CN1058053A - The method of electroplating bright nickel on Nd-Fe-B alloy - Google Patents
The method of electroplating bright nickel on Nd-Fe-B alloy Download PDFInfo
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- CN1058053A CN1058053A CN 91106133 CN91106133A CN1058053A CN 1058053 A CN1058053 A CN 1058053A CN 91106133 CN91106133 CN 91106133 CN 91106133 A CN91106133 A CN 91106133A CN 1058053 A CN1058053 A CN 1058053A
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Abstract
A kind of method that is used for the Nd-Fe-B alloys electronickelling, earlier matrix is carried out pre-treating technologies such as oil removing, rust cleaning, cathode treatment, acidleach, putting into the electroplate liquid formulation of being made up of single nickel salt, nickelous chloride, boric acid, additive etc. then electroplates, can obtain good coating, the bonding strength height of its coating, luminance brightness is good.Reach international iso standard.Present method is simple for process, and the plating bath cost is low, and working current density is big, and it is fast to play light, the production efficiency height.Enlarge the use range of Nd-Fe-B alloys, improved its work-ing life.
Description
The invention belongs to a kind of electroplating technology, particularly Nd-Fe-B alloys is carried out the method for electroplating bright nickel.
Electroplating bright nickel technology has been behaved known.Be two types at present, a kind of is chemical nickel plating, and another kind of is electronickelling.These two kinds of nickel plating methods are all carried out on iron or copper matrix.The method of electronickelling is, earlier to matrix surface eliminate rust, membrane removal, and then deposition one deck middle layer (being generally copper plate during the iron-based body), and then the electrolytic solution of putting into nickel plating is electroplated.The nickel plating on the matrix of iron or copper of this method can obtain comparatively ideal coating.But can not be used for the nickel plating on the Nd-Fe-B alloys matrix.Because of Nd-Fe-B alloys is domestic in recent years, the alloy material of development newly developed in the world, it mainly is to be used as high-strength permanent-magnet alloy.Contain the very negative neodymium metal of a kind of current potential in the alloy,, also can regenerate rapidly, so it is seriously influencing coating and high base strength even under air and other well-oxygenated environment, remove its oxide film.Method for electroplating nickel routinely is to obtain ideal coating thus.And the electroplate liquid formulation complexity of this method.Relate to that drug variety is many, the preparation time is long, cost height, complex process.
The purpose of this invention is to provide a kind of simple method, make its coating have the effect that bonding force is strong, luminance brightness good, erosion resistance is strong electroplating bright nickel on Nd-Fe-B alloy.
The present invention adopts following technological method to realize.At first the Nd-Fe-B alloys matrix being carried out surface degreasing with degreaser handles, after washing, activate in the immersion HCl aqueous hydrochloric acid, after washing, put into basic solution again and carry out cathode treatment, after washing, be reentered into again and carry out weak corrosion treatment in the HCl aqueous hydrochloric acid.Can put into plating bath (electrolytic solution) plating for preparing after taking out washing, its plating time requires to decide according to thickness of coating, and concrete electroplate liquid formulation is (pressing concentration ratio):
Single nickel salt (NiSO
46H
2O) 280～320g/l
Nickelous chloride (NiCl
26H
2O) 35～40g/l
Boric acid (H
3BO
3) 35～40g/l
Additive 1
#0.2～1ml/l
This additive is the " additive 1 of U.S. Atotech company production and sales
#".In case of necessity, require also can add a spot of 0.01～0.03g/l sodium lauryl sulphate according to coating as tensio-active agent.Surface quality with further raising coating.
Whole process flow is:
Oil removing → washing → activated acids processing → washing → alkaline cathode treatment → washing → acid treatment → washing → plating → washing → oven dry → inspection.
When being undertaken, select the working conditions of conventional electronickelling: P again by above-mentioned electroplate liquid formulation and technical process
H=3.8～4.8; Cathode current density Dk=3～10A/dm
2; Cloudy s: positive s=1～1.5: 2; Temperature T=40～50 ℃ can realize Nd-Fe-B alloys nickel plating is obtained ideal coating.
