CN108866594A - A kind of electroplate liquid and its electro-plating method for uranium foil nickel plating - Google Patents
A kind of electroplate liquid and its electro-plating method for uranium foil nickel plating Download PDFInfo
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- CN108866594A CN108866594A CN201810951085.XA CN201810951085A CN108866594A CN 108866594 A CN108866594 A CN 108866594A CN 201810951085 A CN201810951085 A CN 201810951085A CN 108866594 A CN108866594 A CN 108866594A
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- Prior art keywords
- electroplate liquid
- plating
- nickel
- uranium
- uranium foil
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/06—Wires; Strips; Foils
- C25D7/0614—Strips or foils
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
- C25D3/14—Electroplating: Baths therefor from solutions of nickel or cobalt from baths containing acetylenic or heterocyclic compounds
- C25D3/16—Acetylenic compounds
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Abstract
The invention belongs to electroless plating techniques fields, are related to a kind of electroplate liquid and its electro-plating method for uranium foil nickel plating.The electroplate liquid contains metal cation salt 400-500g/L, conductive salt 3-8g/L, brightener 10-50mg/L, leveling agent 5-20g/L；The pH of the electroplate liquid is 3.5-4.5.Electroplate liquid for the nickel plating of uranium foil of the invention has more ideal performance, can preferably carry out uranium foil nickel plating using electroplate liquid and its electro-plating method of the invention, keep the performance for the coating being prepared more excellent.Electroplate liquid and its electro-plating method of the invention can increase substantially covering power, reduce coating gap, so as to meet slightly enriched uranium foil target part target requirement, provide basis to complete target piece preparation.Meanwhile it is few using electroplate liquid of the invention and its electro-plating method completion plating process generation waste liquid, the pollution to environment can be reduced, environmental protection is conducive to.
Description
Technical field
The invention belongs to electroless plating techniques fields, are related to a kind of electroplate liquid and its electro-plating method for uranium foil nickel plating.
Background technique
Can using slightly enriched uranium target LEU (235U mass percentage content 19.75%) or high-enriched uranium target HEU (235U mass hundred
Divide and be greater than 90.0% than content) production fission molybdenum99Mo, but slightly enriched uranium target LEU uranium core and high-enriched uranium target HEU uranium core are different.
Due to slightly enriched uranium target LEU uranium core using pure metal LEU (235U mass percentage content 19.75%), it is possible to it is rolled into very thin
Uranium foil, and uranium foil is clipped in two concentric circles aluminum barrel interlayers, outer aluminum barrel-uranium foil-interior aluminum barrel is caused closely to be adjacent to.And anti-
Fission fragment damage in order to prevent in heap irradiation process is answered, the slightly enriched uranium surface target LEU is needed to cover one layer of fission reflective barrier layer.
Material of the nickel as fission reflective barrier layer is generally selected, fission is prepared using the method in uranium surface electroless nickel layer
Reflective barrier layer.In order to be conducive to the heat that target piece discharges the generation of uranium foil in irradiation process, it is desirable that uranium foil surface nickel coating and uranium
Foil is tightly combined and thickness is uniform.And according to the requirement of production uranium target, the superiority and inferiority of nickel-plating bath, electroplating time, plating behaviour
Complexity of work etc. has important influence to the quality of uranium foil surface nickel coating.
Therefore, the electroplate liquid for selecting a kind of Optimum formulae is the key that ensure uranium foil coating high quality.Ideal electroplate liquid
Answer metal ions cathodic reduction polarization larger, grain size is small, gap is small, coating that is fine and close, having good adhesion to obtain；
Answer stable and electrically conductive property good；It should make the velocity-stabilization of metal electrodeposition, struck capacity is larger；Answer at low cost, small toxicity.
Summary of the invention
Primary and foremost purpose of the invention is to provide a kind of electroplate liquid for uranium foil nickel plating, can have more ideal property
Can, and it can be preferably used for uranium foil nickel plating, keep the performance for the coating being prepared more excellent.
In order to achieve this, the present invention provides a kind of electroplate liquid for uranium foil nickel plating, institute in the embodiment on basis
The electroplate liquid stated contains metal cation salt 400-500g/L, conductive salt 3-8g/L, brightener 10-50mg/L, leveling agent 5-20g/
L；The pH of the electroplate liquid is 3.5-4.5.
The principle of the present invention is as follows：
The heat that release uranium foil generates is conducted in irradiation process in order to be conducive to target piece, it is desirable that uranium foil surface nickel thickness of coating
Uniformly.Metallic uranium easily aoxidizes in air and can adsorb the impurity such as greasy dirt；And uranium also easily aoxidizes in aqueous solution, makes
The more coarse and coating hole of conventional DC coating crystallization obtained is obvious, to directly influence the quality of nickel coating.Electricity
The covering power of plating solution has very important influence to the quality of coating.
Shown in the calculation formula such as formula (1) of general covering power.The inverse (plating solution conductivity) of the resistivity of electroplate liquid with
The product of the ratio (size of cathodic polarization) of cathodic overvoltage, current density change determines covering power.The conductivity of electroplate liquid
Higher, cathodic polarization is bigger, and covering power is higher.
