CN103215574B - Magnesium-alloy chemical nickel plating solution and nickel plating process thereof - Google Patents
Magnesium-alloy chemical nickel plating solution and nickel plating process thereof Download PDFInfo
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Abstract
The invention discloses a magnesium-alloy chemical nickel plating solution and a nickel plating process thereof. The magnesium-alloy chemical nickel plating solution disclosed by the invention comprises alkaline chemical nickel plating liquid and weak acid chemical nickel plating liquid; and a special complexing system is used in a plating liquid system, so that the corrosion action on magnesium metal is reduced, and the stability of plating liquid and the bonding force between a base material and a nickel layer are improved. The invention further provides a magnesium-alloy two-step chemical nickel plating process, wherein the alkaline chemical nickel plating liquid is used for priming, and then, the weak acid chemical nickel plating liquid is used for carrying out thickening treatment. Furthermore, according to the nickel plating process, a pretreatment process of ultrasonic alkaline membrane removal is adopted before two-step chemical nickel plating, so that an oxidized membrane and a residual demolding agent on the surface of a magnesium-alloy workpiece are cleaned thoroughly, and then, the yield of nickel-plated products is further increased.
Description
Technical field
The invention belongs to metal protection field, particularly magnesium alloy chemical nickel plating solution and nickel plating technology thereof.
Background technology
Magnesium alloy is described as the green metal structured material of 21 century, have that density is low, specific tenacity and specific rigidity high, and damping and amortization, machinability, castability are superior, and automotive industry, aerospace industries, electronic industry obtain increasingly extensive application.
But magnesium alloy chemical character is active, and corrosion-resistant, needs to carry out anti-corrosive treatment to its surface, as plating, electroless plating, conversion coating, anodic oxidation, thermospray and the injection of gas phase depositing ions etc.Wherein, chemically coated nickel method, because significantly improving solidity to corrosion and the wear resistance of magnesium alloy, also can obtain the uniform coating of thickness on complicated plating piece surface, become the prefered method of magnesium alloy surface protective.
Because nickel to differ comparatively large with the Standard Electrode Potentials of magnesium, therefore on magnesium alloy, directly carry out chemical nickel plating, gained coating and basal body binding force poor.In order to address this problem, before chemical nickel plating, usually carry out leaching zinc, alkaline activation, the method such as acidic activated carry out surface preparation, playing certain improvement result.With leaching zinc pretreatment mode, carry out transition exactly between magnesium alloy and nickel dam with zinc-impregnating layer, to improve chemical Ni-plating layer bonding force, but in chemical nickel plating solution, the dissolving of zinc metal can shorten chemical nickel work-ing life.Current great majority adopt acidic activated pre-treatment, make Mg alloy surface generate the moderate MgF of one deck thickness
2protective membrane, then directly carries out chemical nickel plating, MgF
2protective membrane plays and controls chemical nickel sedimentation velocity, and can improve chemical nickel bonding force, but relatively need the chemical nickel plating time longer, production efficiency is low.
Magnesium alloy chemical nickel medicament is all special, and supporting with corresponding flow process together with use, large portion chemical nickel plating solution is slightly acidic or neutrality, pH value controls (Mao Zexu etc. in the scope of 5.5 ~ 8, AZ91D magnesium alloy direct chemical nickel-plating technique, material protection, the 5th phase in 2010; Bang duckweed etc., magnesium alloy direct chemical nickel-plating technique and coating performance, plating and covering with paint, the 2nd phase in 2011), advantage is that sedimentation velocity is fast, is conducive to chemical nickel is plated.Although add a large amount of hydrofluoric acid or fluorochemical protection magnesium alloy not by etch in chemical nickel plating solution, under high temperature neutrallty condition, still hold corrosion-vulnerable.Especially the magnalium AZ-91D die casting that uses of actual production, the surface composition skewness due to segregation phase, there will be local corrosion phenomenon in chemical nickel plating solution, cannot complete upper nickel, causes that to produce yield unstable.And when continuing electroplating other metals coating in this electroless nickel layer, with the increase of thickness, worse and worse, its major cause is that sedimentation velocity is fast to the bonding force between coating and base material, nickel dam stress is larger to be caused, and makes this technique limitation in actual production larger.
