CN102703947A - Bath solution supplementing method for microarc oxidation ion exchange membrane electrolytic bath - Google Patents
Bath solution supplementing method for microarc oxidation ion exchange membrane electrolytic bath Download PDFInfo
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Abstract
The invention provides a bath solution supplementing method for a microarc oxidation ion exchange membrane electrolytic bath. The method comprises the following steps of: measuring the content of hydroxide in solution in a cathode chamber; according to the measured content of the hydroxide, the quantity of microarc oxidation solution to be supplemented and the content of initial hydroxide in the microarc oxidation solution, transferring a certain volume of solution in the cathode chamber into a microarc oxidation solution supplementing bath; calculating the using amounts of other additives in the microarc oxidation solution to be supplemented, adding the additives into the supplementing bath and sufficiently stirring to ensure the additives to be dissolved; adding purified water, diluting to ensure the content of the hydroxide and the content of other additives to reach the initial content of microarc oxidation electrolyte to obtain supplemented solution; adding the regulated supplemented solution into an anode chamber of the electrolytic bath, controlling the flow of the supplemented solution and measuring the pH value of the supplemented solution so as to ensure the pH value of the supplemented solution in the initial pH value range; and after carrying out circular stirring on the solution in the anode chamber, normally carrying out microarc oxidation operation.
Description
Technical field
Surface by micro-arc oxidation processing technology field involved in the present invention particularly relates to the electrolyte solution replenishment method of surface by micro-arc oxidation such as a kind of duraluminum with ion-exchange membrane electrolyzer.
Background technology
When aluminum alloy surface was carried out anodic oxidation (anodizing) processing, electric current that treatment process is used or voltage can adopt direct current (DC) or exchange (AC), perhaps stack of AC and DC (AC+DC) and pulsed current (PC).When the curtage that is applied reaches certain value; On oxidized Al alloy parts, will produce spark (spark) or little electric arc (micro arc); At this moment; People just be referred to as differential arc oxidation (micro arc oxidation, MAO) or the oxidation of microplasma electrolytic solution (plasma electrolyte oxidation, PEO).
At present; Aluminum alloy differential arc oxidation or plasma electrolysis liquid oxidation technology; Normally will be equipped with in the electrolyzer of oxidation with electrolyte solution with being placed on simultaneously as the anodic Al alloy parts as the counter electrode of negative electrode; Be anode with negative electrode with contact with electrolyte solution with a kind of differential arc oxidation, have only a groove chamber, and be not divided into anolyte compartment and cathode compartment.All the time, adding by rule of thumb of the control of concentration of electrolyte solutions and solution amount operated, and therefore exists SOLUTION PROPERTIES to be difficult to problem steady in a long-term and that work-ing life is not long.
Therefore, the scientific approach that provides a kind of aluminum alloy differential arc oxidation ion-exchange membrane electrolyzer tank liquor to add is so that the tank liquor character long-term stability in the electrolyzer has crucial meaning.
Summary of the invention
In order to solve the problems referred to above that prior art exists, the purpose of this invention is to provide the tank liquor replenishment method of a kind of differential arc oxidation, so that the tank liquor character of electrolyzer is steady in a long-term with ion-exchange membrane electrolyzer.
To achieve these goals, the present invention is achieved by the following technical solutions:
A kind of differential arc oxidation ion-exchange membrane electrolyzer tank liquor replenishment method comprises the steps:
(1) the oxyhydroxide content (C1) in the mensuration cathode chamber solution;
(2) oxyhydroxide content (C0) in differential arc oxidation solution amount (V2) that adds according to the oxyhydroxide content of measuring and quasi-complement and the initial composition of differential arc oxidation electrolytic solution is transferred to differential arc oxidation solution with the cathode chamber solution of a certain amount of (V1) and is added in the groove (C1 * V1=C0 * V2);
(3) each components contents in differential arc oxidation solution amount that adds according to quasi-complement and the initial composition of differential arc oxidation electrolytic solution is calculated the consumption of other additive in the differential arc oxidation solution that quasi-complement adds and its adding is added in the groove, makes its dissolving after fully stirring;
(4) in adding groove, add pure water, make oxyhydroxide content and other content of additive be diluted to the initial content of differential arc oxidation electrolytic solution, obtain adding solution;
(5) will add in the anolyte compartment that solution adds the differential arc oxidation ion-exchange membrane electrolyzer that stirs of circulating; Control is added the flow of solution and is measured the pH value of adding back differential arc oxidation solution, makes its pH value in the initial pH value working range of differential arc oxidation solution;
(6) to the stirring that circulates of the differential arc oxidation ion-exchange membrane electrolyzer anolyte compartment solution of adding solution.
