CN109252201A - Magnesium alloy differential arc oxidation electrolyte and preparation method thereof and surface treatment method of Mg alloy - Google Patents
Magnesium alloy differential arc oxidation electrolyte and preparation method thereof and surface treatment method of Mg alloy Download PDFInfo
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- CN109252201A CN109252201A CN201811440167.4A CN201811440167A CN109252201A CN 109252201 A CN109252201 A CN 109252201A CN 201811440167 A CN201811440167 A CN 201811440167A CN 109252201 A CN109252201 A CN 109252201A
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- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/026—Anodisation with spark discharge
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/30—Anodisation of magnesium or alloys based thereon
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Abstract
The present invention provides a kind of magnesium alloy differential arc oxidation electrolyte and preparation method thereof and surface treatment method of Mg alloy, it is related to technical field of electrolyte, including sodium hydroxide, sodium metasilicate, sodium carbonate, sodium molybdate, sodium tetraborate, sodium tartrate, sodium phytate, nanometer polytetrafluoroethylcomposite, titanium nitride and titanium carbide.The present invention provides a kind of magnesium alloy differential arc oxidation electrolyte, above-mentioned electrolyte is met environmental requirements without harmful elements such as Cr, P and F, not will cause environmental pollution.In addition, additionally providing a kind of surface treatment method of Mg alloy, constant current differential arc oxidation can be carried out to Mg alloy surface in micro-arc oxidation electrolyte by the surface treatment method of Mg alloy.
Description
Technical field
The present invention relates to technical field of electrolyte, in particular to a kind of magnesium alloy differential arc oxidation electrolyte and its system
Preparation Method and surface treatment method of Mg alloy.
Background technique
Magnesium alloy is 21 century most development prospect " environmental type material ", low by feat of density, specific strength and
Specific stiffness is high, and damping property is good, machinability and the excellent series of advantages of polishing performance, and in automobile, aerospace is built,
Weapon industry, the fields such as 3C Product have the application potential that can not be despised.For other metal materials, the electricity of magnesium alloy
Negativity is very strong, easily corrodes in a humid environment.Although magnesium alloy is metal material most light in engineer application,
Its poor corrosion resistance is but restricted it in the application.Therefore, the corrosion resistance for enhancing magnesium alloy has become the world
The hot spot of various countries' research.
Improve corrosion stability of magnesium alloy effective way first is that magnesium matrix surface provide one layer of anti-corrosion superficial layer conduct
Corrosion barrier forms effective protection to matrix.Common magnesium alloy surface treatment mainly has differential arc oxidation, chemistry in practice
Conversion film, chemical plating, plating and organic coating.Wherein differential arc oxidation can generate corrosion resistance and wear-resisting property on Mg alloy surface
Excellent ceramic membrane.Compared with other similar techniques, simple process is easy to operate, and the film layer excellent combination property of acquisition is
Presently the most important magnesium alloy surface protective technology.
Differential arc oxidization technique is developed by traditional anodizing technology, breaches the voltage of conventional anodization technology
Working region is promoted to high-voltage region, substantially increases the compactness and wearability of oxidation film by limitation.Influence differential arc oxidation
There are many factor of technology, such as: electrolyte component and concentration, electrical parameter, electrolyte ph, temperature, oxidization time etc..It is wherein electric
Solution liquid component and concentration are an important factor for influencing magnesium alloy differential arc oxidation film performance.Traditional micro-arc oxidation electrolyte is mostly adopted
Use Cr6+, phosphate and fluoride bring serious harm to the mankind and environment.Therefore, Chrome-free, without phosphorus, floride-free differential of the arc oxygen are developed
Polarizing electrode formula of liquid and corresponding technical matters, it has also become the emphasis of magnesium alloy differential arc oxidation research now.
Summary of the invention
The purpose of the present invention is to provide a kind of magnesium alloy differential arc oxidation electrolyte.It can be in magnesium alloy table using the electrolyte
Face generates oxidation film, and the micropore of oxidation film is evenly distributed, roughness is small, corrosion resistance is good, and electrolyte has without Cr, P and F etc.
Evil element, meets environmental requirements, not will cause environmental pollution.
