CN103898586A - Magnesium alloy surface electrochromism combination solution for pre-electroplated zinc-nickel alloy - Google Patents
Magnesium alloy surface electrochromism combination solution for pre-electroplated zinc-nickel alloy Download PDFInfo
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- CN103898586A CN103898586A CN201310220251.6A CN201310220251A CN103898586A CN 103898586 A CN103898586 A CN 103898586A CN 201310220251 A CN201310220251 A CN 201310220251A CN 103898586 A CN103898586 A CN 103898586A
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Abstract
The invention discloses a magnesium alloy surface electrochromism combination solution for a pre-electroplated zinc-nickel alloy. The combination solution is characterized by comprising an electroplated zinc-nickel plating solution and an electrochromism plating solution. The components of the electroplated zinc-nickel plating solution and the electrochromism plating solution are adjusted, and toxic and high-pollution components are not adopted, so that the plating process is environment-friendly and safe, and the prepared coating is high in corrosion resistance, beautiful in appearance and high in binding force of a substrate and the coating.
Description
Technical field
The present invention relates to electroplating technology field, relate in particular to a kind of Mg alloy surface electrodeposited chromium combination solution of pre-electroplated zinc nickel alloy.
Background technology
Magnesium alloy, as a kind of lightweight engineered structured material, has high specific strength, high specific stiffness and superior damping performance, and field has a wide range of applications in fields such as traffic, communication, Aeronautics and Astronautics.But magnesium alloy chemical activity is high, and electropotential is low, surface film oxide is loose, causes barrier propterty low, has restricted the application and development of magnesium alloy.Cause thus the concern of people to magnesium alloy part surface corrosion and protection, carry out a large amount of research at aspects such as Mg alloy surface anodic oxidation, chemical conversion film, organic coating, coating surfaces, particularly adopt that method for electroplating nickel is low as a kind of cost, technique is simple, the surface coating technique of easy handling, has become the important research direction of people to magnesium alloy surface protective.
At present, the electro-plating method of magnesium alloy could start to electroplate other metal after being mainly zinc-plated, pre-copper facing in advance, and most of for electroplating containing cyanogen.For example, what generally adopt both at home and abroad now is the standard method of the plated metal Ni of U.S. ASTM recommendation, is the zinc plating method of soaking of Dow company exploitation, and its pre-treatment has adopted soaks zinc and cyanide copper plating technique.But, this complex technical process, repeatability is poor, uses prussiate, and plating solution is poisonous, contaminate environment, the bright property of coating and the stability of plating solution also need further improvement.
In order to overcome the shortcoming of complex process, software engineering researchers invent has gone out direct electroless nickel method, as adopted chromic anhydride to carry out etch to magnesium alloy in JP2003073843, after fluorochemical activation, carry out chemical nickel plating, with ammoniacal liquor regulate chemical nickel-plating liquid make it be weakly alkaline, once obtained bonding force good, the chemical Ni-plating layer that solidity to corrosion is high, the high employing in patent CN1699634A magnesium alloy plating method of Li De goes wadding → electrochemical deoiling → bright dipping → neutralization → activation → pre-zincincation to obtain reasonable pre-zinc coating, and pre-galvanizing flux is without cyanogen, nontoxic, harmless, the people such as Yang Noboru are in patent CN1737205A, by Direct Electroplating aluminium after dense hydrofluoric acid used for magnesium alloy (11%) pickling, obtain reasonable aluminium coat, Chinese patent CN1641075A is to magnesium, the surface of magnesium alloy or activating treatment process and plated surface method were done detailed description, although these techniques have all departed from prussiate plating, but the mostly improvement of the technique based on to DOW for the treatment of process before electroplating.
Summary of the invention
The object of the invention is to propose a kind of Mg alloy surface electrodeposited chromium combination solution of pre-electroplated zinc nickel alloy, by the adjustment to electro-galvanizing nickel plating bath and electrodeposited chromium bath composition, do not adopt poisonous, pollute high component, make plating technic Environmental Safety, and the corrosion-resistant height of coating of preparation, appearance looks elegant, matrix and binding force of cladding material are high.