Among the present invention, term " differential arc oxidation ion-exchange membrane electrolyzer tank liquor ", " differential arc oxidation electrolytic solution ", " differential arc oxidation solution " and " electrolytic solution " are same implications.
Above-mentioned " other additives " is meant the additive beyond the oxyhydroxide in the electrolytic solution composition.
According to some embodiment of the present invention, when differential arc oxidation electrical parameter or the workpiece surface oxidation quality that carries out differential arc oxidation exceed the normal process allowed band, stop oxidation and carry out above-mentioned steps (1)-(6).
According to some embodiment of the present invention, said electrical parameter comprises striking voltage and electric current.
According to some embodiment of the present invention, the workpiece surface oxidation quality comprises zone of oxidation surface uniformity, roughness and thickness.
According to some embodiment of the present invention, said oxyhydroxide is alkali metal hydroxide.
According to some embodiment of the present invention, said oxyhydroxide is sodium hydroxide, Pottasium Hydroxide or Lithium Hydroxide MonoHydrate.
According to some embodiment of the present invention, said oxyhydroxide is sodium hydroxide.
According to some embodiment of the present invention, add pure electrical conductivity of water less than 0.1 μ s/cm in the above-mentioned steps (4).
According to some embodiment of the present invention, said amount is volume.
According to some embodiment of the present invention, antianode chamber solution circulated stirred 30 minutes at least in the above-mentioned steps (6).
According to some embodiment of the present invention, with sodium hydroxide or ammoniacal liquor adjustment pH value, make its pH value in the initial pH value working range of differential arc oxidation solution in the above-mentioned steps (5).
According to some embodiment of the present invention, said method is used for the differential arc oxidation of duraluminum, magnesiumalloy or titanium alloy.
According to some embodiment of the present invention, said other additive comprises at least a in water glass, sodium phosphate, sodium aluminate and the Sodium Tetraborate.
According to some embodiment of the present invention, said other additive also comprises N (C
2H
4OH)
3Perhaps NH
3.H
2O.
Adopt above-mentioned aluminum alloy differential arc oxidation ion-exchange membrane electrolyzer tank liquor replenishment method of the present invention, can effectively control the additional amount of electrolyte solution and make its long-term stability.
Description of drawings
Fig. 1 is an aluminum alloy differential arc oxidation ion-exchange membrane electrolyzer structural representation.
Fig. 2 is the aluminum alloy differential arc oxidation ion-exchange membrane electrolyzer structure sectional view that comprises the circulating filtration stirring system.
Fig. 3 is the structural representation of anolyte compartment's cell wall.
Fig. 4 is the A-A sectional view of anolyte compartment's cell wall among Fig. 3.
Embodiment
Below in conjunction with embodiment the present invention is elaborated.
