CN1962938A - Process for chemical nickel plating on surface of aluminum alloy containing silicon, copper, and magnesium - Google Patents
Process for chemical nickel plating on surface of aluminum alloy containing silicon, copper, and magnesium Download PDFInfo
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- CN1962938A CN1962938A CN 200510100994 CN200510100994A CN1962938A CN 1962938 A CN1962938 A CN 1962938A CN 200510100994 CN200510100994 CN 200510100994 CN 200510100994 A CN200510100994 A CN 200510100994A CN 1962938 A CN1962938 A CN 1962938A
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Abstract
The invention discloses a chemical nickel depositing method of aluminium alloy with silicon, copper and magnesium, which comprises the following steps: passivating surface; washing; depositing nickel; drying. The surface passivation liquid contains 20-40% nitrate, 0.05-0.2% sodium fluoride and residual deionized water; the chemical nickel depositing solution concludes 15-30g/l nickel salt, 10-25g/l complexing agent, 12-30g/l reducer, 0.003-0.01g/l stabilizer, 0.05-0.1g/l humectant and residual deionized water.
Description
Technical field
The present invention relates to the treatment technology of metallic surface, be specifically related to a kind of method of the chemical nickel plating on surface of aluminum alloy at siliceous, copper, magnesium.
Background technology
Electroless plating promptly is under cold situation, utilizes redox reaction to have on the plating piece of catalytic surface, obtains the method for metal alloy.Material has characteristics such as thickness of coating is even, bonding force is high, surface hardness is high, wear resisting property is good, corrosion resistance good surface smooth finish height after electroless plating, thereby is widely used in industries such as electromechanics, material, metallurgy, petrochemical industry, aerospace.
Chemical nickel plating is to utilize nickel salt solution under the effect of strong reductant inferior sodium phosphate, makes nickel ion be reduced into metallic nickel, and hypophosphite decomposes precipitation of phosphorus simultaneously, thereby has on the plating piece of catalytic surface, obtains the Ni-P alloy layer.
At the mode plating layer of metal nickel of aluminum alloy surface, can improve the multiple performances such as surface hardness, erosion resistance, wear resistance and weldability of aluminium alloy by electroless plating.Present Electroless Nickel Plating of Aluminum Alloy technology generally adopts secondary soaking zinc bottoming technology to guarantee the sticking power that nickel layer has, but the dip galvanizing technique complicated operation is difficult to safeguard, and seriously reduce the work-ing life of chemical nickel-plating liquid, and siliceous aluminium alloy is being carried out traditional when soaking the nickel plating of zinc forensic chemistry, coating color dimness, the relatively poor phenomenon of sticking power usually appear.
Summary of the invention
The object of the present invention is to provide a kind of method of the chemical nickel plating on surface of aluminum alloy at siliceous, copper, magnesium, solve problems such as the complex process that exists in the prior art, coating adhesion difference.
The method of the Electroless Nickel Plating of Aluminum Alloy of a kind of siliceous, copper provided by the invention, magnesium is characterized in that, comprises following operation steps:
1) surface passivation: with the Al-alloy parts surface of siliceous, copper, magnesium polish, polishing, degreasing, at room temperature immerse passivation in the acidic solution then, 1～3 minute time;
2) water flushing: the Al-alloy parts washing that will put after the passivation is dried, and is stand-by;
3) chemical nickel plating: the Al-alloy parts after will drying immerses in the plating bath and carries out chemical nickel plating, and each moiety and concentration thereof are in the plating bath:
Nickel salt 15～30g/L
Complexing agent 10～25g/L
Reductive agent 12～30g/L
Stablizer 0.003～0.01g/L
Wetting agent 0.05～0.1g/L
The deionized water surplus;
4) washing and mummification.
In the method for the Electroless Nickel Plating of Aluminum Alloy of above-mentioned siliceous, copper, magnesium, described passivation acidic solution is to contain the Sodium Fluoride of 20～40% nitric acid and 0.05～0.2% and the mixing solutions of balance of deionized water.
In the method for the Electroless Nickel Plating of Aluminum Alloy of above-mentioned siliceous, copper, magnesium, the processing condition of described chemical nickel plating are 40～55 ℃ of temperature, pH value 8.6～10.5, soak time 3～60 minutes.
