CN106702455A - Micro-arc oxidation method for surface of aluminum alloy - Google Patents
Micro-arc oxidation method for surface of aluminum alloy Download PDFInfo
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- CN106702455A CN106702455A CN201611220245.0A CN201611220245A CN106702455A CN 106702455 A CN106702455 A CN 106702455A CN 201611220245 A CN201611220245 A CN 201611220245A CN 106702455 A CN106702455 A CN 106702455A
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- arc oxidation
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- aluminum alloy
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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
- C25D11/026—Anodisation with spark discharge
-
- 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
- C25D11/10—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing organic acids
-
- 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
- C25D11/16—Pretreatment, e.g. desmutting
Abstract
The invention discloses a micro-arc oxidation method for the surface of an aluminum alloy. The micro-arc oxidation method comprises the following operation steps: (1), the aluminum alloy is placed in a derusting and degreasing liquid to be soaked for 15-20 min, is taken out to be subjected to surface cleaning, and is placed into a drying box for drying; and (2), the dried aluminum alloy is placed into an electrolytic cell to be subjected to micro-arc oxidation treatment, wherein the to-be-treated aluminum alloy is taken as an anode, and 316L stainless steel is taken as a cathode. By adopting the micro-arc oxidation treatment provided by the invention, the surface of the manufactured aluminum alloy has good abrasion-resistance and corrosion-resistance, and has certain electrical insulating property, so that quality of the aluminum alloy is greatly improved.
Description
Technical field
The invention belongs to aluminium alloy preparation field, and in particular to a kind of micro-arc oxidation of aluminum alloy surface processing method.
Background technology
Aluminium alloy is most widely used class non-ferrous metal structural material in industry, in Aeronautics and Astronautics, automobile, machinery
Widely applied in manufacture, ship and chemical industry.Industrial economy is developed rapidly, to the demand day of Welded structural member
Benefit increases, and the Research on Weldability for enabling aluminum alloy to also is goed deep into therewith.Current aluminium alloy is using most alloys.Micro-arc oxidation process
The substantial amounts of instantaneous discharge of middle generation punctures, and the growth to coating plays an important role so that the coating of generation has fire
Mountain pass shape characteristic.In literature research 7075Al alloy micro-arc oxidation process, 1.3 μm from 1min of the diameter of coating surface micropore
Increase to
2.4 μm of 30min, surface roughness increases with the increase of thickness, and the increasing over time of volcanic crater area density
Plus and reduce.The differential arc oxidation that Matykina have studied Ti alloys has similar action rule, forms interior in micro-arc oxidation process
The hole of portion's insertion.Simultaneously in micro-arc oxidation process, the lower metallic matrix of high electric field effect in electrolyte environment, the matter in electrolyte
Enter into oxide layer, the material entered into electrolyte plays an important role to oxidizing process, is incorporated into oxide layer
In material important influence is produced to the final performance of film layer.Now with developing rapidly for metal-processing industry, to various gold
The quality of metal products has requirement higher.Therefore a kind of more scientific and effective micro-arc oxidation of aluminum alloy surface method is needed.
The content of the invention
In order to solve the above problems, the present invention provides a kind of micro-arc oxidation of aluminum alloy surface processing method.
The present invention is achieved by the following technical solutions.
A kind of micro-arc oxidation of aluminum alloy surface method, including following operating procedure：
（1）Aluminium alloy is put into after soaking 8-10min in rust cleaning degreasing fluid, takes out and clean surface, be put into drying in baking oven, wherein
Rust cleaning degreasing fluid is made up of the component of following weight portion：16-20 parts of ethoxy urea, sodium allylsulfonate 15-17 parts, the poly- Malaysia of hydrolysis
Acid anhydrides 6-8 parts, EDTA11-13 parts, 5-7 parts of N- acyl sarcosinates, methyl triacetoxysilane 1-3 parts, water 120-140
Part；
（2）Aluminium alloy after drying is put into electrolytic cell carries out differential arc oxidation treatment, using pending aluminium alloy as anode,
316L stainless steels are made up as negative electrode, wherein micro-arc oxidation electrolyte of the component of following weight portion：Propylene glycol monomethyl ether 40-45
Part, sodium pyrophosphate 12-15 parts, calcium phosphate 15-20 parts, isomeric alcohol polyethenoxy ether 6-8 parts, diphenylphosphoric acid 1-3 parts, TMSPi
2-4 parts, water 130-150 parts.
