CN112111773A - Magnesium alloy workpiece micro-arc oxidation surface treatment method - Google Patents
Magnesium alloy workpiece micro-arc oxidation surface treatment method Download PDFInfo
- Publication number
- CN112111773A CN112111773A CN202010816809.7A CN202010816809A CN112111773A CN 112111773 A CN112111773 A CN 112111773A CN 202010816809 A CN202010816809 A CN 202010816809A CN 112111773 A CN112111773 A CN 112111773A
- Authority
- CN
- China
- Prior art keywords
- electrolyte
- arc oxidation
- micro
- box body
- magnesium alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
- C25D11/026—Anodisation with spark discharge
Abstract
The invention discloses a magnesium alloy workpiece micro-arc oxidation surface treatment method which mainly comprises four steps of micro-arc oxidation, water washing treatment, sealing treatment and drying treatment, solves the problem of low efficiency of magnesium alloy workpiece micro-arc oxidation surface treatment in the prior art, further improves the corrosion resistance of the magnesium alloy workpiece after surface treatment, and expands the application range and the service life of the magnesium alloy workpiece.
Description
Technical Field
The invention belongs to the field of machining, and relates to a surface treatment method for a magnesium alloy workpiece, in particular to a micro-arc oxidation surface treatment method for the magnesium alloy workpiece.
Background
The micro-arc oxidation is a novel surface treatment technology with simple process, high efficiency, green and environmental protection. It is a ceramic film layer mainly made of matrix metal oxide and grown in situ on the surface of non-ferrous metals of magnesium, aluminium and titanium and their alloy by means of instantaneous high-temp. and high-pressure action produced by arc discharge
The micro-arc oxidation treatment capacity is strong, workpieces with various complex shapes can be treated, uniform ceramic membranes can be generated on the inner surface and the outer surface of a test piece, the adaptability to materials is wide, and besides aluminum, magnesium, titanium and alloys thereof, ceramic membrane layers can also be grown on the surfaces of metals such as thallium, niobium and the like and alloys thereof.
The ceramic film and the substrate grow in situ after being combined in a metallurgical mode, the ceramic film and the substrate are tightly combined, the film and the substrate have better bonding force and are not easy to peel off, the ceramic film has better comprehensive performance, such as good corrosion resistance, wear resistance, high hardness and the like, and in addition, films with other special functions of heat insulation, catalysis, bacteriostasis, biological affinity and the like can be prepared.
As a new, environment-friendly, efficient and energy-saving surface treatment technology, the micro-arc oxidation technology is widely applied to various fields of production and life, such as modern industrial fields of aviation, aerospace, ships, automobiles, weapons, light-duty machinery, petrochemical industry, chemical and chemical engineering, electronic engineering, instruments and meters, medical treatment and health, and the like, because the prepared ceramic coating has the advantages of high strength, wear resistance, corrosion resistance, electrical insulation and the like.
Since the end of the 19 th century, the consumption of metal materials has increased due to the rapid progress of human civilization, and some metal mineral resources have gradually tended to be exhausted. For example, the exploitation of copper, lead and zinc can only be maintained for decades, and the exploitation of aluminum and iron can only be maintained for 100-300 years. Magnesium is one of the most abundant elements on the earth, and besides the content of the earth crust surface layer being 2.3%, the content of magnesium in salt lakes and oceans is very considerable, so that magnesium is inexhaustible. At present, magnesium alloy is becoming the third major metal engineering material after steel and aluminum, and the magnesium alloy has poor corrosion resistance, so that the application of the magnesium alloy in structural materials is greatly limited. The corrosion prevention treatment of magnesium alloys is an important subject in the research of magnesium alloys. Aiming at solving the problems, by means of the micro-arc oxidation technology, people can grow a porous ceramic film layer with firm binding force, heat resistance, wear resistance and corrosion resistance in situ on the metal surface of magnesium alloy and the like by the technology, thereby effectively overcoming the prior defects, opening up a brand-new development space for national defense and aerospace industry which uses a large amount of light alloy, but the prior micro-arc oxidation treatment technology still has certain defects on the long-term corrosion resistance of workpieces, can not adapt to the long-term corrosive environment of oceans and the like, and limits the application range of the magnesium alloy workpieces in ship manufacturing.
