CN107245710A - A kind of environmentally friendly surface treatment liquid of magnesium alloy - Google Patents
A kind of environmentally friendly surface treatment liquid of magnesium alloy Download PDFInfo
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- CN107245710A CN107245710A CN201710331054.XA CN201710331054A CN107245710A CN 107245710 A CN107245710 A CN 107245710A CN 201710331054 A CN201710331054 A CN 201710331054A CN 107245710 A CN107245710 A CN 107245710A
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- Prior art keywords
- treatment liquid
- surface treatment
- magnesium alloy
- environmentally friendly
- acid
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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
- C23C22/40—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
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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 belongs to Mg alloy surface processing technique field, and in particular to a kind of environmentally friendly surface treatment liquid of magnesium alloy, and its pH value is 3.2 3.6, comprising：Tungsten salt, water-soluble resin, fluoride, organic compound, phenolsulfonic acid, sodium gluconate, metal inhibitor, binding agent, water.The present invention has advantages below compared with prior art：Metal surface is handled using hydrogen peroxide and poly phosphoric acid solution in the present invention, Mg alloy surface can be activated while degreasing, compared to the simpler easily operation of existing method, the rate of film build and film-formation result improved in subsequent operation is can aid in；It is oxidant and chromium ion pollution on the environment to avoid nitrite ion or permanganate, and the envelope adhesive force formed in Mg alloy surface is strong, has stronger corrosion resistance, disclosure satisfy that production requirement.
Description
Technical field
The invention belongs to Mg alloy surface processing technique field, and in particular to a kind of environmentally friendly surface treatment liquid of magnesium alloy.
Background technology
Magnesium alloy has the excellent performance such as low-density, high specific stiffness and specific strength, but is due to magnesium alloy chemical activity
High, electrode potential is low, and therefore, the corrosion proof method of aluminium alloy mainly has chemical conversion film process, anodic oxidation, plasma micro-arc
Anodic oxidation, surface penetration, Laser Surface Treatment etc., wherein chemical conversion film process make one of magnesium alloy surface protective effectively
Method, chemical conversion film process can be divided mainly into Cr VI in two kinds of chromaking processing and Trend of Chrome-free processing, but chromaking processing can be tight
Heavily contaminated environment, phosphorating treatment is to replace one of method of poisonous chromic acid salt treatment, and existing parkerizing method is in phosphorus
Change to add nitrite ion or permanganate in liquid and be reduced as oxidant and accelerate phosphorization, but nitrite anions from
Son is poisonous, accordingly, it would be desirable to further be studied relevant treatment liquid for problem above.
The content of the invention
The purpose of the present invention is that there is provided a kind of environmentally friendly surface treatment liquid of magnesium alloy for existing issue.
The present invention is achieved by the following technical solutions：A kind of environmentally friendly surface treatment liquid of magnesium alloy, its pH value is
3.2-3.6, include by weight percentage：Tungsten salt 6-10%, water-soluble resin 3-4%, fluoride 4-7%, organic compound 2-
3%th, phenolsulfonic acid 0.4-0.7%, sodium gluconate 0.1-0.4%, metal inhibitor 0.2-0.5%, binding agent 0.2-0.4%, surplus
For water；
Its application method comprises the following steps：
（1）Pending Mg alloy surface is worn away to any surface finish, the hydrogen peroxide for being then 7.5-12% with mass concentration is in temperature
To be rinsed 3-5 minutes under conditions of 40-45 DEG C, then wash standby；
（2）It is squeegeed onto with the Electric brush of bristles for being moistened with the poly phosphoric acid solution that mass concentration is 4-7% in Mg alloy surface, it is described
Hairbrush is disc brush, and brush filament is pig hair, and the rotating speed of Electric brush of bristles is 600-800 revs/min, and each piece of area is contacted with hairbrush
Time be 4-10 seconds；
（3）Then be 35-40 DEG C of surface treatment liquid spray process by temperature, after the completion of use deionized water rinsing, drying.
As further improvement of these options, the water-soluble resin be Lauxite, melamine resin,
Any one in resol, polyvinyl alcohol or poly N-vinyl pyrrolidone；The fluoride is dysprosium fluoride, fluorination
Lutetium, cerium fluoride are mixed in any proportion；The organic compound is citric acid, sodium phytate, triethanolamine, flaxseed acid or oxalic acid
In any one；The phenolsulfonic acid is p-hydroxybenzenyl sulfonate；The binding agent is polyvinyl butyral resin.
As further improvement of these options, the acid of the regulation surface treatment liquid pH value is phosphoric acid.
As further improvement of these options, the temperature of the poly phosphoric acid solution is 55-60 DEG C.
