CN108300985A - A kind of magnesium lithium alloy zinc dipping solution - Google Patents
A kind of magnesium lithium alloy zinc dipping solution Download PDFInfo
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- CN108300985A CN108300985A CN201810455213.1A CN201810455213A CN108300985A CN 108300985 A CN108300985 A CN 108300985A CN 201810455213 A CN201810455213 A CN 201810455213A CN 108300985 A CN108300985 A CN 108300985A
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- Prior art keywords
- zinc
- lithium alloy
- magnesium lithium
- acetate
- dipping solution
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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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/52—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating using reducing agents for coating with metallic material not provided for in a single one of groups C23C18/32 - C23C18/50
Abstract
The present invention relates to a kind of magnesium lithium alloy zinc dipping solutions, its mixed solution being made of zinc acetate, potassium pyrophosphate, sodium carbonate, potassium fluoride, nickel acetate, glycerine, water, concrete composition content are 15~30 g/L of zinc acetate, 120~150 g/L of potassium pyrophosphate, 6~10 g/L of sodium carbonate, 2~7 g/L of potassium fluoride, 0.2~1 g/L of nickel acetate, 20~60 ml/L of glycerine.Zinc dipping solution formula of the present invention is reasonable, and stable components, technical process is simple, can reduce the corrosion of magnesium lithium alloy matrix, the zinc-impregnating layer uniform and delicate of acquisition.The binding force for significantly improving subsequent chemistry plating nickel-phosphorus alloy layer, obtained ni-p alloy coating, by 250 DEG C of thermal shock tests, be not in fall off, peeling, be bubbled phenomena such as.
Description
Technical field
The invention belongs to technical field of surface, specifically a kind of magnesium lithium alloy zinc dipping solution.
Background technology
Magnesium lithium alloy is current most light alloy, and one of the alloy system that the ultralight high-strength alloy of development is most potential.Magnesium
Lithium alloy corrosion potential is often defeated by -1.625 V, its corrosion potential, corrosion current are below common magnesium and close under the same conditions
Gold.Therefore, when magnesium lithium alloy is using being surface-treated, complexity, intractability will far surpass other ordinary magnesium alloys.
Magnesium lithium alloy chemical nickel plating on surface has many advantages, such as uniform coating, good conductivity, surface-brightening.Magnesium lithium alloy
Nickel chemical plating technology intermediate layer handles process generally requires leaching zinc, to lay base subsequently to obtain the good ni-p alloy coating of binding force
Plinth.CN 103898563A disclose a kind of magnesium lithium alloy method for electroplating nickel on surface, and the leaching zinc that this method intermediate layer handles use is molten
The composition content of liquid is：30 ~ 50 g/L of zinc sulfate, 120 ~ 180 g/L of potassium pyrophosphate, 2 ~ 6 g/L of sodium fluoride, 3 ~ 8 g/ of sodium carbonate
L obtains zinc-impregnating layer and carries out electronickelling later.CN 105780073A disclose a kind of bottoming of cyanideless electro-plating nickel on magnesium lithium alloy
The composition content of method, zinc dipping solution therein is：5 ~ 15 g/L of zinc oxide, 40 ~ 80 g/L of potassium pyrophosphate, sodium citrate 20 ~
50 g/L, 5 ~ 10 g/L of 20 ~ 50 g/L of sodium gluconate, 5 ~ 10 g/L of potassium fluoride and sodium carbonate carry out bottoming for electronickelling.CN
101831641A discloses a kind of magnesium lithium alloy acidic zinc dipping solution and leaching zinc method, and zinc dipping solution composition content is：Chlorination
70 ~ 75 g/L of zinc, 8 ~ 10 g/L of malic acid, 2 ml/L of lactic acid, 4 ~ 5 g/L of sodium fluoride, carry out leaching zinc in acid condition, to
Uniform zinc-impregnating layer is obtained under less etching condition.But zinc dipping solution disclosed in the above-mentioned prior art is all aqueous solution,
In aqueous solution, lithium, magnesium in magnesium lithium alloy can react with water, make magnesium lithium alloy matrix excessive erosion, can not only reduce magnesium lithium
Alloy substrate self performance can also influence zinc-impregnating layer quality, cause subsequently to carry out when chemical nickel plating ni-p alloy coating binding force compared with
Difference, while also resulting in ni-p alloy coating rough surface, corrosion resistance reduction.
