CN104152877B - Chemical nickel-plating liquor - Google Patents
Chemical nickel-plating liquor Download PDFInfo
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- CN104152877B CN104152877B CN201410342988.XA CN201410342988A CN104152877B CN 104152877 B CN104152877 B CN 104152877B CN 201410342988 A CN201410342988 A CN 201410342988A CN 104152877 B CN104152877 B CN 104152877B
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- plating liquid
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Abstract
The invention discloses chemical nickel-plating liquor. The chemical nickel-plating liquor is characterized by comprising the following components: 22g/L-35g/L of nickel salt, 15g/L-25g/L of hypophosphite, 200mL/L-250mL/L of compound complexing agent, 0.5mL/L-1.5mL/L of stabilizer and 0.5mL/L-2.0mL/L of phosphor content inhibitor. The liquor is worked in a nearly neutral condition, and is free of obvious alkaline corrosion and acid corrosion on a workpiece; and the mass content of the phosphor in the obtained coating is 0.3%-3.5%, and the coating is high in hardness and good in weldability.
Description
Technical field
The present invention relates to chemical plating nickel technology field, more particularly to a kind of chemical nickel-plating liquid.
Background technology
One kind with fastest developing speed in chemical plating.Plating solution salt, hypophosphite, boron typically based on nickel sulfate, nickel acetate etc.
Sodium hydride, borine etc. are reducing agent, then add various auxiliary agents.Acid solution at 90 DEG C or the neutral solution close to room temperature, alkali
Property solution in carry out operation, chemical plating nickel-phosphorus, chemical plating nickel-boron two big class are divided into the difference using reducing agent, the present invention visits
Beg for is that chemical plating nickel-phosphorus are this kind of.At present, low-phosphorous chemical plating nickel-phosphorus alloy, has hardness height, and solderability is good, Wear-resistant alkali corrosion-resistant
The advantages of, applied in a lot of fields.But the low-phosphorous chemical nickel-plating liquid currently using, is primarily present two problems：One is big
Many plating solutions working ph values are more than 8, and plating speed is low to be not suitable for locating workpiece in the basic conditions it is impossible to process some；Two is most
Chemical nickel-plating liquid it is difficult to obtain phosphorus mass content be less than 3.5%, especially less than 1.5% nickel-phosphorus coating.
Content of the invention
The purpose of the present invention is exactly a kind of low cost providing to solve the deficiency of prior art, applied widely,
It is suitable for carbon fiber, polymer-function material, the new material such as silicon materials carries out metalized, improve its electric conductivity, hardness, resistance to
The chemical nickel-plating liquid of mill performance.
The present invention is to realize above-mentioned purpose using following technical solution：A kind of chemical nickel-plating liquid it is characterised in that
Its component includes nickel salt 22-35g/L, hypophosphites 15-25g/L, compound complex agent 200-250mL/L, stabilizer 0.5-
1.5mL/L, phosphorus content inhibitor 0.5-2.0mL/L；
Described phosphorus content inhibitor, consists of：
Further illustrating as such scheme, described nickel salt is at least in nickel sulfate, Nickel dichloride. or nickel acetate
Kind.
Described hypophosphites are preferably sodium hypophosphite or potassium hypophosphite.
Described compound complex agent, consists of：
Described stabilizer, consists of：
The chemical nickel-plating liquid of the present invention, its operating temperature is 78-98 DEG C；Working ph values 5.8-7.5, using ammonia, hydrogen-oxygen
Change potassium or sodium hydroxide is adjusted.
The present invention using the beneficial effect that above-mentioned technical solution can reach is：
1st, the present invention adopts compound complex agent, introduces phosphorus content inhibitor, controls between solution ph 5.8-7.5, success
The mass content controlling phosphorus in coating, between 0.3-3.5%, does not produce obvious acid etching and alkaline etching to workpiece.
2nd, resulting solution of the present invention does not contain the material of the limited use of ROHS, product environmental protection；Raw materials used be easy to get, cost
Low.
3rd, the plating solution covering power that the present invention provides is strong, and coating morphology is good.
4th, the plating solution that the present invention provides is applied widely, is especially suitable for carbon fiber, polymer-function material, silicon materials etc.
New material carries out metalized, improves its electric conductivity, hardness, anti-wear performance.
Brief description
Fig. 1 is the electron scanning micrograph of embodiment 1 gained test piece coating；
Fig. 2 is the power spectrum test zone photo of embodiment 1 gained test piece coating；
Fig. 3 is the energy spectrum diagram of Fig. 2 corresponding region.
Specific embodiment
Below in conjunction with specific embodiment, specific embodiments of the present invention are described in further detail.
