corrosion depth of sample can
By selecting specific corrosive medium type, corrosive concentration, etching time etc. to be controlled；
Further is that the method for the invention is better achieved, for electrochemistry accelerated corrosion, the corrosion of sample
Depth can be by selecting specific corrosive medium type, corrosive concentration, etching time, corrosion current etc. to be controlled.
The positive effect of the present invention is embodied in:
(1) arbitrary surfaces of arbitrary shape sample can be corroded；
(2) local corrosion region can be point, line or face；
(3) quantity, size, shape in local corrosion region, position can accurately control；
(4) corrosion depth in local corrosion region can be controlled accurately；
(5) corrosion process is repeatable, convenient for preparing consistent series of standards sample.
Detailed description of the invention
Fig. 1 is a kind of spontaneous corrosion process flow chart using present invention preparation local corrosion sample.
Fig. 2 is the main view after the edge sample of Examples 1 and 2.
Fig. 3 is the main view after the grinding and polishing of Examples 1 and 2.
Fig. 4 is the main view after the exposure mask of Examples 1 and 2.
Fig. 5 is the main view after corrosion area borehole of Examples 1 and 2.
Fig. 6 is the top view of the local corrosion sample of embodiment 1.
Fig. 7 is the top view of the local corrosion sample of embodiment 2.
Fig. 8 is a kind of selection process process figure using present invention preparation local corrosion sample.
Fig. 9 is the main view after the sample connecting wire of embodiment 7.
Figure 10 is the main view after the edge sample of embodiment 7.
Figure 11 is the main view after the grinding and polishing of embodiment 7.
Figure 12 is the main view after the exposure mask of embodiment 7.
Figure 13 is the main view after corrosion area borehole of embodiment 7.
Figure 14 is the electrochemical corrosion schematic diagram of embodiment 7.
Figure 15 is the stereoscan photograph of the corrosion area of embodiment 7, and circular aperture is corrosion area in figure.
Figure 16 is the stereoscan photograph of the corrosion area of embodiment 7, and the dell in figure in round corrosion area is for true
Determine the corrosion depth of corrosion area.
Figure 17 is the stereoscan photograph of the corrosion area corrosion depth of embodiment 7.
Figure 18 is the main view after corrosion area borehole of embodiment 8.
Figure 19 is the electrochemical corrosion schematic diagram of embodiment 8.
Figure 20 is the stereoscan photograph of the corrosion area of embodiment 8, and two circular apertures are corrosion area in figure.
Figure 21 is the stereoscan photograph of the corrosion area corrosion depth of embodiment 8.
Figure 22 is the stereoscan photograph of the corrosion area of embodiment 9, and two circular apertures are corrosion area in figure.
Figure 23 is the stereoscan photograph of the corrosion area corrosion depth of embodiment 9.
Figure 24 is the stereoscan photograph to corrosion area borehole of embodiment 10, and two circular apertures are to corrosion region in figure
Domain.
Figure 25 is the stereoscan photograph of the corrosion area corrosion depth of embodiment 10.
Figure 26 is the top view of the local corrosion sample of embodiment 12.
Figure 27 is the top view of the local corrosion sample of embodiment 13.
Marked in the figure: 1 is epoxy resin, 2 be metal, and the 3 metal smoothening surface to expose after grinding and polishing, 4 be exposure mask,
5 be corrosion area, and 6 be conducting wire, 7 and 8 is embodiment 8, two round corrosion areas in embodiment 9, embodiment 10, and 9 be power supply, 10
It is the container for containing etchant solution for Pt electrode, 11,12 be the linear corrosion area in embodiment 12, and 13 is in embodiments 13
Triangle corrosion area.
Specific embodiment
In order to make summary of the invention of the invention easily facilitate understanding, With reference to embodiment to technology of the invention
Scheme is further elaborated.But the range that this should not be interpreted as to the above-mentioned theme of the present invention is only limitted to following embodiments.
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification unless specifically stated can be equivalent or with similar purpose by other
Alternative features are replaced.That is, unless specifically stated, each feature is an example in a series of equivalent or similar characteristics
?.