Invention content
The technical problem to be solved by the present invention is in order to overcome the above-mentioned deficiencies of the prior art, provide a kind of formula conjunction
Reason, stable components, technical process is simple, can reduce the corrosion of magnesium lithium alloy matrix, the zinc-impregnating layer uniform and delicate and energy of acquisition
Enhance the magnesium lithium alloy zinc dipping solution of follow-up magnesium lithium alloy Ni-P Chemical Plating Layer binding force.
The present invention solve above-mentioned technical problem the technical solution adopted is that：A kind of magnesium lithium alloy zinc dipping solution, feature exist
In：Its mixed solution being made of zinc acetate, potassium pyrophosphate, sodium carbonate, potassium fluoride, nickel acetate, glycerine and water, specific group
At content be 15~30 g/L of zinc acetate, 120~150 g/L of potassium pyrophosphate, 6~10 g/L of sodium carbonate, 2~7 g/L of potassium fluoride,
0.2~1 g/L of nickel acetate, 20~60 ml/L of glycerine.
Currently preferred solution formula is：20 g/L of zinc acetate, 138 g/L of potassium pyrophosphate, 8 g/L of sodium carbonate, fluorination
4 g/L of potassium, 0.6 g/L of nickel acetate, 40 ml/L of glycerine.
In use, carrying out leaching zinc processing to magnesium lithium alloy matrix using following technique：（1）By the magnesium lithium alloy after polishing into
Row alkali cleaning oil removing, is then washed；（2）Workpiece after alkali cleaning is subjected to pickling and removes descale, is then washed；（3）After pickling
Workpiece is activated, and is then washed；（4）It puts the workpiece in zinc dipping solution, first time leaching is carried out under certain temperature, time
Zinc；（5）After moving back zinc, second of leaching zinc is carried out under certain temperature, time.After processing, magnesium lithium alloy matrix obtains even and fine
Cause zinc-impregnating layer.
Using zinc acetate as main salt in zinc dipping solution of the present invention, potassium pyrophosphate is as complexant, and sodium carbonate is as pH tune
Agent is saved, potassium fluoride is as matrix surface activator, and nickel acetate is as additive；The third three are added in zinc dipping solution especially of the present invention
Alcohol, for glycerine as corrosion inhibiter, effect is to form alcohol water mixed solvent with water, solution polarity is reduced, third during soaking zinc
Triol has certain absorption on magnesium lithium alloy, reduces corrosion of the solution to magnesium lithium alloy matrix, makes zinc-impregnating layer uniform and delicate.It is right
According to the prior art, zinc dipping solution formula of the present invention is reasonable, and stable components, technical process is simple, can reduce magnesium lithium alloy matrix
Corrosion, the zinc-impregnating layer uniform and delicate of acquisition.The binding force for significantly improving subsequent chemistry plating nickel-phosphorus alloy layer, by 250 DEG C of heat
Shake experiment, be not in fall off, peeling, be bubbled phenomena such as.
Specific implementation mode
With reference to specific embodiment, the present invention is described in more detail.
A kind of magnesium lithium alloy zinc dipping solution of the present invention, is by zinc acetate, potassium pyrophosphate, sodium carbonate, potassium fluoride, acetic acid
The mixed solution of nickel, glycerine and water composition, concrete composition content is 15~30 g/L of zinc acetate, potassium pyrophosphate 120~150
G/L, 6~10 g/L of sodium carbonate, 2~7 g/L of potassium fluoride, 0.2~1 g/L of nickel acetate, 20~60 ml/L of glycerine.
