CN108893732A - Strong corrosion resistant environment-friendlythin thin film passivating method and its passivating solution - Google Patents
Strong corrosion resistant environment-friendlythin thin film passivating method and its passivating solution Download PDFInfo
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- CN108893732A CN108893732A CN201810849924.7A CN201810849924A CN108893732A CN 108893732 A CN108893732 A CN 108893732A CN 201810849924 A CN201810849924 A CN 201810849924A CN 108893732 A CN108893732 A CN 108893732A
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- strong corrosion
- passivating
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- 230000007797 corrosion Effects 0.000 title claims abstract description 54
- 238000005260 corrosion Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000010409 thin film Substances 0.000 title claims abstract description 24
- 230000007613 environmental effect Effects 0.000 claims abstract description 26
- 239000010408 film Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000005238 degreasing Methods 0.000 claims abstract description 5
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 claims description 14
- 239000004925 Acrylic resin Substances 0.000 claims description 13
- 229920000178 Acrylic resin Polymers 0.000 claims description 13
- 239000002253 acid Substances 0.000 claims description 11
- 238000002161 passivation Methods 0.000 claims description 11
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 10
- 229910052731 fluorine Inorganic materials 0.000 claims description 10
- 239000011737 fluorine Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 239000013527 degreasing agent Substances 0.000 claims description 4
- 238000004090 dissolution Methods 0.000 claims description 2
- 238000005406 washing Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 4
- 230000001681 protective effect Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 19
- 229910052782 aluminium Inorganic materials 0.000 description 19
- 239000004411 aluminium Substances 0.000 description 14
- 230000006872 improvement Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 229910052726 zirconium Inorganic materials 0.000 description 4
- 239000000758 substrate Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004532 chromating Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005237 degreasing agent Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- C23C22/40—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 molybdates, tungstates or vanadates
- C23C22/44—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 molybdates, tungstates or vanadates containing also fluorides or complex fluorides
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 kind of strong corrosion resistant environment-friendlythin thin film passivating method and its passivating solutions, and this approach includes the following steps：1) degreasing：Oil removing ungrease treatment is carried out to workpiece；2) it washes；3) it is passivated：Workpiece is immersed in strong corrosion resistant environmental protection passivating solution and is passivated；4) it dries：It takes out workpiece feeding oven from strong corrosion resistant environmental protection passivating solution liquid to be dried, to form one layer of passivating film in the workpiece surface of drying；, can be in one layer of dense uniform of workpiece surface formation, the protective film of good corrosion resistance after workpiece is using the technology of the present invention processing, corrosion resistance is strong; adaptability is good, and through strong corrosion resistant environmental protection passivating solution treated workpiece, can directly carry out baking process without washing; save washing step; a large amount of water resource can be saved, and shortens entire inaction period, improves working efficiency; reduce cost; it is more energy efficient, it is more environmentally friendly, it is conducive to wide popularization and application.
Description
Technical field
The present invention relates to passivation treatment technology field, in particular to a kind of strong corrosion resistant environment-friendlythin thin film passivating method and its
Product.
Background technique
Aluminium due to light-weight, price are low and be widely used as evaporator of refrigerator, automobile, motorcycle industry engine outside
Shell, open air are using aluminium as articles for daily use of substrate etc., such as the aluminium sheet of door and window, decoration of exterior wall etc..
But since the oxide film that the surface of aluminium generates naturally is relatively thin and not fine and close, be chronically exposed to corrosive medium or
In person's environment, easily make aluminium that spot corrosion occur, break down so as to cause apparatus and even scrap, this is a kind of to resource
Waste, while serious pollution will also result in environment.
