CN1039626A - The method of a kind of aluminium and aluminum alloy chemically oxidation - Google Patents
The method of a kind of aluminium and aluminum alloy chemically oxidation Download PDFInfo
- Publication number
- CN1039626A CN1039626A CN 89104371 CN89104371A CN1039626A CN 1039626 A CN1039626 A CN 1039626A CN 89104371 CN89104371 CN 89104371 CN 89104371 A CN89104371 A CN 89104371A CN 1039626 A CN1039626 A CN 1039626A
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- CN
- China
- Prior art keywords
- grams per
- chemical oxidation
- aluminium
- carry out
- liters
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Classifications
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- 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
- C23C22/37—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 hexavalent chromium compounds
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- 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 provides a kind of aluminium and aluminum alloy chemically method for oxidation, adopt the chemical oxidation solution of forming by chromic anhydride, fluorochemical, the Tripotassium iron hexacyanide, tensio-active agent, rare elements etc., and use this solution to carry out the technical process of chemical oxidation.Erosion resistance height of the present invention reaches ISO and many GJB fully.Solution is good and cheap, and easy maintenance is made in stable performance, not only can carry out dip-coating but also can brush, and technical process is simple and reliable.
Description
The present invention relates to a kind of improved aluminium and aluminum alloy surface guard method.
Surface to aluminium and aluminium alloy is protected, and the problem of most critical is the development of chemical oxidation solution.According to " aluminium and aluminum alloy surface are handled and finish (SWernick 1972), and the serial chemical oxidizing solution of A Luoding (Alodine) series and A Luo Dinke rom (Alocrome) is abroad arranged, and 1. 75%H of six kinds of patent formulations that have a technique and skill is arranged
3PO
4Contain 64 gram/liters, CrO
3Contain 10 gram/liters.2. 75%H
3PO
412 gram/liters are arranged, and NaF has 3.1 gram/liters, CrO
33.6 gram/liters are arranged.3. 75%H
3PO
424 gram/liters are arranged, and NaF contains 5 gram liters, CrO
34. NaH of 6.8 gram/liters is arranged
2PO
4H
2O has 31.8 gram/liters, and NaF has 5 gram/liters, K
2Cr
2O
710.6 gram/liters are arranged, and HCI has 4.8 gram/liters.5. NaH
2PO
4H
2O has 66.5 gram/liters, NaHF
24.2 gram/liters are arranged, K
2Cr
2O
7Contain 14.7 gram/liters, H
2SO
4Have 4.8 to restrain 6. NaH
2PO
4H
2O has 31.8 gram/liters, AlF
35 gram/liters are arranged.K
2Cr
2O
710.6 gram/liters are arranged, and HCl has 4.6 gram/liters.It is yellow and colourless two kinds that the oxidation film layer that above chemical oxidation solution forms on aluminum or aluminum alloy surface is rice, and its salt spray resistance all reaches 168 hours international standard (ISO).China has been developed into and is leveraged to modern chemical oxidation solution since the sixties, be to adopt 50～60 milliliters/liter phosphoric acid, the chromic anhydride of 20～25 grams per liters, the ammonium bifluoride of 3～3.5 grams per liters, the Secondary ammonium phosphate of 2～2.5 grams per liters, the solution that 0.6～1.2 grams per liter boric acid is formed, its pH value is 1.5～2.2, under 30 °～40 ℃ situations of temperature, the time is making in 2～8 minutes.This prescription solids content is higher, objectionable impurities CrO
3Content is bigger, and the oxidation film corrosion resistance of its formation is lower, and salt spray resistance is up to 90 hours, and minimum have only 36 hours.Reach the chemical oxidation solution that ISO person can only use import for product requirement.
The objective of the invention is to develop a kind of performance and reach ISO, cheap and good-quality aluminium and the aluminum alloy chemically oxidizing solution of being applicable to, and the chemical oxidation method of corresponding technical process.
The present invention finishes the work as follows: chemical oxidation liquid is to have adopted chromic anhydride 3.7～6.7 grams per liters, fluorochemical 1～3 grams per liter, the Tripotassium iron hexacyanide 0.5～5 grams per liter, tensio-active agent 0.5～3 grams per liter rare elements 0.05～0.5 grams per liter, it is in forming for deionized water, uniform mixing under room temperature state hour just can use its PH=1.2～2.0 surplus putting 20, and the chemical oxidation time is dip-coating in 1～3 minute, brushes and all can.Aluminium and aluminum alloy chemically oxidizing process flow process are that (1) uses aqueous cleaning agent, (2) using 40～50 ℃ of hot water wash (3) to wash (4) in the cold water that flows carries out pickling (5) and places the cold water that flows to clean (6) to wash (7) with deionized water and use formula solution of the present invention to carry out chemical oxidation, dip-coating or brushing, promptly all finish through 30 minutes dryings under 50～60 ℃ of states (8).
