CN104562107A - Highly-corrosion-resistant environment-friendly black tin-cobalt alloy electroplating liquid and electroplating method thereof. - Google Patents
Highly-corrosion-resistant environment-friendly black tin-cobalt alloy electroplating liquid and electroplating method thereof. Download PDFInfo
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- CN104562107A CN104562107A CN201410823229.5A CN201410823229A CN104562107A CN 104562107 A CN104562107 A CN 104562107A CN 201410823229 A CN201410823229 A CN 201410823229A CN 104562107 A CN104562107 A CN 104562107A
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- cobalt alloy
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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
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
Abstract
The invention relates to a highly-corrosion-resistant environment-friendly black tin-cobalt alloy electroplating liquid and an electroplating method thereof. The highly-corrosion-resistant environment-friendly black tin-cobalt alloy electroplating liquid comprises the components of main salt, a complexing agent, a stabilizing agent, a wetting agent, conducting salt and water. The electroplating method comprising the following steps: (1) performing acid pickling and washing with water on workpieces; (2) electroplating the washed workpieces with the highly-corrosion-resistant environment-friendly black tin-cobalt alloy electroplating liquid prepared from the components, wherein the workpieces are electroplated under the following conditions: the temperature is 40-60 DEG C, the cathode current density is 0.5-1.5 ASD, the pH value is 8-10, the electroplating time is 2-5 minutes, and an anode used during electroplating is a carbon plate; (3) cleaning up the electroplated workpieces with water, and blow-drying the washed workpieces. The electroplating liquid disclosed by the invention is clean and has no pollution, and also has the advantages that the appearance of plated layers is uniform and bright, the corrosion resistance is high, nickel preplating layers are not needed, the consumption of nickel is reduced, high safety and environmental protection are achieved, the bonding force between plated layers and substrates is good, and the overall wear resistance of the workpieces can be improved; the electroplating method is simple, so that the popularization and the application of the functional electroplating process of black tin-cobalt alloy become possible.
Description
Technical field
The present invention relates to a kind of electroplating technology, specifically, relate to a kind of high anti-corrosion environmental protection black tin-cobalt alloy electroplate liquid and electro-plating method thereof.
Background technology
Tin-cobalt alloy has excellent ornamental and functional.Corrosion-resistance black tin-cobalt alloy is widely used in machinery part surface owing to having higher hardness, preferably bonding force and more low molecular frictional coefficient, can well improve wear resistance and the corrosion resisting property of workpiece itself.
Traditional black tin-cobalt alloy plating solution system mainly contains fluoride system, Organophosphonate class system and pyrophosphate salt system etc.Fluorochemical plating solution is poisonous, has difficulties in maintenance of the equipment and liquid waste disposal etc., and the alloy layer obtained in Organophosphonate class plating solution easily crackle occurs, and pyrophosphate salt system plating solution is nontoxic corrosion-free, and its total metal concentration is low, and wastewater treatment is simple.
So we need one not only environmental protection but also corrosion resistant black tin-cobalt alloy electroplating technology.
Summary of the invention
For the problems referred to above, first object of the present invention, be to provide a kind of high anti-corrosion environmental protection black tin-cobalt alloy electroplate liquid, this electroplate liquid is environment friendly and pollution-free in electroplating process, the coating obtained has high anti-corrosion, and zinc-plated cobalt layers and base material also have good bonding force.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of high anti-corrosion environmental protection black tin-cobalt alloy electroplate liquid, comprise main salt, complexing agent, stablizer, wetting agent, conducting salt and water, described main salt is the mixture of stannous sulfate and rose vitriol; Described complexing agent is at least one in citric acid, tartrate; Described stablizer is at least one in nicotinic acid, glycine; Described wetting agent is at least one in polyoxyethylene glycol, polyoxyethylene octylphenol ether; Described conducting salt is at least one in potassium pyrophosphate, trisodium phosphate, ammonium pyrophosphate.
Further, described main salts contg is 50g/L ~ 100g/L; Described complexing agent content is 1g/L ~ 30g/L; Described stabiliser content is 5g/L ~ 10g/L; Described wetting agent content is 0.05g/L ~ 2g/L; Described conducting salt content is 100g/L ~ 180g/L.
Second object of the present invention is, provide a kind of high anti-corrosion environmental protection black tin-cobalt alloy electro-plating method, the method sedimentation velocity tool in electroplating process has significant improvement.