Summary of the invention
The object of the invention is to overcome existing deficiency, magnesium alloy chemical nickel plating solution and nickel plating technology thereof are provided.
The technical solution used in the present invention is:
A kind of magnesium alloy chemical nickel plating solution, comprises alkaline electroless plating nickel solution and slightly acidic chemical nickel-plating solution:
By mass percentage, alkaline chemical nickel-plating solution composition is as follows:
Surplus is deionized water, and is 10.0 ~ 11.5 with the pH of pH adjusting agent regulator solution;
By mass percentage, slightly acidic chemical nickel-plating solution is composed as follows:
Surplus is deionized water, and is 5.5 ~ 7.0 by the pH value of pH adjusting agent regulator solution.
Preferably, by mass percentage, alkaline chemical nickel-plating solution composition is as follows:
Surplus is deionized water and appropriate pH adjusting agent;
Preferably, by mass percentage, slightly acidic chemical nickel-plating solution is composed as follows:
Surplus is deionized water and appropriate pH adjusting agent.
Described pH adjusting agent is sodium hydroxide, potassium hydroxide or ammoniacal liquor.
A kind of magnesium alloy nickel plating technology, comprises the following steps:
1) pre-treatment: oil removing, pickling, activation treatment are carried out to magnesium alloy sample;
2) chemical nickel plating: use magnesium alloy chemical nickel plating solution to carry out the bottoming of alkaline electroless plating nickel solution and the nickel plating of slightly acidic chemical nickel-plating solution successively to magnesium alloy sample;
3) aftertreatment: after chemical nickel plating, carries out baking dehydrogenation, activation treatment;
4) electroplate: carry out follow-up routine plating;
Magnesium alloy chemical nickel plating solution used is described above.
Preferably, the treatment temp of alkaline electroless plating nickel solution bottoming is 45 ~ 52 DEG C, and the treatment temp of slightly acidic chemical nickel-plating solution nickel plating is 68 ~ 78 DEG C.
Preferably, the treatment time of alkaline electroless plating nickel solution bottoming is 30 ~ 50min, and the treatment time of slightly acidic chemical nickel-plating solution nickel plating is 15 ~ 55min.
Preferably, the pH value of alkaline electroless plating nickel solution is 10.5 ~ 11.5, and the pH value of slightly acidic chemical nickel-plating solution is 5.5 ~ 7.0.
Preferably, step 1) in, after pickling, after the membrane removal of ultrasonic wave alkalescence, carry out activation treatment; Alkalescence consists of except film: caustic alkali 10 ~ 30g/L, sodium carbonate or salt of wormwood 5 ~ 10g/L, potassium pyrophosphate 10 ~ 25g/L, water-soluble citrate 10 ~ 20g/L, organic polyphosphonic salt 10 ~ 30g/L, surplus is deionized water.
Ultrasonic wave alkalescence membrane removal treatment condition are: temperature 55 ~ 65 DEG C, time 0.5 ~ 3min, ultrasonic frequency 20 ~ 40KHz.
The invention has the beneficial effects as follows:
Magnesium alloy chemical nickel plating solution provided by the invention, comprise pH be 10.0 ~ 11.5 alkali electroless nickel plating bath and pH be 5.5 ~ 7.0 slightly acidic chemical nickel plating solution, special complex system is employed in bath system, reduce the effect of magnesium corrosion of metal, improve the stability of plating solution and the bonding force of base material and nickel dam, make to obtain excellent, fine and close electroless nickel layer during nickel plating.Present invention also offers the technique of magnesium alloy two-step chemical plating nickel, first use the bottoming of alkali electroless nickel plating bath, re-use slightly acidic chemical nickel plating solution and carry out thickening process, make it reach desired thickness.