Disclosure of Invention
The invention aims to solve the problems in the prior art, provides a magnesium alloy workpiece micro-arc oxidation surface treatment method, solves the problem of low efficiency of magnesium alloy workpiece micro-arc oxidation surface treatment in the prior art, further improves the corrosion resistance of the magnesium alloy workpiece after surface treatment, expands the application range and the service life of the magnesium alloy workpiece, and can be realized by the following technical scheme:
a magnesium alloy workpiece micro-arc oxidation surface treatment method comprises the following treatment steps:
(1) micro-arc oxidation, namely placing the magnesium alloy workpiece with a clean surface in a micro-arc oxidation treatment device filled with electrolyte solution, connecting the magnesium alloy workpiece and the positive electrode of a pulse power supply under the electrolyte by using a magnesium wire, and connecting the negative electrode of the pulse power supply by using a stainless steel plate; wherein the pulse power supply is set with a pulse width of 10-50, a maximum current of less than or equal to 1300A, a maximum voltage of less than or equal to 600V, a micro-arc oxidation treatment time of 40-90 min, and a temperature: the temperature is less than or equal to 50 ℃, and the power output frequency is 100-;
(2) and (3) water washing treatment: washing by adopting a flowing water washing mode for 1-5 min;
(3) sealing treatment: treating for 2-3 min by adopting sealing liquid in the sealing tank;
(4) and (3) drying treatment: drying at 80-100 deg.C for at least 15-30 min;
further, the electrolyte solution in the step (1) comprises the following components: sodium silicate: 8g/l, potassium hydroxide:
5g/l, potassium fluoride: 5g/l and the balance of pure water.
Further preferably, the electrolyte solution is prepared in the step (1): calculating required AR-grade sodium silicate, potassium hydroxide and potassium fluoride according to the volume of the oxidation tank and the formula specified in Table 2; 3/4 volumes of pure water are added into the tank; dissolving sodium silicate, potassium hydroxide and potassium fluoride with pure water, slowly adding into the tank, and adding pure water to a specified volume.
Further, the sealing liquid in the step (3) adopts a DSE-30 sealing agent.
Further, in step (1) micro arc oxidation treatment device, including reserve box, electrolyte box and negative plate, there is the supporting leg spare box below four corners department through bolted connection, there is the electrolyte box spare box top through the screw connection, the bottom is provided with in the electrolyte box the negative plate, the negative plate with the electrolyte box passes through the draw-in groove and connects, the electrolyte box with be connected with the conveyer pipe between the reserve box, the conveyer pipe tip has the pump body through threaded connection, the pump body with reserve box passes through the screw connection, there is level sensor through the screw connection on the electrolyte box inner wall. Can be through the inside electrolyte volume of level sensor real-time detection electrolyte box, then take out inside the electrolyte box through the electrolyte of the pump body in with reserve box, carry out real-time supply to electrolyte, save the trouble of manual supply electrolyte, it is practical convenient.
Further, before the step (1), a pretreatment step is further included: polishing a magnesium alloy workpiece, and then removing oil, washing and drying the magnesium alloy workpiece for later use by using an oil removal agent;
further, the step (3) is followed by a post-processing step: and taking out the magnesium alloy sample subjected to micro-arc oxidation from the electrolytic bath, washing the sample with distilled water for multiple times to remove electrolyte remained on the surface of the sample, blow-drying the sample with a blower, placing the sample into a sample bag, sealing and storing the sample bag, and making a test record on the sample bag by using a label for subsequent characterization test and performance test.
Drawings
FIG. 1: a schematic diagram of the connection relationship of the electrodes during micro-arc oxidation treatment (wherein each part is a simplified schematic diagram, and the specific structure and shape are not limited);
FIG. 2: a front view of the micro-arc oxidation treatment device;
FIG. 3: the main section view of the spare box body and the electrolyte box body in the micro-arc oxidation treatment device;
FIG. 4: the micro-arc oxidation treatment device is characterized by comprising a support frame, an anode plate, an electric push rod and a hook.
Detailed Description
The following is a detailed description of the present invention with reference to the drawings, but the present invention is not limited to the following detailed embodiments.
