CN101191207A - Magnesium alloy surface calcium series phosphorization solution and formation processing technique thereof - Google Patents
Magnesium alloy surface calcium series phosphorization solution and formation processing technique thereof Download PDFInfo
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- CN101191207A CN101191207A CNA2006100977483A CN200610097748A CN101191207A CN 101191207 A CN101191207 A CN 101191207A CN A2006100977483 A CNA2006100977483 A CN A2006100977483A CN 200610097748 A CN200610097748 A CN 200610097748A CN 101191207 A CN101191207 A CN 101191207A
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Abstract
The invention provides a Ca-system phosphating solution for magnesium alloy surfaces which takes the water as the solvent. Each liter of the solution comprises: calcium biphosphate of 5 to 80 g, phosphoric acid of 2 to 15 ml, nitrate of 2 to 15 g and polyphosphate of 0.1 to 5 g. For the process using the Ca-system phosphating solution to make surface treatment to the magnesium alloy, the process flow is degreasing, bath, acid activation, pure bath, surface conditioning, pure bath, conversion treatment, pure bath and drying; wherein, the concrete procedures of the conversion treatment in the process flow are that: the magnesium alloy workpiece made a pre-treatment is dipped into the Ca-system phosphating solution for treatment, the working temperature of the workpiece is between 20 and 35 DEG C, the conversion treatment time is between 20 seconds to 5 minutes. With the Ca-system phosphating solution for magnesium alloy surfaces of the invention and the conversion process thereof, the obtained membrane has good corrosion resistance, can meet the requirement of environmental protection; the conversion treatment can be made under room temperature without need to be heated, and has small energy consumption.
Description
[technical field]
Relevant a kind of phosphating solution of the present invention and chemical process technology thereof are meant a kind of magnesium alloy surface calcium series phosphating solution and chemical process technology thereof especially.
[background technology]
Magnesium alloy is low because of its proportion, intensity big and be suitable for reclaiming use, and be widely used in industrial circles such as automobile and telecommunications, but,, need usually after its surface forms anticorrosive rete, could use through chemical treatment because the chemical reactivity height and the corrosion stability of magnesium alloy are low.
The Chemical Converting Film of Magnesium Alloys treatment process is commonly used two classes: a class is the phosphoric acid salt film forming, and another kind of is the chromic salt film forming.At present one of surface protection technique that magnesium alloy is commonly used is a chromate treating: with chromic anhydride acid and dichromate is that the aqueous solution of main component carries out chemical treatment acquisition protective membrane; though technical maturity; stable performance; but because the sexavalent chrome in the treatment solution is poisonous; bring severe contamination to environment; do not meet environmental requirement, begun to forbid the use of chromium in the worldwide.Therefore, the Chrome-free chemical conversion of the magnesium alloy research and development of handling technology have become the important directions and the problem demanding prompt solution of magnesium alloy surface protective technical development.
In view of this, be necessary to develop a kind of magnesium alloy surface calcium series phosphating solution and chemical process technology thereof in fact, utilize solution of the present invention and chemical process technology, because it handles skill Intraoperative for the Chrome-free chemical conversion, can satisfy environmental protection requirement, and changing into processing can at room temperature carry out, and need not heat, and energy consumption is little.
[summary of the invention]
Therefore, the object of the present invention is to provide a kind of magnesium alloy surface calcium series phosphating solution and chemical process technology thereof, utilize solution of the present invention and chemical process technology, because it handles skill Intraoperative for the Chrome-free chemical conversion, can satisfy environmental protection requirement, and changing into processing can at room temperature carry out, need not heating unit, and energy consumption is little.