Embodiment 1:
As shown in Fig. 1 process, a kind of method that metal surface regional area accurately corrodes, comprising the following steps:
1) metal zirconium sample is inlayed into sample, zirconium size 5mm*5mm*1mm, edge sample material is epoxy resin, and entirety is straight after inlaying sample
Diameter 15mm, thickness 5mm, such as Fig. 2；
2) the sample 5mm*5mm after edge sample is polished directly as to erosional surface, exposes zirconium smooth finish surface；Grinding is thrown
Gloss is gradually ground from thick to thin with the sand paper of 500#, 800#, 1200#, 2400# different-grain diameter, using polishing cloth polishing, is exposed
The smooth finish surface of zirconium, such as Fig. 3；
3) mask process is carried out to the zirconium smooth finish surface of exposing, specifically carries out exposure mask using 502 glue, mask thicknesses are about
1mm, exposure mask are completely covered by exposed smooth finish surface, and zirconium smooth finish surface is contacted with exposure mask well, between smooth finish surface and exposure mask
Bubble-free or stomata, such as Fig. 4, specific masking method are as follows: soft 502 glue is coated in masked areas, overleaf using heat
Solidify after wind is dry；
4) mask surface is pierced, cut or scraped using tip tweezers, dig out hole, it is made to expose zirconium surface 0.5mm*0.5mm's
Regional area 1, position is located at the center on zirconium surface, shape be it is rectangular, quantity is 1, such as Fig. 5；
5) sample of step 4) is placed in the aqueous sulfuric acid that mass concentration is 10% and is impregnated 12 hours, reach local corruption
The purpose of erosion；
6) the edge sample resin and exposure mask in step 5) are removed, is cleaned by ultrasonic using acetone, just obtaining local corrosion quantity is
1, area 0.5mm*0.5mm, shape are the sample of rectangular sulfuric acid spontaneous corrosion 12h, such as Fig. 6.
Embodiment 2:
As shown in Fig. 1 process, a kind of method that metal surface regional area accurately corrodes, comprising the following steps:
1) metal zirconium sample is inlayed into sample, zirconium size 5mm*5mm*1mm, edge sample material is epoxy resin, and entirety is straight after inlaying sample
Diameter 15mm, thickness 5mm, such as Fig. 2；
2) the sample 5mm*5mm after edge sample is polished directly as to erosional surface, exposes zirconium smooth finish surface；Grinding is thrown
Gloss is gradually ground from thick to thin with the sand paper of 500#, 800#, 1200#, 2400# different-grain diameter, using polishing cloth polishing, is exposed
The smooth finish surface of zirconium, such as Fig. 3；
3) mask process is carried out to the zirconium smooth finish surface of exposing, exposure mask is specifically carried out using paraffin, mask thicknesses about 1mm,
Exposure mask is completely covered by exposed smooth finish surface, and zirconium smooth finish surface is contacted with exposure mask well, without gas between smooth finish surface and exposure mask
Bubble or stomata, such as Fig. 4, specific masking method are as follows: heat paraffin at 100 DEG C, paraffin is coated in after becoming liquid to exposure mask
Region solidifies after natural drying；
4) mask surface is pierced, cut or scraped using tip tweezers, dig out hole, it is made to expose zirconium surface 0.5mm*0.5mm's
Regional area 1, position is located at the center on zirconium surface, shape be it is rectangular, quantity is 1, such as Fig. 5；
5) sample of step 4) is placed in the aqueous sulfuric acid that mass concentration is 10% and is impregnated 12 hours, reach local corruption
The purpose of erosion；
6) the edge sample resin and exposure mask in step 5) are removed, is cleaned by ultrasonic using acetone, just obtaining local corrosion quantity is
1, area 0.5mm*0.5mm, shape are the sample of rectangular sulfuric acid spontaneous corrosion 12h, such as Fig. 6.
Embodiment 3:
As shown in Fig. 1 process, a kind of method that metal surface regional area accurately corrodes, comprising the following steps:
1) metal zirconium sample is inlayed into sample, zirconium size 5mm*5mm*1mm, edge sample material is epoxy resin, and entirety is straight after inlaying sample
Diameter 15mm, thickness 5mm, such as Fig. 2；
2) the sample 5mm*5mm after edge sample is polished directly as to erosional surface, exposes zirconium smooth finish surface；Grinding is thrown
Gloss is gradually ground from thick to thin with the sand paper of 500#, 800#, 1200#, 2400# different-grain diameter, using polishing cloth polishing, is exposed
The smooth finish surface of zirconium, such as Fig. 3；
3) mask process is carried out to the zirconium smooth finish surface of exposing, exposure mask is specifically carried out using hot melt adhesive, mask thicknesses are about
1mm, exposure mask are completely covered by exposed smooth finish surface, and zirconium smooth finish surface is contacted with exposure mask well, between smooth finish surface and exposure mask
Bubble-free or stomata, such as Fig. 4, specific masking method are as follows: heat hot melt adhesive at 130 DEG C, after hot melt adhesive becomes flow regime
Coated in masked areas, solidify after cold wind drying；
4) mask surface is pierced, cut or scraped using tip tweezers, dig out hole, it is made to expose zirconium surface 0.5mm*0.5mm's
Regional area 1, position is located at the center on zirconium surface, shape be it is rectangular, quantity is 1, such as Fig. 5；
5) sample of step 4) is placed in the aqueous sulfuric acid that mass concentration is 10% and is impregnated 12 hours, reach local corruption
The purpose of erosion；
6) the edge sample resin and exposure mask in step 5) are removed, is cleaned by ultrasonic using acetone, just obtaining local corrosion quantity is
1, area 0.5mm*0.5mm, shape are the sample of rectangular sulfuric acid spontaneous corrosion 12h, such as Fig. 6.
