CN1552944A - Magnesium alloy surface alloying solid finishing agent - Google Patents
Magnesium alloy surface alloying solid finishing agent Download PDFInfo
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- CN1552944A CN1552944A CNA031351255A CN03135125A CN1552944A CN 1552944 A CN1552944 A CN 1552944A CN A031351255 A CNA031351255 A CN A031351255A CN 03135125 A CN03135125 A CN 03135125A CN 1552944 A CN1552944 A CN 1552944A
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- agent
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- stablizer
- magnesium alloy
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- Chemical Treatment Of Metals (AREA)
- Electroplating Methods And Accessories (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
A solid treating agent for surface alloying magnesium alloy comprises: primary metal salts 20 - 30 wt%, reducer 25 - 35 wt%, composite complex agent 29 - 40 wt%, buffering agent 10 - 15 wt%, stabilizing agent 0.02 wt%, and surfactant 0.005 - 0.012 wt%. It is produced easily and used conveniently. The formed corrosion-proof alloy film can be used as pre-treated film for normal electrolysis, chemical plating or coating process.
Description
The invention belongs to field of metal surface treatment, be specifically related to the alloying protection pre-treatment and the decorative plating method of Mg alloy surface.
Magnesium alloy is described as 21st century green metal structured material; exploitation is all dropped in countries in the world; carry out commercial application; but because its poor chemical stability; character is very active; the surface forms the MgO of unprotect performance rapidly in atmosphere, and easy and yin, yang ionic reaction causes corrosion in solution medium.How to form the pre-treatment preservative coat, just become the Mg alloy surface application, electroplate the key that the protected decoration rete need solve at Mg alloy surface.
At present, to magnesium alloy is anticorrosion many treatment formulations and method arranged both at home and abroad, mainly take surface chemistry oxidation, phosphorization filming, anode oxidation film-forming, various coating of application then carry out protected decoration.For example: publication number is the Chinese invention patent application of CN1294203 (May 9 calendar year 2001 open), carries out the chemical oxidation film forming in a kind of exactly aqueous solution that magnesium alloy is immersed permanganate, phosphoric acid salt, acetate, reaches anticorrosion purpose; Publication number is the Chinese patent application of CN1300878 (June 27 calendar year 2001 is open), magnesium alloy is immersed carry out the chemical membrane processing in chromic salt, permanganate, nitrate, the phosphatic combination solution; Publication number is the Chinese patent application of CN1317598 (October 17 calendar year 2001 is open), is magnesium alloy to be put into phosphate cpd handle, and obtains the trimagnesium phosphate protective membrane; Publication number is the Chinese patent application of CN1302341 (July 4 calendar year 2001 is open), is that magnesium alloy is handled in the alkaline phosphatase salts solution, forms the rete of polyphosphoric acid magnesium and trimagnesium phosphate.The literature search result.Do not find the product technology data of Mg alloy surface alloying solid processing agent.These existing chemical membrane solution improving the Mg alloy surface preservative effect, improve aspects such as coating performance, can show advantage separately.But also all have the common defective, promptly on the chemical membrane surface, outward appearance is gloomy, and the pretreatment layer that can only paint and decorate can not be electroplated finish.Limited the Application of Magnesium scope.
The objective of the invention is to: design a kind of Mg alloy surface alloying solid processing agent simple, easy to use of making.Can be formed with the electrical conductivity alloy rete of metalluster at Mg alloy surface, have antiseptic power, can be used as the pretreatment layer of Mg alloy surface application, plating and chemical functional plating simultaneously.To enlarge the Application of Magnesium scope.
Realize purpose of the present invention by the following technical solutions:
The prescription of Mg alloy surface alloying solid processing agent is formed (weight percent)
Master metal salt 20-30
Reductive agent 25-35
Combination complexing agent 29-40
Buffer reagent 10-15
Tensio-active agent 0.005-0.012
Stablizer 0.02
Master metal salt in the component, select for use nickelous carbonate, nickelous hypophosphite, nickel sulfamic acid,, sodium wolframate, neutralized verdigris, nickel acetate, nickelous fluoride, cobaltous carbonate, sodium stannate etc., can select the 1-2 kind for use.
Reductive agent in the component is selected sodium hypophosphite, potassium hypophosphite, sodium borohydride, POTASSIUM BOROHYDRIDE for use.
Combination complexing agent in the component can be selected citric acid and its esters for use, Sunmorl N 60S, ammonium acetate, sodium-acetate, Sodium Propionate, preferably Citrate trianion, ammonium bifluoride, ammonium acetate, Sodium Fluoride.
Buffer reagent in the component is selected sodium-acetate, ammonium chloride, ammonium bifluoride, Trisodium Citrate, Sodium Propionate for use.
Tensio-active agent in the component, select for use sodium lauryl sulphate,
Stablizer in the component is selected thiocarbamide, Cadmium Sulphate, lead nitrate, potassiumiodide for use.
Above each component is formed by prescription, be broken into powder, mix and just made Mg alloy surface alloying solid processing agent of the present invention.