The present invention is a kind of chemical nickel-plating liquid, and its component includes nickel salt, hypophosphites, compound complex agent, stabilizer, phosphorus
Content inhibitor；The present invention pass through preferred compound complex agent, introduce phosphorus content inhibitor, with control solution ph 5.8-7.5 it
Between, successfully control the mass content of phosphorus in coating between 0.3-3.5%, no obvious alkaline etching and acid etching to workpiece.
The chemical nickel-plating liquid of the present invention, its operating temperature is 78-98 DEG C；Working ph values 5.8-7.5, using ammonia, hydrogen-oxygen
Change potassium or sodium hydroxide is adjusted.
Embodiment 1
The present embodiment carries out chemical nickel plating using the chemical nickel-plating liquid of the present invention to mild steel, and its operating process is as follows：
1st, 0.5g thiourea and 2g potassium iodate are placed in beaker, add deionized water, with magnetic stirrer until clear
Clearly, add deionized water constant volume in 1L volumetric flask, obtain stabiliser solution 1L；
2nd, by 2g sodium polydithio-dipropyl sulfonate and 0.5g N, N- Methyl disulfide acute pyogenic infection of nails amide propane sulfonic acid sodium puts into burning
In cup, add deionized water, with magnetic stirrer until clarification, add deionized water constant volume in 1L volumetric flask, obtain phosphorus
Content inhibitor solution 1L；
3rd, by 50g ammonium acetate, 50g lactic acid, 140g succinic acid is put in beaker, plus deionized water, is stirred with magnetic stirring apparatuss
Mix to clarification, in 1L volumetric flask, obtain compound complex agent 1L after constant volume；
Wherein, step 1,2,3 precedence can arbitrarily be exchanged；
4th, in 1L beaker, nickel sulfate hexahydrate 27g, sodium hypophosphite 20g, compound complex agent 200mL are added, stabilizer is molten
Liquid 1.0mL, phosphorus content inhibitor 1.0mL, add deionized water, with magnetic stirrer to clarification；Adjusted with potassium hydroxide
PH value of solution adjusts pH to 6.8 to 6.0 about, then with ammonia；Plus deionized water is settled to 1L, obtain the chemical nickel-plating liquid of the present invention
1L；
5th, the beaker that will be equipped with above-mentioned plating solution is placed in water-bath, 88 DEG C of constant temperature, by the mild steel of 7cm × 7cm × 0.2mm
Oil removing 2min in degreasing fluid, is then placed in putting into plating solution, plating 0.5h after activation 3min in 5% sulfuric acid solution.By plating
Test piece after end, cleans and dries up.Electroless nickel deposition speed is determined by weight method, using JSM-6510 scanning electron microscopy
Its surface topography of sem observation, and test its constituent content with the energy disperse spectroscopy of subsidiary INCA X-ACT.Scanning electron microscope is shone
Piece is shown in Fig. 1, and its multiple is 1000 times.In energy disperse spectroscopy test, test zone is shown in Fig. 2, and corresponding test result is shown in Fig. 3.Plate in Fig. 3
The layer corresponding peak of matrix Fe element does not mark.The sample elementary composition (weight) that energy spectrometer analysis obtain is：P0.69%,
Ni99.31%, that is, in coating, P element mass content is 0.69%.Take plating densities 8.5g/cm3, sedimentation rate is tried to achieve by weightening
For 8.6 μm/h.
Embodiment 2
The present embodiment carries out chemical nickel plating using the chemical nickel-plating liquid of the present invention to rustless steel, and its operating process is as follows：
1st, by 0.8g thiourea, 1g potassium iodide, 0.5g cerous sulfate is put in beaker, adds deionized water, uses magnetic stirring apparatuss
Stirring, until clarification, adds deionized water constant volume in 1L volumetric flask, obtains stabiliser solution 1L；
2nd, by 0.5g methylthiourea, 4g isothiourea propane sulfonic acid inner salt is put in beaker, adds deionized water, uses magnetic agitation
Device stirring, until clarification, adds deionized water constant volume in 1L volumetric flask, obtains phosphorus content inhibitor solution 1L；
3rd, by 40g Sodium Acetate Trihydrate, 70g lactic acid, 100g succinic acid is put in beaker, plus deionized water, is stirred with magnetic stirring apparatuss
Mix to clarification, in 1L volumetric flask, obtain compound complex agent 1L after constant volume；
Wherein, step 1,2,3 precedence can arbitrarily be exchanged；
4th, in 1L beaker, nickel sulfate hexahydrate 27g, sodium hypophosphite 22g, compound complex agent 200mL are added, stabilizer is molten
Liquid 0.8mL, phosphorus content inhibitor 1.5mL, add deionized water, with magnetic stirrer to clarification.Adjusted with potassium hydroxide
PH value of solution adjusts pH to 6.4 to 6.0 about, then with ammonia.Plus deionized water is settled to 1L, obtain the chemical nickel-plating liquid of the present invention
1L；
5th, the beaker that will be equipped with above-mentioned plating solution is placed in water-bath, constant temperature to 92 DEG C, by 4cm × 10cm × 0.2mm not
Rust steel disc oil removing 2min in degreasing fluid, then puts into plating solution, plating 0.5h after activation 2min in 5% sulfuric acid solution.Will
Plating terminate after test piece, clean dry up.Coating phosphorus content passes through atomic absorption spectrum (AAS) to be tested.Atomic absorption spectrum is surveyed
Trying phosphorus content step is：First the plating exfoliation in rustless steel test piece, then weigh quality of coating m, Ran Houyong with precision balance
Nitric acid dissolves coating, and is settled to 100mL.According to test request, solution is diluted to certain multiple.Use Atomic Absorption Spectrometer
Nickel ion quality in test diluent, and gross mass m1 peeling off nickel in coating is calculated according to extension rate.Phosphorus then can be tried to achieve
The mass content of element is (m-m1)/m.
