CN103572360A - Electrolytic stripping solution and method for stripping by applying same - Google Patents
Electrolytic stripping solution and method for stripping by applying same Download PDFInfo
- Publication number
- CN103572360A CN103572360A CN201210273318.8A CN201210273318A CN103572360A CN 103572360 A CN103572360 A CN 103572360A CN 201210273318 A CN201210273318 A CN 201210273318A CN 103572360 A CN103572360 A CN 103572360A
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- China
- Prior art keywords
- stripping solution
- electrolytic stripping
- acid
- strip
- electrolytic
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F5/00—Electrolytic stripping of metallic layers or coatings
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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)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- ing And Chemical Polishing (AREA)
Abstract
The invention provides an electrolytic stripping solution which is used for stripping a metal carbide layer, a metal nitride layer or a metal carbonitride layer. The electrolytic stripping solution contains an acid, a corrosion inhibitor and a complexing agent, wherein the acid is a combination of sulfuric acid and weak acid; the corrosion inhibitor is an organic compound containing nitrogen, sulfur or hydroxyl and simultaneously has a hydrophilic group and a lipophilic group; the complexing agent is a Fe<3+> complexing agent. The invention further provides a method for stripping by applying the electrolytic stripping solution.
Description
Technical field
The present invention relates to a kind of electrolytic stripping solution and apply the method that this electrolytic stripping solution carries out strip.
Background technology
Stainless steel coating process has a wide range of applications at industrial circle with the good outward appearance of its coatings and erosion resistance.As metal lining carbide lamella, metal nitride layer or metal carbonitride layer on stainless steel substrate, to improve outward appearance and the use properties (as hardness, wear resistance and erosion resistance etc.) of stainless steel substrate.
Conventionally in following situation, need again coatings to carry out strip: in process of production due to accidentalia, the rete plating does not meet quality requirements, for reducing the loss, cost-saving, need to strip described rete, and workpiece is carried out to plated film again; Or in order to make workpiece surface present needed pattern, word, trade mark etc., the coatings on workpiece is carried out to part stripping.
In prior art, the method for strip titanium-containing film has chemical strip method and electrolytic deplating process method.Wherein the stripping time of chemical strip method long, stripping weak effect, and easily injures base material, and conventionally can produce a large amount of waste water.And existing electrolytic deplating process method strip weak effect is difficult to titanium-containing film to strip completely.
Summary of the invention
Given this, the invention provides a kind of electrolytic stripping solution that can effectively strip metal carbide layer, metal nitride layer or metal carbonitride layer.
In addition, also provide this electrolytic stripping solution of a kind of application to carry out the method for strip.
, it,, in order to strip metal carbide layer, metal nitride layer or metal carbonitride layer, contains acid, inhibiter and complexing agent in this electrolytic stripping solution, and described acid is the combination of a kind of sulfuric acid and weak acid; Described inhibiter is nitrogenous, sulfur-bearing or organic compound hydroxyl and that simultaneously have hydrophilic group and oleophilic group; This complexing agent is Fe
3+complexing agent.
The described electrolytic stripping solution of application carries out the method for strip, and it comprises the steps:
What provide that a surface is formed with metal carbide layer, metal nitride layer or metal carbonitride layer treats strip workpiece;
Will described in treat that strip workpiece is dipped in this electrolytic stripping solution, and using that this treats that strip workpiece is as anode, electrolysis is carried out in energising.
The electrolytic stripping solution that application is described, in the mode of electrolysis, metal carbide layer, metal nitride layer or the metal carbonitride layer on strip stainless steel or other ferrous alloy surfaces completely, strip speed is fast, and efficiency is high; And due to the existence of inhibiter, can effectively avoid treating the infringement of strip workpiece when electrolysis.
Embodiment
Preferred embodiment of the present invention provides a kind of electrolytic stripping solution, and this electrolytic stripping solution can be used for stripping metal carbide layer, metal nitride layer or metal carbonitride layer.In this electrolytic stripping solution, contain acid, inhibiter, complexing agent and promotor.This electrolytic stripping solution is the aqueous solution.
Described acid is the combination of a kind of sulfuric acid and weak acid.Described acid exists as ionogen.Preferably, this acid is the combination of a kind of and sulfuric acid in oxalic acid or acetic acid.In described electrolytic stripping solution, the quality percentage composition of oxalic acid or acetic acid is 3-5%, and the quality percentage composition of sulfuric acid is 1-3%.