Using zinc acetate as main salt in zinc dipping solution of the present invention, effect is to provide zinc ion for leaching zinc, and acetate subtracts
Few solution corrosion；For potassium pyrophosphate as complexant, effect is that pyrophosphate is complexed with zinc ion, forms coordination ion；Carbonic acid
For sodium as pH adjusting agent, effect is to adjust the acid-base value of solution；For potassium fluoride as matrix surface activator, effect is to make magnesium
Lithium alloy surface active reduces the corrosion of magnesium；For nickel acetate as additive, effect is that zinc-impregnating layer is made to be more evenly distributed；The third three
For alcohol as corrosion inhibiter, effect is to form alcohol water mixed solvent with water, reduces solution polarity, glycerine is in magnesium during soaking zinc
There is certain absorption on lithium alloy, reduces corrosion of the solution to magnesium lithium alloy matrix, make zinc-impregnating layer uniform and delicate.
In use, carrying out leaching zinc processing to magnesium lithium alloy matrix using following technique：（1）By the magnesium lithium alloy after polishing into
Row alkali cleaning oil removing, is then washed；（2）Workpiece after alkali cleaning is subjected to pickling and removes descale, is then washed；（3）After pickling
Workpiece is activated, and is then washed；（4）It puts the workpiece in zinc dipping solution, leaching zinc for the first time, time 45- is carried out at 45 DEG C
70 seconds；（5）After moving back zinc, second of leaching zinc, time 20-30 second are carried out at 45 DEG C；Magnesium lithium alloy matrix obtains uniform and delicate leaching
Zinc layers.
Zinc dipping solution formula of the present invention is reasonable, and stable components, technical process is simple, can reduce the corruption of magnesium lithium alloy matrix
Erosion, the zinc-impregnating layer uniform and delicate of acquisition.The binding force for significantly improving subsequent chemistry plating nickel-phosphorus alloy layer is tried by 250 DEG C of thermal shocks
Test, be not in fall off, peeling, be bubbled phenomena such as.
Embodiment 1：A kind of magnesium lithium alloy zinc dipping solution, concrete component content are：20 g/L of zinc acetate, potassium pyrophosphate
138 g/L, 8 g/L of sodium carbonate, 4 g/L of potassium fluoride, 0.6 g/L of nickel acetate, 40 ml/L of glycerine.
In use, carrying out leaching zinc processing to magnesium lithium alloy matrix using following technique：（1）By the magnesium lithium alloy after polishing into
Row alkali cleaning oil removing, is then washed；（2）Workpiece after alkali cleaning is subjected to pickling and removes descale, is then washed；（3）After pickling
Workpiece is activated, and is then washed；（4）It puts the workpiece in zinc dipping solution, leaching zinc for the first time, time 60 is carried out at 45 DEG C
Second；（5）After moving back zinc, second of leaching zinc, 20 seconds time are carried out at 45 DEG C；Uniform and delicate is obtained on magnesium lithium alloy matrix soaks zinc
Layer.
By the addition of glycerine, alcohol water mixed solvent is formed with water, reduces solution polarity, glycerine exists during soaking zinc
There is certain absorption on magnesium lithium alloy, reduces corrosion of the solution to magnesium lithium alloy matrix.Zinc-impregnating layer is obtained by secondary soaking zinc
Grain is careful, covering is uniform, binding force is good.
Embodiment 2：A kind of magnesium lithium alloy zinc dipping solution, concrete component content are：15 g/L of zinc acetate, potassium pyrophosphate
150 g/L, 7 g/L of sodium carbonate, 7 g/L of potassium fluoride, 0.8 g/L of nickel acetate, 50 ml/L of glycerine.
In use, carrying out leaching zinc processing to magnesium lithium alloy matrix using following technique：（1）By the magnesium lithium alloy after polishing into
Row alkali cleaning oil removing, is then washed；（2）Workpiece after alkali cleaning is subjected to pickling and removes descale, is then washed；（3）After pickling
Workpiece is activated, and is then washed；（4）It puts the workpiece in zinc dipping solution, leaching zinc for the first time, time 70 is carried out at 45 DEG C
Second；（5）After moving back zinc, second of leaching zinc, 25 seconds time are carried out at 45 DEG C；Uniform and delicate is obtained on magnesium lithium alloy matrix soaks zinc
Layer.