Embodiment 4:
As shown in Fig. 1 process, a kind of method that metal surface regional area accurately corrodes, comprising the following steps:
1) metal zirconium sample is inlayed into sample, zirconium size 5mm*5mm*1mm, edge sample material is epoxy resin, and entirety is straight after inlaying sample
Diameter 15mm, thickness 5mm, such as Fig. 2；
2) the sample 5mm*5mm after edge sample is polished directly as to erosional surface, exposes zirconium smooth finish surface；Grinding is thrown
Gloss is gradually ground from thick to thin with the sand paper of 800#, 1200#, 2400#, 4000# different-grain diameter, using polishing cloth polishing, dew
The smooth finish surface of zirconium, such as Fig. 3 out；
3) mask process is carried out to the zirconium smooth finish surface of exposing, specifically carries out exposure mask using soft 502, mask thicknesses are about
1mm, exposure mask are completely covered by exposed smooth finish surface, and zirconium smooth finish surface is contacted with exposure mask well, between smooth finish surface and exposure mask
Bubble-free or stomata, such as Fig. 4, specific masking method are as follows: be coated in soft 502 to masked areas, overleaf blown using hot wind
Solidify after dry；
4) mask surface is etched using focused ion beam, makes its regional area 1 that exposes zirconium surface diameter 0.5mm,
Position is located at the center on zirconium surface, and shape is circle, and quantity is 1, such as Fig. 5；
5) sample of step 4) is placed in the aqueous sulfuric acid that mass concentration is 10% and is impregnated 5 hours, reach local corruption
The purpose of erosion；
6) the edge sample resin and exposure mask in step 5) are removed, is cleaned by ultrasonic using acetone, just obtaining local corrosion quantity is
1, the sample that area is diameter 0.5mm, shape is circular sulfuric acid spontaneous corrosion 5h, such as Fig. 6.
Embodiment 5:
As shown in Fig. 1 process, a kind of method that metal surface regional area accurately corrodes, comprising the following steps:
1) stainless steel sample is inlayed into sample, stainless steel size 10mm*5mm*2mm, edge sample material is epoxy resin, is inlayed whole after sample
Body diameter 15mm, thickness 5mm, such as Fig. 2；
2) the sample 10mm*5mm after edge sample is polished directly as to erosional surface, exposes sample smooth finish surface；It grinds
Grinding and polishing gloss is gradually ground from thick to thin with the sand paper of 500#, 800#, 1200#, 2400# different-grain diameter, using polishing cloth polishing,
Expose the smooth finish surface of sample, such as Fig. 3；
3) mask process is carried out to the sample smooth finish surface of exposing, exposure mask, mask thicknesses is specifically carried out using epoxy resin
About 2mm, exposure mask are completely covered by exposed smooth finish surface, and sample smooth finish surface contacts well with exposure mask, smooth finish surface and exposure mask
Between bubble-free or stomata, such as Fig. 4, specific masking method are as follows: the epoxy resin of flow regime is coated in masked areas, heat
Solidify after wind is dry；
4) using diameter 0.5mm drill bit to mask surface centre-drilling hole, it is made to expose the part of sample surfaces diameter 0.5mm
1, region, position are located at the center of sample surfaces, and shape is circle, and quantity is 1, such as Fig. 5；
5) sample of step 4) is placed in the aqueous sulfuric acid that mass concentration is 15% and is impregnated 20 hours, reach local corruption
The purpose of erosion；
6) the edge sample resin and exposure mask in step 5) are removed, is cleaned by ultrasonic using acetone, just obtaining local corrosion quantity is
1, the sample that area is diameter 0.5mm, shape is circular sulfuric acid spontaneous corrosion 20h, such as Fig. 7.