The principle of related ion-exchange membrane electrolyzer structure is following among the present invention:
The electrolyzer that the present invention adopts is an ion-exchange membrane electrolyzer.As shown in Figure 1 is the synoptic diagram of a kind of embodiment of ion-exchange membrane electrolyzer structure.As shown in Figure 1, electrolyzer 1 is made up of with cathode compartment 12 anolyte compartment 11, and the anolyte compartment is placed in the cathode compartment.External source 2.During job initiation, adding with sodium hydroxide in the anolyte compartment is main moity, and water glass, sodium phosphate, sodium aluminate, Sodium Tetraborate etc. are less important moity, and the aluminum alloy differential arc oxidation that contains the prescribed volume amount of a small amount of other additive is simultaneously used electrolyte solution; Add the pure water of specific conductivity in the cathode compartment less than the prescribed volume amount of 0.1us/cm.Four sides (partition wall of promptly separating cathode compartment and anolyte compartment) of anolyte compartment are equipped with cationic exchange membrane.Cationic exchange membrane is to see through H
+, K
+, Na
+Cationic exchange membrane (for example, perfluorinated sulfonic acid type cationic exchange membrane Nafion 450, Nafion 324 or MC3470 etc.).Cationic exchange membrane has the special selected perviousness, only allows positively charged ion to pass through to stop negatively charged ion and gas to pass through, and promptly only allows H
+, K
+, Na
+Pass through Deng positively charged ion, and OH
-, SiO
3 2-, AlO
2-, PO
4 3-, B
2O
4 2-Deng negatively charged ion and the two poles of the earth product H
2And O
2Can't pass through.Pending Al alloy parts 10 is placed in the anolyte compartment 11 and as anode and is connected with external source 2; It is shaped as counter electrode (being negative electrode) and is close to cationic exchange membrane and is fixed on the erosion resistance stainless steel or titanium alloy screen frame (or plate) 13 of cathode compartment one side, is connected with external source 2 through negative electrode screen frame cable connection point 3.The the installing and fixing of cationic exchange membrane and cathode screen must guarantee stopping property so that the solution in anolyte compartment and the cathode compartment can not take place to leak causes being mixed with each other.
Be illustrated in figure 2 as the sectional view of ion-exchange membrane electrolyzer, wherein 4 and 5 is external circulating filtration stirring system, and 6 is anolyte compartment's cell wall, and 7 is the cathode compartment cell wall, and 8 is cathode chamber solution, and 9 is anolyte compartment's solution, and 10 is workpiece.
Be illustrated in figure 3 as the structural representation of anolyte compartment's cell wall.
Be illustrated in figure 4 as the A-A sectional view of anolyte compartment shown in Figure 3 cell wall.Wherein, 13 is negative electrode Stainless Steel Wire web plate, and 14 is cationic exchange membrane; 15 is the plastics screw; 16 is plastic cap nut, and 17,18 for making electrolyzer and the used macromolecular material of ion-exchange membrane partition wall, for example Vilaterm (PE), SE (PVC) or other polymer architecture materials.
The differential arc oxidation principle of work of ion-exchange membrane electrolyzer is following:
Shown in Fig. 1-4, connect the positive pole of power supply 2 as anodic Al alloy parts 10, connect the negative pole of power supply 2 as the counter electrode 13 of negative electrode.After energized, under effect of electric field, as negatively charged ion (for example, the OH in anodic Al alloy parts surface and the anolyte compartment
-, SiO
3 2-, AlO
2-, PO
4 3-, B
2O
4 2-Deng) react, thereby form oxidation film layer in aluminum alloy surface.Energising back H
+And H
2O generates H in the cathode surface discharge
2, promptly reacting is 2H
++ 2e
-=H
2↑, remaining OH
-Enrichment gradually.Na
+Then pass cationic exchange membrane 14 and get into cathode compartment generation NaOH solution by the anolyte compartment.
In the differential arc oxidation working process of ion-exchange membrane electrolyzer,, need add electrolyte solution along with electrolytical consumption.
In order effectively to control electrolyte solution and to make its long-term stability, the present invention provides the differential arc oxidation ion-exchange membrane electrolyzer tank liquor that is described below replenishment method.
Be main moity with sodium hydroxide below, water glass, sodium phosphate, sodium aluminate, Sodium Tetraborate etc. are less important moity, contain a small amount of other additive simultaneously (like N (C
2H
4OH)
3Perhaps NH
3.H
2O) aluminum alloy differential arc oxidation uses tank liquor as example adding with control method of solution to be described.
The operating process of this method mainly is made up of following steps:
(1) sodium hydrate content (C1) in the mensuration cathode chamber solution; Preferably, the assay of sodium hydroxide carries out with the method for GB/T 7698 regulations by GB/T 4348.1 or GB/T 11213.1.