Test materials: the magnesium alloy micro-arc oxidation test material is AZ31 magnesium alloy, and the main chemical components of the magnesium alloy micro-arc oxidation test material are shown in Table 1:
TABLE 1 AZ31 magnesium alloy chemical composition
| Element(s) | Al | Zn | Mn | Mg |
| Content (wt.%) | 3 | 1 | 0.2 | Balance of |
Table 2: chemical material table for test
| Name of Material | Minimum purity requirement and specification |
| 1) Sodium silicate | Purity: analytically pure (namely AR grade) |
| 2) Potassium hydroxide | Purity: analytically pure (namely AR grade) |
| 3) Potassium fluoride: | purity: not less than 99.0 percent |
| 4) DSE-30 sealant | The manufacturer: shenzhen di sien science and technology limited |
The chemical materials for the samples selected in the embodiment are all selected according to the minimum purity requirement, and in the actual treatment, the higher the purity is, the better the treatment effect is.
A pretreatment step:
(1) polishing: sequentially grinding magnesium alloy samples through 230#, 400#, 800# and 1200# water grinding sandpaper from coarse to fine until the surfaces have no clear scratches under a metallographic microscope;
(2) oil removal and cleaning: placing the workpiece in an oil removing device, wherein the oil removing device is filled with an oil removing agent, such as acetone or other oil removing agents, and the oil removing time of the workpiece in the oil removing device is at least 1min until oil stains are removed; taking the workpiece out of the oil removal device, and cleaning the workpiece in a hot water tank for at least 1min, wherein the temperature in the hot water tank is set to be 60-80 ℃; then taking the workpiece out of the cold water tank for running water washing for at least 1min, wherein the hot water and the cold water used in the step adopt deionized water, so that the washing effect is better, and the subsequent workpiece surface treatment is more facilitated;
(3) drying: after washing, draining, and drying by drying devices such as a dryer for later use.
The embodiment comprises the pretreatment step, and the pretreatment step can be selectively adopted or omitted according to the cleaning degree of the workpiece to be treated in the actual micro-arc oxidation treatment process, so that the surface of the workpiece to be treated before the micro-arc oxidation treatment is in a completely clean state.
Micro-arc oxidation treatment:
(1) micro-arc oxidation, as shown in figure 1, the magnesium alloy workpiece 20 with clean surface is placed in a micro-arc oxidation treatment device 22 filled with electrolyte solution 21, the magnesium alloy workpiece 20 under the electrolyte is connected with the anode of a pulse power supply 24 by a magnesium conducting wire, and the stainless steel plate 23 is connected with the cathode of the pulse power supply 24;
wherein the pulse power supply is set with a pulse width of 10-50, a maximum current of less than or equal to 1300A, a maximum voltage of less than or equal to 600V, a micro-arc oxidation treatment time of 40-90 min, and a temperature: the temperature is less than or equal to 50 ℃, and the power output frequency is 100-; wherein, the electrolyte solution comprises the following components: sodium silicate: 8g/l, potassium hydroxide: 5g/l, potassium fluoride: 5g/l and the balance of pure water.
Wherein, the electrolyte solution configuration mode: calculating required AR-grade sodium silicate, potassium hydroxide and potassium fluoride according to the volume of the oxidation tank and the formula specified in Table 2; 3/4 volumes of pure water are added into the tank; dissolving sodium silicate, potassium hydroxide and potassium fluoride by using pure water, slowly adding the dissolved sodium silicate, potassium hydroxide and potassium fluoride into the tank respectively, and supplementing the pure water to a specified volume;
(2) and (3) water washing treatment: in the embodiment, a flowing water washing mode is adopted for washing;
(3) sealing treatment: treating for 2-3 min in a closed tank by adopting a sealing liquid at normal temperature; in the embodiment, silanization sealing treatment is adopted, and the specific sealing liquid adopts DSE-30;
(4) and (3) drying treatment: drying at 80-100 deg.C for 15-30 min;
the method can realize the treatment of the surface of the workpiece, can be used for treating the magnesium alloy workpiece with a complex structure, and is convenient to treat.
As shown in FIGS. 2-4, the micro-arc oxidation treatment device designed by the company can be used for micro-arc oxidation treatment, the micro-arc oxidation treatment device in the embodiment comprises a spare box body 1, an electrolyte box body 3 and a cathode plate 11, supporting legs 2 are connected at four corners of the lower part of the spare box body 1 through bolts, the electrolyte box body 3 is connected above the spare box body 1 through screws, the cathode plate 11 is arranged at the bottom part in the electrolyte box body 3, the cathode plate 11 is connected with the electrolyte box body 3 through a clamping groove, a conveying pipe 13 is connected between the electrolyte box body 3 and the spare box body 1, the end part of the conveying pipe 13 is connected with a pump body 12 through threads, the pump body 12 is connected with the spare box body 1 through screws, a liquid level sensor 14 is connected on one inner wall of the electrolyte box body, then the electrolyte in the spare box body 1 is pumped into the electrolyte box body 3 through the pump body 12, the electrolyte is supplemented in real time, the trouble of manually supplementing the electrolyte is saved, and the device is practical and convenient.
