CN101210322A - Magnesium alloy surface chemical treatment solution and treatment method thereof - Google Patents
Magnesium alloy surface chemical treatment solution and treatment method thereof Download PDFInfo
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- CN101210322A CN101210322A CNA2006101324465A CN200610132446A CN101210322A CN 101210322 A CN101210322 A CN 101210322A CN A2006101324465 A CNA2006101324465 A CN A2006101324465A CN 200610132446 A CN200610132446 A CN 200610132446A CN 101210322 A CN101210322 A CN 101210322A
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Abstract
The invention provides a surface formation treatment solution of magnesium alloy and a treatment method thereof, wherein the solution contains water as solvent, manganese nitrate 10 to 50 g/L, manganese dihydrogen phosphate 10 to 100 g/L, sodium fluoride 1 to 10 g/L, nickel nitrate 1 g/L, ethylenediaminetetraacetic acid disodium 20 g/L, calcium oxide 1 g/L, triethanolamine 20 to 50 g/L, alkylphenol ethoxylate 2 g/L, sodium nitrite 2 g/L, and phosphoric acid for adjusting pH value to 2 to 6. Additionally, the treatment method comprises alkaline washing, ultrasonic water washing, acid washing, ultrasonic water washing, surface conditioning, formation treatment, ultrasonic water washing and drying, wherein the formation treatment is carried out in the formation treatment solution at 20 to 100 DEG C for 30 min. The chemical conversion film obtained by the method has the advantages of good adhesion, high corrosion performance and good surface flatness.
Description
Technical field
The present invention relates to a kind of process for treating surface, relate in particular to a kind of magnesium alloy surface treatment process.
Background technology
Magnesium alloy is because light than engineering plastics, and along with consumption electronic products tend to lightweight and slimming gradually, it becomes main basic material in consumption electronic products such as notebook, mobile phone, PDA and the projector gradually, has been the up-and-coming youngster of electronics and IT products material at present.The Application of Magnesium scope enlarges rapidly, and it is more and more important that the surface treatment of magnesium alloy also seems, its surface treatment mainly is to improve product appearance and improve wear-resisting and antiseptic property.
Because Mg alloy surface is very active, the oxidation that is corroded easily, if handle and directly application without chemical conversion film, paint film drops easily, sticking power is undesirable, causes the difficulty in the application.Conventional magnesium alloy chemical treatment process, complex process, the difficult control of process, operational difficulty, and often have sexavalent chrome and hydrofluoric acid have harm to human body and environment material in the Passivation Treatment.
In addition; particularly AZ31B wrought magnesium alloys corrosion resistance is poor; traditional phosphatization liquid carries out general chemistry and transforms (being phosphatization) on its surface; the purpose that is difficult to reach the inter process protection against corrosion and improves external coating sticking power; therefore, a kind of environmental protection chemical synthesis technology that is adapted to this model magnesium alloy of exploitation is very meaningful.
Summary of the invention
In view of the above problems, main purpose of the present invention is to provide a kind of magnesium alloy surface treatment process, and this technological operation is simple, is beneficial to environmental protection.
In order to achieve the above object, the invention provides a kind of Mg alloy surface and change into treatment soln, this solution pH value is adjusted to 2～6 with phosphoric acid, and is solvent with water, and every liter of solution comprises:
Manganous nitrate 10～50 grams;
Phosphate dihydrogen manganese 10～100 grams;
Sodium Fluoride 1～10 gram;
Nickelous nitrate 1 gram;
Disodium ethylene diamine tetraacetate 20 grams;
Calcium oxide 1 gram;
Triethanol ammonium 20～50 grams;
Alkylphenol polyoxyethylene 2 grams;
Sodium Nitrite 2 grams.
In addition, the present invention also provides a kind of surface treatment method of Mg alloy, and the basic procedure of this method is: processing → baking is transferred → changed into to pre-treatment → table, and this method specifically may further comprise the steps:
A. the impurity and the oxide film on magnesium alloy component surface are removed in pre-treatment;
B. table is transferred, and will impregnated in a table through the magnesium alloy component of above-mentioned pre-treatment and transfer in the solution, and it is general oxyhydroxide that described table is transferred solution;
C. change into processing, will impregnated in above-mentioned Mg alloy surface through the magnesium alloy component that abovementioned steps is handled and change in the treatment soln;
D. baking will be cleaned through the magnesium alloy component of above-mentioned processing and dry.
Wherein, described pre-treatment step preferably adopts successively by alkali cleaning, with ultrasonic wave washed with de-ionized water, pickling and wash with the ultrasonic wave deionization and carry out.Need carry out clean between above-mentioned per two steps, adopting deionized water ultrasonic cleaning, common pure water to clean all can, described table transfers solution to be preferably sodium hydroxide or potassium hydroxide, describedly changes into that treatment temp is 20 ℃～100 ℃ in the processing, and the treatment time is 30 minutes.
