CN102383151A - Nano semibright nickel plating solution - Google Patents
Nano semibright nickel plating solution Download PDFInfo
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- CN102383151A CN102383151A CN2011102860206A CN201110286020A CN102383151A CN 102383151 A CN102383151 A CN 102383151A CN 2011102860206 A CN2011102860206 A CN 2011102860206A CN 201110286020 A CN201110286020 A CN 201110286020A CN 102383151 A CN102383151 A CN 102383151A
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- nickel
- plating solution
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- bright nickel
- nickel plating
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Abstract
The invention discloses a nano semibright nickel plating solution, which belongs to technical field of surface treatment, and the ingredient of the solution comprises: 250-300 g/L of nickel sulfate, 35-50 g/L of nickel chloride, 40-50 g/L of boric acid, 1*10-3-5*10-3g/L of rare earth oxide, wherein the rare earth oxide is lanthanum oxide and/or yttrium oxide, compared with the existing semibright nickel plating solution, the invention is better on the plating solution dispersibility, can cause the plating layer to be bright and have fine crystallization, is small on pore number unit area, and can improve multiplayer nickel corrosivity.
Description
Technical field
The present invention relates to electroplate liquid, be specifically related to a kind of nanometer half bright nickel plating solution.
Background technology
Semi-bright nickel is middle layer commonly used in electroplating, and this coating also needs half bright nickel coatings compactness good except reaching leveling property, homogeneity and snappiness, coating as much as possible the light, and number of pores is few, so just helps the erosion resistance of MULTI-LAYER NICKEL.In modern times in the Electroplating Production, the half the same important position of occupying of bright nickel with bright nickel nickel plating.The main purpose of half bright nickel is not to decorate, but in order to improve the corrosion resistance nature of MULTI-LAYER NICKEL.The MULTI-LAYER NICKEL system of being made up of half bright nickel/high-sulfur nickel/bright nickel is the anode sacrificial, and one of corrosion proof important factor that influences this system is the potential difference of bright nickel and half bright nickel and bright nickel and high-sulfur nickel coatings.The sulphur massfraction 0.003% ~ 0.005% of half bright nickel coatings, its stabilizing potential is higher than bright nickel coating, thereby plays etch-proof purpose.And the hole of half bright nickel too much can cause antiseptic property to reduce greatly.Present major measure is in half bright nickel plating solution, to add additive to obtain the MULTI-LAYER NICKEL of high anti-corrosion.
In recent years, a lot of to the research of bright nickel additive both at home and abroad, bright nickel plating has reached perfect degree, and is still many far away from the bright nickel plating additive to the semi-bright nickel Study on Additive, and level is also lower.Use at present half more bright nickel additive to be butynediol, aldehydes and sulphosalicylic acid, tonka bean camphor is also arranged, the former luminance brightness is not good; The nickeling layer appearance luster almost is difficult to difference with common dark nickel; Though the latter has leveling property and certain luminance brightness preferably, plating bath is unstable, and coating fragility is big.There are some researches show as in electroplating half bright nickel-bright nickel coatings, using tensio-active agent as wetting agent; Surface tension through changing matrix surface can reduce number of pores, but discovers that through us the low of its coating unit surface number of pores of interpolation of tensio-active agent is not clearly.
Summary of the invention
It is relatively poor to the present invention seeks to solve existing half bright nickel coatings compactness, and the problem that number of pores is more provides a kind of and makes coating light and crystallization careful, and the unit surface number of pores is low, and solution dispersibility is good, can improve the corrosive nanometer of MULTI-LAYER NICKEL half bright nickel electroplating technology.
Above-mentioned technical purpose of the present invention is achieved through following technical scheme: a kind of nanometer half bright nickel plating solution, it is characterized in that: its composition comprises: single nickel salt 250 ~ 300 g/L, nickelous chloride 35 ~ 50 g/L, boric acid 40 ~ 50 g/L, rare earth oxide 1 * 10
-3~ 5 * 10
-3G/L.