In the present embodiment, in coating, the mass content of phosphorus is 0.78%.
Above-described is only the preferred embodiment of the present invention it is noted that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, some deformation can also be made and improve, these broadly fall into the present invention
Protection domain.
Claims (3)
1. a kind of chemical nickel-plating liquid is it is characterised in that its component includes nickel salt 22-35g/L, hypophosphites 15-25 g/L, answers
Close chelating agent 200-250 mL/L, stabilizer 0.5-1.5 mL/L, phosphorus content inhibitor 0.5-2.0 mL/L；
Described phosphorus content inhibitor, consists of：
Methylthiourea 0.5g/L,
Isothiourea propane sulfonic acid inner salt 4 g/L,
Water surplus；
Described compound complex agent, consists of：
Ammonium acetate or Sodium Acetate Trihydrate 40g/L,
Lactic acid 70g/L,
Succinic acid 100g/L,
Water surplus；
Described stabilizer, consists of：
Thiourea 0.8 g/L,
Potassium iodide 1 g/L,
Cerous sulfate 0.5 g/L,
Water surplus.
2. a kind of chemical nickel-plating liquid according to claim 1 is it is characterised in that described nickel salt is nickel sulfate, Nickel dichloride.
Or at least one in nickel acetate.
3. a kind of chemical nickel-plating liquid according to claim 1 it is characterised in that described hypophosphites be sodium hypophosphite or
Potassium hypophosphite.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410342988.XA CN104152877B (en) | 2014-07-17 | 2014-07-17 | Chemical nickel-plating liquor |
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|---|---|---|---|
| CN201410342988.XA CN104152877B (en) | 2014-07-17 | 2014-07-17 | Chemical nickel-plating liquor |
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| CN104152877B true CN104152877B (en) | 2017-02-15 |
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| CN106987829B (en) * | 2017-04-11 | 2018-03-20 | 深圳市创智成功科技有限公司 | Apply the formula for chemical plating nickel in FPC chemical nickel plating porpezite coating |
| CN108559979B (en) * | 2018-01-24 | 2020-05-08 | 永星化工(上海)有限公司 | Chemical nickel plating solution and preparation method thereof |
| 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 |
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| BE534701A (en) * | 1954-03-22 | |||
| CN101348905A (en) * | 2008-09-04 | 2009-01-21 | 南昌航空大学 | Middle-temperature acidic electroless nickel plating-phosphor alloy formula |
| CN102286735A (en) * | 2010-06-19 | 2011-12-21 | 比亚迪股份有限公司 | Chemical nickel plating solution |
| CN102021543B (en) * | 2010-12-10 | 2013-04-17 | 广州晋惠化工科技有限公司 | Chemical nickel-plating solution containing composite complexing agent |
| EP2551375A1 (en) * | 2011-07-26 | 2013-01-30 | Atotech Deutschland GmbH | Electroless nickel plating bath composition |
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Effective date of registration: 20170619 Address after: 528225, Foshan District, Guangdong City, Nanhai District, lion Town, Changhong Ridge Industrial Park, West Changxin Road, 3 (office building) two floor, B District Patentee after: Guangdong Zhuo Environmental Protection Technology Co., Ltd. Address before: Dali Town, Nanhai District Changhong Ling Industrial Zone 528200 Guangdong city of Foshan Province Patentee before: Guangdong Zhizhuo Precision Metal Technology Co., Ltd. |
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