In this embodiment, a liquid feeding pipe 15 is disposed on one side wall of the standby box 1, a liquid feeding valve 16 is disposed on the liquid feeding pipe 15, the liquid feeding pipe 15 is in threaded connection with the standby box 1, the liquid feeding pipe 15 is in threaded connection with the liquid feeding valve 16, and standby electrolyte can be added into the standby box 1 through the liquid feeding pipe 15.
In this embodiment, there is a PLC controller 18 screwed to one side wall of the electrolyte tank 3, and there is a partition plate 4 screwed to the other side wall of the electrolyte tank 3, and there is a support frame 5 screwed to the partition plate 4, and the support frame 5 is an L-shaped structure, and the partition plate 4 is made of plastic, so as to perform an insulating function.
In the embodiment, an anode plate 17 is connected to the lower portion of the support frame 5 through a screw, an electric push rod 6 is arranged below the anode plate 17, the electric push rod 6 is connected with the anode plate 17 through a screw, a hook 7 is pressed below the electric push rod 6 through a screw, the micro-arc oxidation material is hung by the hook 7, and the micro-arc oxidation material can be released into the electrolyte box 3 by the electric push rod 6.
In this embodiment, one side above the cathode plate 11 is connected with the first cathode frame 8 through the clamping groove, one side of the first cathode frame 8 is provided with the second cathode frame 9, one side of the second cathode frame 9 is provided with the third cathode frame 10, the second cathode frame 9 and the third cathode frame 10 are connected with the cathode plate 11 through the clamping groove, and the first cathode frame 8, the second cathode frame 9 and the third cathode frame 10 are used for placing materials requiring micro-arc oxidation inside.
In this embodiment, the first cathode frame 8 is a square structure, the second cathode frame 9 is a cylindrical structure, the third cathode frame 10 is a triangular prism structure, liquid permeable holes are formed in the first cathode frame 8, the second cathode frame 9 and the third cathode frame 10, and micro-arc oxidation treatment can be performed on materials of different shapes through the first cathode frame 8, the second cathode frame 9 and the third cathode frame 10, so that the inner surface shape of the material is matched with the outer surface shape of the material to be treated, and the uniformity and quality of micro-arc oxidation of the surfaces of the materials of different shapes can be improved.
In the embodiment, when the micro-arc oxidation treatment device is used, standby electrolyte is added into the standby box body 1 through the liquid adding pipe 15, then an external power supply is connected with the PLC control, the liquid level sensor 14 can detect the amount of the electrolyte in the electrolyte box body 3 in real time, then the information is fed back to the PLC controller 18, the comparison is carried out with a preset value in the PLC controller 18, when the preset value is lower than the preset value, the pump body 12 is controlled to be started, the electrolyte in the standby box body 1 is pumped into the electrolyte box body 3 through the conveying pipe 13, the electrolyte is supplemented in real time, the trouble of manually supplementing the electrolyte is saved, the device is practical and convenient, then materials needing micro-arc oxidation in corresponding shapes are hung on the hook 7, the PLC controller 18 controls the electric push rod 6 to act, and the materials needing maintenance oxidation are released to corresponding inner cavities of the first cathode frame 8, the second cathode frame 9 and the third cathode frame 10, the micro-arc oxidation treatment is carried out on the materials with different shapes, so that the shape of the inner surface of the material is matched with the shape of the outer surface of the material to be treated, and the uniformity and the quality of the micro-arc oxidation of the surfaces of the materials with different shapes can be improved.
Post-treatment:
and taking out the magnesium alloy sample subjected to micro-arc oxidation from the electrolytic bath, washing the sample with distilled water for multiple times to remove electrolyte remained on the surface of the sample, blow-drying the sample with a blower, placing the sample into a sample bag, sealing and storing the sample bag, and making a test record on the sample bag by using a label for subsequent characterization test and performance test.