Embodiment 6:
As shown in Fig. 1 process, a kind of method that metal surface regional area accurately corrodes, comprising the following steps:
1) stainless steel sample is inlayed into sample, stainless steel size 10mm*5mm*2mm, edge sample material is epoxy resin, is inlayed whole after sample
Body diameter 15mm, thickness 5mm, such as Fig. 2；
2) the sample 10mm*5mm after edge sample is polished directly as to erosional surface, exposes sample smooth finish surface；It grinds
Grinding and polishing gloss is gradually ground from thick to thin with the sand paper of 500#, 800#, 1200#, 2400#, 4000# different-grain diameter, using ultrasound
Wave vibropolish exposes the smooth finish surface of sample, such as Fig. 3；
3) mask process is carried out to the sample smooth finish surface of exposing, exposure mask, mask thicknesses is specifically carried out using epoxy resin
About 1mm, exposure mask are completely covered by exposed smooth finish surface, and sample smooth finish surface contacts well with exposure mask, smooth finish surface and exposure mask
Between bubble-free or stomata, such as Fig. 4, specific masking method are as follows: the epoxy resin of flow regime is coated in masked areas, heat
Solidify after wind is dry；
4) using diameter 0.5mm drill bit to mask surface centre-drilling hole, it is made to expose the part of sample surfaces diameter 0.5mm
1, region, position are located at the center of sample surfaces, and shape is circle, and quantity is 1, such as Fig. 5；
5) sample of step 4) is placed in the aqueous sulfuric acid that mass concentration is 25% and is impregnated 5 hours, reach local corruption
The purpose of erosion；
6) the edge sample resin and exposure mask in step 5) are removed, is cleaned by ultrasonic using acetone, just obtaining local corrosion quantity is
1, the sample that area is diameter 0.5mm, shape is circular sulfuric acid spontaneous corrosion 5h, such as Fig. 7.
Embodiment 7:
As shown in Fig. 8 process, a kind of method that metal surface regional area accurately corrodes, comprising the following steps:
1) length, width and height are respectively the metal zirconium sample of 5mm, 5mm, 1mm, after lower surface is using the grinding of 800# sand paper, using back
The one end for the conducting wire that length is 100mm is bonded in zirconium sample lower surface, such as Fig. 9 by glue copper foil；
2) sample of step 1) is inlayed by sample using epoxy resin, exposes a section lead outside, such as Figure 10；
3) use 800#, 1200#, 2400#, 4000# carborundum paper grinding steps 2) sample one side and using throw
Light cloth polishing exposes smooth finish surface, such as Figure 11；
4) exposure mask is carried out using bright and clean zirconium surface of soft 502 glue to step 3) and waits for its dry solidification, covering after drying
Film thickness about 0.5mm, such as Figure 12, specific masking method are as follows: soft 502 glue is coated in masked areas, after hot blast drying
Solidification；
5) aperture of a diameter 0.5mm is etched on the exposure mask face of step 4) using focused ion beam, position is optional, dew
The round zirconium surface of diameter 0.5mm out, such as Figure 13；
6) by the wire connecting power cathode of the sample of step 5), Pt electrode connects the anode of power supply, is placed in mass concentration
For in 5% aqueous sulfuric acid, aqueous sulfuric acid temperature is 25 DEG C of room temperature, setting electric current is 3mA, is corroded 3 hours, such as Figure 14,
The preparation method for the aqueous sulfuric acid that mass concentration is 5% specifically: weigh 1000ml deionized water, graduated cylinder weighs 28.6ml sulphur
Acid weighs 2g thiocarbamide, sulfuric acid is slowly added in water, thiocarbamide is then added, stirs evenly.Thiocarbamide be metal in an acidic solution
Corrosion inhibiter, the too fast spilling of water electrolytic gas can be prevented, by be adsorbed on metal surface rise slow releasing function, be that anode and cathode is mixed type sustained
Lose agent；
7) the edge sample resin and exposure mask in step 6) are removed, is cleaned by ultrasonic using acetone, just obtaining local corrosion quantity is
1, shape is the sample round, size is diameter 0.5mm, the circle in the stereoscan photograph such as Figure 15 in kind of corrosion area
Shown in domain, corrosion surface becomes more coarse compared with non-corrosion surface.The corrosion depth measuring method of corrosion area specifically:
Under scanning electron microscope, a dell is formed by the gallium ion exfoliation corrosion regional metal atom of focused ion beam, due to corrosion
The constituent structure of non-corrosion area material is variant, can be with by corrosion and non-corrosion material at the difference on image contrast
Judge the depth such as Figure 16 corroded, measurement is further amplified, obtains 44 microns of corrosion depth.There is length along corrosion depth direction
Strip striped, difference is obvious compared with non-corrosion area, main reason is that the constituent structure of corrosion front and back material is become
Change, lattice coherence state has freeed variation, and the microcell volume of material is changed.
Embodiment 8:
As shown in Fig. 8 process, a kind of method that metal surface regional area accurately corrodes, comprising the following steps:
1) length, width and height are respectively the metal zirconium sample of 5mm, 5mm, 1mm, after lower surface is using the grinding of 800# sand paper, using back
The one end for the conducting wire that length is 100mm is bonded in zirconium sample lower surface, such as Fig. 9 by glue copper foil；
2) sample of step 1) is inlayed by sample using epoxy resin, exposes a section lead outside, such as Figure 10；
3) use 800#, 1200#, 2400#, 4000# carborundum paper grinding steps 2) sample one side and using throw
Light cloth polishing exposes smooth finish surface, such as Figure 11；
4) exposure mask is carried out using bright and clean zirconium surface of soft 502 glue to step 3) and waits for its dry solidification, covering after drying
Film thickness about 0.5mm, such as Figure 12, specific masking method are as follows: soft 502 glue is coated in masked areas, after hot blast drying
Solidification；
5) aperture of a diameter 0.5mm is etched on the exposure mask face of step 4) using focused ion beam, position is optional, dew
The round zirconium surface of diameter 0.5mm out etches the round hole of a diameter 0.5mm in the position apart from center of circular hole 2mm, exposes
The round zirconium surface of diameter 0.5mm, as shown in figure 18；
6) by the wire connecting power cathode of the sample of step 5), Pt electrode connects the anode of power supply, is placed in mass concentration
For in 5% aqueous sulfuric acid, aqueous sulfuric acid temperature is 25 DEG C of room temperature, setting electric current is 3mA, is corroded 2.5 hours, is such as schemed
19；
7) the edge sample resin and exposure mask in step 6) are removed, is cleaned by ultrasonic using acetone, just obtaining local corrosion quantity is
It 2, is the sample of diameter 0.5mm at a distance of 2mm, size, the circle in the stereoscan photograph such as Figure 20 in kind of corrosion area
Shown in domain, corrosion depth is 31 microns, such as Figure 21.
Embodiment 9:
As shown in Fig. 8 process, a kind of method that metal surface regional area accurately corrodes, comprising the following steps:
1) length, width and height are respectively the metal zirconium sample of 5mm, 5mm, 1mm, after lower surface is using the grinding of 800# sand paper, using back
The one end for the conducting wire that length is 100mm is bonded in zirconium sample lower surface, such as Fig. 9 by glue copper foil；
2) sample of step 1) is inlayed by sample using epoxy resin, exposes a section lead outside, such as Figure 10；
3) use 800#, 1200#, 2400#, 4000# carborundum paper grinding steps 2) sample one side and using throw
Light cloth polishing exposes smooth finish surface, such as Figure 11；
4) exposure mask is carried out using bright and clean zirconium surface of soft 502 glue to step 3) and waits for its dry solidification, covering after drying
Film thickness about 0.5mm, such as Figure 12, specific masking method are as follows: soft 502 glue is coated in masked areas, after hot blast drying
Solidification；
5) aperture of a diameter 0.5mm is carved on the exposure mask face of step 4) using tip tweezers, position is optional, exposes straight
The round zirconium surface of diameter 0.5mm carves the round hole of a diameter 0.5mm in the position apart from center of circular hole 1.6mm, exposes diameter
The round zirconium surface of 0.5mm, as shown in figure 18；
6) by the wire connecting power cathode of the sample of step 5), Pt electrode connects the anode of power supply, is placed in mass concentration
For in 5% aqueous sulfuric acid, aqueous sulfuric acid temperature is 25 DEG C of room temperature, setting electric current is 2mA, is corroded 3 hours, such as Figure 19；
7) the edge sample resin and exposure mask in step 6) are removed, is cleaned by ultrasonic using acetone, just obtaining local corrosion quantity is
It 2, is the sample of diameter 0.5mm at a distance of 1.6mm, size, the circle in the stereoscan photograph such as Figure 22 in kind of corrosion area
Shown in region, due to tweezers formation scratch is non-uniform, corrosion surface is more more coarse than focused-ion-beam lithography surface, phase
The surface topography obtained after focused-ion-beam lithography surface corrosion than for is more uniform.Corrosion depth is 37 microns, is such as schemed
23。
Embodiment 10:
As shown in Fig. 8 process, a kind of method that metal surface regional area accurately corrodes, comprising the following steps:
1) length, width and height are respectively the metal zirconium sample of 5mm, 5mm, 1mm, after lower surface is using the grinding of 800# sand paper, using back
The one end for the conducting wire that length is 100mm is bonded in zirconium sample lower surface, such as Fig. 9 by glue copper foil；
2) sample of step 1) is inlayed by sample using epoxy resin, exposes a section lead outside, such as Figure 10；
3) use 800#, 1200#, 2400#, 4000# carborundum paper grinding steps 2) sample one side and using throw
Light cloth polishing exposes smooth finish surface, such as Figure 11；
4) exposure mask is carried out using bright and clean zirconium surface of soft 502 glue to step 3) and waits for its dry solidification, covering after drying
Film thickness about 0.5mm, such as Figure 12, specific masking method are as follows: soft 502 glue is coated in masked areas, after hot blast drying
Solidification；
5) aperture of a diameter 0.5mm is carved on the exposure mask face of step 4) using tip tweezers, position is optional, exposes straight
The round zirconium surface of diameter 0.5mm carves the round hole of a diameter 0.5mm in the position apart from center of circular hole 1.8mm, exposes diameter
The round zirconium surface of 0.5mm, two circle near side (ns) distance 1.3mm, as shown in figure 24；
6) by the wire connecting power cathode of the sample of step 5), Pt electrode connects the anode of power supply, is placed in mass concentration
For in 5% aqueous sulfuric acid, aqueous sulfuric acid temperature is 25 DEG C of room temperature, setting electric current is 2mA, is corroded 2 hours, such as Figure 19；
7) the edge sample resin and exposure mask in step 6) are removed, is cleaned by ultrasonic using acetone, just obtaining local corrosion quantity is
It 2, is the sample of diameter 0.5mm at a distance of 1.8mm, size, corrosion depth is 25 microns, such as Figure 25.
Embodiment 11:
As shown in Fig. 8 process, a kind of method that metal surface regional area accurately corrodes, comprising the following steps:
1) length, width and height are respectively the metal zirconium sample of 5mm, 5mm, 1mm, after lower surface is using the grinding of 800# sand paper, using back
The one end for the conducting wire that length is 100mm is bonded in zirconium sample lower surface, such as Fig. 9 by glue copper foil；
2) sample of step 1) is inlayed by sample using epoxy resin, exposes a section lead outside, such as Figure 10；
3) use 800#, 1200#, 2400#, 4000# carborundum paper grinding steps 2) sample one side and using throw
Light cloth polishing exposes smooth finish surface, such as Figure 11；
4) exposure mask is carried out using bright and clean zirconium surface of soft 502 glue to step 3) and waits for its dry solidification, covering after drying
Film thickness about 0.5mm, such as Figure 12；
5) aperture of a diameter 0.5mm is etched on the exposure mask face of step 4) using focused ion beam, position is optional, dew
The round zirconium surface of diameter 0.5mm out, such as Figure 13；
6) by the wire connecting power cathode of the sample of step 5), Pt electrode connects the anode of power supply, is placed in mass concentration
For in 5% aqueous sulfuric acid, aqueous sulfuric acid temperature is 25 DEG C of room temperature, setting electric current is respectively 1mA, 2mA, 3mA, 4mA, corruption
Losing the time is respectively 1 hour, 2 hours, 2.5 hours, 3 hours, such as Figure 14；
7) the edge sample resin and exposure mask in step 6) are removed, is cleaned by ultrasonic using acetone, just obtaining local corrosion quantity is
1, shape is the sample round, size is diameter 0.5mm, the corrosion depth measuring method of corrosion area specifically: in scanning electricity
Under mirror, a dell is formed by the gallium ion exfoliation corrosion regional metal atom of focused ion beam, is not corroded due to corrosion and
The constituent structure of region material is variant, by corrosion and non-corrosion material at the difference on image contrast, it can be determined that occurs
The depth of corrosion.25 DEG C at room temperature, and in 5% aqueous sulfuric acid, the diameter 0.5mm obtained under different electric currents and time conditions is rotten
The corrosion depth in erosion region see the table below.