Further, the present invention is before two-step chemical plating nickel, adopt the pre-treating technology of ultrasonic wave alkalescence membrane removal, use a kind of alkalescence of the hazardous material such as sexavalent chrome, fluorochemical that do not contain except film, under ultrasonic assistant effect, magnesium alloy work-piece surface oxide film and residual releasing agent are thoroughly processed totally, thus further increases the good article rate of nickel plating product.
Embodiment
Adopt nickel acetate to provide nickel ion as main salt in alkaline chemical nickel-plating solution system of the present invention, corrodibility is less compared with use single nickel salt, improves the good article rate of suitability for industrialized production, reduces material because corroding the risk of scrapping.Meanwhile, have employed multiple special complexing agent synergy, as: Citrate trianion, plays complexing action to metal, controls sedimentation velocity, and make solution-stabilized; Gluconate, plays auxiliary complexing action, the foreign metal that complexing magnesium alloy is dissolved out, and makes solution-stabilized further; Malate, plays stable performance effect, makes solution-stabilized; And introduce organic polyphosphonic salt especially, the dissolving of substrate surface metal oxide film can be promoted, activated substrate, improve the bonding force of chemical Ni-plating layer and base material, and there is the effect of auxiliary complexing metal, substantially increase the stability of plating solution.In addition, adopt aminocarboxylic acid as bath stability agent, promote nickel deposition effect, reduce nickel dam stress simultaneously.This system not only solves plating solution stability under high pH conditions, and the corrosive nature of magnesium alloy can be suppressed, ensure the enough even compacts of electroless nickel layer, ensure that magnesium alloy material carries out when thickening processes from corrosion in second slightly acidic chemical nickel plating solution.
Below in conjunction with embodiment, set forth the present invention further, but be not limited thereto.
Following examples adopt AZ-91D magnesium alloy as sample, and its chemical constitution is as shown in table 1:
The chemical constitution of table 1AZ-91D magnesium alloy
Adopt ultrasonic oil removal method to carry out oil removing in embodiment, degreaser formula is: sodium hydroxide 5 ~ 10g/L, sodium phosphate 5 ~ 10g/L, OP series emulsifying agent 1 ~ 5g/L, and surplus is water;
Embodiment 1
By the composition of table 2 neutral and alkali chemical nickel-plating solution, take each component, each component is dissolved in deionized water, and adjust pH to 10.5 with sodium hydroxide, then complement to 100% with deionized water;
By the composition of slightly acidic chemical nickel-plating solution in table 2, each component is dissolved in deionized water, and adjusts pH to 6.0 with ammoniacal liquor, then complement to 100% with deionized water.
Get magnesium alloy sample, carry out Nickel Plating Treatment, comprise the following steps:
1) ultrasonic oil removal: treatment temp is 50 ~ 60 DEG C, the time is 3 ~ 6min;
2) pickling: phosphoric acid 5 ~ 10g/L, citric acid 10 ~ 15g/L, urotropine 0.1 ~ 0.5g/L, surplus is water; Temperature is 20 ~ 30 DEG C, and the time is 1 ~ 2min;
3) activate: potassium pyrophosphate 10 ~ 15g/L, Sodium Fluoride 3 ~ 5g/L, SODIUMNITRATE 3 ~ 5g/L, glucose sodium saccharate 20 ~ 30g/L, organic phosphonate 50 ~ 80g/L, surplus is water; Temperature is 50 ~ 60 DEG C, and the time is 0.5 ~ 1min;
4) alkaline electroless plating nickel solution bottoming: immersed by sample in plating solution, keeps temperature to be 45 DEG C, plating 30min;
5) slightly acidic chemical nickel-plating solution nickel plating: immersed by sample in plating solution, keeps temperature to be 68 DEG C, plating 55min;
6) aftertreatment: baking dehydrogenation is carried out to the sample after chemical nickel plating, at 200 DEG C of temperature, process 80min; After cooling, then carry out acid activation with 2% sulfuric acid;
7) electroplate: last, carry out conventional electro-coppering, nickel, chromium process successively, make its thickness of coating be respectively 15 ~ 20 μm, nickel dam 10 ~ 15 μm, trivalent chromium layer 0.2 ~ 0.5 μm.