A kind of magnesium alloy surface calcium series phosphating solution provided by the invention is a solvent with water, contains in its every liter this solution:
Monocalcium phosphate 5-80g
Phosphoric acid 2-15ml
Nitrate 2-15g
Polyphosphoric acid salt 0.1-5g
Use magnesium alloy surface calcium series phosphating solution of the present invention to the flow process that magnesium alloy carries out surperficial chemical process technology to be: degreasing → washing → acid activation → pure water is washed → is shown accent → pure water and washes → change into processing → pure water and wash → dry; Wherein, described acid activation adopts acid to be organic acid, and described table is mediated reason institute's reagent that adopts and is shown adjustment for alkalescence, what described pure water adopted is industrial pure water, described oven dry is 120 ℃ of bakings 10-30 minute, the treatment step that changes in this technical process is specially in addition: will the magnesium alloy workpiece after pre-treatment impregnated in the above-mentioned calcium series phosphating solution and handle, its working temperature is 20～35 ℃, changes into the treatment time and be 20 second～5 minute.
Compared to prior art, monocalcium phosphate and phosphoric acid that calcium series phosphating solution main component of the present invention is nontoxic low price, and do not contain sexavalent chrome in the prescription, environmentally friendly, can satisfy the requirement of each side to the Chrome-free product, the material in the prescription is all nontoxic or low toxicity material, when using this prescription to produce in enormous quantities, can not produce murder by poisoning to producers, and with low cost.Changing into processing can at room temperature carry out, need not heating unit, and energy consumption is little.At aspect of performance, the corrosion resistance nature of this chemical process technology gained rete is good, does not have obviously corrosion after 8 hours through neutral salt spray test, can reach the requirement for anticorrosion of magnesium alloy fully.Aspect wastewater treatment, this prescription does not contain heavy metal ion, and wastewater treatment is simple, and environmental pollution is little.
For purpose of the present invention, structural attitude and function thereof are had further understanding, conjunction with figs. is described in detail as follows now:
[description of drawings]
Fig. 1 utilizes calcium series phosphating solution of the present invention Mg alloy surface to be changed into the technical process of processing.
[embodiment]
Make the magnesium alloy surface calcium series phosphating solution by following prescription:
Monocalcium phosphate 15g
Phosphoric acid 6ml
Nitrate 10g
Polyphosphoric acid salt 1g
See also Fig. 1, it illustrates to utilizing calcium series phosphating solution of the present invention Mg alloy surface to be changed into the technical process of processing.
Meaning as shown in the figure, this technical process is: degreasing → washing → acid activation → pure water is washed → is shown accent → pure water and washes → change into processing → pure water and wash → dry.
Particularly, will wash after the degreasing of AZ91D magnesium alloy sample surfaces, and then adopt organic acid that it is carried out activation treatment, this organic acid is selected from acetic acid, oxalic acid, oxalic acid, phenylformic acid.Adjust with the alkalescence table again after the technical pure washing and show to transfer, promptly change into processing after the technical pure washing once more, described magnesium alloy sample is put into the above-mentioned calcium series phosphating solution for preparing, left standstill under 25 ℃ 2 minutes, technical pure washing back is being toasted 20 minutes with its oven dry through 120 ℃ then.Through above-mentioned processing gained rete is shallow white, and its impedance is less than 1.0 ohm, and this rete can not have obviously corrosion by neutral salt spray test in 8 hours.
Compared to prior art, calcium series phosphating solution main component of the present invention is the biphosphate of nontoxic low price Calcium and phosphoric acid, and do not contain sexavalence chromium in the prescription, environmentally friendly, can satisfy each side to the Chrome-free product Requirement, the material in the prescription is all nontoxic or low toxicity material, when using this prescription to produce in enormous quantities, Can not produce murder by poisoning to producers, and with low cost. Changing into processing can at room temperature carry out, need not The heating device, energy consumption is little. Aspect performance, the corrosion-resistant performance of this chemical process technology gained rete is good, Do not have obviously corrosion after 8 hours through neutral salt spray test, can reach the anticorrosion requirement of magnesium alloy fully. Aspect wastewater treatment, this prescription does not contain heavy metal ion, and wastewater treatment is simple, and environmental pollution is little.