The objectionable impurities chromic anhydride content reduces greatly in the chemical oxidation solution of the present invention, and pollution reduces, and price reduces by 2/3 than this domestic product, and external product is longer than in stable performance work-ing life, has used ten months performances still not change, and makes and safeguard simply.The technology oxide film is the rice yellow, and salt spray resistance reached the military standard of ISO and many countries fully greater than 168 hours, and is good with the oiling bonding force, and film heavily surpasses relevant regulations.Corresponding in addition processing method is also simple, but the easy to operate characteristics that have not only dip-coating but also can brush are applicable to the requirement of kinds of processes, require anti-corrosion product needn't depend on import chemical oxidation solution again.
Claims (1)
1, a kind of aluminium and alloy method for oxidation is characterized in that;
A, chemical oxidation solution are the chromic anhydrides by 3.7～6.7 grams per liters, 1～3 grams per liter fluorochemical, and 0.5～0.05 grams per liter Tripotassium iron hexacyanide, tensio-active agent 0.5～3 grams per liter, 0.05～0.05 grams per liter rare elements is formed,
B, chemical oxidation process flow process are that (1) uses the aqueous cleaning agent situation, (2) use 40 °～50 ℃ hot water wash, (3) in the cold water that flows, wash (4) and carry out pickling, (5) place the cold water that flows to clean, (6) use washed with de-ionized water, (7) carry out chemical oxidation dip-coating or brushing, (8) carry out drying under 50 °～60 ℃ states
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89104371 CN1039626A (en) | 1989-06-30 | 1989-06-30 | The method of a kind of aluminium and aluminum alloy chemically oxidation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89104371 CN1039626A (en) | 1989-06-30 | 1989-06-30 | The method of a kind of aluminium and aluminum alloy chemically oxidation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1039626A true CN1039626A (en) | 1990-02-14 |
Family
ID=4855534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89104371 Pending CN1039626A (en) | 1989-06-30 | 1989-06-30 | The method of a kind of aluminium and aluminum alloy chemically oxidation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1039626A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053020C (en) * | 1994-12-30 | 2000-05-31 | 邵天敏 | Method for preparing aluminium and aluminium alloy surface coating |
| 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 |
| CN103184445A (en) * | 2011-12-28 | 2013-07-03 | 上海航天精密机械研究所 | Chemical oxidation solution composition for aluminium-alloy surface and chemical oxidation process |
| CN104313560A (en) * | 2014-10-29 | 2015-01-28 | 天津晶宏电子材料有限公司 | Surface treatment method for aluminum board |
| WO2017161582A1 (en) * | 2016-03-25 | 2017-09-28 | 深圳市恒兆智科技有限公司 | Aluminum material filming agent, aluminum material, and surface filming processing method therefor |
| CN108723576A (en) * | 2018-05-25 | 2018-11-02 | 合肥工业大学 | A kind of processing method of aluminium alloy microwave liquid cooled module |
-
1989
- 1989-06-30 CN CN 89104371 patent/CN1039626A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053020C (en) * | 1994-12-30 | 2000-05-31 | 邵天敏 | Method for preparing aluminium and aluminium alloy surface coating |
| 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 |
| CN103184445A (en) * | 2011-12-28 | 2013-07-03 | 上海航天精密机械研究所 | Chemical oxidation solution composition for aluminium-alloy surface and chemical oxidation process |
| CN104313560A (en) * | 2014-10-29 | 2015-01-28 | 天津晶宏电子材料有限公司 | Surface treatment method for aluminum board |
| WO2017161582A1 (en) * | 2016-03-25 | 2017-09-28 | 深圳市恒兆智科技有限公司 | Aluminum material filming agent, aluminum material, and surface filming processing method therefor |
| CN108723576A (en) * | 2018-05-25 | 2018-11-02 | 合肥工业大学 | A kind of processing method of aluminium alloy microwave liquid cooled module |
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| 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 |