Certainly, magnesium alloy workpiece when above steps process, need between each step through twice tap water cleaning and together with pure water clean, guarantee to clean up, prevent the crossed contamination of each step liquid.
Bonding force detection method: toasted 1 hour at 200 DEG C by the AZ-91D magnesium alloy sample after the process of plating trivalent chromium, immerse room temperature water immediately and cool, observation coating surface, nothing is bubbled or decortication is that detection is qualified.
Implementation result: alkaline bottoming chemical nickel sedimentation velocity reaches 3.5 μm/h, and slightly acidic chemical nickel sedimentation velocity reaches 8 μm/h, and electroless nickel layer total thickness is about 8.5 μm; Follow-up routine plating bonding force detects, and qualification rate is 85%.
Embodiment 2
The preparation of alkaline electroless plating nickel solution, slightly acidic chemical nickel-plating solution is with embodiment 1.
Alkalescence is except the composition of film 1# is in table 3.
Get magnesium alloy sample, carry out Nickel Plating Treatment, comprise the following steps:
1) ultrasonic oil removal: treatment temp is 50 ~ 60 DEG C, the time is 3 ~ 6min;
2) pickling: phosphoric acid 5 ~ 10g/L, citric acid 10 ~ 15g/L, urotropine 0.1 ~ 0.5g/L, surplus is water; Temperature is 20 ~ 30 DEG C, and the time is 1 ~ 2min;
3) ultrasonic wave alkalescence membrane removal: treatment temp is 55 ~ 65 DEG C, and the time is 0.5 ~ 3min, and ultrasonic frequency is 20 ~ 40KHz;
4) activate: potassium pyrophosphate 10 ~ 15g/L, Sodium Fluoride 3 ~ 5g/L, SODIUMNITRATE 3 ~ 5g/L, glucose sodium saccharate 20 ~ 30g/L, organic phosphonate 50 ~ 80g/L, surplus is water; Temperature is 50 ~ 60 DEG C, and the time is 0.5 ~ 1min;
5) alkaline electroless plating nickel solution bottoming: immersed by sample in plating solution, keeps temperature to be 45 DEG C, plating 30min;
6) slightly acidic chemical nickel-plating solution nickel plating: immersed by sample in plating solution, keeps temperature to be 68 DEG C, plating 55min;
7) aftertreatment: baking dehydrogenation is carried out to the sample after chemical nickel plating, at 200 DEG C of temperature, process 80min; After cooling, then carry out acid activation with 2% sulfuric acid;
8) electroplate: last, carry out conventional electro-coppering, nickel, chromium process successively, make its thickness of coating be respectively 15 ~ 20 μm, nickel dam 10 ~ 15 μm, trivalent chromium layer 0.2 ~ 0.5 μm.
Bonding force detection method: toasted 1 hour at 200 DEG C by the AZ-91D magnesium alloy sample after the process of plating trivalent chromium, immerse room temperature water immediately and cool, observation coating surface, nothing is bubbled or decortication is that detection is qualified.
Implementation result: alkaline bottoming chemical nickel sedimentation velocity reaches 3.5 μm/h, and slightly acidic chemical nickel sedimentation velocity reaches 8 μm/h, and electroless nickel layer total thickness is about 8.5 μm; Follow-up routine plating bonding force detects, and qualification rate is 100%.
Embodiment 3 ~ 8
The processing parameter of embodiment 3 ~ 8 is similar to embodiment 2.Use in each embodiment chemical nickel-plating solution composition as shown in table 2, alkalescence except film composition as shown in table 3, processing parameter and nickel plating effect as shown in table 4.
