CN104294250A - Solution formula and surface treatment method for conductive oxidation on aluminum alloy matrix - Google Patents
Solution formula and surface treatment method for conductive oxidation on aluminum alloy matrix Download PDFInfo
- Publication number
- CN104294250A CN104294250A CN201410449057.XA CN201410449057A CN104294250A CN 104294250 A CN104294250 A CN 104294250A CN 201410449057 A CN201410449057 A CN 201410449057A CN 104294250 A CN104294250 A CN 104294250A
- Authority
- CN
- China
- Prior art keywords
- conductive oxidation
- solution
- electric conductive
- alloy matrix
- aluminium
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
- C23C22/36—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/78—Pretreatment of the material to be coated
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The invention discloses a solution formula and a surface treatment method for conductive oxidation on an aluminum alloy matrix. The solution formula comprises 5-10g/L of chrome oxide, 40-60g/L of phosphoric acid and 3-5g/l of sodium fluoride. A conductive oxidation film can be generated on the surface of the aluminum alloy matrix through oil removal, alkali washing, pickling and coloring of the aluminum alloy matrix, the color of the formed film is uniform, the excellent characteristics (such as mechanical performances) of the above aluminum material cannot be changed, the wear and corrosion resistance of the matrix is improved, and the beauty of the matrix is also improved. The formula and the method comprehensively take the cost, performances and other factors into consideration, adopt a conductive oxidation treatment mode, do not change the dimensions of workpieces, have the advantages of simple device, operation convenience and low price, and have good popularization and application prospect in the industrial production.
Description
Technical field
The present invention relates to a kind of metal surface treatment technology, be specifically related to a kind of solution formula and surface treatment method of electric conductive oxidation on aluminium, belong to technical field of material modification.
Background technology
Along with the development of micro-wave communication, Aluminum-aluminum alloy is applied widely because intensity is high, density is little, be easy to the advantages such as processing in communications component, but these materials exist, and wear resistance and corrosion resistance difference, hardness are low, chemical property vivaciously, the very easily shortcoming such as oxidation, need to adopt process for treating surface to improve the surface property of its product.
Aluminum is applied on solid state microwave assembly and needs to solve such material wear-resistant corrosion-resistant and oxidizable shortcoming; this just needs to generate layer protecting film at material surface; in industrial application; we not only will consider surface-treated performance; also need to consider in conjunction with many aspects such as costs, a kind of suitable surface treatment mode of final selection.
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide a kind of solution formula and treatment process of alloy matrix aluminum being carried out to electric conductive oxidation, can at aluminum alloy organism Surface Creation one deck conductive oxide film.
In order to realize above-mentioned target, the present invention adopts following technical scheme:
A solution formula for electric conductive oxidation on alloy matrix aluminum, comprises each component of following content: chromic oxide 5-10g/L, phosphatase 24 0-60g/L, Sodium Fluoride 3-5g/L; Said components is fully dissolved in solvent and makes solution.
Preferably, the purity of aforementioned oxidation chromium, phosphoric acid, Sodium Fluoride is analytical pure.
Preferably, aforementioned solvents is deionized water.
In addition, the invention also discloses a kind of surface treatment method of electric conductive oxidation on alloy matrix aluminum, comprise the steps:
S1, organic process of deoiling: aluminium is put into the acetone soln that temperature is 40-60 DEG C, soak 15-20 minute;
S2, chemical deoiling and degreasing process: the aluminium after immersion treatment is in acetone put into the chemical deoiling and degreasing solution that temperature is 40-60 DEG C, ultrasonic immersion 15-20 minute, wherein, the proportioning of chemical deoiling and degreasing liquid is: sodium carbonate 18-25g/L, sodium phosphate 18-25g/L, emulsifying agent 3-5g/L; Then put into the hot water rinsing 30s-60s that temperature is 60-80 DEG C, and then with flowing rinsed with deionized water 30s-60s;
S3, alkali cleaning: aluminium to be put into temperature be 40-60 DEG C of content is the sodium hydroxide solution 20 seconds of 80-100g/L, is rinsing 20-30s in 60-80 DEG C of hot water in temperature, then with the rinsed with deionized water 20-30s of flowing;
S4, pickling brightening: aluminium being put into nitric acid and water volume ratio is that the pickle solution of 1:3 processes 30s, then carries out cleaning 20-30s in the deionized water of flowing;
S5, coloring treatment: aluminium being put into the temperature prepared is that the electric conductive oxidation solution of 15-30 DEG C carries out coloring treatment 5-20min, and then cleans in the pure water of flowing, and described electric conductive oxidation solution is for described in any one of claim 1-3.
