CN107462456A - Method for displaying metallographic structure - Google Patents
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- CN107462456A CN107462456A CN201610390570.5A CN201610390570A CN107462456A CN 107462456 A CN107462456 A CN 107462456A CN 201610390570 A CN201610390570 A CN 201610390570A CN 107462456 A CN107462456 A CN 107462456A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/32—Polishing; Etching
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Abstract
A kind of method for displaying metallographic structure, including：Aluminium-scandium alloy is provided；Form the first burnishing surface；Electrobrightening is carried out to the first burnishing surface, forms the second burnishing surface, the electrolysis solute of electrolytic polishing liquid includes perchloric acid；Form display surface.Electrobrightening is carried out using the electrolytic polishing liquid containing perchloric acid during electrobrightening in technical solution of the present invention.Aluminium-scandium alloy can react with perchloric acid.Therefore aluminium-scandium alloy can have good corrosive effect in the electrolyte containing perchloric acid after electrobrightening.So carrying out electrobrightening using the electrolytic polishing liquid containing perchloric acid, the cut on the first burnishing surface can be effectively removed, and then improve the smooth degree for forming the second burnishing surface.The raising of second burnishing surface smooth degree, be advantageous to corrosion of the corrosive liquid to grain boundaries in the second burnishing surface, be advantageous to improve the effect that metallographic is shown.
Description
Technical field
The present invention relates to field of machining, more particularly to a kind of method for displaying metallographic structure.
Background technology
Crystal boundary is that structure is identical and be orientated the interface between different crystal.On crystal boundary face, atomic arrangement
Another orientation is transitioned into from an orientation, therefore grain boundaries atomic arrangement is in an interim state.Crystal grain with
Contact surface between crystal grain is just called crystal boundary, and it has extremely for the internal organizational structure of research material
Important meaning.
The material properties such as the internal organizational structure and hardness, intensity, ductility of metal material have directly and
Close contact.Physical state of the chemical composition and various composition of metal or alloy inside alloy
It is referred to as metallographic with chemical state.Metallographic observation is exactly that to study metal material internal organizational structure the most direct
Effective method.
Metallographic observation is exactly to use quantitative metallography principle, the metallographic of flour milling or film to metal or alloy
Microscopic structure is measured and calculated, so that it is determined that the three dimensions pattern of metal or alloy metallographic structure,
And then the quantitative relationship established between metal or alloy constituent, tissue and performance.
Before metallographic observation, it is necessary first to show the metallographic structure of metal or alloy.With science
The development of technology, industrial production increasingly increase for the demand of alloying metal, for these new alloys
Material, it is necessary to new Phase structure study method, it is necessary to new method for displaying metallographic structure, to improve crystalline substance
To display effect.
The content of the invention
The present invention solves the problems, such as to be to provide a kind of method for displaying metallographic structure, to improve crystal orientation display effect.
To solve the above problems, the present invention provides a kind of method for displaying metallographic structure, including：
Aluminium-scandium alloy is provided；The surface of the aluminium-scandium alloy is mechanically polished, forms the first burnishing surface；
Electrobrightening is carried out to first burnishing surface by electrolytic polishing liquid, forms the second burnishing surface, the electricity
The electrolysis solute of solution polishing fluid includes perchloric acid；Surface corrosion is carried out to second burnishing surface, formed aobvious
Show face.
Optionally, by percent by volume, in the electrolytic polishing liquid, the content of perchloric acid is 5% to 10%
In the range of.
Optionally, the electroanalysis solvent of the electrolytic polishing liquid includes：Ethanol, n-butanol and water.
Optionally, by percent by volume, in the electrolytic polishing liquid, the content of ethanol is 60% to 70%
In the range of, the content of n-butanol is in the range of 5% to 10%, and the content of water is in the range of 10% to 30%.
Optionally, in the step of carrying out electrobrightening, the time of electrobrightening was in 40 seconds to 50 seconds scopes
Interior, the voltage of electrobrightening is in the range of 25 volts to 30 volts.