Carrying out preservative treatment to aluminum tube surfaces is an important channel for improving its corrosion resistance, and traditional processing side
Method is chromating processing, and by forming one layer of dual oxide state containing Cr (III) and Cr (VI) in aluminum tube surfaces, structure causes
It is close, there is self-repair effect, and the conversion film layer that corrosion resisting property is excellent.The simple process, passivation is at low cost, binding force of membrane is good,
Etch resistant properties are high, while having self-repairing capability.But since Cr (VI) has hypertoxicity, human and environment is endangered seriously, at present
Countries in the world are made laws one after another, and European Union ROSH, which is also instructed, requires electronics, electric type product must Trend of Chrome-free.Under the pressure of environmental pressure and people
The enhancing of environmental consciousness, chromium-free deactivation have become research hotspot.
Chrome-free tanning agent product most absolutely is made of pin hydrochlorate and fluorine zirconic acid or salt at present, treatment process：Degreasing
→ washing → washing → passivation → washing → washing → drying → postorder coating.Such product water consumption is big, is unfavorable for energy conservation.Separately
Outside, such product corrosion resistance is poor, and the neutral salt spray test of naked film was all difficult more than 24 hours.
There are also a kind of products, and molybdate is added on the basis of the above product, and the neutral salt spray test of naked film has bigger
Raising.But to the biggish substrate of the holes such as die casting aluminium, the market demand is not still met.And consumption is huge, to market
Fitness is not high.
Summary of the invention
For above-mentioned existing deficiency, present invention aims at provide a kind of strong corrosion resistant environment-friendlythin thin film passivation side
Method.
The present invention also aims to provide a kind of strong corrosion resistant environmental protection passivating solution.
To achieve the above object, provided technical solution is the present invention：A kind of strong corrosion resistant environment-friendlythin thin film passivation side
Method comprising following steps：
(1) degreasing：Oil removing ungrease treatment is carried out to workpiece；
(2) it washes：Workpiece surface is cleaned up with water；
(3) it is passivated：Workpiece is immersed in strong corrosion resistant environmental protection passivating solution and is passivated；The strong corrosion resistant environmental protection passivating solution
Material quality percentage it is as follows：
(4) it dries：It takes out workpiece feeding oven from strong corrosion resistant environmental protection passivating solution liquid to be dried, in the workpiece of drying
Surface forms one layer of passivating film.
As an improvement of the present invention, the step (3) includes the following steps：
(3.1) fluorine zirconic acid and pure water for weighing corresponding amount mix, and stir evenly, and obtain the first mixed liquor；
(3.2) molybdate and zirconates for weighing corresponding amount are added the first mixed liquor and stir, complete to molybdate and zirconates
After dissolution, the second mixed liquor is obtained；
(3.3) acrylic resin is slowly added to the second mixed liquor, after acrylic resin has added, continues 10~50 points of stirring
Clock is made and protects thin film passivation liquid.
As an improvement of the present invention, the mixing speed of the step (3.1) is 60~100 revs/min, the step
(3.2) mixing time is 8~12 minutes.
As an improvement of the present invention, the conductivity of the strong corrosion resistant environmental protection passivating solution is less than 500us/cm.
As an improvement of the present invention, the step (1) carries out oil removing ungrease treatment, oil removing to workpiece using degreaser
Ungrease treatment effect is good；
As an improvement of the present invention, repeating said steps (2) one times, improve the cleannes of workpiece surface.
As an improvement of the present invention, the passivation of the step (3) is 30~120 seconds.
As an improvement of the present invention, the drying temperature in the step (4) is no more than 250 degrees Celsius.
As an improvement of the present invention, the passivating film with a thickness of 5~30 nanometers.
A kind of strong corrosion resistant environmental protection passivating solution, material quality percentage it is as follows：
Beneficial effects of the present invention are：Molybdate and zirconates energy and reactive aluminum in the present invention deposit one in aluminium surface
Then chemical films are supplemented and are improved by acrylic resin by layer chemical films, gap and some aluminium base tables chemical films
The gap in face is filled up, and air cannot be contacted with aluminium and chemical films, is played the role of closed.Meanwhile the effect for passing through hydrogen bond
Power forms link effect, completely cuts off contact of the aluminium with air on one side；It is played and oil during postorder coating another side
The effect that resin reaction in paint/powder forms chemical bond is firmly combined to more preferably promote paint/powder adhesive force, from
And it realizes and forms the protective film of one layer of dense uniform, good corrosion resistance in workpiece surface；In addition, blunt through strong corrosion resistant environmental protection
Change liquid treated workpiece, can directly carry out baking process without washing, save washing step, a large amount of water money can be saved
Source, and shorten entire inaction period, working efficiency is improved, cost is reduced, it is more energy efficient, it is more environmentally friendly, it is conducive to wide popularization and application.
