CN109112509A - A kind of high corrosion-resistant chemical nickel-plating liquid and preparation method thereof - Google Patents
A kind of high corrosion-resistant chemical nickel-plating liquid and preparation method thereof Download PDFInfo
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- CN109112509A CN109112509A CN201811270282.1A CN201811270282A CN109112509A CN 109112509 A CN109112509 A CN 109112509A CN 201811270282 A CN201811270282 A CN 201811270282A CN 109112509 A CN109112509 A CN 109112509A
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- chemical nickel
- nickel
- high corrosion
- plating liquid
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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
- C23C18/31—Coating with metals
- C23C18/32—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
- C23C18/34—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents
- C23C18/36—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents using hypophosphites
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- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Abstract
The present invention relates to a kind of high anti-corrosion chemical nickel plating baths, and the chemistry nickel plating bath includes following component: Essential Chemistry nickel liquid, wetting agent, brightener, stabilizer；Wherein: the Essential Chemistry nickel liquid includes following ingredient by weight: nickel sulfate, sodium hypophosphite, citric acid, lactic acid, propionic acid and sodium acetate；The wetting agent is polyethylene glycol, and the brightener is 2-mercaptobenzothiazole and polyalkylene imine, and the stabilizer is 3- sulphur-isothiourea propane sulfonic acid compound, 3- amino -5- sulfydryl -1,2, the mixture of 4- triazole, S- carboxyethyl isothiuronium salts one or more.High anti-corrosion chemical nickel plating bath of the invention, 85~95 DEG C of operating temperature, plating 10~12 μm/h of scooter or so, coating even compact is bright, and corrosion resistance is good, and for ordinary carbon steel plating thickness of coating at 10 μm or more, resistance to neutral salt spray is up to 48h or more.
Description
Technical field
The invention belongs to electroless plating techniques field, it is related to a kind of high corrosion-resistant chemical nickel-plating liquid and preparation method thereof.
Background technique
Chemical nickel plating is so that nickel ion is reduced into metallic nickel, and in plating piece by the way that reducing agent appropriate is added into solution
The process of surface deposition.It is compared with electronickelling, chemical nickel plating has many advantages, be mainly shown as: 1) coating is uniform, composition
For nickel or the alloy of nickel and other elements, structure is compact fine and closely woven, and the electroless nickel layer of condition of equivalent thickness compares, chemical Ni-plating layer it is micro-
Hole is less than electroless nickel layer, thus the Corrosion Protection of its coating is far superior to electroless nickel layer；2) due to the cause of chemical Ni-plating layer
Close structure has very high hardness, thus has excellent wearability；3) covering power is good, easy to operate, is easy to grasp, match
Slot and adjustment are very easy；4) plating solution long service life；5) plating solution has formed seriation commodity；6) by plating, make certain gold
Belong to and nonmetallic with soldering and soldering ability；7) high production efficiency, at low cost；8) to the less pollution of environment.
Since Brenner and Riddle invention chemical nickel technology, chemical Ni-plating layer with its excellent performance purposes very
Extensively, such as electronics and computer, chemistry and chemical industry, machinery, aerospace, oil and natural gas, automobile, food processing, doctor
The industrial departments such as medicine and weaving.China's chemical plating is started late, and there is also many problems in terms of industrial application, as plating solution is inadequate
Stablize, deposition velocity is slow, and service life is short, at high cost etc.；Chemical nickel is directly used as its Corrosion Protection of protective coating at present
Still not good enough, 10 μm of high-phosphorus chemical nickel layers usually on carbon steel, neutral salt spray test is only capable of passing through 24-36h.In automobile, motor
The higher corrosion resistances of demand of all kinds of expensive goods such as the accessories such as vehicle and aluminum alloy part is expired with MULTI-LAYER NICKEL plating
Foot requires, and complex process is at high cost.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of high corrosion-resistant chemical nickel-plating liquids and preparation method thereof.