(2) content (C0) of sodium hydroxide in liquor capacity amount (V2) that adds according to the sodium hydrate content of measuring and quasi-complement and the initial composition of differential arc oxidation electrolytic solution, (wherein the cathode compartment sodium hydroxide solution of C1 * V1=C0 * V2) is transferred to differential arc oxidation solution and is added in the groove with certain volume amount (V1);
(3) each components contents in differential arc oxidation liquor capacity amount (V2) that adds according to quasi-complement and the initial composition of differential arc oxidation electrolytic solution; Calculate required other additive in the differential arc oxidation solution that quasi-complement adds (as in water glass, sodium phosphate, sodium aluminate and the Sodium Tetraborate at least a), also comprise N (C sometimes
2H
4OH)
3Perhaps NH
3.H
2O) consumption (initial concentration of V2 * additive) is also added its adding in the groove, makes its dissolving after fully stirring;
(4) in adding groove, add pure water (like specific conductivity less than 0.1 μ s/cm); Make sodium hydrate content and other content of additive be diluted to the initial content of differential arc oxidation electrolytic solution; Promptly reach the initial concentration of each component of differential arc oxidation solution, obtain intending interpolation volume (V2) add solution;
That (5) will adjust adds in the anolyte compartment that solution joins the differential arc oxidation ion-exchange membrane electrolyzer that stirs of circulating; Control is added the flow of solution and is measured the pH value of adding back differential arc oxidation solution; (as through sodium hydroxide or ammoniacal liquor) adjustment pH value makes its value in the initial pH value working range of differential arc oxidation solution;
(6) solution in the differential arc oxidation ion-exchange membrane electrolyzer anolyte compartment that adds is circulated normally to carry out the differential arc oxidation operation after the stirring (as 30 minutes).
Embodiment 1:
Pending duraluminum is 2024 duraluminums; (for example press common differential arc oxidation preprocessing technical method before the differential arc oxidation; Mechanical grinding, oil removing grease removal, alkali cleaning etc.) it is carried out pre-treatment to obtain clean condition of surface; Consisting of of differential arc oxidation anolyte compartment work tank liquor: NaOH:4g/l, Na
2SiO
3: 2g/l, Na
3PO
4: 1g/l, additive are N (C
2H
4OH)
3: 5ml/l, all the other are water.
A) when the surface oxidation quality of differential arc oxidation electrical parameter (for example, striking voltage, electric current) or Al alloy parts exceeds normal process allowed band (for example, zone of oxidation surface uniformity, roughness and thickness etc.), stop oxide treatment;
B) sodium hydrate content (C1) in the mensuration cathode chamber solution; The assay of sodium hydroxide carries out with the method for GB/T 7698 regulations by GB/T 4348.1 or GB/T 11213.1.
C) concentration (4g/l) of NaOH in liquor capacity amount (V2) that adds according to the sodium hydrate content of measuring (C1) and quasi-complement and the initial composition of differential arc oxidation electrolytic solution, (wherein the cathode compartment sodium hydroxide solution of C1 * V1=4g/l * V2) is transferred to differential arc oxidation solution and is added in the groove with certain volume amount (V1); Add solution with new differential arc oxidation to be deployed.
D) Na in differential arc oxidation liquor capacity amount (V2) that adds according to quasi-complement and the initial composition of differential arc oxidation electrolytic solution
2SiO
3(2g/l), Na
3PO
4(1g/l), N (C
2H
4OH)
3Content (5ml/l), Na in the differential arc oxidation solution that the calculating quasi-complement adds
2SiO
3, Na
3PO
4, N (C
2H
4OH)
3Consumption (it is calculated as: Na
2SiO
3: V2 * 2g/l; Na
3PO
4: V2 * 1g/l; N (C
2H
4OH) 3:V2 * 5ml/l) and with its adding add in the groove makes its dissolving after fully stirring;
E) in adding groove, add pure water (specific conductivity is less than 0.1 μ s/cm); Make sodium hydrate content and other content of additive be diluted to the initial content of above-mentioned differential arc oxidation electrolytic solution; Promptly reach the initial concentration of each component of differential arc oxidation solution, obtain adding solution (V2);
That f) will adjust adds in the anolyte compartment that solution joins the differential arc oxidation ion-exchange membrane electrolyzer that stirs of circulating; Control is added the flow of solution and is measured the pH value of adding back differential arc oxidation solution; Through sodium hydroxide or ammoniacal liquor adjustment pH value, make its value in the initial pH value working range of differential arc oxidation solution;
G) solution in the differential arc oxidation ion-exchange membrane electrolyzer anolyte compartment that adds is circulated to stir normally to carry out the differential arc oxidation operation after 30 minutes.