Detailed description of the invention
Fig. 1 is flow chart of the method for the present invention.
Specific embodiment
Embodiment 1：Referring to Fig. 1, the embodiment of the present invention provides a kind of strong corrosion resistant environment-friendlythin thin film passivating method, feature
It is comprising following steps：
(1) degreasing：Oil removing ungrease treatment is carried out to workpiece；Specifically, the step (2) carries out oil removing to workpiece using degreaser
Ungrease treatment, oil removing ungrease treatment effect are good；
(2) it washes：Workpiece surface is cleaned up with water；For the residual for reducing degreasing agent to the greatest extent, preferably repeating said steps (3)
One time, improve the cleannes of workpiece surface；
(3) it is passivated：Workpiece is immersed in strong corrosion resistant environmental protection passivating solution and is passivated；The strong corrosion resistant environmental protection passivating solution
Material quality percentage it is as follows：Molybdate 3%；Zirconates 10%；Fluorine zirconic acid 20%；Acrylic resin 30%；Pure water
32%；The conductivity of the strong corrosion resistant environmental protection passivating solution is preferably smaller than 500us/cm；Specifically, the step (3) includes
Following steps：(3.1) fluorine zirconic acid and pure water for weighing corresponding amount mix, and stir evenly, and obtain the first mixed liquor；Preferably
, the mixing speed of the step (3.1) is 60~100 revs/min, and the mixing time of the step (3.2) is 8~12 minutes.
(3.2) molybdate and zirconates for weighing corresponding amount are added the first mixed liquor and stir, and are completely dissolved to molybdate and zirconates
Afterwards, the second mixed liquor is obtained；(3.3) acrylic resin is slowly added to the second mixed liquor, after acrylic resin has added, after
Continuous stirring 10~50 minutes, is made and protects thin film passivation liquid.The passivation procedure time is preferably 30~120 seconds.
(4) it dries：It takes out workpiece feeding oven from strong corrosion resistant environmental protection passivating solution liquid to be dried, the drying temperature
Preferably more than 250 degrees Celsius, realize drying workpiece surface formed one layer of passivating film, the passivating film with a thickness of 5~30
Nanometer, preferably 8~12 nanometers.
Embodiment 2：The embodiment of the present invention provides a kind of strong corrosion resistant environment-friendlythin thin film passivating method, with 1 base of embodiment
This is identical, and distinctive points are, the material quality percentage of the strong corrosion resistant environmental protection passivating solution is as follows：Molybdate 8%；Zirconic acid
Salt 8%；Fluorine zirconic acid 30%；Acrylic resin 40%；Pure water 14%.
Embodiment 3：The embodiment of the present invention provides a kind of strong corrosion resistant environment-friendlythin thin film passivating method, with 1 base of embodiment
This is identical, and distinctive points are, the material quality percentage of the strong corrosion resistant environmental protection passivating solution is as follows：Molybdate 14%；Zirconium
Hydrochlorate 5%；Fluorine zirconic acid 10%；Acrylic resin 28%；Pure water 43%.
Embodiment 4：The embodiment of the present invention provides a kind of strong corrosion resistant environment-friendlythin thin film passivating method, with 1 base of embodiment
This is identical, and distinctive points are, the material quality percentage of the strong corrosion resistant environmental protection passivating solution is as follows：Molybdate 12%；Zirconium
Hydrochlorate 7%；Fluorine zirconic acid 25%；Acrylic resin 25%；Pure water 31%.