The invention has the advantages that: owing in the pre-treatment process, select the HCl aqueous hydrochloric acid that the neodymium iron boron matrix surface is carried out activation treatment and carries out the method for cathode treatment with basic solution, thus fully guaranteed the bonding strength between nickel layer and matrix.Making it mortise is integral.Simultaneously, the electroplate liquid formulation of present method is simple, easily row, cost are low.And working current density is big, and coating deposition rate is accelerated, and it is fast to play light, can finish in general 5～8 minutes.Thereby production efficiency greatly improves.Its solidity to corrosion of coating that present method obtains is good, bonding force is strong, and every technical indicator has all reached international iso standard.Thereby enlarge the use range of Nd-Fe-B alloys.Improve its work-ing life.
The present invention will be further described below in conjunction with embodiment.
Embodiment 1
Under room temperature state 3% metal degreasing agent (domestic commercially available) oil removal treatment with the neodymium iron boron test specimen of φ 15 * 30mm with concentration, use warm water washing then, use cold water flush again, be 5～20% HCl hydrochloric acid (technical grade) aqueous solution soaking 1～2 minute then with concentration, make surface active, after the washing, put into basic solution and carry out cathode treatment again, this basic solution can be used: NaOH 40～80g/l and complexing agent 5～15g/l are formulated, and soak time is 0.5～1 minute.Take out and to put into 5～20% HCl hydrochloric acid soln after the washing again and carry out weak corrosion treatment 3～5 seconds.Following plating bath (pressing concentration ratio) is put in taking-up after washing:
Single nickel salt (NiSO
46H
2O) 290 gram/l
Nickelous chloride (NiCl
26H
2O) 35 gram/l
Boric acid (H
3BO
3) 35 gram/l
Additive 1
#(U.S.'s product) 0.5ml/l
This additive 1
#Be the production and sales of U.S. Atotech company, all there is sale the domestic market.Adjust P in the plating bath
HValue is 4.2, and temperature is 37 ℃, and current density is 4.5A/dm
2, take the mobile alr mode of negative electrode (test specimen), the plating time is 8 minutes, and it is smooth that can obtain the coating light this moment, and bonding force is strong, corrosion resistant nickel layer.
Embodiment 2:
With a volume is 20 * 15 * 5mm
3After block neodymium iron boron test specimen is finished by the pretreatment procedure of embodiment 1, put into following plating bath:
Single nickel salt (NiSO
46H
2O) 300g/l
Nickelous chloride (NiCl
26H
2O) 37.5g/l
Boric acid (H
3BO
3) 37.5g/l
Additive 1
#0.6ml/l
With P
HValue adjusts to 4.3, and temperature is 36 ℃, current density 4.2A/dm
2, test specimen put into electroplate liquid under whipped state after 10 minutes, take out through washing, oven dry, just obtain good coating.
Embodiment 3:
The pretreatment procedure method is put into following plating bath with embodiment 1,2 with test specimen:
Single nickel salt (NiSO
46H
2O) 320g/l
Nickelous chloride (NiCl
26H
2O) 40g/l
Boric acid (H
3BO
3) 40g/l
Additive 1
#1ml/l
Adjust plating bath P
HValue is that temperature is 38 ℃, current density 7A/dm
2, test specimen is put into plating bath and was taken out after 10 minutes under whipped state, and washing, oven dry just obtain bright nickel dam, reach every index of international iso standard regulation.
Claims (5)
1, a kind of method that is used for the Nd-Fe-B alloys electronickelling, it is characterized in that: the Nd-Fe-B alloys matrix is carried out surface degreasing with degreaser, after washing, immerse in the HCL aqueous hydrochloric acid, after washing, put into basic solution again, after washing, be reentered in the HCL aqueous hydrochloric acid again, put into following electroplate liquid formulation after the washing again and electroplate (pressing concentration ratio):
Single nickel salt (NiSO
46H
2O), 280～320g/l
Nickelous chloride (NiCl
26H
2O), 35～40g/l
Boric acid (H
3BO
3), 35～40g/l
Additive 1
#, 0.2～1ml/l
2, according to the described method for electroplating nickel of claim 1, it is characterized in that: additive 1# is the special product of U.S. Atotech company production and sales, and degreaser is domestic commercially available metal degreasing agent, and its concentration is 3%.