Claims (8)
1. a magnesium alloy surface calcium series phosphating solution is characterized in that, contains in every liter of this solution:
Monocalcium phosphate 5-80g;
Phosphoric acid 2-15ml;
Nitrate 2-15g;
Polyphosphoric acid salt 0.1-5g.
2. magnesium alloy surface calcium series phosphating solution according to claim 1 is characterized in that, the screening formulation of this solution is to contain in every liter of this solution:
Monocalcium phosphate 15g;
Phosphoric acid 6ml;
Nitrate 10g;
Polyphosphoric acid salt 1g.
3. Mg alloy surface chemical process technology, its technical process is substantially: degreasing → washing → acid activation → pure water is washed → is shown accent → pure water and washes → change into processing → pure water and wash → dry; Wherein, the treatment step that changes in this technical process is specially: will the magnesium alloy workpiece after pre-treatment impregnated in the above-mentioned magnesium alloy surface calcium series phosphating solution and handle, its working temperature is 20～35 ℃, changes into the treatment time and be 20 second～5 minute.
4. Mg alloy surface chemical process technology according to claim 3 is characterized in that, described acid activation adopts acid to be organic acid.
5. Mg alloy surface chemical process technology according to claim 3 is characterized in that, described table transfers institute's reagent that adopts to show adjustment for alkalescence.
6. Mg alloy surface chemical process technology according to claim 3 is characterized in that, what described pure water adopted is industrial pure water.
7. Mg alloy surface chemical process technology according to claim 3 is characterized in that, described oven dry is 120 ℃ of bakings 10-30 minute.
8. Mg alloy surface chemical process technology according to claim 4 is characterized in that described organic acid is selected from acetic acid, oxalic acid, oxalic acid, phenylformic acid.
Priority Applications (1)
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| CNA2006100977483A CN101191207A (en) | 2006-11-23 | 2006-11-23 | Magnesium alloy surface calcium series phosphorization solution and formation processing technique thereof |
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| CNA2006100977483A CN101191207A (en) | 2006-11-23 | 2006-11-23 | Magnesium alloy surface calcium series phosphorization solution and formation processing technique thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101824614A (en) * | 2010-04-15 | 2010-09-08 | 吉林大学 | Magnesium alloy surface conversion coating treating fluid and treating process thereof |
| CN101851755A (en) * | 2010-06-21 | 2010-10-06 | 山东省科学院新材料研究所 | Magnesium alloy chromium-free fluorine-free phosphorization solution and phosphorization method |
| CN101638780B (en) * | 2008-07-28 | 2011-05-18 | 比亚迪股份有限公司 | Magnesium alloy phosphorization solution and magnesium alloy surface treatment method |
| CN102677035A (en) * | 2012-05-29 | 2012-09-19 | 山东科技大学 | Magnesium alloy surface zinc calcium cerium phosphorization solution and transformation process thereof |
| CN102133837B (en) * | 2010-01-26 | 2013-01-09 | 汉达精密电子(昆山)有限公司 | Magnesium alloy appearance processing method |
| CN103396903A (en) * | 2013-07-24 | 2013-11-20 | 惠晶显示科技（苏州）有限公司 | Nondestructive cleaning liquid for cleaning TFT (thin film transistor) substrates and application method thereof |
| CN104928663A (en) * | 2015-04-28 | 2015-09-23 | 华南理工大学 | Chromium-free chemical conversion treatment method for magnesium alloy surface |