Covering power=1/ ρ Δ n/ Δ i (1)
In formula, the resistivity of P=electroplate liquid, the variation of Δ i=current density, the variation of Δ n=concentration.
By formula (1) it is found that in order to improve the covering power of uranium foil surface nickel layer, select suitable electro-deposition inhibitor (poly-
Close object) and leveling agent be very important.In addition, covering power also relies on cathode-current density, in operation it must also be noted that
Control current density.
Metal cation salt, that is, main salt in plating solution formula of the invention is for carrying out coating deposition, and concentration is to coating
Degree of roughness, current density and electroplating velocity have an impact.
Conductive salt in plating solution formula of the invention can promote anodic solution.Anion (such as chloride ion) in conductive salt
Concentration is too low to will lead to anodic passivity；Excessive concentration will increase coating internal stress, influence quality of coating.
Brightener in plating solution formula of the invention assigns miniaturization precipitation particles coating bright property and flexibility, simultaneously
Flatten coating.When uranium foil is immersed in electroplate liquid, brightener is equably adsorbed on its surface, with coating in electroplating process
Grow up and coating surface is made to become smaller, electrodeposit reaction can be promoted.
Leveling agent in plating solution formula of the invention can reduce liquid-gas, liquid-solid interface tension, and bubble hydrogen is made to be difficult to stop
Cathode surface is stayed in, to reduce the formation of pin hole.Under the action of leveling agent, on uranium foil surface, the anion of Specific adsorption exists
Monomolecular film is formed under electrostatic interaction, alleviates local current convergence, to have the function that eliminate stress, is plated to improve
Ability.
In a preferred embodiment, the present invention provides a kind of electroplate liquid for uranium foil nickel plating, wherein described
Metal cation salt is selected from one or more of nickel sulfamic acid, methane sulfonic acid nickel, nickel sulfate.
In a preferred embodiment, the present invention provides a kind of electroplate liquid for uranium foil nickel plating, wherein described
Conductive salt is selected from nickel chloride and/or nickelous bromide.
In a preferred embodiment, the present invention provides a kind of electroplate liquid for uranium foil nickel plating, wherein described
Brightener is selected from silica and/or sodium vinyl sulfonate.
In a preferred embodiment, the present invention provides a kind of electroplate liquid for uranium foil nickel plating, wherein described
The average particle size of brightener is 0.01-1 μm.
In a preferred embodiment, the present invention provides a kind of electroplate liquid for uranium foil nickel plating, wherein described
Leveling agent is selected from dodecyl sodium sulfate and/or N, N- diethyl propargylamine sulfate.
A second object of the present invention is to provide a kind of methods for carrying out the nickel plating of uranium foil using aforementioned electroplate liquid, with can be more
Good carry out uranium foil nickel plating, keeps the performance for the coating being prepared more excellent.
In order to achieve this, basis embodiment in, the present invention provide it is a kind of using aforementioned electroplate liquid progress uranium foil
Cathode uranium foil is placed in aforementioned electroplate liquid with anode nickel foil and is electroplated by the method for nickel plating, the method.
In a preferred embodiment, the present invention provides a kind of side that the nickel plating of uranium foil is carried out using aforementioned electroplate liquid
Method, wherein electroplating temperature is 35-50 DEG C.
In a preferred embodiment, the present invention provides a kind of side that the nickel plating of uranium foil is carried out using aforementioned electroplate liquid
Method, wherein electroplating voltage is 10-30V, electroplating current density 10-30A/dm2, electroplating time is 20-40 minutes.
In a preferred embodiment, the present invention provides a kind of side that the nickel plating of uranium foil is carried out using aforementioned electroplate liquid
Method is wherein stirred continuously in electroplating process, to reduce the generation of polymer.
The beneficial effects of the present invention are, the electroplate liquid for the nickel plating of uranium foil of the invention has more ideal performance,
Uranium foil nickel plating can be preferably carried out using electroplate liquid and its electro-plating method of the invention, makes the performance for the coating being prepared more
It is excellent.
Electroplate liquid and its electro-plating method of the invention can increase substantially covering power, reduce coating gap, so as to
Enough meet slightly enriched uranium foil target part target requirement, provides basis to complete target piece preparation.Meanwhile using electroplate liquid of the invention and its
Electro-plating method completion plating process generation waste liquid is few, can reduce the pollution to environment, be conducive to environmental protection.
Detailed description of the invention
Fig. 1 is the Electronic Speculum testing result for the nickel coating that the electroplate liquid of the formula 1 of embodiment 1 is electroplated.
Fig. 2 is the Electronic Speculum testing result for the nickel coating that the electroplate liquid of the formula 2 of embodiment 1 is electroplated.
Specific embodiment
A specific embodiment of the invention is made further instructions with attached drawing with reference to embodiments.