Another object of the present invention is to provide a kind of preparation methods of magnesium alloy differential arc oxidation electrolyte.Pass through the preparation
The magnesium alloy differential arc oxidation electrolyte that method is prepared can generate the excellent oxidation film of corrosion resisting property in Mg alloy surface.
Another object of the present invention is to provide a kind of surface treatment method of Mg alloy.Pass through the Mg alloy surface processing side
Method can carry out constant current differential arc oxidation to Mg alloy surface in micro-arc oxidation electrolyte.
The present invention is implemented as follows:
On the one hand, the present invention provides a kind of magnesium alloy differential arc oxidation electrolyte comprising following components: sodium hydroxide,
Sodium metasilicate, sodium carbonate, sodium molybdate, sodium tetraborate, sodium tartrate, sodium phytate, nanometer polytetrafluoroethylcomposite, titanium nitride and titanium carbide.
In preferred embodiments of the present invention, above-mentioned electrolyte includes: sodium hydroxide 10-80g/L, sodium metasilicate 20-65g/
L, sodium carbonate 2-12g/L, sodium molybdate 2-10g/L, sodium tetraborate 20-60g/L, sodium tartrate 2-10g/L and sodium phytate 2-10g/
L。
In preferred embodiments of the present invention, above-mentioned nanometer polytetrafluoroethylcomposite concentration is 1-6g/L, nanometer polytetrafluoroethylcomposite
Average grain diameter is 100-800nm；Preferably, nanometer polytetrafluoroethylcomposite average grain diameter is 200-600nm.
In preferred embodiments of the present invention, the average grain diameter of above-mentioned titanium nitride is 40-600nm, the average grain of titanium carbide
Diameter is 40-600nm；Preferably, the average grain diameter of titanium nitride is 50-200nm, and the average grain diameter of titanium carbide is 50-200nm.
In preferred embodiments of the present invention, above-mentioned titanium nitride is modified titanium nitride, and modified titanium nitride is in the following way
It is made: surface is carried out in the modified solution containing anionic surfactant and nonionic surfactant using nitridation titanium material
It is made after modification；Preferably, the concentration of modified titanium nitride in the electrolytic solution is 1-8g/L；
Titanium carbide is modified titanium carbide, and modified titanium carbide is made in the following way: using carbonization titanium material containing yin from
It is made after carrying out surface modification treatment in the modified solution of sub- surfactant and nonionic surfactant；Preferably, modified
The concentration of titanium carbide in the electrolytic solution is 1-8g/L.
In preferred embodiments of the present invention, above-mentioned anionic surfactant is lauryl sodium sulfate, dodecyl
Sodium sulfonate or combinations thereof, nonionic surfactant OP-10.Using different anionic surfactant formulas and nonionic
Surfactant package is modified titanium nitride and titanium carbide, and obtained oxide thickness is different, and corrosion resistance is different.
In preferred embodiments of the present invention, mass fraction of the above-mentioned anionic surfactant in modified solution is 3-
5%, mass fraction of the nonionic surfactant in modified solution is 1-3%, nitrogenizes the quality of titanium material and modified solution
Mass ratio than for 1:80-1:200, be carbonized titanium material and modified solution is 1:80-1:200.
In preferred embodiments of the present invention, above-mentioned surface modification treatment condition are as follows: time 2-4h, temperature 40-50
℃.Different surface modification treatment time and treatment temperature, obtained electrolyte is different, in the oxidation that Mg alloy surface generates
Film thickness is different, and corrosion resisting property is different.
On the other hand, the present invention provides a kind of methods for preparing electrolyte comprising: by sodium hydroxide, sodium metasilicate, carbon
Sour sodium, sodium molybdate, sodium tetraborate, sodium tartrate, sodium phytate, nanometer polytetrafluoroethylcomposite, titanium nitride and titanium carbide are mixed with water.
On the other hand, the present invention provides a kind of surface treatment method of Mg alloy comprising following steps:
Mg alloy surface processing step: the magnesium alloy as anode is immersed into such as above-mentioned magnesium alloy differential arc oxidation electrolyte
Middle progress constant current differential arc oxidation.