This electro-plating method comprises the following steps:
(1) workpiece pickling and washing;
(2) electroplate with the height of said ratio anti-corrosion environmental protection black tin-cobalt alloy plating solution, the condition of plating is: temperature 40-60 DEG C, cathode current density 0.5-1.5ASD, pH value 8-10, plating 2-5 minute, and the anode used in electroplating process is carbon plate;
(3) with water, plating piece is cleaned up after plating, then dry up.
Further, ammoniacal liquor is used to regulate bath pH value.
Described bath pH value is 8.9.
Compared with prior art, the invention has the beneficial effects as follows:
One plating environmental protection high corrosion resistant black tin-cobalt alloy electroplate liquid of the present invention and electro-plating method thereof, cleanliness without any pollution, Deposit appearance is evenly bright, solidity to corrosion is high, and it does not need pre-plating layer nickel, decreases the consumption of nickel, safety and environmental protection, and bonding force between coating and base material is good, the overall wear resistance of workpiece can be promoted, and electro-plating method simply makes the promotion and application of black tin-cobalt alloy functional electroplating process become possibility.
Embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Embodiment 1 of the present invention
Electroplating bath components:
Electro-plating method:
(1) plating solution is put into the glass coating bath of 1 liter, controlling nickel plating temperature with constant water bath box is 50 DEG C, uses ammoniacal liquor to regulate bath pH value to be 8.9.
(2) by processed copper sheet (50mm × 30mm × 1.2mm), be immersed in plating solution, cathode current density 1ASD, plating 3 minutes, anode adopts carbon plate.
(3) clean with water after plating, then dry up.
Electroplating effect is evaluated: observe black tin-cobalt alloy coating even, fine and close, bright, measure thickness 1.5 microns, through salt-fog test after 48 hours, corrosion of coating rate is 0%.
Embodiment 2
Electroplating bath components:
Electro-plating method:
(1) plating solution is put into the glass coating bath of 1 liter, controlling nickel plating temperature with constant water bath box is 50 DEG C, uses ammoniacal liquor to regulate bath pH value to be 8.9.
(2) by processed copper sheet (50mm × 30mm × 1.2mm), be immersed in plating solution, cathode current density 1ASD, plating 3 minutes, anode adopts carbon plate.With water cleaning after plating, then dry up.
(3) electroplating effect evaluation: observe black tin-cobalt alloy coating even, fine and close, bright, measure thickness 1.5 microns, through salt-fog test after 48 hours, corrosion of coating rate is 0%.
Embodiment 3
Electroplating bath components:
Electro-plating method:
(1) plating solution is put into the glass coating bath of 1 liter, controlling nickel plating temperature with constant water bath box is 50 DEG C, uses ammoniacal liquor to regulate bath pH value to be 8.9.
(2) by processed copper sheet (50mm × 30mm × 1.2mm), be immersed in plating solution, cathode current density 1ASD, plating 3 minutes, anode adopts carbon plate.
(3) clean with water after plating, then dry up.
Electroplating effect is evaluated: observe black tin-cobalt alloy coating even, fine and close, bright, measure thickness 1.5 microns, through salt-fog test after 48 hours, corrosion of coating rate is 0%.
Embodiment 4
Electroplating bath components:
Electro-plating method:
(1) plating solution is put into the glass coating bath of 1 liter, controlling nickel plating temperature with constant water bath box is 50 DEG C, uses ammoniacal liquor to regulate bath pH value to be 8.9.
(2) by processed copper sheet (50mm × 30mm × 1.2mm), be immersed in plating solution, cathode current density 1ASD, plating 3 minutes, anode adopts carbon plate.
(3) clean with water after plating, then dry up.
Electroplating effect is evaluated: observe black tin-cobalt alloy coating even, fine and close, bright, measure thickness 1.5 microns, through salt-fog test after 48 hours, corrosion of coating rate is 0%.
Embodiment 5
Electroplating bath components:
Electro-plating method:
(1) plating solution is put into the glass coating bath of 1 liter, controlling nickel plating temperature with constant water bath box is 50 DEG C, uses ammoniacal liquor to regulate bath pH value to be 8.9.
(2) by processed copper sheet (50mm × 30mm × 1.2mm), be immersed in plating solution, cathode current density 1ASD, plating 3 minutes, anode adopts carbon plate.
(3) clean with water after plating, then dry up.
Electroplating effect is evaluated: observe black tin-cobalt alloy coating even, fine and close, bright, measure thickness 1.5 microns, through salt-fog test after 48 hours, corrosion of coating rate is 0%.
From the above results, embodiment thickness of coating is 1.5 microns, and salt-fog test is after 48 hours, and corrosion rate is 0%.In sum, the high anti-corrosion environmental protection black tin-cobalt alloy electroplate liquid of one provided by the invention and electro-plating method thereof, have the advantage that erosion resistance is strong.