Embodiment two:
Pending duraluminum is 2024 duraluminums, by common differential arc oxidation preprocessing technical method it is carried out pre-treatment to obtain clean condition of surface before the differential arc oxidation, and the initial set of aluminum alloy differential arc oxidation anolyte compartment work tank liquor becomes: NaOH 5g/l, NaAlO
22g/l, additive are NH
3.H
2O5ml/l, all the other are water.
A) the surface oxidation quality (for example, zone of oxidation surface uniformity, roughness and thickness etc.) when differential arc oxidation electrical parameter (for example, striking voltage, electric current) or Al alloy parts when exceeding the normal process allowed band, stops oxide treatment;
B) sodium hydrate content (C1) in the mensuration cathode chamber solution; The assay of sodium hydroxide carries out with the method for GB/T 7698 regulations by GB/T 4348.1 or GB/T 11213.1.
C) content (5g/l) of sodium hydroxide in liquor capacity amount (V2) that adds according to the sodium hydrate content of measuring and quasi-complement and the initial composition of differential arc oxidation electrolytic solution is with the cathode compartment sodium hydroxide solution of certain volume amount (V1) (C1 * V1=5g/l * V2) transfer to differential arc oxidation solution to add in the groove wherein;
D) NaAlO in differential arc oxidation liquor capacity amount (V2) that adds according to quasi-complement and the initial composition of differential arc oxidation electrolytic solution
2(2g/l) and NH
3.H
2The content of O (5ml/l), NaAlO in the differential arc oxidation solution that the calculating quasi-complement adds
2And NH
3.H
2The consumption of O (is calculated as: NaAlO
2: V2 * 2g/l; NH
3.H
2O:V2 * 5ml/l) and with its adding add in the groove makes its dissolving after fully stirring;
E) in adding groove, add pure water (specific conductivity is less than 0.1 μ s/cm), make sodium hydrate content and NaAlO
2And NH
3.H
2The content of O is diluted to the above-mentioned initial composition content of differential arc oxidation electrolytic solution, promptly reaches the initial concentration of each component of differential arc oxidation solution, obtains adding solution (V2);
That f) will adjust adds in the anolyte compartment that solution joins the differential arc oxidation ion-exchange membrane electrolyzer that stirs of circulating; Control is added the flow of solution and is measured the pH value of adding back differential arc oxidation solution; Through sodium hydroxide or ammoniacal liquor adjustment pH value, make its value in the initial pH value working range of differential arc oxidation solution;
G) solution in the differential arc oxidation ion-exchange membrane electrolyzer anolyte compartment that adds is circulated to stir normally to carry out the differential arc oxidation operation after 30 minutes.
Embodiment three:
Pending duraluminum is the A356 duraluminum, by common differential arc oxidation preprocessing technical method it is carried out pre-treatment to obtain consisting of of clean condition of surface aluminum alloy differential arc oxidation anolyte compartment work tank liquor before the differential arc oxidation: NaOH 6g/l, Na
2SiO
32g/l, Na
2B
4O
71g/l, additive are NH
3.H
2O 10ml/l, all the other are water.
A) the surface oxidation quality (for example, zone of oxidation surface uniformity, roughness and thickness etc.) when differential arc oxidation electrical parameter (for example, striking voltage, electric current) or Al alloy parts when exceeding the normal process allowed band, stops oxide treatment;
B) sodium hydrate content (C1) in the mensuration cathode chamber solution; The assay of sodium hydroxide carries out with the method for GB/T 7698 regulations by GB/T 4348.1 or GB/T 11213.1.