In order to achieve the above objectives, the invention provides the following technical scheme:
1. a kind of high corrosion-resistant chemical nickel-plating liquid, the high corrosion-resistant chemical nickel-plating liquid includes following component: Essential Chemistry
Nickel liquid, wetting agent, brightener and stabilizer.
Further, the Essential Chemistry nickel liquid includes nickel sulfate, sodium hypophosphite, citric acid, lactic acid, propionic acid and sodium acetate.
Further, based on mass concentration, Essential Chemistry nickel liquid each component additive amount are as follows: 20~30g/L of nickel sulfate, hypophosphorous acid
25~35g/L of sodium, 15~20g/L of citric acid, 10~15g/L of 10~15g/L of lactic acid, 5~8g/L of propionic acid and sodium acetate.
Further, the wetting agent is polyethylene glycol.
Further, molecular weight polyethylene glycol is 2000~6000.
Further, polyethylene glycol mass concentration is 0.01~0.05g/L.
Further, the brightener includes 2-mercaptobenzothiazole and polyalkylene imine, and the polyalkylene imine molecular weight is
5000。
Further, based on mass concentration, 3~5mg/L of 2-mercaptobenzothiazole, 1~2mg/L of polyalkylene imine.
Further, the stabilizer is 3- sulphur-isothiourea propane sulfonic acid compound, 3- amino -5- sulfydryl -1,2,4- tri-
The mixture of azoles, S- carboxyethyl isothiuronium salts one or more.
Further, based on mass concentration, stabilizer is 5~10mg/L.
2. a kind of the step of preparation method of high corrosion-resistant chemical nickel-plating liquid, preparation method are as follows:
(1) Essential Chemistry nickel liquid is prepared using water；
(2) quantitative wetting agent, brightener and stabilizer are added into above-mentioned solution, is sufficiently stirred；
(3) pH adjustment 4.6-5.2 is finally used into water constant volume with the ammonium hydroxide of 1:1, can be prepared by the high corrosion-resistant chemical plating
Nickel liquid.
Further, the Essential Chemistry nickel liquid each component additive amount are as follows: 20~30g/L of nickel sulfate, sodium hypophosphite 25~
35g/L, 15~20g/L of citric acid, 10~15g/L of 10~15g/L of lactic acid, 5~8g/L of propionic acid and sodium acetate.
Further, quantitative nickel sulfate and citric acid, lactic acid, propionic acid mixed dissolution are finally first added into quantitative vinegar
Sour sodium and sodium hypophosphite, are sufficiently stirred.
Further, the water is deionized water.
The beneficial effects of the present invention are: high corrosion-resistant chemical nickel-plating liquid of the invention is free of the heavy metal ion such as lead cadmium,
Meet environment protection requirement；Bath stability is high, and the consumption experiment of 6 periods is not decomposed, and plating solution plating speed stablizes 10~
12 μm/h is convenient for control.Plating solution has extremely strong Surface flat to microcosmic gully, and coating crystallizes careful light, and porosity is extremely low, energy
Greatly improve the protective performance of coating, ordinary carbon steel plating thickness of coating at 10 μm, neutral salt spray test 48h with
On compared with commercially available product at 24-36 hours, show higher corrosion resistance.
Detailed description of the invention
In order to keep the purpose of the present invention, technical scheme and beneficial effects clearer, the present invention provides following attached drawing and carries out
Illustrate:
Fig. 1 is the chemical Ni-plating layer outside drawing of embodiment 1；
Fig. 2 is the chemical Ni-plating layer outside drawing of embodiment 2；
Fig. 3 is the chemical Ni-plating layer outside drawing of embodiment 3.
Specific embodiment
Below in conjunction with attached drawing, a preferred embodiment of the present invention will be described in detail.Specific item is not specified in embodiment
The experimental method of part, usually according to conventional conditions or according to the manufacturer's recommendations.
