CN101914791B - Method for electroplating corrosion resistant aluminum-manganese alloy layer - Google Patents
Method for electroplating corrosion resistant aluminum-manganese alloy layer Download PDFInfo
- Publication number
- CN101914791B CN101914791B CN2010102821974A CN201010282197A CN101914791B CN 101914791 B CN101914791 B CN 101914791B CN 2010102821974 A CN2010102821974 A CN 2010102821974A CN 201010282197 A CN201010282197 A CN 201010282197A CN 101914791 B CN101914791 B CN 101914791B
- Authority
- CN
- China
- Prior art keywords
- manganese alloy
- alloy layer
- corrosion resistant
- weight percent
- resistant aluminum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The invention relates to a method for electroplating a corrosion resistant aluminum-manganese alloy layer. The method comprises the following steps of: preparing electroplate liquid which comprises the following components in percentage by weight: 65 to 79 percent of AlCl3, 12 to 20 percent of NaCl and 8 to 15 percent of KCl; heating the components; deoiling an electroplated part; performing acid activation in hydrochloric acid or sulfuric acid solution; performing electroplating; cleaning the electroplated part; and drying the electroplated part. The invention aims to obtain an aluminum-manganese alloy electroplated coating and an electroplating process so as to provide the method for electroplating a aluminum-manganese alloy electroplated coating of which the protective performance is better than that of a zinc coating, the corrosion resistance is improved by over 5 times compared with that of the zinc coating and the production cost is lower.
Description
Technical field
The present invention relates to a kind of electro-plating method of electrolytic coating, specifically belong to the electro-plating method of corrosion resistant aluminum-manganese alloy layer.
Background technology
With the fight of steel corrosion in, coating is extensively adopted as a kind of effective means.Its mechanical isolation effect, electrochemical cathodic protection interaction energy improve the anti-corrosion capability of body material effectively, greatly prolong its work-ing life.Metal plating divides anodic coating and cathodic electrodeposition coating, and what cathodic electrodeposition coating was common has: copper facing on the steel, nickel plating, chromium plating etc.Its protection philosophy mainly is the thermodynamic stability that relies on self, and corrosive medium and matrix are isolated, and matrix metal is shielded.The protective effect of anodic coating is then different, and it also can provide electronics to matrix metal through the oxidation of self except the buffer action with cathodic electrodeposition coating, matrix is applied galvanic protection.Like common galvanized sheet.
Aluminum and zinc is the same, also is anode material with respect to steel, because its sull is finer and close than the sull of zinc, available electric weight is more, so have stronger buffer action and galvanic protection performance.With zinc, each 1kg of aluminium is example, plates the thick coating of 12 μ m, but zinc steel plating plate 584m in theory
2(proportion 7.14), it is 30 coulombs (electrochemical equivalent 32.7) that the galvanic protection electric weight is provided; But aluminium steel plating plate 1543m then
2(proportion 2.7) provides 111 coulombs of galvanic protection electric weight (electrochemical equivalent 8.99), all is higher than zinc far away.In addition, aluminium also has good resistance to high temperature corrosion performance.Therefore, aluminium as coating than the superior performance of zinc many.Aspects such as that aluminium coat can be widely used in is electric, electronics, automobile, oil, metallurgy and chemical plant have fine application prospect.But aluminium is a kind of very active metal, and in the aqueous solution, its reduction potential is lower than hydrogen, causes aluminium coat from aqueous solution, not produce, and has limited application.
Summary of the invention
The objective of the invention is in order to obtain a kind of alumal electrolytic coating and electroplating technology, providing a kind of better than zinc coating protective value, corrosion resisting property can improve more than five times than zinc coating and the electro-plating method of the alumal coating of low production cost.
Realize the technical measures of above-mentioned purpose:
A kind of electro-plating method of corrosion resistant aluminum-manganese alloy layer, its step:
1) preparation electroplate liquid: the component of electroplate liquid and weight percent: AlCl
3: 65～79%, NaCl:12～20%, KCl:8～15%;
2) said components is heated, make it abundant fusing;
3) plating piece is carried out conventional oil removal treatment;
4) be that 10～15% hydrochloric acid or weight concentration are to carry out acid activation in 10～20% the sulfuric acid liquid in weight concentration;
5) electroplate: at first add the weight percent account for the said components gross weight and be 0.1～5% Manganous chloride tetrahydrate; The temperature of electroplate liquid is controlled at 160～190 ℃; Current density is 2.5～5.5A/dm
2The fused salt flow rate control is at 0.3～1 meter per second;
6) plating piece is cleaned;
7) adopt nature or hot blast to carry out drying to plating piece.