Above-mentioned rare earth oxide is lanthanum trioxide and/or yttrium oxide.Lanthanum and yttrium REE are positioned at the 3rd subgroup of the periodic table of elements; Atomic structure is similar, and the outermost electron structure is identical, and its oxide compound is absorption and big to the dispersive ability influence easily; But, and be soluble in acid and generate corresponding salt because lanthanum trioxide and yttrium oxide are all water insoluble.Therefore the present invention adds acid to rare earth oxide to dissolving, to add in the electroplate liquid again.According to solution composition, said acid is hydrochloric acid and/or sulfuric acid.
The present invention's warp is experimental formula repeatedly, finds in principal constituent to be single nickel salt 250 ~ 300 g/L, nickelous chloride 35 ~ 50 g/L; After adding a spot of rare earth oxide in the half bright nickel plating solution of boric acid 40 ~ 50 g/L, during plating, on negative electrode, formed one deck cationic layer; When bivalent nickel ion when negative electrode moves, need overcome the reactive force of rare earth ion field, make the sedimentation velocity of nickelous reduce; When current density was big, the movement velocity of nickel ion strengthened, because the effect of rare earth ion field; The ion field that makes the big local rare earth of current density is than low local strong of current density, and this has caused the big local sedimentation velocity of nickel relatively of current density to reduce the place that current density is little; The place that hole is for example arranged, sediment-filled phase is to increasing, and it is high so just can to obtain the coating density; Number of pores is low, adds rare earth oxide and has played the dispersive ability that improves plating bath, made sedimentary nickel crystalline particle radius become nano level from the non-nano level, thereby obtain the coating of careful light.
As of the present invention preferred, said solution composition consists of: single nickel salt: 250 ~ 300 g/L, nickelous chloride: 35 ~ 50 g/L, boric acid 40 ~ 50 g/L, lanthanum trioxide or yttrium oxide 1 * 10
-3~ 5 * 10
-3G/L, wetting agent 1 ~ 3 mL/L fills and leads up agent 0.2 ~ 1.0 mL/L, softening agent 3 ~ 8 mL/L, water surplus.
As of the present invention preferred, said solution composition consists of: single nickel salt 250 ~ 300 g/L, nickelous chloride 35 ~ 50 g/L, boric acid 40 ~ 50 g/L, lanthanum trioxide 2 * 10
-3~ 4 * 10
-3G/L, yttrium oxide 5 * 10
-4~ 1 * 10
-3G/L, wetting agent 1 ~ 3 mL/L fills and leads up agent 0.2 ~ 1.0 mL/L, softening agent 3 ~ 8 mL/L, water surplus.
Further, solution composition according to the invention consists of: single nickel salt 280 g/L, nickelous chloride 45 g/L, boric acid 45g/L, lanthanum trioxide 3 * 10
-3G/L, yttrium oxide 1 * 10
-3G/L, wetting agent 2mL/L fills and leads up agent 0.5mL/L, softening agent 6mL/L, water surplus.
In order further to improve the compactness of coating and the dispersion force of plating bath; Reduce the generation of side reaction when electroplating; The present invention is cooperating of considered rare earth oxide and other additive also, and between this, the above-mentioned softening agent of the present invention is hexin two pure and mild SSs, HD-N etc.; These materials of long-term practice proof can be to reducing coating stress in electroplating process, and improving its flexibility has good effect with the increase covering power; It is above-mentioned that to fill and lead up agent be butynediol and verivate thereof; Above-mentioned wetting agent is commercially available half bright nickel low-foam wetting agents.
Electroplate liquid blending process operational condition of the present invention is: 50 ~ 60 ℃ of temperature, and pH4.0 ~ 4.5, pneumatic blending, wherein rare earth oxide is because water insoluble the need adds in the plating bath with acid to dissolving back, and it is solubilized that general 1g rare earth oxide uses 0.5 ~ 1mL acid.