Optionally, carrying out the step of surface corrosion includes：Second burnishing surface is carried out using corrosive liquid
Surface corrosion.
Optionally, in the step of carrying out surface corrosion to second burnishing surface using corrosive liquid, the corruption
Erosion liquid includes corrosive agent, and the corrosive agent includes：Hydrofluoric acid or nitric acid.
Optionally, the corrosive liquid also includes corrosion solvent, and the corrosion solvent is water；Using corrosive liquid
In the step of surface corrosion being carried out to second burnishing surface, by percent by volume, in the corrosive liquid,
The content of hydrofluoric acid is in the range of 3% to 5%, and the content of nitric acid is in the range of 5% to 10%；The content of water
In the range of 85% to 92%.
Optionally, carry out in the step of surface corrosion, etching time is in the range of 30 seconds to 60 seconds.
Optionally, the step of being mechanically polished includes：To the aluminium-scandium alloy table by way of polishing
Face carries out the mechanical polishing.
Optionally, the step of mechanical polishing being carried out to the aluminium-scandium alloy surface by way of polishing
Including：The aluminium-scandium alloy surface is polished using water-based sand paper.
Optionally, the step of being polished using water-based sand paper is included：Successively using the first water-based sand paper,
Second water-based sand paper and the 3rd water-based sand paper are polished the aluminium-scandium alloy surface；First water
Property sand paper includes：The water-based sand paper of 400#, the second water-based sand paper include：The water-based sand paper of 1000#, it is described
3rd water-based sand paper includes：The water-based sand paper of 2000#.
Optionally, the step of mechanical polishing being carried out to the aluminium-scandium alloy surface by way of polishing
In, wetting agent is used as using water.
Optionally, the step of being mechanically polished includes：Polishing time is in the range of 5 minutes to 10 minutes.
Optionally, the method for displaying metallographic structure also includes：In mechanical polishing, electrobrightening and table
One or many cleaning treatments are carried out between any two step of face corrosion.
Optionally, method for displaying metallographic structure also includes：The display surface is observed using microscope.
Compared with prior art, technical scheme has advantages below：
Technical solution of the present invention carries out electrobrightening after mechanical polishing, to the first burnishing surface formed,
Electrobrightening is carried out using the electrolytic polishing liquid containing perchloric acid during the electrobrightening.Aluminium-scandium alloy
It can be reacted with perchloric acid.Therefore aluminium-scandium alloy can after electrobrightening in the electrolyte containing perchloric acid
There is good corrosive effect.So electrobrightening, Neng Gouyou are carried out using the electrolytic polishing liquid containing perchloric acid
Effect removes the cut on first burnishing surface, and then improves the smooth journey for forming the second burnishing surface
Degree.The raising of the second burnishing surface smooth degree, be advantageous to corrosive liquid to brilliant in the second burnishing surface
Corrosion at boundary, be advantageous to improve the effect that metallographic is shown.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the embodiment of method for displaying metallographic structure one of the present invention.
Embodiment
From background technology, there is crystal orientation display effect not in method for displaying metallographic structure of the prior art
The problem of good.In conjunction with metallographic structure method of the prior art analysis, to its, crystal orientation display effect is bad asks
The reason for topic：
Method for displaying metallographic structure is the surface for corroding metal or alloy by corrosive agent in the prior art, from
And come out the Display of Grain Boundary of metal or alloy.It is rotten but the surface of metal or alloy often has cut
After erosion agent corrosion metal or alloy surface comes out Display of Grain Boundary, the cut on metal or alloy surface is often
Mixed with crystal boundary, so as to influence the display effect of metal or alloy crystal orientation.