Embodiment 1
The high corrosion-resistant chemical nickel-plating liquid of the present embodiment includes following component: chemical nickel basal liquid, wetting agent, brightener,
Stabilizer.
Wherein: the chemical nickel basal liquid is nickel sulfate 25g/L, sodium hypophosphite 30g/L, citric acid 15g/L, lactic acid 10g/
L, propionic acid 5g/L, sodium acetate 10g/L；The wetting agent is polyethylene glycol (M=6000) 0.02g/L；The brightener is 2- mercapto
Base benzothiazole 5mg/L, polyalkylene imine (M=5000) 1mg/L；The stabilizer is S- carboxyethyl isothiuronium salts 5mg/L；This
The preparation method of the high corrosion-resistant chemical nickel-plating liquid of embodiment, includes the following steps:
(1) basal liquid is prepared using deionized water, first by quantitative nickel sulfate and citric acid, lactic acid, propionic acid mixed dissolution,
Quantitative sodium acetate and sodium hypophosphite are finally added, is sufficiently stirred；
(2) quantitative wetting agent, brightener and stabilizer are added into above-mentioned solution, is sufficiently stirred；
(3) pH is adjusted to 4.8 ranges with the ammonium hydroxide of 1:1, reusing deionized water constant volume, to can be prepared by the height anti-corrosion
Property chemical nickel-plating liquid.The ammonium hydroxide of the 1:1 is that concentrated ammonia liquor and water 1:1 volume ratio are formulated.
The high corrosion-resistant chemical nickel-plating liquid requirement of the present embodiment:
The operating temperature of the electroplate liquid of the present embodiment is 90 DEG C.
The work pH of the electroplate liquid of the present embodiment is 4.8.
Plating time is 60min.
The high corrosion-resistant chemical nickel-plating liquid of the present embodiment is tested:
1, the appearance of coating, thickness and corrosion resistance detection:
Test method: in the high corrosion-resistant chemical nickel-plating liquid beaker that 1L the present embodiment is obtained, constant temperature is to 90 DEG C, with common
Carbon steel test piece examination plating 60min, 3 test pieces of parallel testing observe Deposit appearance, carry out neutral salt spray test and commercially available two product
Compare corrosion resistance；
Test result: obtaining uniform bright coating, and Fig. 1 is the present embodiment test piece 1；Plating 60min thickness of coating and anti-corrosion
Property comparison it is as shown in Table 1 and Table 2:
Each thickness of test piece of table 1 and appearance
Each test piece of table 2 and commercial product neutral salt spray test result
Plating speed is the thickness of unit time deposited plating layer, and 11.63 μm/h then indicates that 1h can deposit 11.63 μm of coating,
2h is then 23.26 μm.
2, bath stability is tested
Test method: in the high corrosion-resistant chemical nickel-plating liquid beaker that 1L the present embodiment is obtained, constant temperature is to 90 DEG C, with common
Carbon steel test piece examination plating 60min, 3 test pieces of parallel testing observe Deposit appearance, carry out neutral salt spray test and commercially available two product
Compare corrosion resistance；
Embodiment 2
The high corrosion-resistant chemical nickel-plating liquid of the present embodiment includes following component: chemical nickel basal liquid, wetting agent, brightener,
Stabilizer.
Wherein: the chemical nickel basal liquid is nickel sulfate 25g/L, sodium hypophosphite 30g/L, citric acid 15g/L, lactic acid 10g/
L, propionic acid 5g/L, sodium acetate 10g/L；The wetting agent is polyethylene glycol (M=6000) 0.02g/L；The brightener is 2- mercapto
Base benzothiazole 5mg/L, polyalkylene imine (M=5000) 1mg/L；The stabilizer is 3- sulphur-isothiourea propane sulfonic acid compound
5mg/L；The preparation method of the high corrosion-resistant chemical nickel-plating liquid of the present embodiment, includes the following steps:
(1) basal liquid is prepared using deionized water, first by quantitative nickel sulfate and citric acid, lactic acid, propionic acid mixed dissolution,
Quantitative sodium acetate and sodium hypophosphite are finally added, is sufficiently stirred；
(2) quantitative wetting agent, brightener and stabilizer are added into above-mentioned solution, is sufficiently stirred；
(3) pH is adjusted to 4.8 or so with the ammonium hydroxide of 1:1, then can be prepared by the high corrosion-resistant with deionized water constant volume
Chemical nickel-plating liquid.