Embodiment 5：The embodiment of the present invention provides a kind of strong corrosion resistant environment-friendlythin thin film passivating method, with 1 base of embodiment
This is identical, and distinctive points are, the material quality percentage of the strong corrosion resistant environmental protection passivating solution is as follows：Molybdate 15%；Zirconium
Hydrochlorate 6%；Fluorine zirconic acid 28%；Acrylic resin 10%；Pure water 41%.
Embodiment 6：The embodiment of the present invention provides a kind of strong corrosion resistant environment-friendlythin thin film passivating method, with 1 base of embodiment
This is identical, and distinctive points are, the material quality percentage of the strong corrosion resistant environmental protection passivating solution is as follows：Molybdate 13%；Zirconium
Hydrochlorate 9%；Fluorine zirconic acid 23%；Acrylic resin 27%；Pure water 28%.
Above-described embodiment is only the preferable embodiment of the present invention, and the present invention cannot enumerate out whole embodiment party
Formula, all technical solutions using one of above-described embodiment, or the equivalent variations done according to above-described embodiment are protected in the present invention
It protects in range.
It is tested through experiment, the workpiece handled using the technology of the present invention, mainly aluminum component, one layer of cause can be formed in workpiece surface
Close uniform, good corrosion resistance protective film.For the general resistance to neutral salt spray of the naked film of aluminium up to 96 hours or more, the naked film of die casting aluminum component was resistance to
For neutral salt spray up to 48 hours or more, good corrosion resistance was adaptable, and can be adapted for the precision instrument that some aluminium bases are done has
Good protective effect, especially automobile, motorcycle industry engine housing；And it need to be subjected to the open air of solarization water leaching all the year round
It is applied widely using aluminium as articles for daily use of substrate, such as the aluminium sheet of door and window, decoration of exterior wall etc..
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and is modified.Therefore, the invention is not limited to the specific embodiments disclosed and described above, to of the invention
Some modifications and changes should also be as falling into the scope of the claims of the present invention.In addition, although being used in this specification
Some specific terms, these terms are merely for convenience of description, does not limit the present invention in any way, using with its
Other methods and product, all fall in the scope of protection of the present invention obtained from same or similar method.
Claims (10)
1. a kind of strong corrosion resistant environment-friendlythin thin film passivating method, which is characterized in that it includes the following steps：
(1) degreasing：Oil removing ungrease treatment is carried out to workpiece；
(2) it washes：Workpiece surface is cleaned up with water；
(3) it is passivated：Workpiece is immersed in strong corrosion resistant environmental protection passivating solution and is passivated；The strong corrosion resistant environmental protection passivating solution
Material quality percentage it is as follows：
(4) it dries：It takes out workpiece feeding oven from strong corrosion resistant environmental protection passivating solution liquid to be dried, in the workpiece of drying
Surface forms one layer of passivating film.
2. strong corrosion resistant environment-friendlythin thin film passivating method according to claim 1, which is characterized in that step (3) packet
Include following steps：
(3.1) fluorine zirconic acid and pure water for weighing corresponding amount mix, and stir evenly, and obtain the first mixed liquor；
(3.2) molybdate and zirconates for weighing corresponding amount are added the first mixed liquor and stir, complete to molybdate and zirconates
After dissolution, the second mixed liquor is obtained；
(3.3) acrylic resin is slowly added to the second mixed liquor, after acrylic resin has added, continues 10~50 points of stirring
Clock is made and protects thin film passivation liquid.
3. strong corrosion resistant environment-friendlythin thin film passivating method according to claim 2, which is characterized in that the step (3.1)
Mixing speed be 60~100 revs/min, the mixing time of the step (3.2) is 8~12 minutes.
4. strong corrosion resistant environment-friendlythin thin film passivating method described in any one of -3 according to claim 1, which is characterized in that institute
The conductivity for stating strong corrosion resistant environmental protection passivating solution is less than 500us/cm.