For reaching this object, the present invention by the following technical solutions:
A Mg alloy surface electrodeposited chromium combination solution for pre-electroplated zinc nickel alloy, described combination solution comprises electro-galvanizing nickel plating bath and electrodeposited chromium plating solution, wherein electro-galvanizing nickel plating bath consists of: ZnSO
47H
2o32-36g/L, NiSO
46H
2o15-19g/L, sodium sulfate 43-47g/L, K
4p
2o
73H
2o164-168g/L, KF18-20g/L, C
6h
17o
7n
332-36g/L, phytic acid 0.4-0.6g/L, H
2cSNH
2: 4-6g/L, surplus is water; Electrodeposited chromium plating solution consists of: chromium sulphate 160-170g/L, sodium sulfate 270-280g/L; Brometo de amonio 0.6-0.8mol/L; Boric acid 1.5-1.7mol/L; Inferior sodium phosphate 0.6-0.8mol/L; Oxalic acid 1.2-1.4mol/L; Sodium lauryl sulphate 0.03-0.05mol/L, ferrous sulfate 0.05-0.07mol/L, surplus is water.
The applicable electroplating technology of aforesaid combination solution is: alkali cleaning → pickling → activation → soak zinc → plating zinc-nickel → electrodeposited chromium.
Wherein, electroplate the technique of zinc-nickel and can be: in above-mentioned electro-galvanizing nickel plating bath, take stainless steel or graphite as anode, processing parameter is: electroplating temperature: 30-50 ℃, electroplating time 30-50min, current density: 1.0-3.0A/dm
2.
Wherein, electrodeposited chromium technique can be: in above-mentioned electric chrome solution, electroplate, processing parameter is: pH value 2.0-3.5; Technological temperature 40-60 ℃, cathode current density 20-24A/dm
2, electroplating time 20-30 minute.
The present invention has advantages of:
By the adjustment to electro-galvanizing nickel plating bath and electrodeposited chromium bath composition, do not adopt poisonous, pollute high component, make plating technic Environmental Safety, and preparation the corrosion-resistant height of coating, appearance looks elegant, matrix and binding force of cladding material are high.
Embodiment
Embodiment mono-
A Mg alloy surface electrodeposited chromium combination solution for pre-electroplated zinc nickel alloy, described combination solution comprises electro-galvanizing nickel plating bath and electrodeposited chromium plating solution, wherein electro-galvanizing nickel plating bath consists of: ZnSO
47H
2o32g/L, NiSO
46H
2o19g/L, sodium sulfate 43g/L, K
4p
2o
73H
2o168g/L, KF18g/L, C
6h
17o
7n
336g/L, phytic acid 0.4g/L, H
2cSNH
2: 6g/L, surplus is water; Electrodeposited chromium plating solution consists of: chromium sulphate 160g/L, sodium sulfate 280g/L; Brometo de amonio 0.6mol/L; Boric acid 1.7mol/L; Inferior sodium phosphate 0.6mol/L; Oxalic acid 1.4mol/L; Sodium lauryl sulphate 0.03mol/L, ferrous sulfate 0.07mol/L, surplus is water.
Embodiment bis-
A Mg alloy surface electrodeposited chromium combination solution for pre-electroplated zinc nickel alloy, described combination solution comprises electro-galvanizing nickel plating bath and electrodeposited chromium plating solution, wherein electro-galvanizing nickel plating bath consists of: ZnSO
47H
2o36g/L, NiSO
46H
2o15g/L, sodium sulfate 47g/L, K
4p
2o
73H
2o164g/L, KF20g/L, C
6h
17o
7n
332g/L, phytic acid 0.6g/L, H
2cSNH
2: 4g/L, surplus is water; Electrodeposited chromium plating solution consists of: chromium sulphate 170g/L, sodium sulfate 270g/L; Brometo de amonio 0.8mol/L; Boric acid 1.5mol/L; Inferior sodium phosphate 0.8mol/L; Oxalic acid 1.2mol/L; Sodium lauryl sulphate 0.05mol/L, ferrous sulfate 0.05mol/L, surplus is water.
Embodiment tri-
A Mg alloy surface electrodeposited chromium combination solution for pre-electroplated zinc nickel alloy, described combination solution comprises electro-galvanizing nickel plating bath and electrodeposited chromium plating solution, wherein electro-galvanizing nickel plating bath consists of: ZnSO
47H
2o34g/L, NiSO
46H
2o17g/L, sodium sulfate 45g/L, K
4p
2o
73H
2o166g/L, KF19g/L, C
6h
17o
7n
334g/L, phytic acid 0.5g/L, H
2cSNH
2: 5g/L, surplus is water; Electrodeposited chromium plating solution consists of: chromium sulphate 165g/L, sodium sulfate 275g/L; Brometo de amonio 0.7mol/L; Boric acid 1.6mol/L; Inferior sodium phosphate 0.7mol/L; Oxalic acid 1.3mol/L; Sodium lauryl sulphate 0.04mol/L, ferrous sulfate 0.06mol/L, surplus is water.