Last it is noted that these are only the preferred embodiments of the present invention; be not limited to the present invention; although with reference to embodiment to invention has been detailed description; for a person skilled in the art; it still can be modified to the technical scheme described in foregoing embodiments; or equivalent replacement is carried out to wherein portion of techniques feature; but it is within the spirit and principles in the present invention all; any amendment of doing, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a high anti-corrosion environmental protection black tin-cobalt alloy electroplate liquid, it is characterized in that, comprise main salt, complexing agent, stablizer, wetting agent, conducting salt and water, described main salt is the mixture of stannous sulfate and rose vitriol; Described complexing agent is at least one in citric acid, tartrate; Described stablizer is at least one in nicotinic acid, glycine; Described wetting agent is at least one in polyoxyethylene glycol, polyoxyethylene octylphenol ether; Described conducting salt is at least one in potassium pyrophosphate, trisodium phosphate, ammonium pyrophosphate.
2. a kind of high anti-corrosion environmental protection black tin-cobalt alloy electroplate liquid according to claim 1, it is characterized in that, described main salts contg is 50g/L ~ 100g/L; Described complexing agent content is 1g/L ~ 30g/L; Described stabiliser content is 5g/L ~ 10g/L; Described wetting agent content is 0.05g/L ~ 2g/L; Described conducting salt content is 100g/L ~ 180g/L.
3. the electro-plating method of a kind of high anti-corrosion environmental protection black tin-cobalt alloy electroplate liquid according to claim 1, it is characterized in that, it comprises the following steps:
(1) workpiece pickling and washing;
(2) electroplate with the height of said ratio anti-corrosion environmental protection black tin-cobalt alloy plating solution, the condition of plating is: temperature 40-60 DEG C, cathode current density 0.5-1.5ASD, pH value 8-10, plating 2-5 minute, and the anode used in electroplating process is carbon plate;
(3) with water, plating piece is cleaned up after plating, then dry up.
4. the electro-plating method of a kind of high anti-corrosion environmental protection black tin-cobalt alloy electroplate liquid according to claim 3, is characterized in that, uses ammoniacal liquor to regulate bath pH value.
5. the electro-plating method of a kind of high anti-corrosion environmental protection black tin-cobalt alloy electroplate liquid according to claim 3, it is characterized in that, described bath pH value is 8.9.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105239116A (en) * | 2015-10-28 | 2016-01-13 | 安徽恒源煤电股份有限公司 | Corrosion resistant composite electroplating liquid |
| CN105256340A (en) * | 2015-10-10 | 2016-01-20 | 安徽长青电子机械（集团）有限公司 | Oil-proof and waterproof composite electroplating bath and preparation method thereof |
| CN105256362A (en) * | 2015-10-10 | 2016-01-20 | 安徽长青电子机械（集团）有限公司 | Composite electroplating bath low in economic cost and high in binding force |
| CN105256345A (en) * | 2015-10-10 | 2016-01-20 | 安徽长青电子机械（集团）有限公司 | Rustproof composite electroplating bath |
| CN105256341A (en) * | 2015-10-28 | 2016-01-20 | 安徽恒源煤电股份有限公司 | Electroplate liquid usable for scaffolds made of multiple materials |
| CN105543914A (en) * | 2015-12-23 | 2016-05-04 | 苏州市金星工艺镀饰有限公司 | Electroplating method for decorative copper zinc alloy electroplating solution |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256340A (en) * | 2015-10-10 | 2016-01-20 | 安徽长青电子机械（集团）有限公司 | Oil-proof and waterproof composite electroplating bath and preparation method thereof |
| CN105256362A (en) * | 2015-10-10 | 2016-01-20 | 安徽长青电子机械（集团）有限公司 | Composite electroplating bath low in economic cost and high in binding force |
| CN105256345A (en) * | 2015-10-10 | 2016-01-20 | 安徽长青电子机械（集团）有限公司 | Rustproof composite electroplating bath |
| CN105239116A (en) * | 2015-10-28 | 2016-01-13 | 安徽恒源煤电股份有限公司 | Corrosion resistant composite electroplating liquid |
| CN105256341A (en) * | 2015-10-28 | 2016-01-20 | 安徽恒源煤电股份有限公司 | Electroplate liquid usable for scaffolds made of multiple materials |
| CN105543914A (en) * | 2015-12-23 | 2016-05-04 | 苏州市金星工艺镀饰有限公司 | Electroplating method for decorative copper zinc alloy electroplating solution |
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Application publication date: 20150429 |