CN113913893A - Preparation method of 7050 aluminum alloy surface micro-arc oxidation ceramic film layer - Google Patents
Preparation method of 7050 aluminum alloy surface micro-arc oxidation ceramic film layer Download PDFInfo
- Publication number
- CN113913893A CN113913893A CN202111360662.6A CN202111360662A CN113913893A CN 113913893 A CN113913893 A CN 113913893A CN 202111360662 A CN202111360662 A CN 202111360662A CN 113913893 A CN113913893 A CN 113913893A
- Authority
- CN
- China
- Prior art keywords
- aluminum alloy
- arc oxidation
- micro
- electrolyte
- koh
- 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.)
- Granted
Links
- 238000007745 plasma electrolytic oxidation reaction Methods 0.000 title claims abstract description 31
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 25
- 239000000919 ceramic Substances 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- HPEUJPJOZXNMSJ-UHFFFAOYSA-N Methyl stearate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC HPEUJPJOZXNMSJ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000003792 electrolyte Substances 0.000 claims abstract description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 14
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 13
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 13
- 229940051841 polyoxyethylene ether Drugs 0.000 claims abstract description 12
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 12
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims abstract description 11
- 239000011734 sodium Substances 0.000 claims abstract description 11
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 10
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 10
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims abstract description 10
- 239000007864 aqueous solution Substances 0.000 claims abstract description 7
- CAMHHLOGFDZBBG-UHFFFAOYSA-N epoxidized methyl oleate Natural products CCCCCCCCC1OC1CCCCCCCC(=O)OC CAMHHLOGFDZBBG-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000002791 soaking Methods 0.000 claims abstract description 4
- 239000010935 stainless steel Substances 0.000 claims abstract description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 6
- 229910020489 SiO3 Inorganic materials 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 15
- 230000007797 corrosion Effects 0.000 abstract description 13
- 229910000420 cerium oxide Inorganic materials 0.000 abstract description 4
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 abstract description 4
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 8
- 229910021389 graphene Inorganic materials 0.000 description 5
- 239000004115 Sodium Silicate Substances 0.000 description 4
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 229910001388 sodium aluminate Inorganic materials 0.000 description 4
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 4
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 4
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RZXLPPRPEOUENN-UHFFFAOYSA-N Chlorfenson Chemical compound C1=CC(Cl)=CC=C1OS(=O)(=O)C1=CC=C(Cl)C=C1 RZXLPPRPEOUENN-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004299 exfoliation Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- VCWJPGQFVGJLQJ-UHFFFAOYSA-N methyl octadecanoate;sodium Chemical compound [Na].CCCCCCCCCCCCCCCCCC(=O)OC VCWJPGQFVGJLQJ-UHFFFAOYSA-N 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention belongs to the technical field of preparation of aluminum alloy corrosion-resistant layers, and discloses a preparation method of a 7050 aluminum alloy surface micro-arc oxidation ceramic film layer, which comprises the following steps: performing surface micro-arc oxidation on 7050 aluminum alloy by using a direct current pulse micro-arc oxidation device, soaking 7050 aluminum alloy serving as an anode in an electrolyte, taking a stainless steel container with a cooling system as a cathode, wherein the micro-arc oxidation time is 20-30min, and the current density is 5-10A/dm2(ii) a The electrolyte is Na2SiO35-15g/L of KOH, 2-5g/L of KOH, 2-10g/L of carbon nano tube and CeO2Is 2-8g/L aqueous solution of 2-5g/L methyl stearate polyoxyethylene ether sodium sulfonate. The cerium oxide and the carbon nano tube are added into the electrolyte, the cerium oxide and the carbon nano tube can play a role in synergistic effect, and the corrosion resistance and the wear resistance of the prepared ceramic film are both obviously improved.
Description
Technical Field
The invention belongs to the technical field of preparation of aluminum alloy corrosion-resistant layers, and particularly relates to a preparation method of a 7050 aluminum alloy surface micro-arc oxidation ceramic film layer.