It is characterized in that: AlCl
3Preferred weight percent be: 70～75%.
It is characterized in that: the preferred weight percent of NaCl is: 13～16%.
The present invention is for steel; Alumal coating is the same with the zinc layer all to be anode material; Because it is amorphous structure (or containing a large amount of amorphous structures), the corrosion speed of self is extremely low, adds the sull more densification of sull than zinc; More galvanic protection electric weight can be provided, so have stronger buffer action and galvanic protection performance again.Zinc is compared with aluminium, manganese, and price is higher relatively, for the identical electroplating steel plate of thickness of coating, and the coated metal that needs, electro-galvanized layer is more than electroplating the aluminum-manganese alloy layer recuperation, and this makes the Electroplating Aluminum manganese alloy more much lower than electro-galvanizing production cost.In addition, alumal also has good resistance to high temperature corrosion performance.Therefore, alumal as coating than the superior performance of zinc many.Show that through test of 3%NaCl aqueous solution soaking and electrochemical tests measurement its solidity to corrosion is more than ten times of hot dip galvanizing steel plate coating.
Embodiment
Do below and further describe
Embodiment 1
A kind of electro-plating method of corrosion resistant aluminum-manganese alloy layer, its step:
1) preparation electroplate liquid: the component of electroplate liquid and weight percent: AlCl
3: 65%, NaCl:20%, KCl:15%;
2) said components is heated, make it abundant fusing;
3) plating piece is carried out conventional oil removal treatment;
4), weight concentration carries out acid activation in being 10% hydrochloric acid solution;
5) electroplate: at first add the weight percent account for the said components gross weight and be 0.1% Manganous chloride tetrahydrate; The temperature of electroplate liquid is controlled at 160～165 ℃; Current density is 2.5A/dm
2The fused salt flow rate control is at 0.3 meter per second;
6) plating piece is cleaned;
7) adopt nature or hot blast to carry out drying to plating piece.
Embodiment 2
A kind of electro-plating method of corrosion resistant aluminum-manganese alloy layer, its step:
1) preparation electroplate liquid: the component of electroplate liquid and weight percent: AlCl
3: 70%, NaCl:16%, KCl:14%;
2) said components is heated, make it abundant fusing;
3) plating piece is carried out conventional oil removal treatment;
4), weight concentration carries out acid activation in being 12% hydrochloric acid solution;
5) electroplate: at first add the weight percent account for the said components gross weight and be 1.5% Manganous chloride tetrahydrate; The temperature of electroplate liquid is controlled at 170～175 ℃; Current density is 3.5A/dm
2The fused salt flow rate control is at 0.7 meter per second;
6) plating piece is cleaned;
7) adopt nature or hot blast to carry out drying to plating piece.
Embodiment 3
A kind of electro-plating method of corrosion resistant aluminum-manganese alloy layer, its step:
1) preparation electroplate liquid: the component of electroplate liquid and weight percent: AlCl
3: 75%, NaCl:17%, KCl:8%;
2) said components is heated, make it abundant fusing;
3) plating piece is carried out conventional oil removal treatment;
4), weight concentration carries out acid activation in being 15% hydrochloric acid solution;
5) electroplate: at first add the weight percent account for the said components gross weight and be 3% Manganous chloride tetrahydrate; The temperature of electroplate liquid is controlled at 185～190 ℃; Current density is 4A/dm
2The fused salt flow rate control is at 0.8 meter per second;
6) plating piece is cleaned;
7) adopt nature or hot blast to carry out drying to plating piece.
Embodiment 4
A kind of electro-plating method of corrosion resistant aluminum-manganese alloy layer, its step:
1) preparation electroplate liquid: the component of electroplate liquid and weight percent: AlCl
3: 79%, NaCl:12%, KCl:11%;
2) said components is heated, make it abundant fusing;
3) plating piece is carried out conventional oil removal treatment;
4), weight concentration carries out acid activation in being 15% sulfuric acid liquid;
5) electroplate: at first add the weight percent account for the said components gross weight and be 0.8% Manganous chloride tetrahydrate; The temperature of electroplate liquid is controlled at 165～170 ℃; Current density is 3A/dm
2The fused salt flow rate control is at 0.5 meter per second;
6) plating piece is cleaned;
7) adopt nature or hot blast to carry out drying to plating piece.