The high corrosion-resistant chemical nickel-plating liquid requirement of the present embodiment:
The operating temperature of the electroplate liquid of the present embodiment is 90 DEG C.
The work pH of the electroplate liquid of the present embodiment is 4.8.
Plating time is 60min.
The high corrosion-resistant chemical nickel-plating liquid of the present embodiment is tested:
1, the appearance of coating, thickness and corrosion resistance detection:
Test method: in the high corrosion-resistant chemical nickel-plating liquid beaker that 1L the present embodiment is obtained, constant temperature is to 90 DEG C, with common
Carbon steel test piece examination plating 60min, 3 test pieces of parallel testing observe Deposit appearance, carry out neutral salt spray test and commercially available two product
Compare corrosion resistance；
Test result: obtaining uniform bright coating, and Fig. 2 is the present embodiment test piece 1；Plating 60min thickness of coating and anti-corrosion
Property is as shown in Table 3 and Table 4:
Each thickness of test piece of table 3 and appearance
Each test piece of table 4 and commercial product neutral salt spray test result
Embodiment 3
The high corrosion-resistant chemical nickel-plating liquid of the present embodiment includes following component: chemical nickel basal liquid, wetting agent, brightener,
Stabilizer.
Wherein: the chemical nickel basal liquid is nickel sulfate 25g/L, sodium hypophosphite 30g/L, citric acid 15g/L, lactic acid 10g/
L, propionic acid 5g/L, sodium acetate 10g/L；The wetting agent is polyethylene glycol (M=6000) 0.02g/L；The brightener is 2- mercapto
Base benzothiazole 5mg/L, polyalkylene imine (M=5000) 1mg/L；The stabilizer is 3- amino -5- sulfydryl -1,2,4- triazole
5mg/L；The preparation method of the high corrosion-resistant chemical nickel-plating liquid of the present embodiment, includes the following steps:
(1) basal liquid is prepared using deionized water, first by quantitative nickel sulfate and citric acid, lactic acid, propionic acid mixed dissolution,
Quantitative sodium acetate and sodium hypophosphite are finally added, is sufficiently stirred；
(2) quantitative wetting agent, brightener and stabilizer are added into above-mentioned solution, is sufficiently stirred；
(3) pH is adjusted to 4.8 or so with the ammonium hydroxide of 1:1, then can be prepared by the high corrosion-resistant with deionized water constant volume
Chemical nickel-plating liquid.
The high corrosion-resistant chemical nickel-plating liquid requirement of the present embodiment:
The operating temperature of the electroplate liquid of the present embodiment is 90 DEG C.
The work pH of the electroplate liquid of the present embodiment is 4.8.
Plating time is 60min.
The high corrosion-resistant chemical nickel-plating liquid of the present embodiment is tested:
1, the appearance of coating, thickness and corrosion resistance detection:
Test method: in the high corrosion-resistant chemical nickel-plating liquid beaker that 1L the present embodiment is obtained, constant temperature is to 90 DEG C, with common
Carbon steel test piece examination plating 60min, 3 test pieces of parallel testing observe Deposit appearance, carry out neutral salt spray test and commercially available two product
Compare corrosion resistance；
Test result: obtaining uniform bright coating, and Fig. 3 is picture after 1 test piece 1 of the present embodiment plating；Plating 60min coating
Thickness and corrosion resistance be as shown in table 5 and table 6:
Each thickness of test piece of table 5 and appearance
Each test piece of table 6 and commercial product neutral salt spray test result
Finally, it is stated that preferred embodiment above is only used to illustrate the technical scheme of the present invention and not to limit it, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (10)
1. a kind of high corrosion-resistant chemical nickel-plating liquid, which is characterized in that the high corrosion-resistant chemical nickel-plating liquid includes following component: base
Plinth chemical nickel liquid, wetting agent, brightener and stabilizer.