The composition of chemical nickel-plating solution in each embodiment of table 2
Note:
1, alkaline chemical nickel-plating liquid: in embodiment 1 ~ 4, hypophosphite used is sodium hypophosphite is potassium hypophosphite in embodiment 5 ~ 8; In embodiment 1 ~ 5, water-soluble citrate used is Trisodium Citrate, is Tripotassium Citrate in embodiment 6 ~ 8; In embodiment 1 ~ 4, Water-Soluble Glucose hydrochlorate used is Sunmorl N 60S, is Potassium Gluconate in embodiment 5 ~ 8; In embodiment 1 ~ 5, malate used is sodium malate, is potassium malate in embodiment 6 ~ 8; In embodiment 1,2, organic polyphosphonic salt used is Amino Trimethylene Phosphonic Acid potassium, be ethylenediamine tetramethylene phosphonic acid potassium in embodiment 3,4, being Amino Trimethylene Phosphonic Acid potassium and ethylenediamine tetramethylene phosphonic acid potassium (mass ratio 1:2) in embodiment 5, is hydroxy ethylene diphosphonic acid potassium in embodiment 6 ~ 8.
2, slightly acidic chemical nickel-plating liquid: in embodiment 1 ~ 4, hypophosphite used is sodium hypophosphite is potassium hypophosphite in embodiment 5 ~ 8.
Table 3 embodiment 2 ~ 8 neutral and alkali is except the composition of film
Note: except the caustic alkali in film 1# ~ 5# is sodium hydroxide is potassium hydroxide in 6#, 7#;
Except in film 1# ~ 5#, water-soluble citrate is Trisodium Citrate, is Tripotassium Citrate in 6#, 7#;
Except organic polyphosphonic salt in film 1# is Amino Trimethylene Phosphonic Acid potassium, be ethylenediamine tetramethylene phosphonic acid potassium in 2#, 3#, being Amino Trimethylene Phosphonic Acid potassium and ethylenediamine tetramethylene phosphonic acid potassium (mass ratio 1:2) in 4#, is ethylenediamine tetramethylene phosphonic acid potassium and hydroxy ethylene diphosphonic acid potassium (mass ratio 1:1) in 5# ~ 7#.
Nickel Plating Treatment processing parameter and nickel plating effect in each embodiment of table 4
When the present invention is directed to current suitability for industrialized production, chemically coating nickel by magnesium-alloy can corrode the problem of material, have developed magnesium alloy chemical nickel plating solution, comprise pH be 10.0 ~ 11.5 alkali electroless nickel plating bath and pH be 5.5 ~ 7.0 slightly acidic chemical nickel plating solution.
Present invention also offers a kind for the treatment of process of two-step chemical plating nickel, first be that the alkali electroless nickel plating bath of 10.0 ~ 11.5 is as prime coat with pH, mainly due to pH lower than 10.0 time, the easy plated immersion erosion of magnesium alloy material that pressure injection is poor, higher pH value can avoid plating solution etch material, to make chemical nickel evenly upper plating, complete covering, nickel deposition speed is slower at this ph simultaneously, liberation of hydrogen is less, contributes to the careful porosity of nickel dam low.And then use pH be 5.5 ~ 7.0 slightly acidic chemical nickel plating solution carry out thickening process, mainly utilize its fast deposition nickel dam, increase the density of nickel layer, avoid follow-up plating to cause corrosion.Alkali electroless nickel plating bath adopts multiple special complexing agent synergy, introduce organic polyphosphonic salt especially, substantially increase the stability of plating solution and the bonding force of base material and nickel dam, this system not only solves plating solution stability under high pH conditions, and there is the corrosive nature suppressing magnesium alloy, ensure the enough even compacts of electroless nickel layer, when guaranteeing to carry out thickening process in second slightly acidic chemical nickel plating solution, avoid material to be corroded.The present invention simultaneously uses nickel acetate to provide nickel metal as main salt, and corrodibility is less compared with use single nickel salt, improves the good article rate of suitability for industrialized production, reduces material because corroding the risk of scrapping.