Described inhibiter is nitrogenous, sulfur-bearing or organic compound hydroxyl and that simultaneously have hydrophilic group and oleophilic group, in order to protect stainless steel-based surface not corroded in strip process.This inhibiter can be niacinamide (C
6h
6n
2o), imidazolidinyl urea (C
11h
16n
8o
8) and thiocarbamide ((H
4n)
2s) at least one in.Niacinamide) and imidazolidinyl urea preferably, this inhibiter comprises that niacinamide (has another name called:.The concentration of this niacinamide in electrolytic stripping solution can be 0.1-0.3g/l, and the concentration of imidazolidinyl urea in electrolytic stripping solution can be 0.1-0.3g/l.
Niacinamide and imidazolidinyl urea, as organic inhibitor, on the one hand, can reduce the surface energy of stainless steel base, improve the activation energy of corrosion reaction, thereby can slow down the erosion rate of stainless steel base.On the other hand, the polar group of niacinamide or imidazolidinyl urea can be adsorbed by the electric charge of stainless steel-based surface, makes niacinamide or/and imidazolidinyl urea forms hydrophobic protective membrane in stainless steel-based surface, thus the reaction of prevention or slowing down corrosion.
Described complexing agent is Fe
3+complexing agent, its can with the Fe of stainless steel-based surface
3+there is complex reaction, delay the generation in the corrosion of stainless steel-based surface.Described complexing agent is ethylenediamine tetraacetic acid (EDTA) (EDTA).In described electrolytic stripping solution, the concentration of EDTA is 0.1-0.2g/L.
Described promotor is sodium laurylsulfonate (OP-10).In described electrolytic stripping solution, the content of OP-10 is 0.1-0.2g/L.Described promotor is in order to promote niacinamide and imidazolidinyl urea to form hydrophobic protective membrane in stainless steel-based surface.
The present invention also provides this electrolytic stripping solution of a kind of application to carry out the method for strip, comprises the steps:
Provide one to treat strip workpiece.This treats that the material of strip workpiece can be stainless steel or other ferrous alloys.This treats that strip workpiece surface is formed with metal carbide layer, metal nitride layer or metal carbonitride layer.
Described electrolytic stripping solution is provided, described matrix is carried out to electrolytic deplating process processing, its concrete operations and processing parameter are as follows: take and treat that strip workpiece is as anode, take carbon-point as negative electrode, will treat that strip workpiece and carbon-point are placed in described electrolytic stripping solution, carry out electrolytic deplating process.The temperature of described electrolytic stripping solution is room temperature.The current density of described electrolysis is 0.8 ~ 2A/dm
2, voltage is 1 ~ 5V, electrolysis time is 2 ~ 8min.
The electrolytic stripping solution that application is described, in the mode of electrolysis, metal carbide layer, metal nitride layer or the metal carbonitride layer on strip stainless steel or other ferrous alloy surfaces completely, strip speed is fast, and efficiency is high; And due to the existence of inhibiter and promotor, can effectively avoid treating the infringement of strip workpiece when electrolysis.
Understandable, described electrolytic stripping solution also can be used for metal carbide layer, metal nitride layer or the metal carbonitride layer that part strip is formed at workpiece surface, to treat that strip workpiece surface presents needed pattern, word, trade mark etc.
The method of carrying out strip below in conjunction with specific embodiment to applying this electrolytic stripping solution is described further.
Embodiment 1: take niacinamide 0.1g, imidazolidinyl urea 0.3g, EDTA 0.1g, OP-10 0.2g, and measure oxalic acid 3g, sulfuric acid 3ml and be configured to 1L electrolytic stripping solution (aqueous solution).The stainless steel that one surface is formed with to titanium nitride film treats that strip workpiece impregnated in this electrolytic stripping solution, and take that this treats that strip workpiece is as anode, the about 8min of energising electrolysis.The temperature of described electrolytic stripping solution is room temperature.The current density of described electrolysis is 0.8A/dm
2, voltage is 2V.After electrolytic removal titanium nitride film, strip is clean for titanium nitride film described in workpiece surface, and the stainless steel substrate surfacing of workpiece surface, and corrosion-free phenomenon occurs.