Particularly, the step of used in preparation steps S5 electric conductive oxidation solution is as follows:
(1), according to the formulation content of claim 1 take chromic oxide, phosphoric acid, Sodium Fluoride, in liquid dispensing container, inject the deionized water of 1/3, in container, then add the chromic oxide taken, utilize glass stick ceaselessly to stir, make it fully dissolve;
(2), by the Sodium Fluoride taken put into beaker that is clean, capacity suitable, add appropriate amount of deionized water, utilize glass stick ceaselessly to stir, make it fully dissolve, for subsequent use;
(3), by phosphoric acid inject graduated cylinder to weigh, and observe the volume of phosphoric acid when taking required massfraction, for subsequent use;
(4), the Fluorinse fully dissolved slowly is poured in liquid dispensing container, and utilize glass stick ceaselessly to stir, then phosphoric acid solution is slowly poured in liquid dispensing container, and ceaselessly stir, in liquid dispensing container, add deionized water to required work liquid level, complete the preparation of electric conductive oxidation solution;
(5), by the water-bath of electric conductive oxidation solution 25 DEG C are heated to, for subsequent use.
As a specific embodiment, the emulsifying agent in step S2 is OP-10, can obtain better chemical deoiling and degreasing effect with sodium carbonate and sodium phosphate mating reaction.
Finally, after step S5 coloring treatment, the thicknesses of layers of aluminium material surface is 1-4 micron.
Usefulness of the present invention is: solution formula of the present invention and surface treatment method, by deoiling to alloy matrix aluminum, alkali cleaning, pickling, painted multiple step process, one deck conductive oxide film can be generated at aluminium alloy matrix surface, and film forming color even, neither change the good characteristic (as mechanical property) of aluminium body, and improve the wear resistant corrosion resistant of matrix, also improve matrix aesthetics simultaneously; The present invention has considered the factor of the multiaspect such as cost, performance, adopts the mode of electric conductive oxidation process, do not change workpiece size, and equipment is simple, easy to operate, low price, has the good prospect applied in the industrial production.
Embodiment
Below in conjunction with specific embodiment, concrete introduction is done to the present invention.
Embodiment 1
One, each solution preparation
Prepare stand-by electric conductive oxidation solution, process is as follows: take chromic oxide CrO according to formula
35g/L, phosphoric acid H
3pO
440g/L, Sodium Fluoride NaF3g/L, inject the deionized water of 1/3, in container, then add the chromic oxide taken, utilize glass stick ceaselessly to stir, make it fully dissolve in liquid dispensing container; The Sodium Fluoride taken puts into beaker that is clean, capacity suitable, adds appropriate amount of deionized water, utilizes glass stick ceaselessly to stir, and makes it fully dissolve, for subsequent use; Phosphoric acid is injected graduated cylinder weigh, and observe the volume of phosphoric acid when taking required massfraction, for subsequent use; The Fluorinse fully dissolved slowly is poured in liquid dispensing container, and utilize glass stick ceaselessly to stir, then phosphoric acid solution is slowly poured in liquid dispensing container, and ceaselessly stir, deionized water is added to required work liquid level in liquid dispensing container, complete the preparation of electric conductive oxidation solution, finally the water-bath of electric conductive oxidation solution is heated to 25 DEG C, for subsequent use.
Prepare chemical degreasing solution: take sodium phosphate Na according to formula
3pO
412H
2o18-25g/L, sodium carbonate 18-25g/L, emulsifier op-10 3-5g/L, be mixed with homogeneous solution and heating in water bath to 50 DEG C.