Further, the present invention is before two-step chemical plating nickel, adopt the pre-treating technology of ultrasonic wave alkalescence membrane removal, use a kind of alkalescence of the hazardous material such as sexavalent chrome, fluorochemical that do not contain except film, under ultrasonic assistant effect, magnesium alloy work-piece surface oxide film and residual releasing agent are thoroughly processed totally, thus further increases the good article rate of nickel plating product.
The nickel plating magnesium alloy bonding force prepared due to this technique is excellent, after plating chemical nickel, through dehydrogenation, other functional, ornamental coating can be electroplated arbitrarily on nickel dam, the electroplating assembly line being particularly useful for complex-shaped workpieces uses, and effect is better than traditional prussiate electroplating technology.
Claims (9)
1. a magnesium alloy chemical nickel plating solution, comprises alkaline electroless plating nickel solution and slightly acidic chemical nickel-plating solution:
By mass percentage, alkaline chemical nickel-plating solution composition is as follows:
Nickel acetate 1 ~ 4%
Water-soluble hypophosphite 1 ~ 6%
Sodium carbonate or salt of wormwood 0.1 ~ 2%
Water-soluble citrate 1 ~ 6%
Water-Soluble Glucose hydrochlorate 1 ~ 6%
Hydrosoluble apple hydrochlorate 0.5 ~ 5%
Organic polyphosphonic salt 0.1 ~ 2%
Sodium Fluoride or Potassium monofluoride 0.5 ~ 5%
Aminocarboxylic acid 0.1 ~ 1%
Surplus is deionized water, and is 10.0 ~ 11.5 with the pH of pH adjusting agent regulator solution;
By mass percentage, slightly acidic chemical nickel-plating solution is composed as follows:
Nickel acetate 1 ~ 3%
Water-soluble hypophosphite 1 ~ 6%
Citric acid 0.2 ~ 1.5%
Lactic acid 0.5 ~ 5%
Gluconic acid 0.5 ~ 3%
Oxysuccinic acid 0.5 ~ 3%
Aminocarboxylic acid 0.1 ~ 1%
Sodium dodecylbenzene sulfonate 0.1 ~ 0.5%
Ammonium bifluoride 1 ~ 5%
Surplus is deionized water, and is 5.5 ~ 7.0 by the pH value of pH adjusting agent regulator solution.
2. magnesium alloy chemical nickel plating solution according to claim 1, is characterized in that:
By mass percentage, alkaline chemical nickel-plating solution composition is as follows:
Nickel acetate 1.5 ~ 2%
Water-soluble hypophosphite 1.5 ~ 4%
Sodium carbonate or salt of wormwood 0.4 ~ 1%
Water-soluble citrate 1.5 ~ 4%
Water-Soluble Glucose hydrochlorate 1.5 ~ 4%
Hydrosoluble apple hydrochlorate 1 ~ 3%
Organic polyphosphonic salt 0.5 ~ 1%
Sodium Fluoride or Potassium monofluoride 1 ~ 3%
Aminocarboxylic acid 0.1 ~ 0.5%
Surplus is deionized water and appropriate pH adjusting agent;
By mass percentage, slightly acidic chemical nickel-plating solution is composed as follows:
Nickel acetate 1.5 ~ 2%
Water-soluble hypophosphite 1.5 ~ 4%
Citric acid 0.2 ~ 1.5%
Lactic acid 0.8 ~ 3.5%
Gluconic acid 1.5 ~ 2%
Oxysuccinic acid 1.5 ~ 2%
Aminocarboxylic acid 0.1 ~ 0.5%
Sodium dodecylbenzene sulfonate 0.2 ~ 0.3%
Ammonium bifluoride 2 ~ 3%
Surplus is deionized water and appropriate pH adjusting agent.
3. magnesium alloy chemical nickel plating solution according to claim 1 and 2, is characterized in that: pH adjusting agent is sodium hydroxide, potassium hydroxide or ammoniacal liquor.