In the method for the Electroless Nickel Plating of Aluminum Alloy of above-mentioned siliceous, copper, magnesium, nickel salt is single nickel salt or nickelous chloride in the described chemical nickel-plating solution; Complexing agent is Trisodium Citrate, citric acid or oxyacetic acid in the described chemical nickel-plating solution; Reductive agent is inferior sodium phosphate, sodium hypophosphite or sodium borohydride in the described chemical nickel-plating solution; Stablizer is sulphur urine or Potassium Iodate in the described chemical nickel-plating solution; Wetting agent is OP-10 in the described chemical nickel-plating solution.
The present invention has following advantage:
1. adopt treatment process of the present invention, need be through dipping of the chromic acid in the traditional electrical electroplating method and hydrofluoric acid activation treatment, reduced the pollution of environment and reduced healthy effect operator.
2. adopt treatment process of the present invention, handle, simplified the technology of traditional Electroless Nickel Plating of Aluminum Alloy, reduced cost without soaking zinc.
3. the chemical Ni-plating layer that adopts the present invention to make, the even film layer densification, anti-impact force is strong, and erosion resistance is good, has the good metal outward appearance.
Embodiment
Below in conjunction with specific embodiment in detail the present invention is described in detail.
Embodiment 1
The Al-alloy parts of siliceous, copper to be plated, magnesium is handled by following operation steps:
1. surface passivation: with the Al-alloy parts surface of siliceous, copper, magnesium polish, polishing, degreasing, at room temperature immerse then in the passivating solution of the Sodium Fluoride that contains 20% nitric acid and 0.05% and carry out Passivation Treatment, 3 minutes time;
2. water flushing: the Al-alloy parts that will put after the passivation is dried through washing, and is stand-by;
3. chemical nickel plating: the Al-alloy parts after will drying immerses in the chemical nickel-plating liquid of OP-10 of the sulphur urine of sodium hypophosphite, 0.01g/L of Trisodium Citrate, the 30g/L of the single nickel salt that contains 30g/L, 25g/L and 0.1g/L and carries out Nickel Plating Treatment; The processing condition of chemical nickel plating are 40～55 ℃ of temperature, pH value 8.6～10.5, soak time 3～60 minutes;
4. the taking-up Al-alloy parts is used deionized water rinsing, rinsing and air-dry.
The aluminium alloy nickel plating part that adopts above-mentioned technology to obtain, through its nickel layer is tested, its performance is shown in subordinate list 1.
Embodiment 2
The Al-alloy parts of siliceous, copper to be plated, magnesium is handled by following operation steps:
1. surface passivation: with the Al-alloy parts surface of siliceous, copper, magnesium polish, polishing, degreasing, at room temperature immerse then in the passivating solution of the Sodium Fluoride that contains 40% nitric acid and 0.2% and carry out Passivation Treatment, 1 minute time;
2. water flushing: the Al-alloy parts that will put after the passivation is dried through washing, and is stand-by;
3. chemical nickel plating: the Al-alloy parts after will drying immerses in the chemical nickel-plating liquid of OP-10 of the Potassium Iodate of inferior sodium phosphate, 0.003g/L of citric acid, the 12g/L of the nickelous chloride that contains 15g/L, 10g/L and 0.05g/L and carries out Nickel Plating Treatment; The processing condition of chemical nickel plating are 40～55 ℃ of temperature, pH value 8.6～10.5, soak time 3～60 minutes;
4. the taking-up Al-alloy parts is used deionized water rinsing, rinsing and air-dry.
Embodiment 3
The Al-alloy parts of siliceous, copper to be plated, magnesium is handled by following operation steps:
1. surface passivation: with the Al-alloy parts surface of siliceous, copper, magnesium polish, polishing, degreasing, at room temperature immerse then in the passivating solution of the Sodium Fluoride that contains 30% nitric acid and 0.1% and carry out Passivation Treatment, 2 minutes time;
2. water flushing: the Al-alloy parts that will put after the passivation is dried through washing, and is stand-by;
3. chemical nickel plating: the Al-alloy parts after will drying immerses in the chemical nickel-plating liquid of OP-10 of the Potassium Iodate of sodium borohydride, 0.005g/L of oxyacetic acid, the 20g/L of the single nickel salt that contains 25g/L, 20g/L and 0.08g/L and carries out Nickel Plating Treatment; The processing condition of chemical nickel plating are 40～55 ℃ of temperature, pH value 8.6～10.5, soak time 3～60 minutes;
4. the taking-up Al-alloy parts is used deionized water rinsing, rinsing and air-dry.