Preparation aluminium alloy soda-wash solution: weighing proportioning by formula is the sodium hydroxide of 100g/L, is added to the water and stirring and dissolving, and heating in water bath to 50 DEG C.
Preparation aluminium alloy Acidwash solution: measure nitric acid and deionized water by formula, is added to the water nitric acid lentamente and stirs and be cooled to room temperature, and acid formula is: nitric acid and water volume ratio are 1:3.
Two, electric conductive oxidation process
Alloy matrix aluminum is tied up with aluminium conductor, point of contact is more few better, part being put into temperature is that the acetone soln of 50 DEG C deoils process 15min, then, the temperature prepared before being put into by alloy matrix aluminum is again the ultrasonic 20min that deoils of chemical deoiling and degreasing solution of 50 DEG C, and ultrasonic power can take the circumstances into consideration to regulate according to practical situation, then part is put into the hot water rinsing 20s that temperature is 60 DEG C, rinsing 30s in the pure water of flowing again, effect of deoiling is very remarkable;
Subsequently, alloy matrix aluminum being put into temperature is that the soda-wash solution of 50 DEG C processes 20s, is then carry out cleaning 20s in the hot water of 60 DEG C in temperature, then cleans 30s in the pure water of flowing;
In order to make the surface of alloy matrix aluminum more attractive in appearance, obtain better surface colour effect, the Acidwash solution prepared before then being put into by alloy matrix aluminum processes 30s simultaneously, then cleans 30s in the pure water of flowing;
The electric conductive oxidation solution that alloy matrix aluminum clean completed is prepared before putting into carries out painted, time 5min, then cleaning aluminum alloy matrix 60s in the pure water of flowing, again alloy matrix aluminum is put into baking oven, dry 5min under 100 DEG C of conditions, finally takes off the aluminium wire of binding, completes painted, range estimation Film color, in light blue uniformly, utilizes step instrument to record thick about 2.1 μm of rete.
Embodiment 2
The compound method of each solution is substantially with embodiment 1, and difference is only the component concentration difference to some extent of electric conductive oxidation solution, and specifically, in electric conductive oxidation solution, chromic oxide content is CrO
38g/L, phosphoric acid H
3pO
4for 50g/L, Sodium Fluoride NaF are 4g/L.
Surface-treated step is also substantially the same manner as Example 1, and the time of last coloring treatment is 10min, and after drying, range estimation Film color is also in light blue uniformly, darker than the color outline of embodiment 1, utilizes step instrument to record thick about 3.2 μm of rete.
Embodiment 3
The compound method of each solution is substantially with embodiment 1, and difference is only the component concentration difference to some extent of electric conductive oxidation solution, and specifically, in electric conductive oxidation solution, chromic oxide content is CrO
310g/L, phosphoric acid H
3pO
4for 60g/L, Sodium Fluoride NaF are 5g/L.
Surface-treated step is also substantially the same manner as Example 1, and the time of last coloring treatment is 20min, and after drying, range estimation Film color is also in uniform mazarine, utilizes step instrument to record thick about 3.7 μm of rete.
Performance test
In order to verify that electric conductive oxidation solution of the present invention and surface treatment method can improve the over-all properties of aluminium, below the performance of the alloy matrix aluminum of each embodiment is detected, and compare with comparative example, comparative example is without any surface-treated aluminum alloy base material, and comparing result is in table 1.
The performance comparison of table 1 embodiment 1-3 and comparative example
Obvious from table 1, solution formula of the present invention and surface treatment method, by deoiling to alloy matrix aluminum, alkali cleaning, pickling, painted multiple step process, one deck conductive oxide film can be generated at aluminium alloy matrix surface, rete is light blue or mazarine, thickness 1-4 μm, both the mechanical property (as hardness) of aluminium body had been optimized, the more important thing is the wear resistant corrosion resistant that improve matrix, coefficient of wear improves greatly, film time of break-through extends greatly compared to comparative example, also optimize matrix aesthetics simultaneously, there is the good prospect applied in the industrial production.