In sum, the present invention compared with prior art has following outstanding advantage and beneficial effect:
1, adopts half bright nickel plating solution, half bright nickel coatings of the present invention light and fine and close more; Plating fluid power of the present invention is reduced to below 100 nanometers sedimentary crystal grain diameter of bright nickel coatings, compares with the double-deck nickel that existing MULTI-LAYER NICKEL system is formed to have better corrosion resistance nature;
2, the present invention passes through to add a spot of rare earth oxide, and matches with other additive, and through reasonable proportioning, gained coating unit surface number of pores is low, and the number of pores of half bright nickel coatings is 10 ~ 20/cm usually
2, the present invention can make it be reduced to 5/cm
2Below;
3, solution dispersibility of the present invention is good; The dispersive ability of plating bath is also referred to as covering power; Be that plating bath makes the equally distributed ability of coating; The size of this ability is to weigh the important symbol of plating solution performance quality, adopts far away, nearly cathode method that solution dispersibility of the present invention is measured, and solution dispersibility of the present invention is all more than 98.8%.
Embodiment
Below in conjunction with embodiment the present invention is done further explain.
Embodiment 1
A kind of nanometer half bright nickel plating bath, its composition consists of: single nickel salt 250 g/L, nickelous chloride 35 g/L, boric acid 40g/L, lanthanum trioxide 1 * 10
-3G/L, wetting agent 1mL/L fills and leads up agent 0.2mL/L, softening agent 6mL/L, water surplus.
Embodiment 2
A kind of nanometer half bright nickel plating bath, its composition consists of: single nickel salt 300 g/L, nickelous chloride 50 g/L, boric acid 50 g/L, yttrium oxide 5 * 10
-3, wetting agent 3mL/L fills and leads up agent 1.0mL/L, softening agent 8mL/L, water surplus.
Embodiment 3
A kind of nanometer half bright nickel plating bath, its composition consists of: single nickel salt 280 g/L, nickelous chloride 45 g/L, boric acid 45 g/L, yttrium oxide 2 * 10
-3, yttrium oxide 5 * 10
-4, wetting agent 2mL/L fills and leads up agent 0.6mL/L, softening agent 5mL/L, water surplus.
Embodiment 4
A kind of nanometer half bright nickel plating bath, its composition consists of: single nickel salt 280 g/L, nickelous chloride 45 g/L, boric acid 45g/L, lanthanum trioxide 3 * 10
-3G/L, yttrium oxide 1 * 10
-3G/L, wetting agent 2mL/L fills and leads up agent 0.5mL/L, softening agent 6mL/L, water surplus.
Embodiment 5
A kind of nanometer half bright nickel plating bath, its composition consists of: single nickel salt 280 g/L, nickelous chloride 45 g/L, boric acid 45g/L, lanthanum trioxide 4 * 10
-3G/L, yttrium oxide 8 * 10
-4G/L, wetting agent 2mL/L fills and leads up agent 0.5mL/L, softening agent 5mL/L, water surplus.
This specific embodiment only is to explanation of the present invention; It is not the restriction to invention; Those skilled in the art can make any modification to present embodiment as required after reading this specification sheets, but as long as in claim scope of the present invention, all receive the protection of patent law.
Claims (5)
1. a nanometer half bright nickel plating solution, it is characterized in that: its composition comprises: single nickel salt 250 ~ 300 g/L, nickelous chloride 35 ~ 50 g/L, boric acid 40 ~ 50 g/L, rare earth oxide 1 * 10
-3～5 * 10
-3G/L; Said rare earth oxide is lanthanum trioxide and/or yttrium oxide.