In preferred embodiments of the present invention, carrying out power supply used in constant current differential arc oxidation is the pulse power.
In preferred embodiments of the present invention, current density 1A/dm2-5A/dm2, frequency range 100Hz-500Hz,
Duty ratio is 10%-30%.
The beneficial effects of the present invention are: a kind of magnesium alloy differential arc oxidation electrolyte provided by the present invention is without Cr, P and F etc.
Harmful element provides application foundation for magnesium alloy differential arc oxidation environment-friendly type, non-harmful industrialization direction.It is closed by providing magnesium
The preparation method of golden micro-arc oxidation electrolyte, the micro-arc oxidation electrolyte prepared can Mg alloy surface generate it is smooth, fine and close,
The oxidation film that adhesive force is strong, corrosion resisting property is excellent.In addition, passing through the present invention also provides a kind of surface treatment method of Mg alloy
This method can generate micro-arc oxidation films in Mg alloy surface.
Specific embodiment
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, according to normal conditions or manufacturer builds
The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase
Product.
Feature and performance of the invention are described in further detail with reference to embodiments.
Embodiment 1
Magnesium alloy differential arc oxidation electrolyte provided in this embodiment includes:
NaOH:60g/L, Na2SiO2: 20g/L, Na2CO3: 4g/L, Na2MoO4: 8g/L, Na2B4O7: 25g/L, tartaric acid
Sodium: 3g/L, sodium phytate: 2g/L；Nanometer polytetrafluoroethylcomposite: 2g/L；Titanium nitride: 6g/L；Titanium carbide: 6g/L.
The electrolyte of the present embodiment the preparation method is as follows:
The average grain diameter of titanium nitride be 50nm, be placed in the lauryl sodium sulfate containing mass fraction 1.5%, 2% ten
Dialkyl sulfonates and 1% OP-10 aqueous solution in carry out surface modification treatment.Specific treatment conditions are as follows: time 4h, it is molten
Liquid temperature is 40 DEG C, and the mass ratio that titanium nitride and above-mentioned anion and nonionic surfactant handle liquor is 1:130.
The average grain diameter of titanium carbide be 100nm, be placed in the lauryl sodium sulfate containing mass fraction 1.5%, 2% ten
Dialkyl sulfonates and 1% OP-10 aqueous solution in carry out surface modification treatment.Specific treatment conditions are as follows: time 4h, it is molten
Liquid temperature is 40 DEG C, and the mass ratio that titanium carbide and above-mentioned anion and nonionic surfactant handle liquor is 1:130.
By sodium hydroxide, sodium metasilicate, sodium carbonate, sodium molybdate, sodium tetraborate, sodium tartrate, sodium phytate, nanometer polytetrafluoroethyl-ne
Alkene, modified titanium nitride and modified titanium carbide and water are made into oxidation electrolyte.
It is as follows that surface treatment method of Mg alloy is carried out using the electrolyte of the present embodiment:
1. plate pre-processes: sample is AZ31 magnesium alloy plate, and sample sandblasting, sand paper or machine is made in magnesium alloy plate
Tool polishing removes the foreign matters such as burr, oxide, remover, the cutting oil on magnesium alloy plate surface, reduces magnesium alloy plate surface
Roughness；Distilled water cleaning, acetone ultrasonic cleaning, distilled water cleaning, drying are successively carried out after polishing, obtain magnesium alloy
Sample, it is spare.
2. magnesium alloy differential arc oxidation: magnesium alloy sample is carried out differential arc oxidation in above-mentioned electrolyte.It is yin with stainless steel
Pole, magnesium alloy are anode, and in the case where revolving speed is the stirring condition of 700rpm, constant current differential arc oxidation, electrolyte temperature is controlled at 20 DEG C,
Time is 20min.Power supply used is the pulse power, and pulse frequency and duty ratio are continuously adjustable, current density 5A/dm2, frequency
Rate 500Hz, duty ratio 10%.The oxidation film thicknesses of layers of preparation is 24.6 μm, and roughness is 1.454 μm.