Wherein, the detection means of each performance is as follows:
1) hardness
Plant and instrument: Brinell tester;
Concrete grammar is as follows: with Brinell tester, and adopt the pressure head of 10mm, the power of 1000N, detect example 1,2,3 and comparative example, hardness value is respectively 90HBS, 95HBS, 98HBS and 82HBS.
2) wear resisting property
Plant and instrument: fall husky tester; Concrete grammar is as follows: detect with sand trial instrument, be fixed on by sample on bearing, and upwards, the region measuring oxide thickness is relative with conduit, and subject face becomes miter angle with conduit for its subject face; Abrasive material No. 80 black silicon carbides (being accurate to 1g) weighed are added funnel, open switch freely to fall by abrasive material, flow control is at about 320g/min, observe and inspected sample, there is a pore in face and when being extended to about 2mm, shutting switch immediately and stop knockout, then take the quality of remaining abrasive material, weighing from above 2 times, calculate the abrasive material quality needed for worn out oxide film.
Wherein, coefficient of wear f=m/h evaluates wear resisting property, and unit is g/ μm; M by the quality of consumption abrasive material, unit is g; H is the thickness of oxide film, and unit is μm; Example 1,2,3 and coefficient of wear that comparative example is surveyed are respectively 350g/ μm, 430g/ μm, 480g/ μm and 40g/ μm.
3) corrosion resistance nature: drop alkali test
At 35 DEG C ± 1 DEG C, it is the surface that the NaOH solution of 90-100g/L drops to sample by 10mg, concentration, visual observation drop place, until produce corrosion bubble, record its oxide film by the time penetrated, the oxide film of example 1,2,3 and comparative example is respectively 55s, 72s, 78s and 8s by time of break-through.
4) surface aesthetics: visual observation;
With 0.5m distance visual observation example 1,2,3 and comparative example surface, example 1,2,3 sample has uniform especially outward appearance, and color, pitted skin, to be mingled with to dark blue, corrosion-free by pale blue, and comparative example is aluminium true qualities.
More than show and describe ultimate principle of the present invention, principal character and advantage.The technician of the industry should understand, and above-described embodiment does not limit the present invention in any form, the technical scheme that the mode that all employings are equal to replacement or equivalent transformation obtains, and all drops in protection scope of the present invention.
Claims (7)
1. the solution formula of electric conductive oxidation on alloy matrix aluminum, is characterized in that, comprise each component of following content: chromic oxide 5-10g/L, phosphatase 24 0-60g/L, Sodium Fluoride 3-5g/L; Said components is fully dissolved in solvent and makes solution.
2. the solution formula of a kind of electric conductive oxidation on alloy matrix aluminum according to claim 1, is characterized in that, the purity of described chromic oxide, phosphoric acid, Sodium Fluoride is analytical pure.
3. the solution formula of a kind of electric conductive oxidation on alloy matrix aluminum according to claim 1, is characterized in that, described solvent is deionized water.
4. the surface treatment method of electric conductive oxidation on alloy matrix aluminum, is characterized in that, comprise the steps:
S1, organic process of deoiling: aluminium is put into the acetone soln that temperature is 40-60 DEG C, soak 15-20 minute;
S2, chemical deoiling and degreasing process: the aluminium after immersion treatment is in acetone put into the chemical deoiling and degreasing solution that temperature is 40-60 DEG C, ultrasonic immersion 15-20 minute, wherein, the proportioning of chemical deoiling and degreasing liquid is: sodium carbonate 18-25g/L, sodium phosphate 18-25g/L, emulsifying agent 3-5g/L; Then put into the hot water rinsing 30s-60s that temperature is 60-80 DEG C, and then with flowing rinsed with deionized water 30s-60s;
S3, alkali cleaning: aluminium to be put into temperature be 40-60 DEG C of content is the sodium hydroxide solution 20 seconds of 100g/L, is rinsing 20-30s in 60-80 DEG C of hot water in temperature, then with the rinsed with deionized water 20-30 of flowing
s;
S4, pickling brightening: aluminium being put into nitric acid and water volume ratio is that the pickle solution of 1:3 processes 30s, then carries out cleaning 20-30s in the deionized water of flowing;
S5, coloring treatment: aluminium being put into the temperature prepared is that the electric conductive oxidation solution of 15-30 DEG C carries out coloring treatment 5-20min, and then cleans in the pure water of flowing, and described electric conductive oxidation solution is for described in any one of claim 1-3.