2. according to the said a kind of nanometer of claim 1 half bright nickel plating solution, it is characterized in that: said solution composition consists of: single nickel salt 250 ~ 300 g/L, nickelous chloride 35 ~ 50 g/L, boric acid 40 ~ 50 g/L, lanthanum trioxide or yttrium oxide 1 * 10
-3~ 5 * 10
-3G/L, wetting agent 1 ~ 3 mL/L fills and leads up agent 0.2 ~ 1.0 mL/L, softening agent 3 ~ 8 mL/L, water surplus.
3. according to the said a kind of nanometer of claim 1 half bright nickel plating solution, it is characterized in that: said solution composition consists of: single nickel salt 250 ~ 300 g/L, nickelous chloride 35 ~ 50 g/L, boric acid 40 ~ 50 g/L, lanthanum trioxide 2 * 10
-3~ 4 * 10
-3G/L, yttrium oxide 5 * 10
-4~ 1 * 10
-3G/L, wetting agent 1 ~ 3 mL/L fills and leads up agent 0.2 ~ 1.0 mL/L, softening agent 3 ~ 8 mL/L, water surplus.
4. according to the said a kind of nanometer of claim 3 half bright nickel plating solution, it is characterized in that: said solution composition consists of: single nickel salt 280 g/L, nickelous chloride 45 g/L, boric acid 45g/L, lanthanum trioxide 3 * 10
-3G/L, yttrium oxide 1 * 10
-3G/L, wetting agent 2mL/L fills and leads up agent 0.5mL/L, softening agent 6mL/L, water surplus.
5. according to claim 2 or 3 or 4 said a kind of nanometers half bright nickel plating solution, it is characterized in that: said to fill and lead up agent be butynediol and verivate thereof.
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|---|---|---|---|
| CN2011102860206A CN102383151A (en) | 2011-09-23 | 2011-09-23 | Nano semibright nickel plating solution |
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|---|---|---|---|
| CN2011102860206A CN102383151A (en) | 2011-09-23 | 2011-09-23 | Nano semibright nickel plating solution |
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| CN102383151A true CN102383151A (en) | 2012-03-21 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102978679A (en) * | 2012-08-10 | 2013-03-20 | 浙江东阳东磁有限公司 | Neodymium-iron-boron magnet nickel electroplating solution and use method thereof |
| CN105154934A (en) * | 2015-08-21 | 2015-12-16 | 无锡桥阳机械制造有限公司 | Yttrium-nickel alloy electroplate liquid and preparing method thereof |
| CN106191446A (en) * | 2016-07-05 | 2016-12-07 | 北京工业大学 | A kind of recovering rare earth Yt method of preparing resin surface composite deposite from waste phosphor powder |
| CN106400089A (en) * | 2016-06-03 | 2017-02-15 | 安徽长青电子机械（集团）有限公司 | Corrosion-resistant scaffolding composite electroplate liquid |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102978679A (en) * | 2012-08-10 | 2013-03-20 | 浙江东阳东磁有限公司 | Neodymium-iron-boron magnet nickel electroplating solution and use method thereof |
| CN102978679B (en) * | 2012-08-10 | 2015-09-16 | 浙江东阳东磁有限公司 | A kind of neodymium iron boron magnetic body nickel plating solution and using method thereof |
| CN105154934A (en) * | 2015-08-21 | 2015-12-16 | 无锡桥阳机械制造有限公司 | Yttrium-nickel alloy electroplate liquid and preparing method thereof |
| CN106400089A (en) * | 2016-06-03 | 2017-02-15 | 安徽长青电子机械（集团）有限公司 | Corrosion-resistant scaffolding composite electroplate liquid |
| CN106191446A (en) * | 2016-07-05 | 2016-12-07 | 北京工业大学 | A kind of recovering rare earth Yt method of preparing resin surface composite deposite from waste phosphor powder |
| CN106191446B (en) * | 2016-07-05 | 2018-04-17 | 北京工业大学 | A kind of recovering rare earth yttrium from waste phosphor powder and the method for preparing resin surface composite deposite |
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Application publication date: 20120321 |