Specifically, above-mentioned steps（2）In the condition of differential arc oxidation be：Using constant current controlling pattern, the electricity of positive negative sense
Stream is than being 1:1, positive dutycycle and negative sense dutycycle are respectively 50%, and current density is 5-7A/dm2, the time of differential arc oxidation treatment
It is 35-45min.
Specifically, aoxidized using ultrasonic assistant during above-mentioned differential arc oxidation is processed, the frequency of wherein ultrasonic wave is
35-40KHz。
Technical scheme more than, the beneficial effects of the invention are as follows：
The differential arc oxidation provided using the present invention is processed, and can cause that obtained aluminum alloy surface has excellent wearability, corrosion resistant
Corrosion, and with certain electrical insulating property, greatly improve the quality of aluminium alloy.The rust cleaning oil removing liquid energy that the present invention is provided
It is effective to remove the grease and rusty stain of aluminum alloy surface, and one layer of active surface is uniformly formed in aluminum alloy surface, it is follow-up
Differential arc oxidation lay the foundation；Ethoxy urea and sodium allylsulfonate act synergistically, and can effectively shorten the degreasing and rust removal time,
Degreasing and rust removal efficiency can reach 99.0% after 10min；Isomeric alcohol polyethenoxy ether and diphenylphosphoric acid act synergistically, can be effective
Lifting differential arc oxidation treatment efficiency, the consistency of the obtained differential arc oxidation coating of lifting greatly reduces coating of knowing clearly
Stomatal number, improves wearability, corrosion resistance and the inoxidizability of coating；TMSPi is commonly used as lithium-ion battery electrolytes
Additive, lifts the efficiency of electrolysis, suppresses hydrionic electric discharge, but in using it for micro-arc oxidation electrolyte, can be effectively
The speed of oxidation is lifted, shortens oxidization time, and then saved time cost and power cost.
Specific embodiment
Following examples are used for illustrating the present invention, but can not be used for limiting the scope of the present invention, the reality used in embodiment
The condition of applying can be for further adjustments according to the condition of producer, and unaccounted implementation condition is usually conventional laboratory conditions.
Embodiment 1
A kind of micro-arc oxidation of aluminum alloy surface method, including following operating procedure：
（1）Aluminium alloy is put into after soaking 8min in rust cleaning degreasing fluid, takes out and clean surface, drying in baking oven is put into, wherein removing
Rust degreasing fluid is made up of the component of following weight portion：16 parts of ethoxy urea, 15 parts of sodium allylsulfonate, 6 parts of HPMA,
EDTA11 parts, 5 parts of N- acyl sarcosinates, 1 part of methyl triacetoxysilane, 120 parts of water；
（2）Aluminium alloy after drying is put into electrolytic cell carries out differential arc oxidation treatment, using pending aluminium alloy as anode,
316L stainless steels are made up as negative electrode, wherein micro-arc oxidation electrolyte of the component of following weight portion：40 parts of propylene glycol monomethyl ether, Jiao
12 parts of sodium phosphate, 15 parts of calcium phosphate, 6 parts of isomeric alcohol polyethenoxy ether, 1 part of diphenylphosphoric acid, 2 parts of TMSPi, 130 parts of water.