Subordinate list 1: the chemical Ni-plating layer performance that adopts the inventive method to obtain
| Test event | Testing method | Test result |
| Thickness of coating | With precision is the quality of sample before and after nickel plating that 0.001 analytical balance that restrains is measured equivalent regular shape, and calculates difference; The measure sample surface-area; Density according to nickel calculates nickel layer thickness. | About 1～5 micron of thickness of coating |
| Sticking power | Plating piece was toasted 10 minutes down at 150 degrees centigrade. | No bubble, no wrinkling |
| The scolding tin performance | (wherein stanniferous 42% to apply one deck tin bismuth metal powder in aluminum alloy surface, bismuth-containing 58%), being 150 degrees centigrade in temperature toasted 10 minutes down. | Adhering to of tin layer and aluminium alloy is good, and nothing comes off |
| Temperature shock | Plating piece was warming up to 70 ± 2 ℃ in 1 hour, humidity 85% kept 2 hours; In 1 hour, be cooled to-20 ± 2 ℃ again, kept 2 hours; The back was warming up to 70 ± 2 ℃ in 1 hour, humidity 95% kept 2 hours; Above-mentioned steps is carried out in operation successively repeatedly, and continues 48 hours. | Do not have peel off, flawless, no wrinkling, do not have and bubble |
Claims (8)
1. the method for the chemical nickel plating on surface of aluminum alloy of siliceous a, copper, magnesium is characterized in that, comprises following processing step:
1) surface passivation: with the Al-alloy parts surface of siliceous, copper, magnesium polish, polishing, degreasing, at room temperature immerse passivation in the acidic solution then, 1～3 minute time;
2) water flushing: the Al-alloy parts washing that will put after the passivation is dried, and is stand-by;
3) chemical nickel plating: Al-alloy parts after will drying immerses in the plating bath and carries out chemical nickel plating, in the plating bath each
Moiety and concentration thereof are:
Nickel salt 15～30g/L
Complexing agent 10～25g/L
Reductive agent 12～30g/L
Stablizer 0.003～0.01g/L
Wetting agent 0.05～0.1g/L
The deionized water surplus;
4) washing and mummification.
2. the method for the chemical nickel plating on surface of aluminum alloy of siliceous, copper according to claim 1, magnesium is characterized in that, described passivation acidic solution is to contain the Sodium Fluoride of 20～40% nitric acid and 0.05～0.2% and the mixing solutions of balance of deionized water.
3. the method for the chemical nickel plating on surface of aluminum alloy of siliceous, copper according to claim 1, magnesium is characterized in that the processing condition of described chemical nickel plating are 40～55 ℃ of temperature, pH value 8.6～10.5, soak time 3～60 minutes; Water washes and rinsed with deionized water respectively subsequently.
4. the method for the chemical nickel plating on surface of aluminum alloy of siliceous, copper according to claim 1, magnesium is characterized in that nickel salt is single nickel salt or nickelous chloride in the described chemical nickel-plating solution.
5. the method for the chemical nickel plating on surface of aluminum alloy of siliceous, copper according to claim 1, magnesium is characterized in that complexing agent is Trisodium Citrate, citric acid or oxyacetic acid in the described chemical nickel-plating solution.
6. the method for the chemical nickel plating on surface of aluminum alloy of siliceous, copper according to claim 1, magnesium is characterized in that reductive agent is inferior sodium phosphate, sodium hypophosphite or sodium borohydride in the described chemical nickel-plating solution.
7. the method for the chemical nickel plating on surface of aluminum alloy of siliceous, copper according to claim 1, magnesium is characterized in that, stablizer is sulphur urine or Potassium Iodate in the described chemical nickel-plating solution.