Selecting 4 different magnesium alloy parts subjected to micro-arc oxidation treatment for testing, wherein 4 repeated testing pieces are arranged on each product part, 16 testing parts are tested in total, and the specific testing items and results are as follows:
characterization test and performance test:
(1) and (3) thickness testing: adopting a TT280 high-precision layer thickness gauge to test the thickness of the workpiece: calibrating the surface of a sample workpiece, randomly selecting 3 points on the surface of the prepared micro-arc oxidation coating of each part for testing, and then calculating the average value as the thickness value of the coating; and the thickness value accuracy is ensured by comparing the sectional view of the micro-arc oxidation film layer with the sectional view of the micro-arc oxidation film layer tested by a subsequent scanning electron microscope. The average oxide film thickness test was 19.30 μm.
(2) Cross cut test
In order to test the anti-stripping capability of the coating on the base material, a cross-shaped lattice pattern is cut on the coating by using a proper tool, the cut is made to the base material, a hairbrush is used for brushing for five times in the diagonal direction, an adhesive tape is used for being attached to the cut and pulled open, a magnifying glass is used for checking a lattice area, the micro-arc oxidation surface treatment method of the aluminum alloy workpiece is used for sample detection, the cut edges of the sample 1, the sample 2, the sample 3 and the sample 4 are all completely smooth, the lattice edge does not strip, and the lattice edge belongs to the 5B grade of 0/ASTM in the ISO grade.
(3) Testing the film layer binding force:
the film layer binding force of the sample is tested by adopting a tape bonding method (GBT4957-2003), and the test result shows that all the sample tapes are bonded without falling off.
(4) And (3) testing the corrosion resistance of the film layer:
the corrosion resistance of the film layer is detected by adopting a high-low temperature alternating damp-heat test, and the specific test process and requirements are as follows in part 9 of an GJB150.9A-2009 military equipment laboratory environment experimental method: the damp-heat test is executed, and the damp-heat test condition parameters are as follows: the high temperature and high humidity stage is 60 ℃, and the relative moderate degree is 95 percent; the low-temperature and high-humidity stage is 30 ℃ and is relatively moderate to 95 percent; the test results are as follows:
| part number | 5 cycle period (1200h) | 10 cycle periods (2400h) |
| Sample 1(4 pieces) | No corrosion was observed | No corrosion was observed |
| Sample 2(4 pieces) | No corrosion was observed | No corrosion was observed |
| Sample 3(4 pieces) | No corrosion was observed | No corrosion was observed |
| Sample 4(4 pieces) | No corrosion was observed | No corrosion was observed |
The embodiments described herein are merely illustrative of the spirit of the invention and various modifications, additions and substitutions may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (9)
1. A magnesium alloy workpiece micro-arc oxidation surface treatment method is characterized by comprising the following treatment steps:
firstly, micro-arc oxidation, namely placing a magnesium alloy workpiece with a clean surface in a micro-arc oxidation treatment device filled with an electrolyte solution, connecting the magnesium alloy workpiece and the anode of a pulse power supply under the electrolyte by using a magnesium wire, and connecting the cathode of the pulse power supply by using a stainless steel plate; wherein the pulse power supply is set with a pulse width of 10-50, a maximum current of less than or equal to 1300A, a maximum voltage of less than or equal to 600V, a micro-arc oxidation treatment time of 40-90 min, and a temperature: the temperature is less than or equal to 50 ℃, and the power output frequency is 100-;
step two, water washing treatment: washing by adopting a flowing water washing mode for 1-5 min;
step three, sealing treatment: treating for 2-3 min by adopting sealing liquid in the sealing tank;
step four, drying treatment: the drying temperature is 80-100 ℃, and the treatment time is at least 15-30 min.
2. The magnesium alloy workpiece micro-arc oxidation surface treatment method according to claim 1, wherein the electrolyte solution in the first step comprises the following components: sodium silicate: 8g/l, potassium hydroxide: 5g/l, potassium fluoride: 5g/l and the balance of pure water.
3. The magnesium alloy workpiece micro-arc oxidation surface treatment method according to claim 3, wherein in the first step, the electrolyte solution is configured in a way that: sodium silicate, potassium hydroxide and potassium fluoride according to the volume of the oxidation tank and the required AR level; 3/4 volumes of pure water are added into the tank; dissolving sodium silicate, potassium hydroxide and potassium fluoride with pure water, slowly adding into the tank, and adding pure water to a specified volume.