Specifically, above-mentioned steps（2）In the condition of differential arc oxidation be：Using constant current controlling pattern, the electricity of positive negative sense
Stream is than being 1:1, positive dutycycle and negative sense dutycycle are respectively 50%, and current density is 5A/dm2, differential arc oxidation treatment time be
35min。
Specifically, aoxidized using ultrasonic assistant during above-mentioned differential arc oxidation is processed, the frequency of wherein ultrasonic wave is
35KHz。
Embodiment 2
A kind of micro-arc oxidation of aluminum alloy surface method, including following operating procedure：
（1）Aluminium alloy is put into after soaking 9min in rust cleaning degreasing fluid, takes out and clean surface, drying in baking oven is put into, wherein removing
Rust degreasing fluid is made up of the component of following weight portion：18 parts of ethoxy urea, 16 parts of sodium allylsulfonate, 7 parts of HPMA,
EDTA12 parts, 6 parts of N- acyl sarcosinates, 2 parts of methyl triacetoxysilane, 130 parts of water；
（2）Aluminium alloy after drying is put into electrolytic cell carries out differential arc oxidation treatment, using pending aluminium alloy as anode,
316L stainless steels are made up as negative electrode, wherein micro-arc oxidation electrolyte of the component of following weight portion：43 parts of propylene glycol monomethyl ether, Jiao
13 parts of sodium phosphate, 17 parts of calcium phosphate, 7 parts of isomeric alcohol polyethenoxy ether, 2 parts of diphenylphosphoric acid, TMSPi3 parts, 140 parts of water.
Specifically, above-mentioned steps（2）In the condition of differential arc oxidation be：Using constant current controlling pattern, the electricity of positive negative sense
Stream is than being 1:1, positive dutycycle and negative sense dutycycle are respectively 50%, and current density is 6A/dm2, differential arc oxidation treatment time be
40min。
Specifically, aoxidized using ultrasonic assistant during above-mentioned differential arc oxidation is processed, the frequency of wherein ultrasonic wave is
37KHz.Embodiment 3
A kind of micro-arc oxidation of aluminum alloy surface method, including following operating procedure：
（1）Aluminium alloy is put into after soaking 10min in rust cleaning degreasing fluid, takes out and clean surface, drying in baking oven is put into, wherein removing
Rust degreasing fluid is made up of the component of following weight portion：20 parts of ethoxy urea, 17 parts of sodium allylsulfonate, 8 parts of HPMA,
13 parts of EDTA, 7 parts of N- acyl sarcosinates, 3 parts of methyl triacetoxysilane, 140 parts of water；
（2）Aluminium alloy after drying is put into electrolytic cell carries out differential arc oxidation treatment, using pending aluminium alloy as anode,
316L stainless steels are made up as negative electrode, wherein micro-arc oxidation electrolyte of the component of following weight portion：45 parts of propylene glycol monomethyl ether, Jiao
15 parts of sodium phosphate, 20 parts of calcium phosphate, 8 parts of isomeric alcohol polyethenoxy ether, 3 parts of diphenylphosphoric acid, 4 parts of TMSPi, 150 parts of water.
Specifically, above-mentioned steps（2）In the condition of differential arc oxidation be：Using constant current controlling pattern, the electricity of positive negative sense
Stream is than being 1:1, positive dutycycle and negative sense dutycycle are respectively 50%, and current density is 7A/dm2, differential arc oxidation treatment time be
45min。
Specifically, aoxidized using ultrasonic assistant during above-mentioned differential arc oxidation is processed, the frequency of wherein ultrasonic wave is
40KHz。
With reference to GB/T10125-1997 to aluminum alloy differential arc obtained in conventional technical means in embodiment 1,2,3 and comparative example
Oxide covering carries out neutral salt spray test, and corrosive medium is 15% sodium-chloride water solution, and temperature is 40 DEG C, result of the test such as table 1
It is shown：
The aluminum alloy differential arc oxidation coating salt spray test of table 1
| Project | There is spot corrosion time/h |
| Embodiment 1 | 1900 |
| Embodiment 2 | 1950 |
| Embodiment 3 | 1970 |
| Comparative example | 1510 |
Wear test uses UMT-2MT types ball-disk-type friction wear tester, is measured using 2206 type surfagauges
Aluminum alloy differential arc oxidation coating volume wear obtained in conventional technical means in embodiment 1,2,3 and comparative example, and calculate body
Product wear rate, specific experiment condition is as follows:25 DEG C of temperature, humidity 50%, the N of load 3, sliding speed 0.1m/s, dry friction, point connects
The mode of touching, mating plate is the GCr15 steel balls of diameter 3mm, and result of the test is as shown in table 2：
The aluminum alloy differential arc oxidation coating Abrasion resistance test of table 2
| Project | Volume wear/mm3 | Volume erosion rate/mm3/(N.m) |
| Embodiment 1 | 3.587×10-3 | 6.014×10-6 |
| Embodiment 2 | 4.401×10-3 | 7.654×10-6 |
| Embodiment 3 | 4.691×10-3 | 7.952×10-6 |
| Comparative example | 9.210×10-2 | 8.645×10-5 |
As known from the above, a kind of micro-arc oxidation of aluminum alloy surface method that the present invention is provided, can effectively lift aluminum alloy surface
Corrosion resistance and abrasion resistance properties, greatly improve the quality of aluminium alloy.