2. high corrosion-resistant chemical nickel-plating liquid according to claim 1, which is characterized in that the Essential Chemistry nickel liquid includes sulphur
Sour nickel, sodium hypophosphite, citric acid, lactic acid, propionic acid and sodium acetate.
3. high corrosion-resistant chemical nickel-plating liquid according to claim 2, which is characterized in that based on mass concentration, Essential Chemistry
Nickel liquid each component additive amount are as follows: 20~30g/L of nickel sulfate, 25~35g/L of sodium hypophosphite, 15~20g/L of citric acid, lactic acid 10~
10~15g/L of 15g/L, 5~8g/L of propionic acid and sodium acetate.
4. high corrosion-resistant chemical nickel-plating liquid according to claim 1, which is characterized in that the wetting agent is polyethylene glycol,
Polyethylene glycol mass concentration is 0.01~0.05g/L.
5. high corrosion-resistant chemical nickel-plating liquid according to claim 1, which is characterized in that the brightener includes 2- sulfydryl benzene
And thiazole and polyalkylene imine, the polyalkylene imine molecular weight are 5000.
6. high corrosion-resistant chemical nickel-plating liquid according to claim 7, which is characterized in that based on mass concentration, 2- sulfydryl benzene
And 3~5mg/L of thiazole, 1~2mg/L of polyalkylene imine.
7. high corrosion-resistant chemical nickel-plating liquid according to claim 1, which is characterized in that the stabilizer is 3- sulphur-different sulphur
The mixing of urea propane sulfonic acid compound, 3- amino -5- sulfydryl -1,2,4- triazole, S- carboxyethyl isothiuronium salts one or more
Object.
8. high corrosion-resistant chemical nickel-plating liquid according to claim 1, which is characterized in that based on mass concentration, stabilizer 5
~10mg/L.
9. the preparation method of any one of the claim 1-8 high corrosion-resistant chemical nickel-plating liquid, which is characterized in that
(1) Essential Chemistry nickel liquid is prepared using water；
(2) quantitative wetting agent, brightener and stabilizer are added into above-mentioned solution, is sufficiently stirred；
(3) pH is adjusted into 4.6-5.2 with the ammonium hydroxide of 1:1, finally uses water constant volume, can be prepared by the high corrosion-resistant chemical nickel plating
Liquid.
10. the preparation method of high corrosion-resistant chemical nickel-plating liquid described in claim 9, which is characterized in that the water is deionized water.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811270282.1A CN109112509A (en) | 2018-10-29 | 2018-10-29 | A kind of high corrosion-resistant chemical nickel-plating liquid and preparation method thereof |
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| CN201811270282.1A CN109112509A (en) | 2018-10-29 | 2018-10-29 | A kind of high corrosion-resistant chemical nickel-plating liquid and preparation method thereof |
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Cited By (3)
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| CN110318045A (en) * | 2019-06-20 | 2019-10-11 | 深圳市宏达秋科技有限公司 | A kind of high stability chemical nickel-plating liquid and preparation method thereof |
| WO2021099475A1 (en) | 2019-11-20 | 2021-05-27 | Atotech Deutschland Gmbh | Electroless nickel alloy plating baths, a method for deposition of nickel alloys, nickel alloy deposits and uses of such formed nickel alloy deposits |
| CN114427087A (en) * | 2020-10-29 | 2022-05-03 | 东莞市铧美电子有限公司 | Electroless nickel plating composition for inductance core |
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