3, according to the described method for electroplating nickel of claim 2, it is characterized in that: the concentration of HCl aqueous hydrochloric acid is 5～20%, and the basic solution of cathode treatment is that NaOH 40～80g/l and complexing agent 5～15g/l are formulated.
4, according to the described method for electroplating nickel of claim 1, it is characterized in that: also can add a spot of sodium lauryl sulphate in the electroplate liquid formulation and (be generally 0.01～0.03g/l).
5, according to the described method for electroplating nickel of claim 4, it is characterized in that: cathode current density Dk=3～10A/dm
2, cloudy s: positive s=1～1.5: 2, temperature T=35～50 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91106133 CN1058053A (en) | 1991-06-01 | 1991-06-01 | The method of electroplating bright nickel on Nd-Fe-B alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91106133 CN1058053A (en) | 1991-06-01 | 1991-06-01 | The method of electroplating bright nickel on Nd-Fe-B alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1058053A true CN1058053A (en) | 1992-01-22 |
Family
ID=4907570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91106133 Pending CN1058053A (en) | 1991-06-01 | 1991-06-01 | The method of electroplating bright nickel on Nd-Fe-B alloy |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1078751C (en) * | 1995-06-19 | 2002-01-30 | 住友电气工业株式会社 | Electrode base sheet for cell and its preparing method |
| CN100414003C (en) * | 2004-04-21 | 2008-08-27 | 浙江工业大学 | Method for preparing neodymium-iron-boron magnetic powder coated with metal layer by electrochemical deposition |
| CN102115899A (en) * | 2010-01-05 | 2011-07-06 | 北京中科三环高技术股份有限公司 | Tin-nickel alloy plating solution used for plating neodymium iron boron permanent magnet material and method for plating neodymium iron boron permanent magnet material by adopting same |
| CN101724830B (en) * | 2008-10-16 | 2012-02-29 | 北京中科三环高技术股份有限公司 | Nickel plating bath for permanent magnet material and permanent magnet material surface treatment method thereof |
| CN102392279A (en) * | 2011-10-31 | 2012-03-28 | 成都旭光电子股份有限公司 | Nickel electroplating method of ceramic metalized layer |
| CN102560574A (en) * | 2010-12-21 | 2012-07-11 | 北京中科三环高技术股份有限公司 | Nickel-iron alloy plating solution of neodymium-iron-boron permanent magnet material and method for preparing plated nickel-iron alloy |
| CN102586829A (en) * | 2012-02-22 | 2012-07-18 | 沈阳中北通磁科技股份有限公司 | Process method for reducing magnetic loss of neodymium-iron-boron permanent magnet under high-temperature and high-humidity conditions |
| CN102839400A (en) * | 2012-09-28 | 2012-12-26 | 金鹏源康(广州)精密电路有限公司 | Electro-plated nickel solution without additive and electro-plating method thereof |
| CN110233038A (en) * | 2018-03-05 | 2019-09-13 | 宁波招宝磁业有限公司 | A kind of cold treatment processing method of neodymium iron boron magnetic body |
| WO2019227664A1 (en) * | 2018-05-28 | 2019-12-05 | 江苏大学 | Laser shock processing method for improving corrosion resistance property of sintered nd-fe-b magnet |
| CN111876798A (en) * | 2020-08-18 | 2020-11-03 | 浙江英洛华磁业有限公司 | High-corrosion-resistance bright electroplating nickel plating solution and preparation method and use method thereof |
| CN111996566A (en) * | 2020-07-23 | 2020-11-27 | 北方夜视技术股份有限公司 | Dynode processing method for improving gain of side window dynode type photomultiplier and dynode |
-
1991