Embodiment 5
A kind of electro-plating method of corrosion resistant aluminum-manganese alloy layer, its step:
1) preparation electroplate liquid: the component of electroplate liquid and weight percent: AlCl
3: 72%, NaCl:16%, KCl:12%;
2) said components is heated, make it abundant fusing;
3) plating piece is carried out conventional oil removal treatment;
4), weight concentration carries out acid activation in being 20% sulfuric acid liquid;
5) electroplate: at first add the weight percent account for the said components gross weight and be 5% Manganous chloride tetrahydrate; The temperature of electroplate liquid is controlled at 180～188 ℃; Current density is 5.5A/dm
2The fused salt flow rate control is at 1 meter per second;
6) plating piece is cleaned;
7) adopt nature or hot blast to carry out drying to plating piece.
Embodiment 6
A kind of electro-plating method of corrosion resistant aluminum-manganese alloy layer, its step:
1) preparation electroplate liquid: the component of electroplate liquid and weight percent: AlCl
3: 68%, NaCl:18%, KCl:14%;
2) said components is heated, make it abundant fusing;
3) plating piece is carried out conventional oil removal treatment;
4), weight concentration carries out acid activation in being 10% hydrochloric acid solution;
5) electroplate: at first add the weight percent account for the said components gross weight and be 2% Manganous chloride tetrahydrate; The temperature of electroplate liquid is controlled at 165～170 ℃; Current density is 3A/dm
2The fused salt flow rate control is at 0.6 meter per second;
6) plating piece is cleaned;
7) adopt nature or hot blast to carry out drying to plating piece.
The corrosion test condition:
Sample adopts the acetone oil removing, opposes with hot dip galvanizing plate and compares sample.In the 3%NaCl aqueous solution, carrying out total immersion test under 25～32 ℃ the temperature, changing once in the every 5-7 of solution days.After the test, adopt the rust cleaning prescription that annex A provides in " IS08407 " that sample is eliminated rust.Evaluate the solidity to corrosion of sample with weightlessness, corrosion test result sees table 1.
Table 13%NaCl aqueous solution soaking test-results
Can find out that from table 1 under identical corrosion-resistant condition, the zinc coating corrosion resisting property is poor more than alumal coating of the present invention, has proved absolutely the high-performance of coating of the present invention, having overcome the prior art aluminium lamination can't a galvanized difficult problem.
Claims (3)
1. the electro-plating method of a corrosion resistant aluminum-manganese alloy layer, its step:
1) preparation electroplate liquid: the component of electroplate liquid and weight percent: AlCl
3: 65～75%, NaCl:12～20%, KCl:12～15%;
2) said components is heated, make it abundant fusing;
3) plating piece is carried out conventional oil removal treatment;
4) be that 10～15% hydrochloric acid or weight concentration are to carry out acid activation in 10～20% the sulfuric acid liquid in weight concentration;
5) electroplate: at first add the weight percent account for the said components gross weight and be 0.1～5% Manganous chloride tetrahydrate; The temperature of electroplate liquid is controlled at 160～190 ℃; Current density is 2.5～5.5A/dm
2The fused salt flow rate control is at 0.3～1 meter per second;
6) plating piece is cleaned;
7) adopt nature or hot blast to carry out drying to plating piece.
2. the electro-plating method of a kind of corrosion resistant aluminum-manganese alloy layer as claimed in claim 1 is characterized in that: AlCl
3Preferred weight percent be: 70～75%.