5. the surface treatment method of a kind of electric conductive oxidation on alloy matrix aluminum according to claim 4, is characterized in that, the step of electric conductive oxidation solution used in preparation steps S5 is as follows:
(1), according to the formulation content of claim 1 take chromic oxide, phosphoric acid, Sodium Fluoride, in liquid dispensing container, inject the deionized water of 1/3, in container, then add the chromic oxide taken, utilize glass stick ceaselessly to stir, make it fully dissolve;
(2), by the Sodium Fluoride taken put into beaker that is clean, capacity suitable, add appropriate amount of deionized water, utilize glass stick ceaselessly to stir, make it fully dissolve, for subsequent use;
(3), by phosphoric acid inject graduated cylinder to weigh, and observe the volume of phosphoric acid when taking required massfraction, for subsequent use;
(4), the Fluorinse fully dissolved slowly is poured in liquid dispensing container, and utilize glass stick ceaselessly to stir, then phosphoric acid solution is slowly poured in liquid dispensing container, and ceaselessly stir, in liquid dispensing container, add deionized water to required work liquid level, complete the preparation of electric conductive oxidation solution;
(5), by the water-bath of electric conductive oxidation solution 25 DEG C are heated to, for subsequent use.
6. the surface treatment method of a kind of electric conductive oxidation on alloy matrix aluminum according to claim 4, is characterized in that, the emulsifying agent in step S2 is OP-10.
7. the surface treatment method of a kind of electric conductive oxidation on alloy matrix aluminum according to claim 4, is characterized in that, after step S5 coloring treatment, the thicknesses of layers of aluminium material surface is 1-4 micron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410449057.XA CN104294250A (en) | 2014-09-04 | 2014-09-04 | Solution formula and surface treatment method for conductive oxidation on aluminum alloy matrix |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410449057.XA CN104294250A (en) | 2014-09-04 | 2014-09-04 | Solution formula and surface treatment method for conductive oxidation on aluminum alloy matrix |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104294250A true CN104294250A (en) | 2015-01-21 |
Family
ID=52314193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410449057.XA Pending CN104294250A (en) | 2014-09-04 | 2014-09-04 | Solution formula and surface treatment method for conductive oxidation on aluminum alloy matrix |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104294250A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106244968A (en) * | 2016-08-30 | 2016-12-21 | 广东通宇通讯股份有限公司 | A kind of antenna phasing unit aluminium section bar housing surface arc spray process and aluminium section bar cavity |
| CN114290609A (en) * | 2021-12-30 | 2022-04-08 | 广东富盛达智能科技有限公司 | High-strength wear-resistant aluminum mobile phone middle frame and machining process thereof |
| CN115233206A (en) * | 2022-07-28 | 2022-10-25 | 西安理工大学 | Preparation method of conductive copper color film layer on surface of aluminum material |
| CN115572964A (en) * | 2022-11-21 | 2023-01-06 | 河北宇天材料科技有限公司 | Conductive oxidation treatment method for aluminum alloy cavity |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174695A (en) * | 2011-03-17 | 2011-09-07 | 南昌航空大学 | Aluminum-conductive chemical oxidation method |
| CN102400127A (en) * | 2011-11-07 | 2012-04-04 | 郑州飞机装备有限责任公司 | Chemical oxidation method of surfaces of aluminum and aluminum alloys |
-
2014
- 2014-09-04 CN CN201410449057.XA patent/CN104294250A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174695A (en) * | 2011-03-17 | 2011-09-07 | 南昌航空大学 | Aluminum-conductive chemical oxidation method |