| CN105063577A (en) * | 2015-08-25 | 2015-11-18 | 山东建筑大学 | Method for preparing high-temperature-resistant phosphomycin calcium-apatite film |
| CN108867988A (en) * | 2018-05-15 | 2018-11-23 | 安徽德斯兰卡铝业科技有限公司 | A kind of production technology of wood-grain aluminum board |
| CN111926316A (en) * | 2015-12-25 | 2020-11-13 | 日本帕卡濑精株式会社 | Surface conditioner, magnesium material or magnesium alloy material with coating film, and method for producing same |
| CN112391661A (en) * | 2020-10-29 | 2021-02-23 | 昶宝电子科技(重庆)有限公司 | Formation process of buried magnesium aluminum panel |
| CN115216762A (en) * | 2022-06-17 | 2022-10-21 | 山西银光华盛镁业股份有限公司 | Chemical phosphorization method generally used for magnesium alloy |
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2006
- 2006-11-23 CN CNA2006100977483A patent/CN101191207A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101638780B (en) * | 2008-07-28 | 2011-05-18 | 比亚迪股份有限公司 | Magnesium alloy phosphorization solution and magnesium alloy surface treatment method |
| CN102133837B (en) * | 2010-01-26 | 2013-01-09 | 汉达精密电子(昆山)有限公司 | Magnesium alloy appearance processing method |
| CN101824614A (en) * | 2010-04-15 | 2010-09-08 | 吉林大学 | Magnesium alloy surface conversion coating treating fluid and treating process thereof |
| CN101851755A (en) * | 2010-06-21 | 2010-10-06 | 山东省科学院新材料研究所 | Magnesium alloy chromium-free fluorine-free phosphorization solution and phosphorization method |
| CN101851755B (en) * | 2010-06-21 | 2013-01-09 | 山东省科学院新材料研究所 | Magnesium alloy chromium-free fluorine-free phosphorization solution and phosphorization method |
| CN102677035A (en) * | 2012-05-29 | 2012-09-19 | 山东科技大学 | Magnesium alloy surface zinc calcium cerium phosphorization solution and transformation process thereof |
| CN103396903A (en) * | 2013-07-24 | 2013-11-20 | 惠晶显示科技（苏州）有限公司 | Nondestructive cleaning liquid for cleaning TFT (thin film transistor) substrates and application method thereof |
| CN103396903B (en) * | 2013-07-24 | 2015-07-01 | 惠晶显示科技（苏州）有限公司 | Nondestructive cleaning liquid for cleaning TFT (thin film transistor) substrates |
| CN104928663A (en) * | 2015-04-28 | 2015-09-23 | 华南理工大学 | Chromium-free chemical conversion treatment method for magnesium alloy surface |
| CN105063577A (en) * | 2015-08-25 | 2015-11-18 | 山东建筑大学 | Method for preparing high-temperature-resistant phosphomycin calcium-apatite film |
| CN111926316A (en) * | 2015-12-25 | 2020-11-13 | 日本帕卡濑精株式会社 | Surface conditioner, magnesium material or magnesium alloy material with coating film, and method for producing same |
| CN111926316B (en) * | 2015-12-25 | 2022-03-01 | 日本帕卡濑精株式会社 | Surface conditioner, magnesium material or magnesium alloy material with coating film, and method for producing same |
| US11725287B2 (en) | 2015-12-25 | 2023-08-15 | Nihon Parkerizing Co., Ltd. | Method for manufacturing a magnesium material or magnesium alloy material with a coating |
| CN108867988A (en) * | 2018-05-15 | 2018-11-23 | 安徽德斯兰卡铝业科技有限公司 | A kind of production technology of wood-grain aluminum board |
| CN112391661A (en) * | 2020-10-29 | 2021-02-23 | 昶宝电子科技(重庆)有限公司 | Formation process of buried magnesium aluminum panel |
| CN115216762A (en) * | 2022-06-17 | 2022-10-21 | 山西银光华盛镁业股份有限公司 | Chemical phosphorization method generally used for magnesium alloy |
| CN115216762B (en) * | 2022-06-17 | 2023-12-26 | 山西银光华盛镁业股份有限公司 | Chemical phosphating method for magnesium alloy |
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Open date: 20080604 |