Test experience:
By the magnesium alloy without differential arc oxidation and the magnesium alloy Jing Guo micro-arc oxidation treatment in 3.5% sodium chloride solution
Do Tafel polarization curve and carry out corrosion evaluation, as a result can obtain: the Corrosion Behaviors of Magnesium Alloys current potential without differential arc oxidation is -1.548V, from
Corrosion electric current density is 4.169 × 10-5A/cm2, the Corrosion Behaviors of Magnesium Alloys current potential by micro-arc oxidation treatment is -1.286V, corrosion
Current potential has shuffled 0.262V, and corrosion current density is 2.865 × 10-7A/cm2。
Embodiment 2
Magnesium alloy differential arc oxidation electrolyte provided in this embodiment includes:
NaOH:15g/L, Na2SiO2: 50g/L, Na2CO3: 12g/L, Na2MoO4: 3g/L, Na2B4O7: 55g/L, tartaric acid
Sodium: 8g/L, sodium phytate: 4g/L；Nanometer polytetrafluoroethylcomposite: 1g/L；Titanium nitride: 7g/L；Titanium carbide: 3g/L.
The electrolyte of the present embodiment the preparation method is as follows:
The average grain diameter of titanium nitride be 150nm, be placed in the lauryl sodium sulfate containing mass fraction 3%, 0.5% ten
Dialkyl sulfonates, 1.5% OP-10 aqueous solution in carry out surface modification treatment.Specific treatment conditions are as follows: time 3h,
Temperature is 40 DEG C, and the mass ratio that titanium nitride and above-mentioned anion and nonionic surfactant handle liquor is 1:100.
The average grain diameter of titanium carbide is 50nm, is placed in the OP- of the dodecyl sodium sulfate containing mass fraction 3% and 2%
Surface modification treatment is carried out in 10 aqueous solutions.Specific treatment conditions are as follows: time 2h, solution temperature be 50 DEG C, titanium carbide with
The mass ratio of above-mentioned anion and nonionic surfactant processing liquor is 1:130.
By sodium hydroxide, sodium metasilicate, sodium carbonate, sodium molybdate, sodium tetraborate, sodium tartrate, sodium phytate, nanometer polytetrafluoroethyl-ne
Alkene, modified titanium nitride and modified titanium carbide and water are made into oxidation electrolyte.
It is as follows that surface treatment method of Mg alloy is carried out using the electrolyte of the present embodiment:
1. plate pre-processes: sample is AZ31 magnesium alloy plate, and sample sandblasting, sand paper or machine is made in magnesium alloy plate
Tool polishing removes the foreign matters such as burr, oxide, remover, the cutting oil on magnesium alloy plate surface, reduces magnesium alloy plate surface
Roughness；Distilled water cleaning, acetone ultrasonic cleaning, distilled water cleaning, drying are successively carried out after polishing, obtain magnesium alloy
Sample, it is spare.
2. magnesium alloy differential arc oxidation: magnesium alloy sample is carried out differential arc oxidation in above-mentioned electrolyte.It is yin with stainless steel
Pole, magnesium alloy are anode, in the case where revolving speed is the stirring condition of 700rpm, constant current differential arc oxidation, and magnesium alloy differential arc oxidation electrolyte
Temperature control is at 30 DEG C, time 30min.Power supply used is the pulse power, and pulse frequency and duty ratio are continuously adjustable, electric current
Density is 1A/dm2, frequency 200Hz, duty ratio 30%.The oxidation film thicknesses of layers of preparation is 19.6 μm, and roughness is
0.988μm。
Test experience:
By the magnesium alloy without differential arc oxidation and the magnesium alloy Jing Guo micro-arc oxidation treatment in 3.5% sodium chloride solution
Do Tafel polarization curve and carry out corrosion evaluation, as a result can obtain: the Corrosion Behaviors of Magnesium Alloys current potential without differential arc oxidation is -1.548V, from
Corrosion electric current density is 4.169 × 10-5A/cm2, the Corrosion Behaviors of Magnesium Alloys current potential by micro-arc oxidation treatment is -1.316V, corrosion
Current potential has shuffled 0.232V, and corrosion current density is 4.485 × 10-7A/cm2。
Embodiment 3
Magnesium alloy differential arc oxidation electrolyte provided in this embodiment includes:
NaOH:35g/L, Na2SiO2: 30g/L, Na2CO3: 5g/L, Na2MoO4: 2g/L, Na2B4O7: 25g/L, tartaric acid
Sodium: 3g/L, sodium phytate: 5g/L；Nanometer polytetrafluoroethylcomposite: 3g/L；Titanium nitride: 3g/L；Titanium carbide: 8g/L.