Background
7050 high-strength aluminum alloy has the advantages of low density, high strength, good processability and good weldability, is an important light-weight high-strength structural material, and is widely used in the fields of aviation industry, civil industry and the like. However, since the 7xxx series aluminum alloys are active chemically, pitting, intergranular corrosion, stress corrosion, and exfoliation corrosion occur, and their poor corrosion resistance greatly limits their further applications. In recent years, a great deal of research has been conducted on improving the corrosion resistance of aluminum and aluminum alloys thereof, and it has been found that surface modification by inhibiting contact with the external environment is a good method.
Chinese patent document CN102758234A discloses a method for preparing an aluminum alloy corrosion-resistant layer and an electrolyte used in the method, the micro-arc oxidation electrolyte is composed of deionized water, sodium silicate, sodium hexametaphosphate, sodium hydroxide and sodium aluminate, wherein the contents of the sodium silicate, the sodium hexametaphosphate, the sodium hydroxide and the sodium aluminate are as follows: 10-20 g/L of sodium silicate, 5-15g/L of sodium hexametaphosphate, 2-4 g/L of sodium hydroxide, 2-5g/L of sodium aluminate and the balance of deionized water; sodium silicate, sodium hexametaphosphate, sodium hydroxide and sodium aluminate are all granular. The composite salt system is adopted, and the prepared ceramic film layer is uniform and compact and has good resistance to various corrosive media. The ceramic membrane grows in situ on the matrix, is metallurgically bonded with the matrix, has good bonding force, and can effectively isolate the matrix from the environment, so that the corrosion resistance of the matrix is greatly improved. Due to the characteristics of the micro-arc oxidation technology, the formed ceramic film layer is divided into an inner layer compact layer and an outer layer loose layer, and the inner layer compact layer mainly provides protection for the base material. But the electrolyte system still has room for improvement, and the corrosion resistance of the aluminum alloy is expected to be further improved.
Disclosure of Invention
In order to further improve the corrosion resistance of the aluminum alloy, the invention provides a preparation method of a 7050 aluminum alloy surface micro-arc oxidation ceramic film layer.
In order to realize the purpose of the invention, the adopted technical scheme is as follows:
a preparation method of a 7050 aluminum alloy surface micro-arc oxidation ceramic film layer comprises the following steps: performing surface micro-arc oxidation on 7050 aluminum alloy by using a direct current pulse micro-arc oxidation device, soaking 7050 aluminum alloy serving as an anode in an electrolyte, taking a stainless steel container with a cooling system as a cathode, wherein the micro-arc oxidation time is 20-30min, and the current density is 5-10A/dm2；
The electrolyte is Na2SiO35-15g/L of KOH, 2-5g/L of KOH, 2-10g/L of carbon nano tube and CeO2Is 2-8g/L aqueous solution of 2-5g/L methyl stearate polyoxyethylene ether sodium sulfonate.
Preferably, Na is contained in the electrolyte2SiO38-12g/L, 3-4g/L KOH, 5-8g/L carbon nanotube and CeO24-6g/L of stearic acid methyl ester polyoxyethylene ether sodium sulfonate and 3-4g/L of stearic acid methyl ester polyoxyethylene ether sodium sulfonate.
In order to obtain more proper thickness and porosity, the micro-arc oxidation time is 25min and the current density is 7A/dm2。
Compared with the prior art, the invention has the following beneficial effects:
1. cerium oxide and carbon nano tubes are added into the electrolyte, and the cerium oxide and the carbon nano tubes can play a synergistic effect, so that the corrosion resistance of the prepared ceramic film is obviously improved.