5. strong corrosion resistant environment-friendlythin thin film passivating method according to claim 1, which is characterized in that the step (1) is adopted
Oil removing ungrease treatment is carried out to workpiece with degreaser.
6. strong corrosion resistant environment-friendlythin thin film passivating method according to claim 1, which is characterized in that repeating said steps
(2) one times.
7. strong corrosion resistant environment-friendlythin thin film passivating method according to claim 1, which is characterized in that the step (3)
Passivation is 30~120 seconds.
8. strong corrosion resistant environment-friendlythin thin film passivating method according to claim 1, which is characterized in that in the step (4)
Drying temperature be no more than 250 degrees Celsius.
9. strong corrosion resistant environment-friendlythin thin film passivating method according to claim 1, which is characterized in that the thickness of the passivating film
Degree is 5~30 nanometers.
10. a kind of strong corrosion resistant environmental protection passivating solution, which is characterized in that its material quality percentage is as follows：
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810849924.7A CN108893732A (en) | 2018-07-28 | 2018-07-28 | Strong corrosion resistant environment-friendlythin thin film passivating method and its passivating solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810849924.7A CN108893732A (en) | 2018-07-28 | 2018-07-28 | Strong corrosion resistant environment-friendlythin thin film passivating method and its passivating solution |
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| CN108893732A true CN108893732A (en) | 2018-11-27 |
Family
ID=64352732
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| CN201810849924.7A Pending CN108893732A (en) | 2018-07-28 | 2018-07-28 | Strong corrosion resistant environment-friendlythin thin film passivating method and its passivating solution |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101506405A (en) * | 2006-08-24 | 2009-08-12 | 汉高两合股份公司 | Chromium-free, thermally curable corrosion protection composition |
| WO2013097002A8 (en) * | 2011-12-29 | 2014-05-08 | Meneghesso Adeval Antonio | A composition for pre-treatment of an aluminum surface, a method for preparing and applying the composition, use of the composition and a product |
| CN104561973A (en) * | 2014-12-30 | 2015-04-29 | 广州市泓硕环保科技有限公司 | Colored chromium-free passivation film and passivation solution for aluminum alloy surface and use method of passivation film and passivation solution |
| CN105803442A (en) * | 2016-05-25 | 2016-07-27 | 博罗县东明化工有限公司 | Zr-Ti passive film treating agent for aluminum or aluminum alloy and treating method thereof |
| CN107779852A (en) * | 2017-10-24 | 2018-03-09 | 珠海格力电器股份有限公司 | Surface passivation composition, surface conditioning agent, micro-channel heat exchanger and preparation method thereof |
-
2018
- 2018-07-28 CN CN201810849924.7A patent/CN108893732A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101506405A (en) * | 2006-08-24 | 2009-08-12 | 汉高两合股份公司 | Chromium-free, thermally curable corrosion protection composition |
| WO2013097002A8 (en) * | 2011-12-29 | 2014-05-08 | Meneghesso Adeval Antonio | A composition for pre-treatment of an aluminum surface, a method for preparing and applying the composition, use of the composition and a product |
| CN104561973A (en) * | 2014-12-30 | 2015-04-29 | 广州市泓硕环保科技有限公司 | Colored chromium-free passivation film and passivation solution for aluminum alloy surface and use method of passivation film and passivation solution |
| CN105803442A (en) * | 2016-05-25 | 2016-07-27 | 博罗县东明化工有限公司 | Zr-Ti passive film treating agent for aluminum or aluminum alloy and treating method thereof |
| CN107779852A (en) * | 2017-10-24 | 2018-03-09 | 珠海格力电器股份有限公司 | Surface passivation composition, surface conditioning agent, micro-channel heat exchanger and preparation method thereof |
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| Title |
|---|
| 訾赟等: "铝合金无铬化学氧化工艺的研究进展", 《电镀与精饰》 * |
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