Embodiment 1：The preparation of uranium foil surface nickel coating
Electroplate liquid is prepared after mixing according to the formula of such as the following table 1.
1 plating solution formula of table composition
Note：The average particle size of silica and sodium vinyl sulfonate is 0.1-1 μm.
Cathode uranium foil is drawn with anode nickel foil with copper conductor, is suspended in the electroplate liquid of table 1 being respectively formulated respectively, not
(600rpm) is electroplated under disconnected stirring, and specific plating conditions are as shown in table 2 below.
Table 2 is respectively formulated the plating conditions of electroplate liquid
Embodiment 2：The detection of nickel coating
Thickness of coating is carried out to the nickel coating that the electroplate liquid of each formula number according to embodiment 1 is electroplated and (uses X-ray
Calibrator is detected) it is examined with plating layer porosity (according to patch filter paper method detection as defined in GB 5935), as a result such as the following table 3 institute
Show.In addition, the Electronic Speculum testing result difference for the nickel coating that the electroplate liquid of formula 1,2 is electroplated is as shown in Figure 1, 2.
The testing result of 3 nickel coating of table
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.If in this way, belonging to the model of the claims in the present invention and its equivalent technology to these modifications and changes of the present invention
Within enclosing, then the present invention is also intended to include these modifications and variations.Above-described embodiment or embodiment are only to the present invention
For example, the present invention can also be implemented with other ad hoc fashions or other particular form, without departing from of the invention
Main idea or substantive characteristics.Therefore, the embodiment of description is regarded as illustrative and non-limiting in any way.This
The range of invention should be illustrated that any variation equivalent with the intention and range of claim also should include by appended claims
Within the scope of the invention.
Claims (10)
1. a kind of electroplate liquid for uranium foil nickel plating, it is characterised in that：The electroplate liquid contains metal cation salt 400-500g/
L, conductive salt 3-8g/L, brightener 10-50mg/L, leveling agent 5-20g/L；The pH of the electroplate liquid is 3.5-4.5.
2. electroplate liquid according to claim 1, it is characterised in that：The metal cation salt is selected from nickel sulfamic acid, first
One or more of base nickel sulphonic acid, nickel sulfate.
3. electroplate liquid according to claim 1, it is characterised in that：The conductive salt is selected from nickel chloride and/or nickelous bromide.
4. electroplate liquid according to claim 1, it is characterised in that：The brightener is selected from silica and/or ethylene
Base sodium sulfonate.
5. electroplate liquid according to claim 1, it is characterised in that：The average particle size of the brightener is 0.01-1 μm.
6. electroplate liquid according to claim 1, it is characterised in that：The leveling agent be selected from dodecyl sodium sulfate and/
Or N, N- diethyl propargylamine sulfate.
7. a kind of method of uranium foil nickel plating, it is characterised in that：Cathode uranium foil is placed in right with anode nickel foil and wanted by the method
It asks and is electroplated in electroplate liquid described in any one of 1-6.
8. according to the method described in claim 7, it is characterized in that：Electroplating temperature is 35-50 DEG C.
9. according to the method described in claim 7, it is characterized in that：Electroplating voltage is 10-30V, electroplating current density 10-
30A/dm2, electroplating time is 20-40 minutes.
10. according to the method described in claim 7, it is characterized in that：It is stirred continuously in electroplating process, to reduce the production of polymer
It is raw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810951085.XA CN108866594B (en) | 2018-08-20 | 2018-08-20 | Electroplating solution for uranium foil nickel plating and electroplating method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810951085.XA CN108866594B (en) | 2018-08-20 | 2018-08-20 | Electroplating solution for uranium foil nickel plating and electroplating method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN108866594A true CN108866594A (en) | 2018-11-23 |
| CN108866594B CN108866594B (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810951085.XA Active CN108866594B (en) | 2018-08-20 | 2018-08-20 | Electroplating solution for uranium foil nickel plating and electroplating method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3726768A (en) * | 1971-04-23 | 1973-04-10 | Atomic Energy Commission | Nickel plating baths containing aromatic sulfonic acids |
| CN102041528A (en) * | 2009-10-13 | 2011-05-04 | 北京中科三环高技术股份有限公司 | Additive for bright nickel plating technology for permanent magnetic material |
| CN106400059A (en) * | 2016-09-26 | 2017-02-15 | 河南理工大学 | Electrolyte additive used for electroforming high hardness and low stress nickel workpiece |
-
2018
- 2018-08-20 CN CN201810951085.XA patent/CN108866594B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3726768A (en) * | 1971-04-23 | 1973-04-10 | Atomic Energy Commission | Nickel plating baths containing aromatic sulfonic acids |
| CN102041528A (en) * | 2009-10-13 | 2011-05-04 | 北京中科三环高技术股份有限公司 | Additive for bright nickel plating technology for permanent magnetic material |
| CN106400059A (en) * | 2016-09-26 | 2017-02-15 | 河南理工大学 | Electrolyte additive used for electroforming high hardness and low stress nickel workpiece |
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| CN108866594B (en) | 2020-07-28 |
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