2. The wear resistance of the prepared ceramic film layer is improved.
Detailed Description
The present invention is not limited to the following embodiments, and those skilled in the art can implement the present invention in other embodiments according to the disclosure of the present invention, or make simple changes or modifications on the design structure and idea of the present invention, and fall into the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is described in more detail below with reference to the following examples:
the micro-arc oxidation method in the following embodiment is as follows: performing surface micro-arc oxidation on 7050 aluminum alloy by using DC pulse micro-arc oxidation device, soaking 7050 aluminum alloy as anode in electrolyte, taking stainless steel container with cooling system as cathode, wherein micro-arc oxidation time can be 20-30min (25 min in the following examples), and current density can be 5-10A/dm2(Current density of 7A/dm in the following examples2)。
Example 1
The electrolyte used for micro-arc oxidation treatment is Na2SiO35g/L, 2g/L KOH, 2g/L carbon nanotube, CeO2Is 2g/L aqueous solution of 2g/L sodium methyl stearate polyoxyethylene ether sulfonate.
Example 2
The electrolyte used for micro-arc oxidation treatment is Na2SiO310g/L, 4g/L KOH, 7g/L carbon nanotube, CeO25g/L of methyl stearate polyoxyethylene ether sulfonic acid3g/L sodium salt solution.
Example 3
The electrolyte used for micro-arc oxidation treatment is Na2SiO315g/L, 5g/L KOH, 10g/L carbon nanotube, CeO28g/L of aqueous solution of 5g/L of methyl stearate polyoxyethylene ether sodium sulfonate.
Comparative example 1
The electrolyte used for micro-arc oxidation treatment is Na2SiO315g/L, 5g/L KOH, 10g/L carbon nano tube and 5g/L methyl stearate polyoxyethylene ether sodium sulfonate aqueous solution.
Comparative example 2
The electrolyte used for micro-arc oxidation treatment is Na2SiO315g/L of KOH, 5g/L of CeO28g/L of aqueous solution of 5g/L of methyl stearate polyoxyethylene ether sodium sulfonate.
Comparative example 3
The electrolyte used for micro-arc oxidation treatment is Na2SiO310g/L of KOH, 2g/L of CeO24g/L, 3g/L sodium dodecyl benzene sulfonate (used for ensuring the full dispersion of graphene), and 10g/L graphene concentration.
Comparative example 4
The electrolyte used for micro-arc oxidation treatment is Na2SiO315g/L of KOH, 5g/L of CeO2The concentration of the graphene is 8g/L, the concentration of the sodium dodecyl benzene sulfonate is 3g/L (used for ensuring the full dispersion of the graphene), and the concentration of the graphene is 10 g/L.
The prepared sample was subjected to a frictional wear test using a HT-600 type high temperature frictional wear tester, and the mass before and after wear was recorded, and the difference between the mass before and after wear was the mass loss, which is detailed in table 1.
The potentiodynamic polarization curve is used for testing the self-corrosion potential and the self-corrosion current of the sample, and the details are shown in the table 1.
TABLE 1
| Amount of mass loss | Ecorr(V vs.SCE) | icorr(A/cm2) | |
| Example 1 | 1.75mg | -0.61 | 4.26×10-10 |
| Example 2 | 1.68mg | -0.53 | 1.39×10-10 |
| Example 3 | 1.60mg | -0.57 | 3.93×10-10 |
| Comparative example 1 | 1.81mg | -0.75 | 3.47×10-9 |
| Comparative example 2 | 2.13mg | -0.94 | 2.33×10-8 |
| Comparative example 3 | 1.92mg | -0.77 | 3.10×10-9 |
| Comparative example 4 | 2.32 | -1.05 | 2.11×10-8 |
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and their concepts should be equivalent or changed within the technical scope of the present invention.
Claims (3)
1. A preparation method of a 7050 aluminum alloy surface micro-arc oxidation ceramic film layer comprises the following steps: performing surface micro-arc oxidation on 7050 aluminum alloy by using a direct current pulse micro-arc oxidation device, soaking 7050 aluminum alloy serving as an anode in an electrolyte, taking a stainless steel container with a cooling system as a cathode, wherein the micro-arc oxidation time is 20-30min, and the current density is 5-10A/dm2；
The electrolyte is Na2SiO35-15g/L of KOH, 2-5g/L of KOH, 2-10g/L of carbon nano tube and CeO2Is 2-8g/L aqueous solution of 2-5g/L methyl stearate polyoxyethylene ether sodium sulfonate.