Embodiment 2: take niacinamide 0.3g, imidazolidinyl urea 0.1g, EDTA 0.2g, OP-10 0.2g, and measure oxalic acid 5ml, sulfuric acid 2ml and be configured to 1L electrolytic stripping solution (aqueous solution).The stainless steel that one surface is formed with to chromium nitride film layer treats that strip workpiece impregnated in this electrolytic stripping solution, and take that this treats that strip workpiece is as anode, the about 4min of energising electrolysis.The temperature of described electrolytic stripping solution is room temperature.The current density of described electrolysis is 1.4A/dm
2, voltage is 3V.After electrolytic removal chromium nitride film layer, strip is clean for chromium nitride film layer described in workpiece surface, and the stainless steel substrate surfacing of workpiece surface, and corrosion-free phenomenon occurs.
Embodiment 3: take niacinamide 0.3g, imidazolidinyl urea 0.1g, EDTA 0.2g, OP-10 0.2g, and measure acetic acid 5ml, sulfuric acid 2ml and be configured to 1L electrolytic stripping solution (aqueous solution).The stainless steel that one surface is formed with to chromium carbide rete treats that strip workpiece impregnated in this electrolytic stripping solution, and take that this treats that strip workpiece is as anode, the about 2min of energising electrolysis.The temperature of described electrolytic stripping solution is room temperature.The current density of described electrolysis is 2A/dm
2, voltage is 4V.After electrolytic removal chromium carbide rete, strip is clean for chromium carbide rete described in workpiece surface, and the stainless steel substrate surfacing of workpiece surface, and corrosion-free phenomenon occurs.
Claims (13)
1. an electrolytic stripping solution, it,, in order to strip metal carbide layer, metal nitride layer or metal carbonitride layer, is characterized in that: in this electrolytic stripping solution, contain acid, inhibiter and complexing agent, described acid is the combination of a kind of sulfuric acid and weak acid; Described inhibiter is nitrogenous, sulfur-bearing or organic compound hydroxyl and that simultaneously have hydrophilic group and oleophilic group; This complexing agent is Fe
3+complexing agent.
2. electrolytic stripping solution as claimed in claim 1, is characterized in that: this acid is the combination of a kind of and sulfuric acid in oxalic acid or acetic acid.
3. electrolytic stripping solution as claimed in claim 2, is characterized in that: in described electrolytic stripping solution, the quality percentage composition of oxalic acid is 3-5%, and the quality percentage composition of sulfuric acid is 1-3%.
4. electrolytic stripping solution as claimed in claim 2, is characterized in that: in described electrolytic stripping solution, the quality percentage composition of acetic acid is 3-5%, and the quality percentage composition of sulfuric acid is 1-3%.
5. electrolytic stripping solution as claimed in claim 1, is characterized in that: this inhibiter is at least one in niacinamide, imidazolidinyl urea and thiocarbamide.
6. electrolytic stripping solution as claimed in claim 1, is characterized in that: this inhibiter comprises niacinamide and imidazolidinyl urea, and in described electrolytic stripping solution, the concentration of niacinamide is 0.1-0.3g/L, and the concentration of imidazolidinyl urea is 0.1-0.3g/L.
7. electrolytic stripping solution as claimed in claim 1, is characterized in that: described complexing agent is ethylenediamine tetraacetic acid (EDTA).
8. electrolytic stripping solution as claimed in claim 7, is characterized in that: in described electrolytic stripping solution, the concentration of ethylenediamine tetraacetic acid (EDTA) is 0.1-0.2g/L.
9. electrolytic stripping solution as claimed in claim 1, is characterized in that: in described electrolytic stripping solution, also contain promotor, this promotor is sodium laurylsulfonate.
10. electrolytic stripping solution as claimed in claim 9, is characterized in that: in described electrolytic stripping solution, the content of sodium laurylsulfonate is 0.1-0.2g/L.
The electrolytic stripping solution of 11. application as described in any one in claim 1-10 carries out the method for strip, and it comprises the steps:
What provide that a surface is formed with metal carbide layer, metal nitride layer or metal carbonitride layer treats strip workpiece;
Will described in treat that strip workpiece is dipped in this electrolytic stripping solution, and using that this treats that strip workpiece is as anode, electrolysis is carried out in energising.
The method of 12. strips as claimed in claim 11, is characterized in that: described in treat that the material of strip workpiece is stainless steel or other ferrous alloys.