3. the electro-plating method of a kind of corrosion resistant aluminum-manganese alloy layer as claimed in claim 1, it is characterized in that: the preferred weight percent of NaCl is: 13～16%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102821974A CN101914791B (en) | 2010-09-15 | 2010-09-15 | Method for electroplating corrosion resistant aluminum-manganese alloy layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102821974A CN101914791B (en) | 2010-09-15 | 2010-09-15 | Method for electroplating corrosion resistant aluminum-manganese alloy layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101914791A CN101914791A (en) | 2010-12-15 |
| CN101914791B true CN101914791B (en) | 2012-08-22 |
Family
ID=43322422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102821974A Expired - Fee Related CN101914791B (en) | 2010-09-15 | 2010-09-15 | Method for electroplating corrosion resistant aluminum-manganese alloy layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101914791B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017031429A1 (en) * | 2015-08-20 | 2017-02-23 | Xtalic Corporation | Magnets including an aluminum manganese alloy coating layer and related methods |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1152631A (en) * | 1995-12-19 | 1997-06-25 | 中国科学院化工冶金研究所 | Al-Ti alloy plating and making method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781785A (en) * | 2009-01-14 | 2010-07-21 | 中国科学院金属研究所 | Method for plating high corrosion resistant aluminum-manganese alloy on surface of magnesium alloy |
-
2010
- 2010-09-15 CN CN2010102821974A patent/CN101914791B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1152631A (en) * | 1995-12-19 | 1997-06-25 | 中国科学院化工冶金研究所 | Al-Ti alloy plating and making method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 夏杨.无机熔融盐电镀铝及其合金的工艺与性能研究.《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》.2007, * |
| 杨占红等.Al-Mn 合金镀层的微观结构及耐蚀性.《中国有色金属学报》.2008,第18卷(第4期),667-670. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101914791A (en) | 2010-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101243211B (en) | Pretreatment of magnesium substrates for electroplating | |
| CN101696500B (en) | Method for anticorrosion treatment on surface of magnesium alloy material | |
| Fayomi et al. | Investigation on microstructural, anti-corrosion and mechanical properties of doped Zn–Al–SnO2 metal matrix composite coating on mild steel | |
| Guo et al. | Characterization of highly corrosion-resistant nanocrystalline Ni coating electrodeposited on Mg–Nd–Zn–Zr alloy from a eutectic-based ionic liquid | |
| CN104790004A (en) | Nickel and/or chromium plated component and manufacturing method thereof | |
| CN110699724B (en) | High-corrosion-resistance nickel-tungsten-based alloy multilayer coating and preparation process thereof | |
| CN103320790A (en) | Zinc chemical surface treatment technology | |
| Chen et al. | Corrosion-resistant electrochemical plating of magnesium (Mg) alloys | |
| CN104109828A (en) | Hot-dip galvanized alloy plating for electric transmission line overhead ground wire and preparing process thereof | |
| Wang et al. | Electrodeposition of Cu coating with high corrosion resistance on Mg–3.0 Nd–0.2 Zn–0.4 Zr magnesium alloy | |
| CN103911649B (en) | A kind of preparation method of zinc bace composite coating layer | |
| Zhang et al. | Electrodeposition of Cu-Zn alloy from EMImTfO ionic liquid/ethanol mixtures for replacing the cyanide zincate layer on Al alloy | |
| CN102953106B (en) | A kind of protective layer for metallic surface and preparation thereof | |
| CN107190288A (en) | A kind of preparation method of HEDP copper facing imporosity thin layer | |
| CN101914791B (en) | Method for electroplating corrosion resistant aluminum-manganese alloy layer | |
| CN1281787C (en) | Magnesium and magnesium alloy high corrosion resitance composite cladding and its preparing process | |
| JP5812041B2 (en) | Method for producing zinc-based electroplated steel sheet | |
| DK2770088T3 (en) | Extremely corrosion resistant steel blanks and method of making them | |
| CN105543919B (en) | The method that Mg alloy surface forms plating conductive coating by physical vapour deposition (PVD) | |
| US8425751B1 (en) | Systems and methods for the electrodeposition of a nickel-cobalt alloy | |
| CN102774068B (en) | Aluminum alloy electroplating product and preparation method thereof | |
| Lee et al. | Electroless Ni-P/diamond/graphene composite coatings and characterization of their wear and corrosion resistance in sodium chloride solution | |
| US20200378028A1 (en) | Electrolytic Preparation Of A Metal Substrate For Subsequent Electrodeposition | |
| Bahrololoom et al. | Microstructure, morphology and corrosion resistance of electrodeposited zinc-cobalt compositionally modulated alloy multilayer coatings | |
| Bhat et al. | Corrosion performance of zinc based binary and ternary alloy coatings |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20170915 |