2. The method for preparing the micro-arc oxidized ceramic film layer on the surface of the 7050 aluminum alloy according to claim 1, wherein the method comprises the following steps: na in electrolyte2SiO38-12g/L, 3-4g/L KOH, 5-8g/L carbon nanotube and CeO24-6g/L of stearic acid methyl ester polyoxyethylene ether sodium sulfonate and 3-4g/L of stearic acid methyl ester polyoxyethylene ether sodium sulfonate.
3. The 7050 aluminum alloy surface micro-arc oxidized ceramic of claim 1The preparation method of the film layer is characterized in that: the micro-arc oxidation time is 25min, and the current density is 7A/dm2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111360662.6A CN113913893B (en) | 2021-11-17 | 2021-11-17 | Preparation method of 7050 aluminum alloy surface micro-arc oxidation ceramic film layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111360662.6A CN113913893B (en) | 2021-11-17 | 2021-11-17 | Preparation method of 7050 aluminum alloy surface micro-arc oxidation ceramic film layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113913893A true CN113913893A (en) | 2022-01-11 |
| CN113913893B CN113913893B (en) | 2023-03-21 |
Family
ID=79246741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111360662.6A Active CN113913893B (en) | 2021-11-17 | 2021-11-17 | Preparation method of 7050 aluminum alloy surface micro-arc oxidation ceramic film layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113913893B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115896554A (en) * | 2022-10-14 | 2023-04-04 | 山东创新金属科技有限公司 | Aluminum alloy material for high-strength corrosion-resistant automobile structural member and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170029959A1 (en) * | 2015-07-27 | 2017-02-02 | Schlumberger Technology Corporation | Property enhancement of surfaces by electrolytic micro arc oxidation |
| CN108707943A (en) * | 2018-05-27 | 2018-10-26 | 中南大学 | A kind of micro-arc oxidation electrolyte and its application on preparing high surface hardness aluminium alloy plate |
| KR20190050526A (en) * | 2017-11-03 | 2019-05-13 | 창원대학교 산학협력단 | Method of forming oxide film using plasma electrolytic oxidation |
| CN111676499A (en) * | 2020-07-30 | 2020-09-18 | 华南理工大学 | Hydrogen-resistant coating based on cathode plasma electrolytic deposition and preparation method thereof |
| CN112899754A (en) * | 2021-01-27 | 2021-06-04 | 太原科技大学 | Electrolyte for preparing self-sealing hole micro-arc oxidation coating on surface of magnesium alloy and preparation method of coating |
-
2021
- 2021-11-17 CN CN202111360662.6A patent/CN113913893B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170029959A1 (en) * | 2015-07-27 | 2017-02-02 | Schlumberger Technology Corporation | Property enhancement of surfaces by electrolytic micro arc oxidation |
| KR20190050526A (en) * | 2017-11-03 | 2019-05-13 | 창원대학교 산학협력단 | Method of forming oxide film using plasma electrolytic oxidation |
| CN108707943A (en) * | 2018-05-27 | 2018-10-26 | 中南大学 | A kind of micro-arc oxidation electrolyte and its application on preparing high surface hardness aluminium alloy plate |
| CN111676499A (en) * | 2020-07-30 | 2020-09-18 | 华南理工大学 | Hydrogen-resistant coating based on cathode plasma electrolytic deposition and preparation method thereof |
| CN112899754A (en) * | 2021-01-27 | 2021-06-04 | 太原科技大学 | Electrolyte for preparing self-sealing hole micro-arc oxidation coating on surface of magnesium alloy and preparation method of coating |
Non-Patent Citations (2)
| Title |
|---|
| YAKUP YÜREKTÜRK ET AL.: "Characterization of micro arc oxidized 6082 aluminum alloy in an electrolyte containing carbon nanotubes", 《SURFACE & COATINGS TECHNOLOGY》 * |
| 郭豫鹏 等: "CeO2对2A12铝合金微弧氧化膜层组织", 《稀有金属材料与工程》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115896554A (en) * | 2022-10-14 | 2023-04-04 | 山东创新金属科技有限公司 | Aluminum alloy material for high-strength corrosion-resistant automobile structural member and preparation method thereof |