The present invention has advantages below compared with prior art：Using hydrogen peroxide and poly phosphoric acid solution to metal in the present invention
Surface is handled, and can activate Mg alloy surface while degreasing, compared to the simpler easily operation of existing method, can aid in
Improve the rate of film build and film-formation result in subsequent operation；Avoid nitrite ion or permanganate be oxidant and
Chromium ion pollution on the environment, it is strong in the envelope adhesive force of Mg alloy surface formation, there are stronger corrosion resistance, Neng Gouman
Sufficient production requirement.
Brief description of the drawings
Fig. 1 is Electric brush of bristles structural representation of the present invention.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings.
As shown in fig. 1, a kind of environmentally friendly surface treatment liquid of magnesium alloy, its pH value is 3.2-3.6, is wrapped by weight percentage
Contain：Tungsten salt 8%, poly N-vinyl pyrrolidone 4%, fluoride 6%, flaxseed acid 2%, p-hydroxybenzenyl sulfonate 0.4%, glucose
Sour sodium 0.4%, metal inhibitor 0.2%, polyvinyl butyral resin 0.4%, surplus is water；
Its application method comprises the following steps：
（1）Pending Mg alloy surface is worn away to any surface finish, the hydrogen peroxide for being then 7.5-12% with mass concentration is in temperature
To be rinsed 3-5 minutes under conditions of 40-45 DEG C, then wash standby；
（2）It is squeegeed onto with the Electric brush of bristles for being moistened with the poly phosphoric acid solution that mass concentration is 4-7% in Mg alloy surface, it is described
Hairbrush is disc brush 1, and brush filament 2 is pig hair, and the rotating speed of Electric brush of bristles is 600-800 revs/min, each piece of area（Refer to need
Workpiece 4 to be processed）The time contacted with hairbrush is 4-10 seconds, and poly phosphoric acid solution is stored in reservoir 3 in figure；
（3）Then be 35-40 DEG C of surface treatment liquid spray process by temperature, after the completion of use deionized water rinsing, drying.
Surface treatment liquid is tested by standard technique Services Co., Ltd SGS in the present invention, and its each material content is combined Europe
The limitation requirement of alliance's relevant criterion, the magnesium alloy plate through being handled in the present invention, its anti-impact force, paint adhesion and magnesium alloy table
The corrosion resistance in face meets relevant criterion, and environment will not be polluted in process；
Specifically, the outer overlay film of magnesium alloy is uniform, there are enough combination anchor points between matrix and film, with reference to firm, be not easily stripped, adopt
Use Unite States Standard（ASTM）It is not peeling-off after D3359-09 [14] detections；Entered using electro-chemical test at 25 DEG C in SBF
OK, retain 1cm2, electrochemical impedance test after 30 days, does not occur corrosion failure phenomenon, coating maintain preferable integrality and
Planarization.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (4)
1. the environmentally friendly surface treatment liquid of a kind of magnesium alloy, it is characterised in that its pH value is 3.2-3.6, is included by weight percentage：
Tungsten salt 6-10%, water-soluble resin 3-4%, fluoride 4-7%, organic compound 2-3%, phenolsulfonic acid 0.4-0.7%, glucose
Sour sodium 0.1-0.4%, metal inhibitor 0.2-0.5%, binding agent 0.2-0.4%, surplus is water；
Its application method comprises the following steps：
（1）Pending Mg alloy surface is worn away to any surface finish, the hydrogen peroxide for being then 7.5-12% with mass concentration is in temperature
To be rinsed 3-5 minutes under conditions of 40-45 DEG C, then wash standby；
（2）It is squeegeed onto with the Electric brush of bristles for being moistened with the poly phosphoric acid solution that mass concentration is 4-7% in Mg alloy surface, it is described
Hairbrush is disc brush, and brush filament is pig hair, and the rotating speed of Electric brush of bristles is 600-800 revs/min, and each piece of area is contacted with hairbrush
Time be 4-10 seconds；
（3）Then be 35-40 DEG C of surface treatment liquid spray process by temperature, after the completion of use deionized water rinsing, drying.
2. the environmentally friendly surface treatment liquid of a kind of magnesium alloy as claimed in claim 1, it is characterised in that the water-soluble resin is urea
It is any one in urea formaldehyde, melamine resin, resol, polyvinyl alcohol or poly N-vinyl pyrrolidone
Kind；The fluoride is dysprosium fluoride, fluorination lutetium, cerium fluoride are mixed in any proportion；The organic compound is citric acid, phytic acid
Sodium, triethanolamine, flaxseed acid or oxalic acid in any one；The phenolsulfonic acid is p-hydroxybenzenyl sulfonate；The binding agent
For polyvinyl butyral resin.
3. a kind of environmentally friendly surface treatment liquid of magnesium alloy as claimed in claim 1, it is characterised in that the regulation surface treatment liquid
The acid of pH value is phosphoric acid.