4. The magnesium alloy workpiece micro-arc oxidation surface treatment method according to claim 1, characterized in that the sealing liquid in step three adopts DSE-30 sealing agent.
5. The magnesium alloy workpiece micro-arc oxidation surface treatment method according to claim 1, characterized in that in the first step, the micro-arc oxidation treatment device comprises a spare box body, an electrolyte box body and a cathode plate, wherein supporting legs are connected to four corners below the spare box body through bolts, the electrolyte box body is connected to the upper portion of the spare box body through screws, the cathode plate is arranged at the inner bottom of the electrolyte box body, the cathode plate is connected with the electrolyte box body through a clamping groove, a conveying pipe is connected between the electrolyte box body and the spare box body, the end portion of the conveying pipe is connected with a pump body through threads, the pump body is connected with the spare box body through screws, and a liquid level sensor is connected to one inner wall of the electrolyte box body through. Can be through the inside electrolyte volume of level sensor real-time detection electrolyte box, then take out the electrolyte box inside with the electrolyte in the reserve box through the pump body, carry out real-time supply to electrolyte.
6. The aluminum alloy workpiece micro-arc oxidation surface treatment method according to claim 5, characterized in that a liquid feeding pipe is arranged on one side wall of the standby box body, a liquid feeding valve is arranged on the liquid feeding pipe, the liquid feeding pipe is in threaded connection with the standby box body, the liquid feeding pipe is in threaded connection with the liquid feeding valve, and standby electrolyte can be fed into the standby box body through the liquid feeding pipe.
7. The aluminum alloy workpiece micro-arc oxidation surface treatment method according to claim 5, wherein a PLC is connected to one side wall of the electrolyte box body through screws, a partition plate is connected to the other side wall of the electrolyte box body through screws, a support frame is connected to the partition plate through screws, the support frame is of an L-shaped structure, and the partition plate is made of plastic.
8. The magnesium alloy workpiece micro-arc oxidation surface treatment method according to claim 1, characterized in that the first step further comprises a pretreatment step before: and polishing the magnesium alloy workpiece, and then removing oil, washing and drying for later use by using an oil removal agent.
9. The magnesium alloy workpiece micro-arc oxidation surface treatment method according to claim 1, characterized in that the third step is followed by a post-treatment step: and taking the magnesium alloy sample subjected to micro-arc oxidation out of the electrolytic bath, washing with distilled water for many times to remove electrolyte remained on the surface of the sample, blow-drying with a blower, putting into a sample bag, sealing and storing, and marking on the sample bag with a label.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010816809.7A CN112111773A (en) | 2020-08-14 | 2020-08-14 | Magnesium alloy workpiece micro-arc oxidation surface treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010816809.7A CN112111773A (en) | 2020-08-14 | 2020-08-14 | Magnesium alloy workpiece micro-arc oxidation surface treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112111773A true CN112111773A (en) | 2020-12-22 |
Family
ID=73804140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010816809.7A Pending CN112111773A (en) | 2020-08-14 | 2020-08-14 | Magnesium alloy workpiece micro-arc oxidation surface treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112111773A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060011491A1 (en) * | 2004-07-14 | 2006-01-19 | Bruce Logan | Bio-electrochemically assisted microbial reactor that generates hydrogen gas and methods of generating hydrogen gas |
| CN103789810A (en) * | 2014-01-15 | 2014-05-14 | 哈尔滨东安发动机（集团）有限公司 | Method for preparing micro-arc oxidation ceramic film layer on surface of magnesium alloy |
| CN105624764A (en) * | 2016-02-26 | 2016-06-01 | 广东威铝铝业股份有限公司 | Preparation method for micro-arc oxidation of ceramic membrane on magnesium alloy |
| CN207193414U (en) * | 2017-07-21 | 2018-04-06 | 何起峰 | A kind of device for preparing porous anodic aluminium oxide |