| CN115896554B (en) * | 2022-10-14 | 2024-02-20 | 山东创新金属科技有限公司 | High-strength corrosion-resistant aluminum alloy material for automobile structural member and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113913893B (en) | 2023-03-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109989090A (en) | A method of corrosion stability of magnesium alloy film layer is prepared using superslide surface | |
| CN113913893B (en) | Preparation method of 7050 aluminum alloy surface micro-arc oxidation ceramic film layer | |
| KR101195458B1 (en) | Method for treating the surface of metal | |
| Moutarlier et al. | An electrochemical approach to the anodic oxidation of Al 2024 alloy in sulfuric acid containing inhibitors | |
| CN104911670B (en) | The hole sealing agent of oxidation aluminium film and the middle temperature method for sealing of low nickel | |
| CN109930147B (en) | Lead bipolar plate and preparation method thereof | |
| CN102041541A (en) | Method for preparing magnesium alloy micro-arc oxidation film by silicon dioxide sol-impregnation micro-arc oxidation method | |
| RU2011113544A (en) | METAL ANODE OF OXYGEN EMISSION OPERATING AT HIGH DENSITY OF CURRENT FOR ELECTROLYZERS FOR ALUMINUM RESTORATION | |
| Hultquist et al. | Self-repairing metal oxides | |
| CN104087801B (en) | A kind of Corrosion-resistant magnesia alloy and improve the method for its corrosion resistance | |
| CN106400079A (en) | Preparation method of multiple super-hydrophobic composite film layers on aluminium alloy surface | |
| Peng et al. | Preparation of anodic films on 2024 aluminum alloy in boric acid-containing mixed electrolyte | |
| CN102703948B (en) | Preparation method for ceramic coating of aluminum alloy surface | |
| CN108624925A (en) | A kind of composite preparation process of Mg alloy surface super-drainage structure | |
| CN106757261B (en) | A kind of aluminium material surface oxide ceramic membrane and the compound wear-and corrosion-resistant coating and preparation method thereof of zeolite membrane | |
| Zhu et al. | Oxygen evolution and porous anodic alumina formation | |
| CN103147112B (en) | A kind of electrolytic solution and for the preparation of the purposes of nuclear fuel rod zirconium alloy cladding micro-arc oxidation films and method | |
| CN110965104B (en) | Normal-temperature sealing treatment method for Al-Cu-Li alloy anodic oxide film | |
| JP4660760B2 (en) | Method for forming anodized film of aluminum and / or aluminum alloy and anodized film formed by the method | |
| CN110093649B (en) | Aluminum alloy end plate coating, preparation method thereof, end plate containing aluminum alloy end plate coating and fuel cell | |
| Xue et al. | Corrosion resistance of Ni-Y2O3 composite coating prepared by electrodeposition under ultrasonic condition | |
| CN101435081B (en) | No-voltage chemical membrane preparing and low voltage electrochemical membrane preparing combined process for magnesium alloy surface | |
| CN114703529B (en) | Magnesium alloy with super-hydrophobic MAO-LDH composite membrane layer and preparation method thereof | |
| WO2020217668A1 (en) | Metal porous body, electrode for electrolysis, hydrogen production device, fuel cell, and method for producing metal porous body | |
| CN108796574A (en) | Metal material anode oxidation method and device |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20220111 Assignee: Jiangsu Gongwei Electronic Technology Co.,Ltd. Assignor: CHANGZHOU University Contract record no.: X2023980053014 Denomination of invention: Preparation method of micro arc oxidation ceramic film on the surface of 7050 aluminum alloy Granted publication date: 20230321 License type: Common License Record date: 20231220 |
|
| EE01 | Entry into force of recordation of patent licensing contract |