To solve the technical problem, the present invention provides a kind of method for displaying metallographic structure, including：
Aluminium-scandium alloy is provided；The surface of the aluminium-scandium alloy is mechanically polished, forms the first burnishing surface；
Electrobrightening is carried out to first burnishing surface by electrolytic polishing liquid, forms the second burnishing surface, the electricity
The electrolysis solute of solution polishing fluid includes perchloric acid；Surface corrosion is carried out to second burnishing surface, formed aobvious
Show face.
Technical solution of the present invention carries out electrobrightening after mechanical polishing, to the first burnishing surface formed,
Electrobrightening is carried out using the electrolytic polishing liquid containing perchloric acid during the electrobrightening.Aluminium-scandium alloy
It can be reacted with perchloric acid.Therefore aluminium-scandium alloy can after electrobrightening in the electrolyte containing perchloric acid
There is good corrosive effect.So electrobrightening, Neng Gouyou are carried out using the electrolytic polishing liquid containing perchloric acid
Effect removes the cut on first burnishing surface, and then improves the smooth journey for forming the second burnishing surface
Degree.The raising of the second burnishing surface smooth degree, be advantageous to corrosive liquid to brilliant in the second burnishing surface
Corrosion at boundary, be advantageous to improve the effect that metallographic is shown.
It is understandable to enable the above objects, features and advantages of the present invention to become apparent, below in conjunction with the accompanying drawings
The specific embodiment of the present invention is described in detail.
With reference to figure 1, the schematic flow sheet of the embodiment of method for displaying metallographic structure one of the present invention is shown.
As shown in figure 1, step S100 is first carried out, there is provided aluminium-scandium alloy.
Specifically, step S100, there is provided include the step of aluminium-scandium alloy：Aluminium-scandium alloy sample is provided.Its
The shape of middle aluminium-scandium alloy sample can be square, cuboid, and cylinder, section are annular or other
Any of analogous shape (including regular shape and irregular shape) cylinder.
The aluminium-scandium alloy sample can use the mode such as handsaw, sawing machine or cutting off machine to be closed from aluminium scandium
Part is cut in golden material and is obtained.The metallographic shows the size of sample to be suitable for subsequent technique
It is advisable.It should be noted that during obtaining the metallographic and showing sample, it should be noted that metallographic is shown
The temperature conditionss of sample, cooled down if necessary during obtaining the metallographic and showing sample with water,
Prevent temperature too high and change the metallographic structure that the metallographic shows sample.
Then, step S200 is performed, the surface of the aluminium-scandium alloy is mechanically polished, forms first
Burnishing surface.
The surface of aluminium-scandium alloy often has natural oxidizing layer.The presence of natural oxidizing layer can hinder crystal boundary
Display.The natural oxidizing layer mechanically polished for removing the aluminium-scandium alloy surface, to expose aluminium scandium
The surface of alloy, form the first burnishing surface.In addition, the mechanical polishing can be also used for improving the aluminium
The smooth degree on scandium alloy surface, to form the first burnishing surface of smooth.
The step of being mechanically polished includes：Institute is carried out to the aluminium-scandium alloy surface by way of polishing
State mechanical polishing.Specifically, the aluminium-scandium alloy surface is being polished with the mistake of realization mechanical polishing
Cheng Zhong, the aluminium-scandium alloy surface is polished using water-based sand paper.
In the present embodiment, when being polished using water-based sand paper the aluminium-scandium alloy surface, use successively
Water-based sand paper from coarse to fine is polished the aluminium-scandium alloy surface, to form first burnishing surface.
So the step of being polished using water-based sand paper is included：Successively using the first water-based sand paper, second water-based
Sand paper and the 3rd water-based sand paper are polished the aluminium-scandium alloy surface.Wherein, described first is water-based
Sand paper includes：The water-based sand paper of 400#, the second water-based sand paper include：The water-based sand paper of 1000#, described
Three water-based sand paper include：The water-based sand paper of 2000#.
Because in the present embodiment, the mechanical polishing is polished and realized using water-based sand paper.Institute
In the step of carrying out the mechanical polishing to the aluminium-scandium alloy surface in a manner of by polishing, made with water
For wetting agent.It should be understood that using water-based sand paper and the way using water as wetting agent is only
One example, in other embodiments of the invention, the wetting agent can also be other liquid such as alcohol.
It should be noted that if polishing time is too short, the face surface to be shown can not be removed completely
Natural oxidizing layer, the display of follow-up crystal boundary can be hindered；If polishing time is oversize, material can be caused
Waste, improve the problem of technology difficulty.Specifically, in the step of being mechanically polished, polishing time
In the range of 5 minutes to 10 minutes.It is water-based using the water-based sand paper of 400# and 1000# in the present embodiment
The time that sand paper is polished is 2.5 minutes, uses the time that the water-based sand paper of 2000# is polished as 5
Minute.
As shown in figure 1, afterwards, step S300 is performed, by electrolytic polishing liquid to first burnishing surface
Electrobrightening is carried out, forms the second burnishing surface, the electrolysis solute of the electrolytic polishing liquid includes perchloric acid.
It should be noted that the method for displaying metallographic structure also includes：Cleaning treatment is carried out, to remove
Caused residue in technical process.Specifically, the cleaning treatment includes：Rinsed using cleaning agent
Mode carries out the cleaning treatment.Wherein described cleaning agent includes water.
In the present embodiment, after mechanical polishing, before electrobrightening, step S250 is performed, to institute
State the first burnishing surface and carry out the first cleaning treatment.First cleaning treatment is included in after cleaning agent flushing,
Processing is dried by drying.
Mechanical polishing is easy to scratch the surface of the aluminium-scandium alloy, and mill is formed on first burnishing surface
Trace.The generation of polishing scratch can influence the smooth degree of first burnishing surface, and the presence of polishing scratch can also make
Subsequently form display surface to deform upon, and then influence follow-up metallographic display effect.The electrobrightening
For removing the polishing scratch formed in mechanical polishing process on the first burnishing surface, so as to further form the
The bright degree of two burnishing surfaces, improve metallographic display effect.In addition, electrobrightening is also prevented from subsequently
Twin is produced on formed display surface and causes the mechanical deformation of display surface, so as to improve the standard that metallographic is shown
Exactness.
Specifically, the electrolytic polishing liquid that the electrobrightening process includes perchloric acid using electrolysis solute is carried out
Electrobrightening.So the step of carrying out electrobrightening includes：The electrolytic polishing liquid for including perchloric acid is provided,
Using the aluminium-scandium alloy as anode, the metal insoluble in the electrolytic polishing liquid is negative electrode；Simultaneously by negative electrode
Immersed with anode in the electrolytic polishing liquid；Direct current is formed between a cathode and an anode, to there is choosing
The anodic solution of selecting property.
During electrobrightening, when being powered, the first burnishing surface surface can produce high thick of resistivity
Property mucous membrane, its thickness is in the first burnishing surface surface distributed and uneven.In the first burnishing surface projection,
The consistence mucosal thickness is smaller, and current density is larger, and dissolving metal is very fast；It is recessed in the first burnishing surface
Part, the consistence mucosal thickness is larger, and current density is smaller, and dissolving metal is slower.In the first polishing
On face, consistence mucosal thickness skewness, cause electric current distribution uneven, the first burnishing surface is not
It is uneven with position dissolving metal speed, so that the first burnishing surface surface roughness reduces, so as to reach
To the purpose polished to the first burnishing surface surface.
During carrying out electrobrightening, the electrolysis solute of used electrolytic polishing liquid includes perchloric acid.
Specifically, pressing percent by volume, the content of perchloric acid is in the range of 5% to 10% in the electrolytic polishing liquid.
Aluminium-scandium alloy can react in electrolytic process with perchloric acid.Therefore aluminium-scandium alloy is in the electricity containing perchloric acid
Can there are good corrosive effect and display effect after electrobrightening in solution liquid.
In addition, the electrolytic polishing liquid also includes electroanalysis solvent, the content of the electroanalysis solvent 90% with
On.Wherein described electroanalysis solvent includes：Ethanol, n-butanol or water.Wherein, by percent by volume, second
The content of alcohol in the range of 60% to 70%, the content of n-butanol in the range of 5% to 10%, water
Content is in the range of 10% to 30%.Electroanalysis solvent can reduce the concentration of perchloric acid in electrolytic polishing liquid,
Limit electrobrightening during between negative electrode and anode direct current size, so as to improve the effect of electrobrightening
Fruit, improve the effect that follow-up metallographic is shown.
Specifically, in the present embodiment, the electrolytic polishing liquid is ethanol, n-butanol, water and perchloric acid
Mixed solution, wherein the volume ratio of ethanol, n-butanol, water and perchloric acid be 6:1:3:1.
If the time of electrobrightening is too short, the smooth degree of the second burnishing surface formed is not good enough, meeting
Hinder the display of crystal orientation；If the time of electrobrightening is oversize, the second burnishing surface can be corroded excessively,
Phenomenon is burnt, the crystal boundary in the second burnishing surface, crystal grain can be caused to damage.In the present embodiment, enter
In the step of row electrobrightening, the time of the electrobrightening is in the range of 40 seconds to 50 seconds.
If the voltage of electrobrightening is too low, the electric current during electrobrightening is too small, electrobrightening
Speed is too slow, and production efficiency can be impacted；If the voltage of electrobrightening is too high, electrobrightening
During electric current it is too big, the speed of electrobrightening is too fast, easily causes formed the second burnishing surface corrosion
Excessively, it is uneven, the damage of crystal boundary and metallographic can be caused.In the present embodiment, electrobrightening is carried out
During, the voltage of electrobrightening is in the range of 25 volts to 30 volts.
With continued reference to Fig. 1, after the second burnishing surface is formed, step S400 is performed, is thrown to described second
Smooth surface carries out surface corrosion, forms display surface.
It should be noted that in the present embodiment, it is described before surface corrosion after electrobrightening
Method for displaying metallographic structure also includes：Step S350 is performed, the second cleaning is carried out to second burnishing surface
Processing, the electrolytic polishing liquid of the second burnishing surface surface residual is removed, after preventing electrolytic polishing liquid from polluting
Continuous technique.
Specifically, in the step of carrying out surface corrosion, table is carried out to second burnishing surface using corrosive liquid
Corrode in face.Because corrosion of the corrosive liquid to the aluminium-scandium alloy generally occurs in grain boundaries, therefore the corruption
The corrosion of liquid is lost, effectively can be distinguished each crystal grain on the second burnishing surface.
Because second burnishing surface is on the basis of mechanical polishing, formed through electrobrightening processing.Electricity
Solution polishing can effectively remove the cut on the first burnishing surface, and the second polishing is formed so as to improve
The smooth degree in face.The raising of the second burnishing surface smooth degree, is advantageous to corrosive liquid pair
The corrosion of grain boundaries in second burnishing surface, be advantageous to improve the effect that metallographic is shown.
Wherein, the corrosive liquid includes corrosive agent, and the corrosive agent includes hydrofluoric acid or nitric acid.Specifically,
It is described by percent by volume in the step of carrying out surface corrosion to second burnishing surface using corrosive liquid
In corrosive liquid, the content of hydrofluoric acid is in the range of 3% to 5%, and the content of nitric acid is in the range of 5% to 10%.
In addition, the corrosive liquid also includes：Corrode solvent, the content of the corrosion solvent is in 85% to 92% model
In enclosing.Wherein, the corrosion solvent includes water.
In the present embodiment, the corrosive liquid be hydrofluoric acid, nitric acid and water mixed solution, wherein hydrofluoric acid,
The volume ratio of nitric acid and water is 1:2:20.
Specifically, after the second cleaning treatment, the corrosive liquid configured is dropped into second burnishing surface
On, so that the corrosive liquid covers second burnishing surface, so as to realize the corruption to second burnishing surface
Erosion, form display surface.
If etching time is too short, the corrosion to second burnishing surface is insufficient, nothing on the display surface
Method fully shows crystal boundary；If etching time is oversize, the excessive corrosion of the second burnishing surface can be caused,
Being oxidized for display surface is easily caused, so as to influence the display effect of crystal boundary.In the present embodiment, table is carried out
In the step of face is corroded, etching time is in the range of 30 seconds to 60 seconds.
It should be noted that after surface corrosion, the structure display methods also includes：Perform
Step 450, the 3rd cleaning treatment is carried out to the display surface.Specifically, the 3rd cleaning treatment includes：
Processing is rinsed to the display surface using cleaning agent；After flushing processing, by being done
Dry processing.
With continued reference to Fig. 1, after surface corrosion forms the display surface, in the present embodiment, the metallographic
Organization display method also includes：Step 500 is performed, the display surface is observed, with to the aluminium scandium
Alloy carries out Metallographic Analysis.Specifically, the step of observing the display surface includes, use is micro-
Mirror is observed the display surface, carries out Metallographic Analysis.
To sum up, technical solution of the present invention is electrolysed after mechanical polishing to the first burnishing surface formed
Polish, electrobrightening is carried out using the electrolytic polishing liquid containing perchloric acid during the electrobrightening.Aluminium
Scandium alloy can react with perchloric acid.Therefore aluminium-scandium alloy electrobrightening in the electrolyte containing perchloric acid
There can be good corrosive effect afterwards.So electrobrightening is carried out using the electrolytic polishing liquid containing perchloric acid,
The cut on first burnishing surface can be effectively removed, and then improves and forms the smooth of the second burnishing surface
Bright degree.The raising of the second burnishing surface smooth degree, be advantageous to corrosive liquid and polished to second
The corrosion of grain boundaries in face, be advantageous to improve the effect that metallographic is shown.
Although present disclosure is as above, the present invention is not limited to this.Any those skilled in the art,
Without departing from the spirit and scope of the present invention, can make various changes or modifications, therefore the guarantor of the present invention
Shield scope should be defined by claim limited range.
Claims (16)
- A kind of 1. method for displaying metallographic structure, it is characterised in that including：Aluminium-scandium alloy is provided；The surface of the aluminium-scandium alloy is mechanically polished, forms the first burnishing surface；Electrobrightening is carried out to first burnishing surface by electrolytic polishing liquid, forms the second burnishing surface, institute Stating the electrolysis solute of electrolytic polishing liquid includes perchloric acid；Surface corrosion is carried out to second burnishing surface, forms display surface.
- 2. method for displaying metallographic structure as claimed in claim 1, it is characterised in that by percent by volume, institute State in electrolytic polishing liquid, the content of perchloric acid is in the range of 5% to 10%.
- 3. method for displaying metallographic structure as claimed in claim 1, it is characterised in that the electrolytic polishing liquid Electroanalysis solvent includes：Ethanol, n-butanol and water.
- 4. method for displaying metallographic structure as claimed in claim 3, it is characterised in that by percent by volume, institute State in electrolytic polishing liquid, the content of ethanol is in the range of 60% to 70%, and the content of n-butanol is 5% To in the range of 10%, the content of water is in the range of 10% to 30%.
- 5. method for displaying metallographic structure as claimed in claim 1, it is characterised in that carry out the step of electrobrightening In rapid, the time of electrobrightening, the voltage of electrobrightening arrived at 25 volts in the range of 40 seconds to 50 seconds In the range of 30 volts.
- 6. method for displaying metallographic structure as claimed in claim 1, it is characterised in that carry out the step of surface corrosion Suddenly include：Surface corrosion is carried out to second burnishing surface using corrosive liquid.