Claims (1)
1. a Mg alloy surface electrodeposited chromium combination solution for pre-electroplated zinc nickel alloy, is characterized in that, described combination solution comprises electro-galvanizing nickel plating bath and electrodeposited chromium plating solution, and wherein electro-galvanizing nickel plating bath consists of: ZnSO
47H
2o32-36g/L, NiSO
46H
2o15-19g/L, sodium sulfate 43-47g/L, K
4p
2o
73H
2o164-168g/L, KF18-20g/L, C
6h
17o
7n
332-36g/L, phytic acid 0.4-0.6g/L, H
2cSNH
2: 4-6g/L, surplus is water; Electrodeposited chromium plating solution consists of: chromium sulphate 160-170g/L, sodium sulfate 270-280g/L; Brometo de amonio 0.6-0.8mol/L; Boric acid 1.5-1.7mol/L; Inferior sodium phosphate 0.6-0.8mol/L; Oxalic acid 1.2-1.4mol/L; Sodium lauryl sulphate 0.03-0.05mol/L, ferrous sulfate 0.05-0.07mol/L, surplus is water.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310220251.6A CN103898586A (en) | 2013-06-04 | 2013-06-04 | Magnesium alloy surface electrochromism combination solution for pre-electroplated zinc-nickel alloy |
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|---|---|---|---|
| CN201310220251.6A CN103898586A (en) | 2013-06-04 | 2013-06-04 | Magnesium alloy surface electrochromism combination solution for pre-electroplated zinc-nickel alloy |
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| Publication Number | Publication Date |
|---|---|
| CN103898586A true CN103898586A (en) | 2014-07-02 |
Family
ID=50990149
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|---|---|---|---|
| CN201310220251.6A Pending CN103898586A (en) | 2013-06-04 | 2013-06-04 | Magnesium alloy surface electrochromism combination solution for pre-electroplated zinc-nickel alloy |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61133394A (en) * | 1984-12-01 | 1986-06-20 | Nisshin Steel Co Ltd | Method for plating zn-ni alloy with high electric current |
| CN101195925A (en) * | 2006-12-08 | 2008-06-11 | 辽宁师范大学 | Magnesium and method for electroplating copper on magnesium alloy surface |
| CN101280445A (en) * | 2008-05-16 | 2008-10-08 | 广州杰赛科技股份有限公司 | Electroplating process for surface of magnesium alloy motorcycle hub |
| CN101665959A (en) * | 2008-09-03 | 2010-03-10 | 中国科学院宁波材料技术与工程研究所 | Trivalent chromium electroplating solution of sulfate system and electroplating method thereof |
| CN102154665A (en) * | 2011-03-21 | 2011-08-17 | 济南德锡科技有限公司 | Trivalent chromium plating solution composite, preparation method thereof and chromium plating process |
-
2013
- 2013-06-04 CN CN201310220251.6A patent/CN103898586A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61133394A (en) * | 1984-12-01 | 1986-06-20 | Nisshin Steel Co Ltd | Method for plating zn-ni alloy with high electric current |
| CN101195925A (en) * | 2006-12-08 | 2008-06-11 | 辽宁师范大学 | Magnesium and method for electroplating copper on magnesium alloy surface |
| CN101280445A (en) * | 2008-05-16 | 2008-10-08 | 广州杰赛科技股份有限公司 | Electroplating process for surface of magnesium alloy motorcycle hub |
| CN101665959A (en) * | 2008-09-03 | 2010-03-10 | 中国科学院宁波材料技术与工程研究所 | Trivalent chromium electroplating solution of sulfate system and electroplating method thereof |
| CN102154665A (en) * | 2011-03-21 | 2011-08-17 | 济南德锡科技有限公司 | Trivalent chromium plating solution composite, preparation method thereof and chromium plating process |
Non-Patent Citations (1)
| Title |
|---|
| 张允诚 等: "《电镀手册》", 31 January 2007 * |
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Application publication date: 20140702 |
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