The method of 13. strips as claimed in claim 11, is characterized in that: the temperature of described electrolytic stripping solution is room temperature; The current density of described electrolysis is 0.8 ~ 2A/dm
2, voltage is 1 ~ 5V, electrolysis time is 2 ~ 8min.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210273318.8A CN103572360A (en) | 2012-08-02 | 2012-08-02 | Electrolytic stripping solution and method for stripping by applying same |
| TW101129441A TW201407004A (en) | 2012-08-02 | 2012-08-14 | Electroplated solution and methods for stripping coatings by using the electroplated solution |
| US13/720,136 US20140034514A1 (en) | 2012-08-02 | 2012-12-19 | Electrolyte for removing metal-carbide/nitride coatings or metal-carbide-nitride coatings and removing method using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210273318.8A CN103572360A (en) | 2012-08-02 | 2012-08-02 | Electrolytic stripping solution and method for stripping by applying same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103572360A true CN103572360A (en) | 2014-02-12 |
Family
ID=50024409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210273318.8A Pending CN103572360A (en) | 2012-08-02 | 2012-08-02 | Electrolytic stripping solution and method for stripping by applying same |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20140034514A1 (en) |
| CN (1) | CN103572360A (en) |
| TW (1) | TW201407004A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294273A (en) * | 2014-11-08 | 2015-01-21 | 汕头超声印制板（二厂）有限公司 | Non-toxic gold stripping liquid and method for detecting printed circuit board through non-toxic gold stripping liquid |
| CN104404611A (en) * | 2014-11-28 | 2015-03-11 | 江门市瑞期精细化学工程有限公司 | Electrolytic stripping agent for copper alloy surface coating and preparation method thereof |
| CN105401210A (en) * | 2015-11-30 | 2016-03-16 | 惠州市博美化工制品有限公司 | Environment-friendly stainless steel substrate plating stripping agent |
| CN112111741A (en) * | 2020-09-25 | 2020-12-22 | 深圳市祺鑫环保科技有限公司 | Tin stripping liquid copper protecting agent and tin stripping liquid |
| CN113832534A (en) * | 2021-10-12 | 2021-12-24 | 广州阿美新材料有限公司 | Aluminum alloy chromium-containing coating electrolytic stripping agent and stripping method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015139731A1 (en) * | 2014-03-18 | 2015-09-24 | Platit Ag | Method for delamination of ceramic hard material layers from steel and cemented carbide substrates |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3389065A (en) * | 1964-12-28 | 1968-06-18 | Kyowa Hakko Kogyo Kk | Method for electrolytically polishing stainless steel |
| US20070295611A1 (en) * | 2001-12-21 | 2007-12-27 | Liu Feng Q | Method and composition for polishing a substrate |
| KR100852242B1 (en) * | 2006-08-16 | 2008-08-13 | 삼성전자주식회사 | Slurry composition for chemical mechanical polishing, method of polishing using the same and method of manufacturing a semiconductor memory device |
| US8663607B2 (en) * | 2007-03-09 | 2014-03-04 | Battelle Memorial Institute | Ferrate(VI)-containing compositions and methods of using ferrate(VI) |
-
2012
- 2012-08-02 CN CN201210273318.8A patent/CN103572360A/en active Pending
- 2012-08-14 TW TW101129441A patent/TW201407004A/en unknown
- 2012-12-19 US US13/720,136 patent/US20140034514A1/en not_active Abandoned
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294273A (en) * | 2014-11-08 | 2015-01-21 | 汕头超声印制板（二厂）有限公司 | Non-toxic gold stripping liquid and method for detecting printed circuit board through non-toxic gold stripping liquid |
| CN104404611A (en) * | 2014-11-28 | 2015-03-11 | 江门市瑞期精细化学工程有限公司 | Electrolytic stripping agent for copper alloy surface coating and preparation method thereof |
| CN105401210A (en) * | 2015-11-30 | 2016-03-16 | 惠州市博美化工制品有限公司 | Environment-friendly stainless steel substrate plating stripping agent |
| CN112111741A (en) * | 2020-09-25 | 2020-12-22 | 深圳市祺鑫环保科技有限公司 | Tin stripping liquid copper protecting agent and tin stripping liquid |
| CN113832534A (en) * | 2021-10-12 | 2021-12-24 | 广州阿美新材料有限公司 | Aluminum alloy chromium-containing coating electrolytic stripping agent and stripping method thereof |
| CN113832534B (en) * | 2021-10-12 | 2024-02-20 | 广州阿美新材料有限公司 | Electrolytic stripping agent for chromium-containing coating of aluminum alloy and stripping method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| US20140034514A1 (en) | 2014-02-06 |
| TW201407004A (en) | 2014-02-16 |
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Application publication date: 20140212 |