Claims (3)
1. a kind of micro-arc oxidation of aluminum alloy surface method, it is characterised in that including following operating procedure：
（1）Aluminium alloy is put into after soaking 8-10min in rust cleaning degreasing fluid, takes out and clean surface, be put into drying in baking oven, wherein
Rust cleaning degreasing fluid is made up of the component of following weight portion：16-20 parts of ethoxy urea, sodium allylsulfonate 15-17 parts, the poly- Malaysia of hydrolysis
Acid anhydrides 6-8 parts, EDTA11-13 parts, 5-7 parts of N- acyl sarcosinates, methyl triacetoxysilane 1-3 parts, water 120-140
Part；
（2）Aluminium alloy after drying is put into electrolytic cell carries out differential arc oxidation treatment, using pending aluminium alloy as anode,
316L stainless steels are made up as negative electrode, wherein micro-arc oxidation electrolyte of the component of following weight portion：Propylene glycol monomethyl ether 40-45
Part, sodium pyrophosphate 12-15 parts, calcium phosphate 15-20 parts, isomeric alcohol polyethenoxy ether 6-8 parts, diphenylphosphoric acid 1-3 parts, TMSPi
2-4 parts, water 130-150 parts.
2. a kind of micro-arc oxidation of aluminum alloy surface method according to claim 1, it is characterised in that step（2）In
The condition of differential arc oxidation is：Using constant current controlling pattern, the electric current ratio of positive negative sense is 1:1, positive dutycycle and negative sense duty
Than being respectively 50%, current density is 5-7A/dm2, the time of differential arc oxidation treatment is 35-45min.
3. a kind of micro-arc oxidation of aluminum alloy surface method according to claim 1 or 2, it is characterised in that differential arc oxidation
Aoxidized using ultrasonic assistant during treatment, wherein the frequency of ultrasonic wave is 35-40KHz.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611220245.0A CN106702455A (en) | 2016-12-26 | 2016-12-26 | Micro-arc oxidation method for surface of aluminum alloy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611220245.0A CN106702455A (en) | 2016-12-26 | 2016-12-26 | Micro-arc oxidation method for surface of aluminum alloy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107216676A (en) * | 2017-05-27 | 2017-09-29 | 巢湖市天宇渔具有限公司 | A kind of method of fishing net waste disposal |
| CN107829123A (en) * | 2017-10-09 | 2018-03-23 | 深圳市中科摩方科技有限公司 | A kind of aluminium alloy of surface duplex coating and its preparation method and application |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1997777A (en) * | 2004-02-18 | 2007-07-11 | 坎梅陶尔股份有限公司 | Method of anodizing metallic surfaces and compositions |
-
2016
- 2016-12-26 CN CN201611220245.0A patent/CN106702455A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1997777A (en) * | 2004-02-18 | 2007-07-11 | 坎梅陶尔股份有限公司 | Method of anodizing metallic surfaces and compositions |
Non-Patent Citations (1)
| Title |
|---|
| 王静 等: "《多孔生物材料》", 1 May 2012, 机械工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107216676A (en) * | 2017-05-27 | 2017-09-29 | 巢湖市天宇渔具有限公司 | A kind of method of fishing net waste disposal |
| CN107829123A (en) * | 2017-10-09 | 2018-03-23 | 深圳市中科摩方科技有限公司 | A kind of aluminium alloy of surface duplex coating and its preparation method and application |
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Application publication date: 20170524 |