4. the environmentally friendly surface treatment liquid of a kind of magnesium alloy as claimed in claim 1, it is characterised in that the poly phosphoric acid solution
Temperature is 55-60 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710331054.XA CN107245710A (en) | 2017-05-11 | 2017-05-11 | A kind of environmentally friendly surface treatment liquid of magnesium alloy |
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| CN201710331054.XA CN107245710A (en) | 2017-05-11 | 2017-05-11 | A kind of environmentally friendly surface treatment liquid of magnesium alloy |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029387A (en) * | 2007-04-09 | 2007-09-05 | 湖南大学 | Production of magnesium-alloy surface molybdate phosphate composite transferring film |
| CN101215700A (en) * | 2007-01-06 | 2008-07-09 | 苏州汉扬精密电子有限公司 | Magnesium alloy chemical synthesis treatment liquid |
| CN102660736A (en) * | 2012-05-16 | 2012-09-12 | 广州有色金属研究院 | Magnesium alloy surface conversion treatment liquid and treatment method thereof |
| CN103160822A (en) * | 2011-12-08 | 2013-06-19 | 沈阳工业大学 | Fluorine-free phosphating process of AZ91 magnesium alloy |
| CN104342682A (en) * | 2013-07-25 | 2015-02-11 | 无锡市石塘湾工业园区开发建设有限公司 | Magnesium alloy work-piece surface anti-corrosion conversion film treatment liquid |
| CN104342683A (en) * | 2013-07-25 | 2015-02-11 | 无锡市石塘湾工业园区开发建设有限公司 | Magnesium alloy work-piece surface anti-corrosion conversion film treatment process |
| CN104357821A (en) * | 2014-10-24 | 2015-02-18 | 无锡伊佩克科技有限公司 | Steel surface treatment liquid |
| CN104372322A (en) * | 2014-10-24 | 2015-02-25 | 无锡伊佩克科技有限公司 | Chromium-free steel surface treating liquid |
| CN104451628A (en) * | 2014-12-08 | 2015-03-25 | 江阴宝易德医疗科技有限公司 | Magnesium alloy chemical conversion treatment solution and method for treating surface of magnesium alloy |
| CN105256300A (en) * | 2015-11-19 | 2016-01-20 | 佛山市湾厦新材料科技有限公司 | Stainless steel tungstate passivator and application thereof |
| CN106086851A (en) * | 2016-08-10 | 2016-11-09 | 天长市润达金属防锈助剂有限公司 | A kind of corrosion-resistant long-acting antirust liquid |
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2017
- 2017-05-11 CN CN201710331054.XA patent/CN107245710A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215700A (en) * | 2007-01-06 | 2008-07-09 | 苏州汉扬精密电子有限公司 | Magnesium alloy chemical synthesis treatment liquid |
| CN101029387A (en) * | 2007-04-09 | 2007-09-05 | 湖南大学 | Production of magnesium-alloy surface molybdate phosphate composite transferring film |
| CN103160822A (en) * | 2011-12-08 | 2013-06-19 | 沈阳工业大学 | Fluorine-free phosphating process of AZ91 magnesium alloy |
| CN102660736A (en) * | 2012-05-16 | 2012-09-12 | 广州有色金属研究院 | Magnesium alloy surface conversion treatment liquid and treatment method thereof |
| CN104342682A (en) * | 2013-07-25 | 2015-02-11 | 无锡市石塘湾工业园区开发建设有限公司 | Magnesium alloy work-piece surface anti-corrosion conversion film treatment liquid |
| CN104342683A (en) * | 2013-07-25 | 2015-02-11 | 无锡市石塘湾工业园区开发建设有限公司 | Magnesium alloy work-piece surface anti-corrosion conversion film treatment process |
| CN104357821A (en) * | 2014-10-24 | 2015-02-18 | 无锡伊佩克科技有限公司 | Steel surface treatment liquid |
| CN104372322A (en) * | 2014-10-24 | 2015-02-25 | 无锡伊佩克科技有限公司 | Chromium-free steel surface treating liquid |
| CN104451628A (en) * | 2014-12-08 | 2015-03-25 | 江阴宝易德医疗科技有限公司 | Magnesium alloy chemical conversion treatment solution and method for treating surface of magnesium alloy |
| CN105256300A (en) * | 2015-11-19 | 2016-01-20 | 佛山市湾厦新材料科技有限公司 | Stainless steel tungstate passivator and application thereof |
| CN106086851A (en) * | 2016-08-10 | 2016-11-09 | 天长市润达金属防锈助剂有限公司 | A kind of corrosion-resistant long-acting antirust liquid |
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Application publication date: 20171013 |