| CN207685386U (en) * | 2017-12-07 | 2018-08-03 | 安徽新合富力科技有限公司 | A kind of die casting anodic oxidation device |
| CN209227085U (en) * | 2018-11-13 | 2019-08-09 | 北京艾路浦科技发展有限公司 | A kind of alloy surface differential arc oxidization processing unit |
| CN111155157A (en) * | 2020-03-10 | 2020-05-15 | 南京长江电子信息产业集团有限公司 | Aluminum waveguide anticorrosion treatment method |
-
2020
- 2020-08-14 CN CN202010816809.7A patent/CN112111773A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060011491A1 (en) * | 2004-07-14 | 2006-01-19 | Bruce Logan | Bio-electrochemically assisted microbial reactor that generates hydrogen gas and methods of generating hydrogen gas |
| CN103789810A (en) * | 2014-01-15 | 2014-05-14 | 哈尔滨东安发动机（集团）有限公司 | Method for preparing micro-arc oxidation ceramic film layer on surface of magnesium alloy |
| CN105624764A (en) * | 2016-02-26 | 2016-06-01 | 广东威铝铝业股份有限公司 | Preparation method for micro-arc oxidation of ceramic membrane on magnesium alloy |
| CN207193414U (en) * | 2017-07-21 | 2018-04-06 | 何起峰 | A kind of device for preparing porous anodic aluminium oxide |
| CN207685386U (en) * | 2017-12-07 | 2018-08-03 | 安徽新合富力科技有限公司 | A kind of die casting anodic oxidation device |
| CN209227085U (en) * | 2018-11-13 | 2019-08-09 | 北京艾路浦科技发展有限公司 | A kind of alloy surface differential arc oxidization processing unit |
| CN111155157A (en) * | 2020-03-10 | 2020-05-15 | 南京长江电子信息产业集团有限公司 | Aluminum waveguide anticorrosion treatment method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Abdel-Gawad et al. | Characterization and corrosion behavior of anodized aluminum alloys for military industries applications in artificial seawater | |
| Xiang et al. | Effects of current density on microstructure and properties of plasma electrolytic oxidation ceramic coatings formed on 6063 aluminum alloy | |
| Chang et al. | Influence of electric parameters on MAO of AZ91D magnesium alloy using alternative square-wave power source | |
| CN102758234B (en) | Method for preparing aluminum alloy anti-corrosion layer and electrolyte used in method | |
| Wang et al. | Electrolytic MgO/ZrO2 duplex-layer coating on AZ91D magnesium alloy for corrosion resistance | |
| Guo et al. | Corrosion behavior of micro-arc oxidation coating on AZ91D magnesium alloy in NaCl solutions with different concentrations | |
| CN101161866B (en) | Method for preparing magnesium and magnesium alloy surface coating | |
| CN101660188B (en) | Method for embedding nano metal at inside and surface of anodic oxide film hole of aluminum and alloy of aluminum | |
| US6379523B1 (en) | Method of treating surface of aluminum blank | |
| Peng et al. | Preparation of anodic films on 2024 aluminum alloy in boric acid-containing mixed electrolyte | |
| CN109267136A (en) | The method of titanium bolt surface ceramic based on growth in situ | |
| Yan et al. | Anodizing of AZ91D magnesium alloy using environmental friendly alkaline borate-biphthalate electrolyte | |
| CN107855254A (en) | A kind of preparation method of the corrosion-resistant organic composite coating of Mg alloy surface | |
| CN110424029A (en) | A kind of anti-corrosion self-cleaning super-hydrophobic coating in metal surface and its preparation method and application | |
| KR100695999B1 (en) | Anodizing method for matal surface using high-frequency pluse | |
| CN103938254A (en) | Preparation method of connecting corrosion-resisting micro-arc oxidation layer on surface of magnesium alloy | |
| Song et al. | Performance of composite coating on AZ31B magnesium alloy prepared by anodic polarization and electroless electrophoresis coating | |
| CN112126961A (en) | Micro-arc oxidation surface treatment method for aluminum alloy workpiece | |
| Zhang et al. | Effects of electric parameters on corrosion resistance of anodic coatings formed on magnesium alloys | |
| CN105316741B (en) | A kind of method for carrying out surface by micro-arc oxidation processing to aluminium alloy using grading current | |
| CN101792919A (en) | Anodic oxidation treating fluid containing corrosion inhibition additive | |
| CN106637377B (en) | Nickel-base alloy electrolytic polishing liquid and its polishing method | |
| CN101570875B (en) | Method for forming brown ceramic membrane on surface of Mg-Li alloy | |
| CN112111773A (en) | Magnesium alloy workpiece micro-arc oxidation surface treatment method | |
| Li et al. | Effects of polyvinylidene fluoride sealing on micro-arc oxidation coating of 7075 aluminum alloy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |