CN100560794C - Magnesium alloy surface treatment process - Google Patents
Magnesium alloy surface treatment process Download PDFInfo
- Publication number
- CN100560794C CN100560794C CNB2006100371933A CN200610037193A CN100560794C CN 100560794 C CN100560794 C CN 100560794C CN B2006100371933 A CNB2006100371933 A CN B2006100371933A CN 200610037193 A CN200610037193 A CN 200610037193A CN 100560794 C CN100560794 C CN 100560794C
- Authority
- CN
- China
- Prior art keywords
- chrome
- magnesium alloy
- grams per
- activated solution
- free activated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Chemical Treatment Of Metals (AREA)
- Chemically Coating (AREA)
Abstract
The present invention relates to a kind of Chrome-free activated solution and this solution that is used for the pre-treatment of magnesium alloy surface chemical plating nickel and be used for the method that Mg alloy surface is handled.Wherein, the prescription of this Chrome-free activated solution is phosphate dihydrogen manganese 1～20 grams per liter, SODIUMNITRATE 1～5 grams per liter, Potassium monofluoride 1～20 grams per liter and organic acid 1～20 grams per liter, and between its pH value 2.0～5.0.In addition, this method be earlier with magnesium alloy through sandblasting and with ultrasonic involve washing after, be impregnated in again in temperature is 20～60 ℃ above-mentioned Chrome-free activated solution, take out after treated 0.5～20 minute and can carry out chemical nickel plating after involving washing only with ultrasonic.It is seriously polluted that the present invention can overcome present chemical nickel plating process on magnesium alloy, the more high shortcoming of cost.
Description
Technical field
The present invention relates to a kind of process of surface treatment, relate generally to a kind of chemically coating nickel by magnesium-alloy pre-treatment Chrome-free activated solution and magnesium alloy surface treatment process.
Background technology
Magnesium alloy is because its proportion is little, intensity is high, good heat conductivity, have good damping shock absorption and electro-magnetic screen function simultaneously, in 3C Product, use more and more widely, but magnesium alloy chemical is active high, and the surface is oxidation very easily, and corrosion resistance nature is very poor, carry out relatively difficulty of electroless plating on its surface, therefore must before carrying out chemical nickel plating, Mg alloy surface be carried out activation treatment.And the corrosion resistance of magnesium alloy behind the chemical nickel plating can be good, and the EMI performance is good.
And the technology that conventional chemical nickel plating is adopted is to adopt the sexavalent chrome activation earlier, perhaps through the cupric cyanide bottoming, soak zinc etc. again, wherein, described technical process is respectively: the magnesium alloy work-piece surface degreasing is also removed the mixed solution of oxide film → wash → soak chromium trioxide and nitric acid → wash → soak hydrofluoric acid → washing → chemical nickel plating → washing → oven dry; And magnesium alloy work-piece surface degreasing and remove oxide film → wash → soak zinc → washing → chemical nickel plating → washing → oven dry.Its technology mode is tediously long in sum, and process is difficult to control, operational difficulty, and sexavalent chrome and prussiate all have great harm to environment and human body.
Therefore, pressing for provides cost low, and the chemically coating nickel by magnesium-alloy pre-treating technology of relative environmental protection.
Summary of the invention
The object of the present invention is to provide a kind of Chrome-free activated solution and magnesium alloy surface treatment process that is used for the pre-treatment of magnesium alloy surface chemical plating nickel, numerous and diverse to overcome present chemical nickel plating process on magnesium alloy process, cause problems such as environmental pollution.
For reaching above-mentioned purpose, the invention provides a kind of Chrome-free activated solution that is used for the chemically coating nickel by magnesium-alloy pre-treatment, be solvent with water, contain in this every liter solution:
Phosphate dihydrogen manganese 1～20 gram;
SODIUMNITRATE 1～5 gram;
Potassium monofluoride 1～20 gram;
Organic acid 1～20 gram.
With above-mentioned magnesium alloy surface treatment process, comprise following processing step:
Earlier do sandblasting at Mg alloy surface, then the ultrasonic deionized water that involves of used for magnesium alloy after sandblasting is cleaned, it is 2.0～5.0 that magnesium alloy after will cleaning again impregnated in the pH value, temperature activates 0.5～20 minute in 20～60 ℃ above-mentioned Chrome-free activated solution, to clean with the ultrasonic deionized water that involves again through the magnesium alloy after the above-mentioned activation treatment, can will carry out chemical nickel plating at last through the magnesium alloy after the above-mentioned processing.
Compared to previous technical scheme, the invention provides a kind of Chrome-free activated solution and magnesium alloy surface treatment process of chemically coating nickel by magnesium-alloy pre-treatment, wherein, the composition of this Chrome-free activated solution is simple, and preparation is convenient, and cost is low, various constituent concentrations can change in a big way, easy to operate, particularly this prescription has been avoided the employing sexavalent chrome, greatly reduces the harm to human body and environment.
Embodiment
Detailed description is made to the present invention's composition and processing mode by following elder generation.
It is formed with water is solvent, contains in this every liter solution:
Phosphate dihydrogen manganese 1～20 gram;
SODIUMNITRATE 1～5 gram;
Potassium monofluoride 1～20 gram;
Organic acid 1～20 gram.
With above-mentioned magnesium alloy surface treatment process, comprise following processing step:
Step a. does sandblasting at Mg alloy surface earlier;
Step b. cleans the magnesium alloy after sandblasting then;
It is 2.0～5.0 that magnesium alloy after step c will be cleaned again impregnated in the pH value, and temperature activates 0.5～20 minute in 20～60 ℃ above-mentioned Chrome-free activated solution;
Steps d. the magnesium alloy after the activated processing is cleaned;
Step e. can will carry out chemical nickel plating through the magnesium alloy after the above-mentioned processing at last.
Below in conjunction with embodiment the present invention is made detailed description again.
AZ31B magnesium alloy sample surfaces is done the nickel plating pre-treatment.
Embodiment 1:
Take by weighing reagent by following prescription: phosphate dihydrogen manganese 2 grams, SODIUMNITRATE 2 grams, Potassium monofluoride 10 grams, earlier mentioned reagent is dissolved with less water respectively, mixed diluting to 1 liter then, and the pH value is transferred to 3.5 with the acetic acid of 3 grams per liters, make the present invention's Chrome-free activated solution.
Subsequently AZ31B magnesium alloy sample surfaces is carried out sandblasting, its role is to remove the oil stain of Mg alloy surface, polishing AZ31B magnesium alloy sample surfaces, be placed in the above-mentioned Chrome-free activated solution with the washing of ultrasonic wave deionization, after temperature is to leave standstill 1 minute under 30 ℃, take out this AZ31B magnesium alloy sample, and with ultrasonic involve deionized water and wash after, can carry out the Nickel Plating Treatment of AZ31B magnesium alloy sample surfaces at last.
Embodiment 2:
Take by weighing reagent by following prescription: phosphate dihydrogen manganese 5 grams, SODIUMNITRATE 5 grams, Potassium monofluoride 15 grams, earlier mentioned reagent is dissolved with less water respectively, mixed diluting to 1 liter then, and the pH value is transferred to 3.5 with the acetic acid of 5 grams per liters, make the present invention's Chrome-free activated solution.
Subsequently AZ31B magnesium alloy sample surfaces is carried out sandblasting, its role is to remove the oil stain of Mg alloy surface, polishing AZ31B magnesium alloy sample surfaces, be placed in the above-mentioned Chrome-free activated solution with the washing of ultrasonic wave deionization, after temperature is to leave standstill 0.5 minute under 35 ℃, take out this AZ31B magnesium alloy sample, and with ultrasonic involve deionized water and wash after, can carry out the Nickel Plating Treatment of AZ31B magnesium alloy sample surfaces at last.
Claims (6)
1. a Chrome-free activated solution that is used for the chemically coating nickel by magnesium-alloy pre-treatment is a solvent with water, contains in this every liter solution:
Phosphate dihydrogen manganese 1～20 gram;
SODIUMNITRATE 1～5 gram;
Potassium monofluoride 1～20 gram;
Organic acid 1～20 gram.
2. the Chrome-free activated solution that is used for the chemically coating nickel by magnesium-alloy pre-treatment according to claim 1, it is characterized in that, the prescription of this Chrome-free activated solution is phosphate dihydrogen manganese 2 grams per liters, SODIUMNITRATE 2 grams per liters, Potassium monofluoride 10 grams per liters, organic acid 3 grams per liters, and the pH value of this Chrome-free activated solution is 3.5.
3. the Chrome-free activated solution that is used for the chemically coating nickel by magnesium-alloy pre-treatment according to claim 1, it is characterized in that, the prescription of this Chrome-free activated solution is phosphate dihydrogen manganese 5 grams per liters, SODIUMNITRATE 5 grams per liters, Potassium monofluoride 15 grams per liters, organic acid 5 grams per liters, and the pH value of this Chrome-free activated solution is 3.5.
4. the Chrome-free activated solution that is used for the chemically coating nickel by magnesium-alloy pre-treatment according to claim 1 is characterized in that above-mentioned organic acid is selected from acetic acid, oxalic acid or propionic acid.
5. magnesium alloy surface treatment process, it comprises following processing step:
Step a. does sandblasting at Mg alloy surface earlier;
Step b. cleans the magnesium alloy after sandblasting then;
It is 2.0～5.0 that magnesium alloy after step c will be cleaned again impregnated in the pH value, temperature 20～60 ℃ as activating 0.5～20 minute in arbitrary described Chrome-free activated solution in the claim 1 to 4;
Steps d. the magnesium alloy after the activated processing is cleaned;
Step e. will carry out chemical nickel plating through the magnesium alloy after step a handles to steps d at last.
6. magnesium alloy surface treatment process according to claim 5 is characterized in that, above-mentioned steps b and d can be with ultrasonic this magnesium alloy of washed with de-ionized water that involves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100371933A CN100560794C (en) | 2006-08-25 | 2006-08-25 | Magnesium alloy surface treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100371933A CN100560794C (en) | 2006-08-25 | 2006-08-25 | Magnesium alloy surface treatment process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101130862A CN101130862A (en) | 2008-02-27 |
| CN100560794C true CN100560794C (en) | 2009-11-18 |
Family
ID=39128266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100371933A Expired - Fee Related CN100560794C (en) | 2006-08-25 | 2006-08-25 | Magnesium alloy surface treatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100560794C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831644A (en) * | 2010-06-12 | 2010-09-15 | 哈尔滨工业大学 | Chemical nickel plating method for pretreating magnesium alloy by chrome-free acid-wash activation one-step process |
| CN102962269B (en) * | 2012-12-20 | 2014-09-17 | 丹阳市精密合金厂有限公司 | Method for removing oil of inner surface of small-caliber cold-rolling pipe |
-
2006
- 2006-08-25 CN CNB2006100371933A patent/CN100560794C/en not_active Expired - Fee Related
Non-Patent Citations (6)
| Title |
|---|
| 镁合金化学镀镍预处理过程表面状况的研究. 胡文彬，向阳辉，刘新宽等.中国腐蚀与防护学报，第21卷第6期. 2001 |
| 镁合金化学镀镍预处理过程表面状况的研究. 胡文彬，向阳辉，刘新宽等.中国腐蚀与防护学报，第21卷第6期. 2001 * |
| 镁合金涂装保护体系实效特性及铬酸盐转换膜的影响. 高瑾，涂运骅，李久青.腐蚀科学与防护技术，第17卷第3期. 2005 |
| 镁合金涂装保护体系实效特性及铬酸盐转换膜的影响. 高瑾，涂运骅，李久青.腐蚀科学与防护技术，第17卷第3期. 2005 * |
| 镁合金表面防蚀技术研究进展. 肖卫华.淮海工学院学报（自然科学版），第14卷第3期. 2005 |
| 镁合金表面防蚀技术研究进展. 肖卫华.淮海工学院学报（自然科学版），第14卷第3期. 2005 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101130862A (en) | 2008-02-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9416454B2 (en) | Method for conversion treating surface of magnesium alloy workpiece | |
| CN100430520C (en) | Process for copper coating on surface of magnesium and magnesium alloy | |
| CN106676529B (en) | 1060 aluminum alloy alkaline chemical polishing method and alkaline chemical polishing solution adopted by same | |
| CN101130864B (en) | Surface treating method for magnesium alloy | |
| CN104975284A (en) | Surface treatment process for cold-rolled stainless steel strip | |
| CN109402702A (en) | Deashing agent and preparation method thereof after a kind of closing of aluminium alloy anode oxide technique | |
| CN105297011A (en) | Method for preparing super-hydrophobic composite film layer on surface of magnesium alloy | |
| CN105177545A (en) | Cold-rolled steel sheet surface treatment technique | |
| CN100516296C (en) | Magnesium alloy surface treatment technique | |
| CN100560794C (en) | Magnesium alloy surface treatment process | |
| CN104087927B (en) | Magnesium-alloy material surface modifying treatment | |
| CN100447301C (en) | Magnesium alloy phosphate surface modified treatment process | |
| CN101078114A (en) | Magnesium alloy surface chemistry transformation treatment technique | |
| US20070099022A1 (en) | Non-chromium post-treatment for aluminum coated steel | |
| CN101113518B (en) | Magnesium alloy surface rare earth treatment technique | |
| CN102191531B (en) | Stainless steel blackening agent | |
| CN102191494B (en) | Treatment solution for reducing oxidation films on surface of copper and copper alloys and treatment method thereof | |
| CN102220574B (en) | Chemical nickel-phosphorus plating method on surface of zirconium-aluminum alloy | |
| CN101671821B (en) | Chemical conversion solution and chemical conversion process for magnesium alloy surface treatment | |
| CN100529179C (en) | Magnesium alloy surface treating method | |
| CN101210322B (en) | Magnesium alloy surface chemical treatment solution and treatment method thereof | |
| CN109778191A (en) | A kind of withdrawal plating of easy turning steel part surface Zinc-Nickel coating layer | |
| CN101153390A (en) | Chemical nickel plating solution for magnesium alloy and nickeling technique thereof | |
| CN1239746C (en) | Technology of selective lead removed for running water pipe fitting made of copper alloy and lead removal liquid | |
| CN104931568A (en) | Indium tin oxide electrochemiluminescence reaction electrode regeneration cleaning method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091118 Termination date: 20110825 |