- 7. method for displaying metallographic structure as claimed in claim 6, it is characterised in that using corrosive liquid to described Second burnishing surface was carried out in the step of surface corrosion, and the corrosive liquid includes corrosive agent, the corrosive agent Including：Hydrofluoric acid or nitric acid.
- 8. method for displaying metallographic structure as claimed in claim 7, it is characterised in that the corrosive liquid also includes Corrode solvent, the corrosion solvent is water；In the step of surface corrosion being carried out using corrosive liquid to second burnishing surface, by percent by volume, In the corrosive liquid, the content of hydrofluoric acid is in the range of 3% to 5%, and the content of nitric acid is 5% to 10% In the range of；The content of water is in the range of 85% to 92%.
- 9. method for displaying metallographic structure as claimed in claim 1, it is characterised in that carry out the step of surface corrosion In rapid, etching time is in the range of 30 seconds to 60 seconds.
- 10. method for displaying metallographic structure as claimed in claim 1, it is characterised in that the step mechanically polished Suddenly include：The mechanical polishing is carried out to the aluminium-scandium alloy surface by way of polishing.
- 11. method for displaying metallographic structure as claimed in claim 10, it is characterised in that by way of polishing pair The step of aluminium-scandium alloy surface progress mechanical polishing, includes：Using water-based sand paper to the aluminium Polished on scandium alloy surface.
- 12. method for displaying metallographic structure as claimed in claim 11, it is characterised in that carried out using water-based sand paper The step of polishing, includes：The first water-based sand paper, the second water-based sand paper and the 3rd water-based sand are used successively Paper is polished the aluminium-scandium alloy surface；The first water-based sand paper includes：The water-based sand paper of 400#, the second water-based sand paper include：1000# Water-based sand paper, the 3rd water-based sand paper include：The water-based sand paper of 2000#.
- 13. method for displaying metallographic structure as claimed in claim 10, it is characterised in that by way of polishing pair The aluminium-scandium alloy surface was carried out in the step of mechanical polishing, and wetting agent is used as using water.
- 14. method for displaying metallographic structure as claimed in claim 1, it is characterised in that the step mechanically polished Suddenly include：Polishing time is in the range of 5 minutes to 10 minutes.
- 15. method for displaying metallographic structure as claimed in claim 1, it is characterised in that the metallographic structure is shown Method also includes：Enter between any two step of mechanical polishing, electrobrightening and surface corrosion The one or many cleaning treatments of row.
- 16. method for displaying metallographic structure as claimed in claim 1, it is characterised in that method for displaying metallographic structure Also include：The display surface is observed using microscope.
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| CN110724999A (en) * | 2019-10-23 | 2020-01-24 | 沈阳航空航天大学 | Electrolyte for CoCrNi multi-principal-element alloy with high Cr content and corrosion process |
| CN110835778A (en) * | 2019-11-21 | 2020-02-25 | 哈尔滨工业大学 | Aluminum alloy electrolytic polishing solution and electrolytic polishing method |
| CN111579324A (en) * | 2020-05-26 | 2020-08-25 | 宁波江丰电子材料股份有限公司 | Chromium-titanium alloy treatment method and application thereof in metallographic structure display |
| CN111707513A (en) * | 2020-06-17 | 2020-09-25 | 宁波江丰电子材料股份有限公司 | Preparation method of NiV alloy metallographic specimen |
| CN113514311A (en) * | 2021-06-01 | 2021-10-19 | 先导薄膜材料有限公司 | Display method of pure tin metallographic phase |
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| CN110724999A (en) * | 2019-10-23 | 2020-01-24 | 沈阳航空航天大学 | Electrolyte for CoCrNi multi-principal-element alloy with high Cr content and corrosion process |
| CN110724999B (en) * | 2019-10-23 | 2021-09-28 | 沈阳航空航天大学 | Electrolyte for CoCrNi multi-principal-element alloy with high Cr content and corrosion process |
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