| CN102400127A (en) * | 2011-11-07 | 2012-04-04 | 郑州飞机装备有限责任公司 | Chemical oxidation method of surfaces of aluminum and aluminum alloys |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106244968A (en) * | 2016-08-30 | 2016-12-21 | 广东通宇通讯股份有限公司 | A kind of antenna phasing unit aluminium section bar housing surface arc spray process and aluminium section bar cavity |
| CN114290609A (en) * | 2021-12-30 | 2022-04-08 | 广东富盛达智能科技有限公司 | High-strength wear-resistant aluminum mobile phone middle frame and machining process thereof |
| CN115233206A (en) * | 2022-07-28 | 2022-10-25 | 西安理工大学 | Preparation method of conductive copper color film layer on surface of aluminum material |
| CN115233206B (en) * | 2022-07-28 | 2024-01-19 | 西安理工大学 | Preparation method of conductive copper film on surface of aluminum material |
| CN115572964A (en) * | 2022-11-21 | 2023-01-06 | 河北宇天材料科技有限公司 | Conductive oxidation treatment method for aluminum alloy cavity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Guo et al. | Hydrophobic epoxy resin coating with ionic liquid conversion pretreatment on magnesium alloy for promoting corrosion resistance | |
| Uhart et al. | An Auger and XPS survey of cerium active corrosion protection for AA2024-T3 aluminum alloy | |
| Kumari et al. | Corrosion behavior of 6061/Al-15 vol. pct. SiC (p) composite and the base alloy in sodium hydroxide solution | |
| Santa Coloma et al. | Chromium-free conversion coatings based on inorganic salts (Zr/Ti/Mn/Mo) for aluminum alloys used in aircraft applications | |
| Zhang et al. | Effect of nano-sized titanium powder addition on corrosion performance of epoxy coatings | |
| Hosseini et al. | The performance improvement of Zr conversion coating through Mn incorporation: With and without organic coating | |
| Ma et al. | Corrosion inhibition of Schiff bases for Mg-Zn-Y-Nd alloy in normal saline: Experimental and theoretical investigations | |
| CN104294250A (en) | Solution formula and surface treatment method for conductive oxidation on aluminum alloy matrix | |
| Lee et al. | Effect of permanganate concentration on the formation and properties of phosphate/permanganate conversion coating on AZ31 magnesium alloy | |
| Golabadi et al. | Corrosion and cathodic disbondment resistance of epoxy coating on zinc phosphate conversion coating containing Ni2+ and Co2+ | |
| Yang et al. | Corrosion behavior of Mg–8Li–3Zn–Al alloy in neutral 3.5% NaCl solution | |
| Mohammadloo et al. | The effect of solution temperature and pH on corrosion performance and morphology of nanoceramic‐based conversion thin film | |
| Mitton et al. | Selected Cr (VI) replacement options for aluminum alloys: a literature survey | |
| CN105038440A (en) | Polytetrafluoroethylene modified chromium-free Dacromet paint and preparation method of composite coating thereof | |
| Da Silva et al. | The molybdate–zinc conversion process | |
| CN106498399B (en) | A kind of fine aluminium grain size corrosive agent and preparation method thereof corrodes process for show | |
| CN104630760B (en) | A kind of brass surfaces prepares the preparation method of purple chemical composition coating | |
| CN108018591A (en) | A kind of aluminium and aluminium alloy anode oxide film are without nickel free-floride sealer | |
| Shi et al. | Influence of submicron-sheet zinc phosphate synthesised by sol–gel method on anticorrosion of epoxy coating | |
| Schuman | Protective coatings for aluminum alloys | |
| CN101135050B (en) | Metasilicate cleaning inactivating process | |
| Da Silva et al. | Study of conversion coatings obtained from tungstate-phosphoric acid solutions | |
| Yang et al. | High anticorrosion chromate-free passive films made by Titanate and waterborne polyurethane on galvanized steel sheet | |
| CN109628987A (en) | A kind of fastener barrel plating production technology | |
| CN109112522A (en) | A kind of coloring process of brass teeth zipper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150121 |