The electrolyte of the present embodiment the preparation method is as follows:
The average grain diameter of titanium nitride is 100nm, is placed in the OP- of the lauryl sodium sulfate containing mass fraction 4%, 2%
Surface modification treatment is carried out in 10 aqueous solutions.Specific treatment conditions are as follows: time 4h, temperature be 40 DEG C, titanium nitride with it is above-mentioned
The mass ratio of anion and nonionic surfactant processing liquor is 1:180.
The average grain diameter of titanium carbide be 50nm, be placed in the lauryl sodium sulfate containing mass fraction 3%, 1% 12
Sodium alkyl sulfonate and 3% OP-10 aqueous solution in carry out surface modification treatment.Specific treatment conditions are as follows: time 2h, solution
Temperature is 50 DEG C, and the mass ratio that titanium carbide and above-mentioned anion and nonionic surfactant handle liquor is 1:160.
By sodium hydroxide, sodium metasilicate, sodium carbonate, sodium molybdate, sodium tetraborate, sodium tartrate, sodium phytate, nanometer polytetrafluoroethyl-ne
Alkene, modified titanium nitride and modified titanium carbide and water are made into oxidation electrolyte.
It is as follows that surface treatment method of Mg alloy is carried out using the electrolyte of the present embodiment:
1. plate pre-processes: sample is AZ31 magnesium alloy plate, and sample sandblasting, sand paper or machine is made in magnesium alloy plate
Tool polishing removes the foreign matters such as burr, oxide, remover, the cutting oil on magnesium alloy plate surface, reduces magnesium alloy plate surface
Roughness；Distilled water cleaning, acetone ultrasonic cleaning, distilled water cleaning, drying are successively carried out after polishing, obtain magnesium alloy
Sample, it is spare.
2. magnesium alloy differential arc oxidation: magnesium alloy sample is carried out differential arc oxidation in above-mentioned electrolyte.It is yin with stainless steel
Pole, magnesium alloy are anode, and in the case where revolving speed is the stirring condition of 700rpm, constant current differential arc oxidation, electrolyte temperature is controlled at 30 DEG C,
Time is 15min.Power supply used is the pulse power, and pulse frequency and duty ratio are continuously adjustable, current density 3A/dm2, frequency
Rate 200Hz, duty ratio 10%.The oxidation film thicknesses of layers of preparation is 21.4 μm, and roughness is 1.068 μm.
Test experience:
By the magnesium alloy without differential arc oxidation and the magnesium alloy Jing Guo micro-arc oxidation treatment in 3.5% sodium chloride solution
Do Tafel polarization curve and carry out corrosion evaluation, as a result can obtain: the Corrosion Behaviors of Magnesium Alloys current potential without differential arc oxidation is -1.548V, from
Corrosion electric current density is 4.169 × 10-5A/cm2, the Corrosion Behaviors of Magnesium Alloys current potential by micro-arc oxidation treatment is -1.364V, corrosion
Current potential has shuffled 0.184V, and corrosion current density is 3.675 × 10-7A/cm2。
The embodiment of the present invention carries out the anionic surfactant of different ratio to the titanium nitride and titanium carbide of different-grain diameter
With the surface modification treatment of nonionic surfactant, modified nitrogen is prepared by different disposal time and treatment temperature
Change titanium and titanium carbide.Magnesium alloy immerses in micro-arc oxidation electrolyte, in different pulse current densities, frequency and duty ratio and
Under the conditions of different electrolyte temperatures and oxidization time, the oxidation smooth, fine and close, adhesive force is strong and corrosion resisting property is excellent is generated
Film.
A kind of magnesium alloy differential arc oxidation electrolyte provided by the present invention is that magnesium alloy is micro- without harmful elements such as Cr, P and F
Arc oxidation environment-friendly type, non-harmful industrialization direction provide application foundation.