The zinc-impregnating layer particle that obtains by secondary soaking zinc is smaller, fine uniform, coverage are preferable.
Embodiment 3：A kind of magnesium lithium alloy zinc dipping solution, concrete component content are：18 g/L of zinc acetate, potassium pyrophosphate
120 g/L, 10 g/L of sodium carbonate, 6 g/L of potassium fluoride, 0.5 g/L of nickel acetate, 45 ml/L of glycerine.
In use, carrying out leaching zinc processing to magnesium lithium alloy matrix using following technique：（1）By the magnesium lithium alloy after polishing into
Row alkali cleaning oil removing, is then washed；（2）Workpiece after alkali cleaning is subjected to pickling and removes descale, is then washed；（3）After pickling
Workpiece is activated, and is then washed；（4）It puts the workpiece in zinc dipping solution, leaching zinc for the first time, time 65 is carried out at 45 DEG C
Second；（5）After moving back zinc, second of leaching zinc, 20 seconds time are carried out at 45 DEG C；Uniform and delicate is obtained on magnesium lithium alloy matrix soaks zinc
Layer.
The zinc-impregnating layer particle that is obtained by secondary soaking zinc is larger, dense uniform, coverage are preferable.
Embodiment 4：A kind of magnesium lithium alloy zinc dipping solution, concrete component content are：20 g/L of zinc acetate, potassium pyrophosphate
140 g/L, 6 g/L of sodium carbonate, 5 g/L of potassium fluoride, 1 g/L of nickel acetate, 20 ml/L of glycerine.
In use, carrying out leaching zinc processing to magnesium lithium alloy matrix using following technique：（1）By the magnesium lithium alloy after polishing into
Row alkali cleaning oil removing, is then washed；（2）Workpiece after alkali cleaning is subjected to pickling and removes descale, is then washed；（3）After pickling
Workpiece is activated, and is then washed；（4）It puts the workpiece in zinc dipping solution, leaching zinc for the first time, time 60 is carried out at 45 DEG C
Second；（5）After moving back zinc, second of leaching zinc, 25 seconds time are carried out at 45 DEG C；Uniform and delicate is obtained on magnesium lithium alloy matrix soaks zinc
Layer.By secondary soaking zinc obtain zinc-impregnating layer particle it is careful, covering uniformly, good bonding strength.
Embodiment 5：A kind of magnesium lithium alloy zinc dipping solution, composition content are：30 g/L of zinc acetate, 150 g/ of potassium pyrophosphate
L, 9 g/L of sodium carbonate, 2 g/L of potassium fluoride, 0.4 g/L of nickel acetate, 35 ml/L of glycerine.
In use, carrying out leaching zinc processing to magnesium lithium alloy matrix using following technique：（1）By the magnesium lithium alloy after polishing into
Row alkali cleaning oil removing, is then washed；（2）Workpiece after alkali cleaning is subjected to pickling and removes descale, is then washed；（3）After pickling
Workpiece is activated, and is then washed；（4）It puts the workpiece in zinc dipping solution, leaching zinc for the first time, time 55 is carried out at 45 DEG C
Second；（5）After moving back zinc, second of leaching zinc, 25 seconds time are carried out at 45 DEG C；Uniform and delicate is obtained on magnesium lithium alloy matrix soaks zinc
Layer.By secondary soaking zinc obtain zinc-impregnating layer particle it is careful, covering uniformly, good bonding strength.
Embodiment 6：A kind of magnesium lithium alloy zinc dipping solution, concrete component content are：Zinc acetate 28g/L, potassium pyrophosphate 130
G/L, 8 g/L of sodium carbonate, 4.5 g/L of potassium fluoride, 0.2 g/L of nickel acetate, 60 ml/L of glycerine.