Embodiment 12:
As shown in Fig. 8 process, a kind of method that metal surface regional area accurately corrodes, comprising the following steps:
1) length, width and height are respectively the metal zirconium sample of 5mm, 5mm, 1mm, after lower surface is using the grinding of 800# sand paper, using back
The one end for the conducting wire that length is 100mm is bonded in zirconium sample lower surface, such as Fig. 9 by glue copper foil；
2) sample of step 1) is inlayed by sample using epoxy resin, exposes a section lead outside, such as Figure 10；
3) use 800#, 1200#, 2400#, 4000# carborundum paper grinding steps 2) sample one side and using throw
Light cloth polishing exposes smooth finish surface, such as Figure 11；
4) exposure mask is carried out using bright and clean zirconium surface of soft 502 glue to step 3) and waits for its dry solidification, covering after drying
Film thickness about 0.5mm, such as Figure 12, specific masking method are as follows: soft 502 glue is coated in masked areas, after hot blast drying
Solidification；
5) line for using tip tweezers one width 0.5mm of scribing, length 10mm on the exposure mask face of step 4) exposes wide
Spend the zirconium surface of 0.5mm, length 10mm；
6) by the wire connecting power cathode of the sample of step 5), Pt electrode connects the anode of power supply, is placed in mass concentration
For in 5% aqueous sulfuric acid, aqueous sulfuric acid temperature is 25 DEG C of room temperature, setting electric current is 2mA, is corroded 2 hours, such as Fig. 1.
7) remove step 6) in edge sample resin and exposure mask, be cleaned by ultrasonic using acetone, just obtain a width 0.5mm,
The line of length 10mm corrodes sample, such as Figure 26.
Embodiment 13:
As shown in Fig. 8 process, a kind of method that metal surface regional area accurately corrodes, comprising the following steps:
1) length is respectively that the metal zirconium sample of 5mm, 5mm, 1mm use after lower surface is using the grinding of 800# sand paper
The one end for the conducting wire that length is 100mm is bonded in zirconium sample lower surface, such as Fig. 9 by gum copper foil；
2) sample of step 1) is inlayed by sample using epoxy resin, exposes a section lead outside, such as Figure 10；
3) use 800#, 1200#, 2400#, 4000# carborundum paper grinding steps 2) sample one side and using throw
Light cloth polishing exposes smooth finish surface, such as Figure 11；
4) exposure mask is carried out using bright and clean zirconium surface of soft 502 glue to step 3) and waits for its dry solidification, covering after drying
Film thickness about 0.5mm, such as Figure 12, specific masking method are as follows: soft 502 glue is coated in masked areas, after hot blast drying
Solidification；
5) triangle for etching 3 side length 0.5mm on the exposure mask face of step 4) using focused ion beam, exposes 3 sides
The zirconium surface of the triangle of long 0.5mm；
6) by the wire connecting power cathode of the sample of step 5), Pt electrode connects the anode of power supply, is placed in mass concentration
For in 5% aqueous sulfuric acid, aqueous sulfuric acid temperature is 25 DEG C of room temperature, setting electric current is 2mA, is corroded 2 hours, such as Figure 19；
7) the edge sample resin and exposure mask in step 6) are removed, is cleaned by ultrasonic using acetone, just obtains 3 side length 0.5mm's
Triangle corrodes sample, such as Figure 27.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (6)
1. a kind of method that metal surface regional area accurately corrodes, it is characterised in that the following steps are included: after sample edge sample, it will
To erosional surface grinding and polishing, corrosion-resistant mask process is carried out, removes the local masked areas of burnishing surface mask location, exposes metal
The regional area in face, the metal regional area exposed using spontaneous corrosion or the corrosion of accelerated corrosion method, removes all exposure masks just
Obtain local corrosion sample.
2. a kind of method that metal surface regional area accurately corrodes according to claim 1, it is characterised in that: this method
Comprising the following specific steps
1) metal sample is inlayed into sample, edge sample material is the epoxy resin of acid-alkali-corrosive-resisting；
2) by inlay the sample after sample certain on one side as being polished directly to erosional surface, it is therefore an objective to expose metal smoothening surface；
3) mask process is carried out to the metal smoothening surface of exposing, done exposure mask answers acid-alkali-corrosive-resisting, and done exposure mask should hide completely
The smooth finish surface that lid step 2 is exposed, smooth finish surface contact well with exposure mask, answered between smooth finish surface and exposure mask bubble-free or
Stomata；
4) in the mask surface borehole of step 3) and expose the regional area of metal surface, Kong Weidian, line or face, the quantity in hole,
Size, shape, position are arbitrarily selected as needed；
5) using spontaneous corrosion or electrochemistry accelerated corrosion method corrosion step 4) the metal regional area that exposes.