- 1991-06-01 CN CN 91106133 patent/CN1058053A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1078751C (en) * | 1995-06-19 | 2002-01-30 | 住友电气工业株式会社 | Electrode base sheet for cell and its preparing method |
| CN100414003C (en) * | 2004-04-21 | 2008-08-27 | 浙江工业大学 | Method for preparing neodymium-iron-boron magnetic powder coated with metal layer by electrochemical deposition |
| CN101724830B (en) * | 2008-10-16 | 2012-02-29 | 北京中科三环高技术股份有限公司 | Nickel plating bath for permanent magnet material and permanent magnet material surface treatment method thereof |
| CN102115899A (en) * | 2010-01-05 | 2011-07-06 | 北京中科三环高技术股份有限公司 | Tin-nickel alloy plating solution used for plating neodymium iron boron permanent magnet material and method for plating neodymium iron boron permanent magnet material by adopting same |
| CN102115899B (en) * | 2010-01-05 | 2015-06-03 | 北京中科三环高技术股份有限公司 | Tin-nickel alloy plating solution used for plating neodymium iron boron permanent magnet material and method for plating neodymium iron boron permanent magnet material by adopting same |
| CN102560574A (en) * | 2010-12-21 | 2012-07-11 | 北京中科三环高技术股份有限公司 | Nickel-iron alloy plating solution of neodymium-iron-boron permanent magnet material and method for preparing plated nickel-iron alloy |
| CN102392279B (en) * | 2011-10-31 | 2013-10-23 | 成都旭光电子股份有限公司 | Nickel electroplating method of ceramic metalized layer |
| CN102392279A (en) * | 2011-10-31 | 2012-03-28 | 成都旭光电子股份有限公司 | Nickel electroplating method of ceramic metalized layer |
| CN102586829A (en) * | 2012-02-22 | 2012-07-18 | 沈阳中北通磁科技股份有限公司 | Process method for reducing magnetic loss of neodymium-iron-boron permanent magnet under high-temperature and high-humidity conditions |
| CN102586829B (en) * | 2012-02-22 | 2015-04-22 | 沈阳中北通磁科技股份有限公司 | Process method for reducing magnetic loss of neodymium-iron-boron permanent magnet under high-temperature and high-humidity conditions |
| CN102839400A (en) * | 2012-09-28 | 2012-12-26 | 金鹏源康(广州)精密电路有限公司 | Electro-plated nickel solution without additive and electro-plating method thereof |
| CN102839400B (en) * | 2012-09-28 | 2013-11-13 | 广州金鹏源康精密电路股份有限公司 | Electro-plated nickel solution without additive and electro-plating method thereof |
| CN110233038A (en) * | 2018-03-05 | 2019-09-13 | 宁波招宝磁业有限公司 | A kind of cold treatment processing method of neodymium iron boron magnetic body |
| WO2019227664A1 (en) * | 2018-05-28 | 2019-12-05 | 江苏大学 | Laser shock processing method for improving corrosion resistance property of sintered nd-fe-b magnet |
| US11342099B2 (en) | 2018-05-28 | 2022-05-24 | Jiangsu University | Laser shock peening method for improving the corrosion resistance of sintered Nd—Fe—B magnet |
| CN111996566A (en) * | 2020-07-23 | 2020-11-27 | 北方夜视技术股份有限公司 | Dynode processing method for improving gain of side window dynode type photomultiplier and dynode |
| CN111996566B (en) * | 2020-07-23 | 2021-06-29 | 北方夜视技术股份有限公司 | Dynode processing method for improving gain of side window dynode type photomultiplier and dynode |
| CN111876798A (en) * | 2020-08-18 | 2020-11-03 | 浙江英洛华磁业有限公司 | High-corrosion-resistance bright electroplating nickel plating solution and preparation method and use method thereof |
| CN111876798B (en) * | 2020-08-18 | 2021-08-03 | 浙江英洛华磁业有限公司 | High-corrosion-resistance bright electroplating nickel plating solution and preparation method and use method thereof |
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