Above-mentioned technical scheme provides a kind of Mg alloy surface to change into treatment soln and treatment process, the resulting chemical films strong adhesion of the present invention, and profile pattern is good, and asepsis environment-protecting, has improved the corrosion resistance of Mg alloy surface greatly.
Embodiment
Embodiment 1:
Press following formulated solution:
Earlier by the following raw material that takes by weighing:
Manganous nitrate 40 grams;
Phosphate dihydrogen manganese 90 grams;
Sodium Fluoride 9 grams;
Nickelous nitrate 1 gram;
Disodium ethylene diamine tetraacetate 20 grams;
Calcium oxide 1 gram;
Triethanol ammonium 45 grams;
Alkylphenol polyoxyethylene 2 grams;
Sodium Nitrite 2 grams.
Make described Mg alloy surface and change into treatment soln the above-mentioned raw material that takes by weighing is soluble in water again, and the pH value of the solution of gained is adjusted to 5 with phosphoric acid.
Get an AZ31B wrought magnesium alloys sample then, earlier carry out sandblast and deionized water ultrasonic cleaning at sample surfaces, the impurity that it is surperficial removes, the magnesium alloy sample that will clean then impregnated in the basic solution, the degreasing of deoiling, magnesium alloy that again will be after alkali cleaning is by ultrasonic wave deionized water wash clean, and then the magnesium alloy after will cleaning impregnated in the acidic solution, in order to remove Mg alloy surface impurity and oxide compound, and by ultrasonic wave with deionized water with the magnesium alloy wash clean, at last will the magnesium alloy after above-mentioned steps is handled impregnated in above-mentioned Mg alloy surface changes in the treatment soln, its treatment temp is 80 ℃, treatment time is 30 minutes, toasts after involving this magnesium alloy of deionized water wash clean with ultrasonic.By the resulting chemical conversion rete of this embodiment, its sticking power is good, and corrosion resistance is good, and profile pattern is good.
Embodiment 2:
Press following formulated solution:
Earlier by the following raw material that takes by weighing:
Manganous nitrate 30 grams;
Phosphate dihydrogen manganese 50 grams;
Sodium Fluoride 8 grams;
Nickelous nitrate 1 gram;
Disodium ethylene diamine tetraacetate 20 grams;
Calcium oxide 1 gram;
Triethanol ammonium 30 grams;
Alkylphenol polyoxyethylene 2 grams;
Sodium Nitrite 2 grams.
Make described Mg alloy surface and change into treatment soln the above-mentioned raw material that takes by weighing is soluble in water again, and the pH value of the solution of gained is adjusted to 5 with phosphoric acid.
Get an AZ31B wrought magnesium alloys sample then, earlier carry out sandblast and deionized water ultrasonic cleaning at sample surfaces, the impurity that it is surperficial removes, the magnesium alloy sample that will clean then impregnated in the basic solution, the degreasing of deoiling, magnesium alloy that again will be after alkali cleaning is by ultrasonic wave deionized water wash clean, and then the magnesium alloy after will cleaning impregnated in the acidic solution, in order to remove Mg alloy surface impurity and oxide compound, and by ultrasonic wave with deionized water with the magnesium alloy wash clean, at last will the magnesium alloy after above-mentioned steps is handled impregnated in above-mentioned Mg alloy surface changes in the treatment soln, its treatment temp is 100 ℃, treatment time is 30 minutes, toasts after involving this magnesium alloy of deionized water wash clean with ultrasonic.By the resulting chemical conversion rete of this embodiment, its sticking power is good, and corrosion resistance is good, and profile pattern is good.
Claims (7)
1. a Mg alloy surface changes into treatment soln, it is characterized in that, and this solution pH value is 2～6, and with water solvent, every liter of solution comprises:
Manganous nitrate 10～50 grams;
Phosphate dihydrogen manganese 10～100 grams;
Sodium Fluoride 1～10 gram;
Nickelous nitrate 1 gram;
Disodium ethylene diamine tetraacetate 20 grams;
Calcium oxide 1 gram;
Triethanol ammonium 20～50 grams;
Alkylphenol polyoxyethylene 2 grams;
Sodium Nitrite 2 grams.
2. Mg alloy surface according to claim 1 changes into treatment soln, it is characterized in that, and this solution pH value is 2～6, and with water solvent, the screening formulation that described Mg alloy surface changes into treatment soln is:
Manganous nitrate 40 grams;
Phosphate dihydrogen manganese 90 grams;
Sodium Fluoride 9 grams;
Nickelous nitrate 1 gram;
Disodium ethylene diamine tetraacetate 20 grams;
Calcium oxide 1 gram;
Triethanol ammonium 45 grams;
Alkylphenol polyoxyethylene 2 grams;
Sodium Nitrite 2 grams.