8. the method for the chemical nickel plating on surface of aluminum alloy of siliceous, copper according to claim 1, magnesium is characterized in that wetting agent is OP-10 in the described chemical nickel-plating solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101009945A CN100487161C (en) | 2005-11-08 | 2005-11-08 | Process for chemical nickel plating on surface of aluminum alloy containing silicon, copper, and magnesium |
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| CNB2005101009945A CN100487161C (en) | 2005-11-08 | 2005-11-08 | Process for chemical nickel plating on surface of aluminum alloy containing silicon, copper, and magnesium |
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| CN1962938A true CN1962938A (en) | 2007-05-16 |
| CN100487161C CN100487161C (en) | 2009-05-13 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525320A (en) * | 2014-09-30 | 2016-04-27 | 天津市金鑫利金属制品有限公司 | Nickel plating method used for heating plate |
| CN105586580A (en) * | 2014-11-18 | 2016-05-18 | 中国科学院兰州化学物理研究所 | Method for medium-low temperature quick chemical plating of Ni-P based on copper leaching and plating pretreatment |
| CN107749350A (en) * | 2017-10-18 | 2018-03-02 | 德清鼎兴电子有限公司 | A kind of super capacitor cupro-nickel combination electrode and its preparation technology |
| CN108654627A (en) * | 2018-05-30 | 2018-10-16 | 江苏中正陶瓷科技有限公司 | A kind of preparation method of pre-reduction type copper zinc-aluminium low temperature conversion catalyst |
| CN110344037A (en) * | 2018-04-07 | 2019-10-18 | 天津艾普斯工业铝型材股份有限公司 | A kind of aluminium shape surface processing method |
| CN110643988A (en) * | 2019-09-04 | 2020-01-03 | 郑智 | Chemical rust prevention method for aluminum alloy |
| CN111411350A (en) * | 2020-04-15 | 2020-07-14 | 深圳市欣茂鑫实业有限公司 | Nickel plating solution for aluminum alloy surface and preparation method thereof |
| CN113684472A (en) * | 2021-08-26 | 2021-11-23 | 广东韶钢松山股份有限公司 | Surface treatment method of iron crucible for alkali fusion |
-
2005
- 2005-11-08 CN CNB2005101009945A patent/CN100487161C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525320A (en) * | 2014-09-30 | 2016-04-27 | 天津市金鑫利金属制品有限公司 | Nickel plating method used for heating plate |
| CN105586580A (en) * | 2014-11-18 | 2016-05-18 | 中国科学院兰州化学物理研究所 | Method for medium-low temperature quick chemical plating of Ni-P based on copper leaching and plating pretreatment |
| CN107749350A (en) * | 2017-10-18 | 2018-03-02 | 德清鼎兴电子有限公司 | A kind of super capacitor cupro-nickel combination electrode and its preparation technology |
| CN110344037A (en) * | 2018-04-07 | 2019-10-18 | 天津艾普斯工业铝型材股份有限公司 | A kind of aluminium shape surface processing method |
| CN108654627A (en) * | 2018-05-30 | 2018-10-16 | 江苏中正陶瓷科技有限公司 | A kind of preparation method of pre-reduction type copper zinc-aluminium low temperature conversion catalyst |
| CN110643988A (en) * | 2019-09-04 | 2020-01-03 | 郑智 | Chemical rust prevention method for aluminum alloy |
| CN110643988B (en) * | 2019-09-04 | 2021-11-16 | 富地润滑科技股份有限公司 | Chemical rust prevention method for aluminum alloy |
| CN111411350A (en) * | 2020-04-15 | 2020-07-14 | 深圳市欣茂鑫实业有限公司 | Nickel plating solution for aluminum alloy surface and preparation method thereof |
| CN111411350B (en) * | 2020-04-15 | 2022-07-01 | 深圳市欣茂鑫实业有限公司 | Nickel plating solution for aluminum alloy surface and preparation method thereof |
| CN113684472A (en) * | 2021-08-26 | 2021-11-23 | 广东韶钢松山股份有限公司 | Surface treatment method of iron crucible for alkali fusion |
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Granted publication date: 20090513 Termination date: 20111108 |