3. according to claim 1 or a kind of preparation of local corrosion sample as claimed in claim 2, it is characterised in that: the corruption
Erosion is hydrogenation corrosion, oxidation corrosion or the comprehensive corrosion of hydrogen-oxygen.
4. a kind of preparation of local corrosion sample according to claim 3, it is characterised in that: the corrosive medium is yes
Acid, alkali or salt.
5. a kind of preparation of local corrosion sample according to claim 3, it is characterised in that: the corrosion is in solution environmental
Or in atmosphere.
6. a kind of preparation of local corrosion sample according to claim 3, it is characterised in that: the shape of the local corrosion
For arbitrary shape.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186945A (en) * | 2019-05-21 | 2019-08-30 | 东莞东阳光科研发有限公司 | A kind of three-dimensional appearance testing method of electrolytic capacitor electrode foil |
| CN111398001A (en) * | 2020-04-01 | 2020-07-10 | 中国船舶重工集团公司第七二五研究所 | Method for preparing corrosion pit on metal material sample |
| CN111719179A (en) * | 2020-05-11 | 2020-09-29 | 唐山钢铁集团有限责任公司 | Electro-corrosion marking liquid for aluminum-silicon-plated coating plate and preparation method thereof |
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001032359A2 (en) * | 1999-11-03 | 2001-05-10 | Applied Materials, Inc. | Ultrasonic metal finishing involving cavitational erosion |
| CN102185040A (en) * | 2011-03-15 | 2011-09-14 | 浙江长兴立信光电科技有限公司 | LED (Light-Emitting Diode) surface roughening process with wet-method chemical corrosion |
| CN103063496A (en) * | 2013-01-08 | 2013-04-24 | 上海宝冶工程技术有限公司 | Brass dezincification-resistance sample preparation method |
| JP2014163823A (en) * | 2013-02-26 | 2014-09-08 | Mitsubishi Heavy Ind Ltd | Corrosion pit material manufacturing method |
| CN107227486A (en) * | 2017-07-11 | 2017-10-03 | 北京科技大学 | A kind of metal partial electrolysis burnishing device |
| CN108362540A (en) * | 2018-03-30 | 2018-08-03 | 中国工程物理研究院流体物理研究所 | A method of preparing spot corrosion in metal surface |
-
2018
- 2018-11-12 CN CN201811336737.5A patent/CN109208001A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001032359A2 (en) * | 1999-11-03 | 2001-05-10 | Applied Materials, Inc. | Ultrasonic metal finishing involving cavitational erosion |
| CN102185040A (en) * | 2011-03-15 | 2011-09-14 | 浙江长兴立信光电科技有限公司 | LED (Light-Emitting Diode) surface roughening process with wet-method chemical corrosion |
| CN103063496A (en) * | 2013-01-08 | 2013-04-24 | 上海宝冶工程技术有限公司 | Brass dezincification-resistance sample preparation method |
| JP2014163823A (en) * | 2013-02-26 | 2014-09-08 | Mitsubishi Heavy Ind Ltd | Corrosion pit material manufacturing method |
| CN107227486A (en) * | 2017-07-11 | 2017-10-03 | 北京科技大学 | A kind of metal partial electrolysis burnishing device |
| CN108362540A (en) * | 2018-03-30 | 2018-08-03 | 中国工程物理研究院流体物理研究所 | A method of preparing spot corrosion in metal surface |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186945A (en) * | 2019-05-21 | 2019-08-30 | 东莞东阳光科研发有限公司 | A kind of three-dimensional appearance testing method of electrolytic capacitor electrode foil |
| CN110186945B (en) * | 2019-05-21 | 2022-03-04 | 东莞东阳光科研发有限公司 | Three-dimensional shape detection method of electrode foil for electrolytic capacitor |
| CN111398001A (en) * | 2020-04-01 | 2020-07-10 | 中国船舶重工集团公司第七二五研究所 | Method for preparing corrosion pit on metal material sample |
| CN111719179A (en) * | 2020-05-11 | 2020-09-29 | 唐山钢铁集团有限责任公司 | Electro-corrosion marking liquid for aluminum-silicon-plated coating plate and preparation method thereof |
| CN111719179B (en) * | 2020-05-11 | 2021-10-12 | 唐山钢铁集团有限责任公司 | Electro-corrosion marking liquid for aluminum-silicon-plated coating plate and preparation method thereof |
| 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 |
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