3. a surface treatment method of Mg alloy is characterized in that, this method specifically may further comprise the steps:
A. the impurity and the oxide film on magnesium alloy component surface are removed in pre-treatment;
B. table is transferred, and will impregnated in a table through the magnesium alloy component of above-mentioned pre-treatment and transfer in the solution, and it is general oxyhydroxide that described table is transferred solution;
C. change into processing, will impregnated in above-mentioned Mg alloy surface through the magnesium alloy component that abovementioned steps is handled and change in the treatment soln;
D. baking will be dried through changing into the magnesium alloy component of handling.
4. surface treatment method of Mg alloy according to claim 3 is characterized in that, need carry out clean between above-mentioned per two steps, adopts deionized water ultrasonic cleaning, common pure water to clean and all can.
5. surface treatment method of Mg alloy according to claim 3 is characterized in that, above-mentioned table transfers solution to be preferably sodium hydroxide or potassium hydroxide.
6. surface treatment method of Mg alloy according to claim 3 is characterized in that, above-mentionedly changes into that treatment temp is 20 ℃～100 ℃ in the processing, and the treatment time is 30 minutes.
7. surface treatment method of Mg alloy according to claim 3 is characterized in that, described pre-treatment step preferably adopts successively by alkali cleaning, with ultrasonic wave washed with de-ionized water, pickling and wash with the ultrasonic wave deionization and carry out.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2006101324465A CN101210322B (en) | 2006-12-29 | 2006-12-29 | Magnesium alloy surface chemical treatment solution and treatment method thereof |
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| CN2006101324465A CN101210322B (en) | 2006-12-29 | 2006-12-29 | Magnesium alloy surface chemical treatment solution and treatment method thereof |
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| CN101210322A true CN101210322A (en) | 2008-07-02 |
| CN101210322B CN101210322B (en) | 2010-08-18 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104046977A (en) * | 2013-03-12 | 2014-09-17 | 富准精密工业(深圳)有限公司 | Magnesium alloy forming method |
| CN106222679A (en) * | 2016-08-29 | 2016-12-14 | 东莞宜安科技股份有限公司 | A kind of magnesium alloy die casting surface treatment method |
| CN110578138A (en) * | 2018-06-08 | 2019-12-17 | 施耐宝公司 | Corrosion and scratch resistance of steel member |
| CN115216762A (en) * | 2022-06-17 | 2022-10-21 | 山西银光华盛镁业股份有限公司 | Chemical phosphorization method generally used for magnesium alloy |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2643367B1 (en) * | 1989-02-21 | 1991-08-30 | Inst Francais Du Petrole | PROCESS FOR EXTRACTING NORMAL N-BUTYRIC ACID OBTAINED BY FERMENTATION |
| IT1274594B (en) * | 1994-08-05 | 1997-07-18 | Itb Srl | ACID WATER PHOSPHATIC SOLUTION AND METALLIC SURFACE PHOSPHATION PROCESS USING IT |
| DE19621184A1 (en) * | 1996-05-28 | 1997-12-04 | Henkel Kgaa | Zinc phosphating with integrated post-passivation |
| JP2001172774A (en) * | 1999-12-14 | 2001-06-26 | Mitsui Mining & Smelting Co Ltd | Solution of chemical conversion treatment for aluminum- containing magnesium alloy, high corrosion resistance surface treated magnesium alloy product and producing method therefor |
-
2006
- 2006-12-29 CN CN2006101324465A patent/CN101210322B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104046977A (en) * | 2013-03-12 | 2014-09-17 | 富准精密工业(深圳)有限公司 | Magnesium alloy forming method |
| CN104046977B (en) * | 2013-03-12 | 2017-02-22 | 富准精密工业(深圳)有限公司 | Magnesium alloy forming method |
| CN106222679A (en) * | 2016-08-29 | 2016-12-14 | 东莞宜安科技股份有限公司 | A kind of magnesium alloy die casting surface treatment method |
| CN110578138A (en) * | 2018-06-08 | 2019-12-17 | 施耐宝公司 | Corrosion and scratch resistance of steel member |
| US11326259B2 (en) | 2018-06-08 | 2022-05-10 | Snap-On Incorporated | Corrosion and mar resistance of steel components |
| CN115216762A (en) * | 2022-06-17 | 2022-10-21 | 山西银光华盛镁业股份有限公司 | Chemical phosphorization method generally used for magnesium alloy |
| CN115216762B (en) * | 2022-06-17 | 2023-12-26 | 山西银光华盛镁业股份有限公司 | Chemical phosphating method for magnesium alloy |
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| CN101210322B (en) | 2010-08-18 |
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