4. a magnesium alloy nickel plating technology, comprises the following steps:
1) pre-treatment: oil removing, pickling, activation treatment are carried out to magnesium alloy sample;
2) chemical nickel plating: use magnesium alloy chemical nickel plating solution to carry out the bottoming of alkaline electroless plating nickel solution and the nickel plating of slightly acidic chemical nickel-plating solution successively to magnesium alloy sample;
3) aftertreatment: after chemical nickel plating, carries out baking dehydrogenation, activation treatment;
4) electroplate: carry out follow-up routine plating;
Magnesium alloy chemical nickel plating solution used is as described in claims 1 to 3 any one.
5. a kind of magnesium alloy nickel plating technology according to claim 4, is characterized in that: the treatment temp of alkaline electroless plating nickel solution bottoming is 45 ~ 52 DEG C, and the treatment temp of slightly acidic chemical nickel-plating solution nickel plating is 68 ~ 78 DEG C.
6. a kind of magnesium alloy nickel plating technology according to claim 5, is characterized in that: the treatment time of alkaline electroless plating nickel solution bottoming is 30 ~ 50min, and the treatment time of slightly acidic chemical nickel-plating solution nickel plating is 15 ~ 55min.
7. a kind of magnesium alloy nickel plating technology according to claim 4 ~ 6 any one, is characterized in that: the pH value of alkaline electroless plating nickel solution is 10.5 ~ 11.5, and the pH value of slightly acidic chemical nickel-plating solution is 5.5 ~ 7.0.
8. a kind of magnesium alloy nickel plating technology according to claim 4 ~ 6 any one, is characterized in that: in step 1), after pickling, after the membrane removal of ultrasonic wave alkalescence, carries out activation treatment;
Alkalescence consists of except film:
Caustic alkali 10 ~ 30 g/L, sodium carbonate or salt of wormwood 5 ~ 10 g/L, potassium pyrophosphate 10 ~ 25 g/L, water-soluble citrate 10 ~ 20 g/L, organic polyphosphonic salt 10 ~ 30 g/L, surplus is deionized water.
9. a kind of magnesium alloy nickel plating technology according to claim 8, is characterized in that: ultrasonic wave alkalescence membrane removal treatment condition are: temperature 55 ~ 65 DEG C, time 0.5 ~ 3min, ultrasonic frequency 20 ~ 40KHz.
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| ITMI20131265A1 (en) * | 2013-07-29 | 2013-10-28 | Ivan Fischetto | PERFECTED PRETREATMENT SYSTEM FOR THE PURPOSES OF CHEMICAL NICKEL AND THE ADDITIONAL SURFACE TREATMENT OF MAGNESIUM (AND OF ALL ITS KNOWN ALLOYS) |
| CN104032287A (en) * | 2014-06-25 | 2014-09-10 | 河北镁轮镁合金科技有限公司 | Metallized plating solution and method for metallizing surface of magnesium alloy product |
| CN106119910B (en) * | 2016-08-31 | 2018-01-30 | 佛山市仁昌科技有限公司 | A kind of nanometer nickel solution and using its to communication filter carry out electric plating method |
| CN107815672A (en) * | 2017-11-08 | 2018-03-20 | 繁昌县晶鑫贸易有限公司 | A kind of production method of alkaline chemical nickel-plating applied on magnesium alloy |
| CN113502467A (en) * | 2021-07-09 | 2021-10-15 | 贵州理工学院 | Nickel-phosphorus plated part and low-temperature neutral simplified chemical nickel-phosphorus plating method |
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| CN1023026C (en) * | 1988-12-12 | 1993-12-08 | 中国科学院金属研究所 | Nickel chemical plating technology for surface of unstable chemcial property metal workpiece |
| CN1301881A (en) * | 1999-12-29 | 2001-07-04 | 上海雅驰科技发展有限公司 | Chemical nickel-plating solution and its preparation and using method |
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