During use, get the solid alloy treatment agent, be dissolved in water into the 5-10% aqueous solution.Adjust acidity to PH=5.5-6.5 with ammoniacal liquor, when being heated to 72-80 ℃, can will putting into solution and handle through surface degreasing, rust cleaning, activatory magnesium alloy, Mg alloy surface can the deposit alloy rete.Thicknesses of layers can be controlled with depositing time.The magnesium alloy of handling through the surface alloying pre-treatment can carry out conventional decorative plating.
Example
Prescription 1: nickel acetate 26%, inferior sodium phosphate 29%, combination complexing agent 30%, ammonium bifluoride 14.98%, potassiumiodide 0.02%, sodium lauryl sulphate 0.01%.Mix and get final product.
Get the Alloying Treatment agent 65g of prescription 1 combination, add pure water 1000ml stirring and dissolving and become to handle tank liquor, adjust Ph=5.8-6.8 with ammoniacal liquor and be heated to 75 ± 2 ℃, oil removing, rust cleaning, activatory magnesium alloy workpiece are put into tank liquor carry out Alloying Treatment, take out behind the 20-60min, washing is clean, electroplates or electroless plating.
Prescription 2: nickelous hypophosphite 20%, ortho phosphorous acid potassium 30%, citric acid 20%, ammonium bifluoride 10%, thiocarbamide ... 0.02%, sodium lauryl sulphate 0.05% mixes and gets final product.
Get prescription 2 Alloying Treatment agent powder 60g, be dissolved in one liter of pure water, adjust ph=5.6.-7 with ammoniacal liquor, be heated to 70-80 ℃, will be through oil removing, rust cleaning, activatory diecast magnesium alloy spare, put into and take out after solution soaks 20-60min, carry out conventional copper, nickel, chromium decorative plating or application after washing is clean and handle.
Claims (4)
1, a kind of master metal salt, reductive agent, combination complexing agent, buffer reagent, wetting agent, stablizer of containing is characterized in that its prescription composition (weight percent) is
Master metal salt 20-30
Reductive agent 25-35
Combination complexing agent 29-40
Buffer reagent 10-15
Tensio-active agent 0.005-0.012
Stablizer 0.02
2,, it is characterized in that master metal salt does not contain Cl according to the described solid alloy treatment agent of claim 1
-, SO
4 2+Metal-salt, preferably select nickel salts for use.
3, according to the described solid alloy treatment agent of claim 1, it is characterized in that described combination complexing agent, select for use the ammonium bifluoride, sodium-acetate and the Trisodium Citrate that contain fluorochemical to form; Buffer reagent is selected organic acid salt for use, preferably acetate or propionic salt; Tensio-active agent is selected anion surfactant for use, sodium lauryl sulphate; Stablizer is selected thiocarbamide or potassiumiodide for use.
4, according to the described solid alloy treatment agent of claim 1, it is characterized in that being dissolved in water and become solution, to carrying out immersion treatment through oil removing, rust cleaning, activatory Mg alloy surface, gained alloy rete can be used as the pretreatment layer of protection rete and plating, electroless plating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031351255A CN1327030C (en) | 2003-06-05 | 2003-06-05 | Magnesium alloy surface alloying solid finishing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031351255A CN1327030C (en) | 2003-06-05 | 2003-06-05 | Magnesium alloy surface alloying solid finishing agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1552944A true CN1552944A (en) | 2004-12-08 |
| CN1327030C CN1327030C (en) | 2007-07-18 |
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ID=34323183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031351255A Expired - Fee Related CN1327030C (en) | 2003-06-05 | 2003-06-05 | Magnesium alloy surface alloying solid finishing agent |
Country Status (1)
| Country | Link |
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| CN (1) | CN1327030C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005033A (en) * | 2014-05-19 | 2014-08-27 | 刘晓萍 | Anti-corrosion rust remover and preparation method thereof |
| CN104060246A (en) * | 2014-06-24 | 2014-09-24 | 中国南方航空工业(集团)有限公司 | Chemical plating solution for surface tinning of aluminum alloy and method for tinning on surface of aluminum alloy |
| CN110438482A (en) * | 2019-08-28 | 2019-11-12 | 安徽未来表面技术有限公司 | A kind of environment-friendly type metal surface vitrified agent |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237206C (en) * | 2002-01-23 | 2006-01-18 | 中国科学院金属研究所 | Method for preparing corrosion-resisting wearing-resisting coat used for magnesium and alloy thereof |
-
2003
- 2003-06-05 CN CNB031351255A patent/CN1327030C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005033A (en) * | 2014-05-19 | 2014-08-27 | 刘晓萍 | Anti-corrosion rust remover and preparation method thereof |
| CN104060246A (en) * | 2014-06-24 | 2014-09-24 | 中国南方航空工业(集团)有限公司 | Chemical plating solution for surface tinning of aluminum alloy and method for tinning on surface of aluminum alloy |
| CN104060246B (en) * | 2014-06-24 | 2017-08-15 | 中国南方航空工业(集团)有限公司 | The tin plating electroless solution of aluminum alloy surface and the tin plating method of aluminum alloy surface |
| CN110438482A (en) * | 2019-08-28 | 2019-11-12 | 安徽未来表面技术有限公司 | A kind of environment-friendly type metal surface vitrified agent |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1327030C (en) | 2007-07-18 |
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Granted publication date: 20070718 Termination date: 20100605 |