In use, carrying out leaching zinc processing to magnesium lithium alloy matrix using following technique：（1）By the magnesium lithium alloy after polishing into
Row alkali cleaning oil removing, is then washed；（2）Workpiece after alkali cleaning is subjected to pickling and removes descale, is then washed；（3）After pickling
Workpiece is activated, and is then washed；（4）It puts the workpiece in zinc dipping solution, leaching zinc for the first time, time 55 is carried out at 45 DEG C
Second；（5）After moving back zinc, second of leaching zinc, 20 seconds time are carried out at 45 DEG C；Uniform and delicate is obtained on magnesium lithium alloy matrix soaks zinc
Layer.By secondary soaking zinc obtain zinc-impregnating layer particle it is careful, covering uniformly, good bonding strength.
Claims (2)
1. a kind of magnesium lithium alloy zinc dipping solution, it is characterised in that：It is by zinc acetate, potassium pyrophosphate, sodium carbonate, potassium fluoride, second
The mixed solution of sour nickel, glycerine and water composition, concrete composition content is 15~30 g/L of zinc acetate, potassium pyrophosphate 120~150
G/L, 6~10 g/L of sodium carbonate, 2~7 g/L of potassium fluoride, 0.2~1 g/L of nickel acetate, 20~60 ml/L of glycerine.
2. magnesium lithium alloy zinc dipping solution according to claim 1, it is characterized in that：Its concrete composition content is：Zinc acetate 20
G/L, 138 g/L of potassium pyrophosphate, 8 g/L of sodium carbonate, 4 g/L of potassium fluoride, 0.6 g/L of nickel acetate, 40 ml/L of glycerine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810455213.1A CN108300985A (en) | 2018-05-14 | 2018-05-14 | A kind of magnesium lithium alloy zinc dipping solution |
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| CN201810455213.1A CN108300985A (en) | 2018-05-14 | 2018-05-14 | A kind of magnesium lithium alloy zinc dipping solution |
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Citations (7)
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|---|---|---|---|---|
| CN101525711A (en) * | 2009-04-22 | 2009-09-09 | 东南大学 | Magnesium alloy with zinc and nickel compound plating layers and preparation method thereof |
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| CN103898563A (en) * | 2014-03-21 | 2014-07-02 | 哈尔滨工程大学 | Method for electroplating nickel on surface of magnesium-lithium alloy |
| CN104232972A (en) * | 2014-09-10 | 2014-12-24 | 上海交通大学 | Degradable open porous magnesium and magnesium alloy biomaterial and preparation method thereof |
| CN104674332A (en) * | 2015-03-23 | 2015-06-03 | 日照天一生物医疗科技有限公司 | Treatment liquid and treatment method of magnesium alloy stent |
| CN107313031A (en) * | 2017-06-28 | 2017-11-03 | 西安理工大学 | A kind of chemical nickel-plating method for surface for improving corrosion stability of magnesium alloy |
-
2018
- 2018-05-14 CN CN201810455213.1A patent/CN108300985A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101525711A (en) * | 2009-04-22 | 2009-09-09 | 东南大学 | Magnesium alloy with zinc and nickel compound plating layers and preparation method thereof |
| CN103774130A (en) * | 2012-10-24 | 2014-05-07 | 汉达精密电子(昆山)有限公司 | Chemical conversion treatment liquid, preparation method, chemical conversion treatment method and product |
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| CN103898563A (en) * | 2014-03-21 | 2014-07-02 | 哈尔滨工程大学 | Method for electroplating nickel on surface of magnesium-lithium alloy |
| CN104232972A (en) * | 2014-09-10 | 2014-12-24 | 上海交通大学 | Degradable open porous magnesium and magnesium alloy biomaterial and preparation method thereof |
| CN104674332A (en) * | 2015-03-23 | 2015-06-03 | 日照天一生物医疗科技有限公司 | Treatment liquid and treatment method of magnesium alloy stent |
| CN107313031A (en) * | 2017-06-28 | 2017-11-03 | 西安理工大学 | A kind of chemical nickel-plating method for surface for improving corrosion stability of magnesium alloy |
Non-Patent Citations (1)
| Title |
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| 孙忠武等: ""镁合金浸锌合金溶液中金属离子对浸锌层的影响"", 《材料保护》 * |
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Application publication date: 20180720 |