The foregoing is merely the preferred embodiment of the present invention, are not intended to restrict the invention, for this field
For technical staff, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any
Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of magnesium alloy differential arc oxidation electrolyte, which is characterized in that include the following components: sodium hydroxide, sodium metasilicate, carbonic acid
Sodium, sodium molybdate, sodium tetraborate, sodium tartrate, sodium phytate, nanometer polytetrafluoroethylcomposite, titanium nitride and titanium carbide.
2. a kind of magnesium alloy differential arc oxidation electrolyte according to claim 1, which is characterized in that the electrolyte includes:
Sodium hydroxide 10-80g/L, sodium metasilicate 20-65g/L, sodium carbonate 2-12g/L, sodium molybdate 2-10g/L, sodium tetraborate 20-60g/L,
Sodium tartrate 2-10g/L and sodium phytate 2-10g/L.
3. a kind of magnesium alloy differential arc oxidation electrolyte according to claim 1, which is characterized in that nanometer polytetrafluoroethylcomposite is dense
Degree is 1-6g/L, and nanometer polytetrafluoroethylcomposite average grain diameter is 100-800nm；Preferably, the nanometer polytetrafluoroethylcomposite is averaged grain
Diameter is 200-600nm.
4. a kind of magnesium alloy differential arc oxidation electrolyte according to claim 1, which is characterized in that the average grain diameter of titanium nitride
For 40-600nm, the average grain diameter of titanium carbide is 40-600nm；Preferably, the average grain diameter of the titanium nitride is 50-200nm,
The average grain diameter of the titanium carbide is 50-200nm.
5. a kind of magnesium alloy differential arc oxidation electrolyte according to claim 1, which is characterized in that the titanium nitride is to be modified
Titanium nitride, the modified titanium nitride are made in the following way: using nitridation titanium material containing anionic surfactant and non-
It is made after carrying out surface modification treatment in the modified solution of ionic surface active agent；Preferably, the modified titanium nitride is described
Concentration in electrolyte is 1-8g/L；
The titanium carbide is modified titanium carbide, and the modified titanium carbide is made in the following way: being contained using carbonization titanium material
It is made after carrying out surface modification treatment in the modified solution of anionic surfactant and nonionic surfactant；Preferably,
Concentration of the modified titanium carbide in the electrolyte is 1-8g/L.
6. a kind of magnesium alloy differential arc oxidation electrolyte according to claim 5, which is characterized in that the anionic surface is living
Property agent be lauryl sodium sulfate, dodecyl sodium sulfate or combinations thereof, the nonionic surfactant be OP-10.
7. a kind of magnesium alloy differential arc oxidation electrolyte according to claim 6, which is characterized in that the anionic surface is living
Property mass fraction of the agent in the modified solution be 3-5%, the nonionic surfactant is in the modified solution
Mass fraction is 1-3%, nitridation titanium material and the modified solution mass ratio be 1:80-1:200, carbonization titanium material with it is described
The mass ratio of modified solution is 1:80-1:200.
8. according to a kind of described in any item magnesium alloy differential arc oxidation electrolyte of claim 5-7, which is characterized in that surface is modified
Treatment conditions are as follows: time 2-4h, temperature are 40-50 DEG C.
9. a kind of method for preparing electrolyte, characterized in that it comprises: by sodium hydroxide, sodium metasilicate, sodium carbonate, sodium molybdate,
Sodium tetraborate, sodium tartrate, sodium phytate, nanometer polytetrafluoroethylcomposite, titanium nitride and titanium carbide are mixed with water.
10. a kind of surface treatment method of Mg alloy, which is characterized in that it includes the following steps:
Mg alloy surface processing step: the magnesium alloy as anode is immersed into such as the described in any item magnesium alloys of claim 1-8
Constant current differential arc oxidation is carried out in micro-arc oxidation electrolyte.
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| CN114959835A (en) * | 2022-04-25 | 2022-08-30 | 湖北工程学院 | Magnesium alloy surface treatment method |
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| CN114959835A (en) * | 2022-04-25 | 2022-08-30 | 湖北工程学院 | Magnesium alloy surface treatment method |
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