C) content of NaOH (6g/l) in solution amount (V2) that adds according to the sodium hydrate content of measuring and quasi-complement and the initial composition of differential arc oxidation electrolytic solution, (wherein the cathode compartment sodium hydroxide solution of C1 * V1=6g/l * V2) is transferred to differential arc oxidation solution and is added in the groove with certain volume amount (V1);
D) Na in differential arc oxidation liquor capacity amount (V2) that adds according to quasi-complement and the initial composition of differential arc oxidation electrolytic solution
2SiO
3(2g/l), Na
2B
4O
7(1g/l) and NH
3.H
2O (10ml/l), Na in the differential arc oxidation solution that the calculating quasi-complement adds
2SiO
3, Na
2B
4O
7And NH
3.H
2The consumption of O (is calculated as: Na
2SiO
3: V2 * 2g/l; Na
2B
4O
7: V2 * 1g/l; NH
3.H
2O:V2 * 5ml/l) and with its adding add in the groove makes its dissolving after fully stirring;
E) in adding groove, add pure water (specific conductivity is less than 0.1 μ s/cm); Make sodium hydrate content and other content of additive be diluted to the initial content of differential arc oxidation electrolytic solution; Promptly reach the initial concentration of each component of differential arc oxidation solution, obtain adding solution (V2);
That f) will adjust adds in the anolyte compartment that solution joins the differential arc oxidation ion-exchange membrane electrolyzer that stirs of circulating; Control is added the flow of solution and is measured the pH value of adding back differential arc oxidation solution; Through sodium hydroxide or ammoniacal liquor adjustment pH value, make its value in the initial pH value working range of differential arc oxidation solution;
G) solution in the ion-exchange membrane electrolyzer anolyte compartment that adds is circulated to stir normally to carry out the differential arc oxidation operation after 30 minutes.
Based on method of the present invention aluminum alloy surface differential arc oxidation ion-exchange membrane electrolyzer tank liquor is added and controlled, can effectively control the electrolytic cell tank liquor and make its long-term stability.
Though; It more than is the explanation of carrying out to aluminum alloy surface differential arc oxidation ion-exchange membrane electrolyzer tank liquor; But be not limited to duraluminum, if magnesiumalloy and titanium alloy can carry out differential arc oxidation in used tank liquor, method then of the present invention also is to be applicable to magnesiumalloy and titanium alloy.
Claims (14)
1. a differential arc oxidation ion-exchange membrane electrolyzer tank liquor replenishment method comprises the steps:
(1) the oxyhydroxide content in the mensuration cathode chamber solution;
(2) oxyhydroxide content in the differential arc oxidation solution amount that adds according to the oxyhydroxide content of measuring and quasi-complement and the initial composition of differential arc oxidation electrolytic solution is transferred to differential arc oxidation solution with a certain amount of cathode chamber solution and is added in the groove;
(3) each components contents in differential arc oxidation solution amount that adds according to quasi-complement and the initial composition of differential arc oxidation electrolytic solution is calculated the consumption of other additive in the differential arc oxidation solution that quasi-complement adds and its adding is added in the groove, makes its dissolving after fully stirring;
(4) in adding groove, add pure water, make oxyhydroxide content and other content of additive be diluted to the initial content of differential arc oxidation solution, obtain adding solution;
(5) will add in the anolyte compartment that solution adds the differential arc oxidation ion-exchange membrane electrolyzer that stirs of circulating; Control is added the flow of solution and is measured the pH value of adding back differential arc oxidation solution, makes its pH value in the initial pH value working range of differential arc oxidation solution;
(6) to the stirring that circulates of the differential arc oxidation ion-exchange membrane electrolyzer anolyte compartment solution of adding solution.
2. the method for claim 1 is characterized in that, when differential arc oxidation electrical parameter or the workpiece surface oxidation quality that carries out differential arc oxidation exceed the normal process allowed band, stops oxidation and carries out said step (1)-(6).
3. method as claimed in claim 2 is characterized in that said electrical parameter comprises striking voltage and electric current.
4. method as claimed in claim 3 is characterized in that the workpiece surface oxidation quality comprises zone of oxidation surface uniformity, roughness and thickness.
5. like the arbitrary described method of claim 1-4, it is characterized in that said oxyhydroxide is alkali metal hydroxide.
6. method as claimed in claim 5 is characterized in that, said oxyhydroxide is sodium hydroxide, Pottasium Hydroxide or Lithium Hydroxide MonoHydrate.
7. method as claimed in claim 6 is characterized in that, said oxyhydroxide is sodium hydroxide.
8. like the arbitrary described method of claim 1-7, it is characterized in that, add pure electrical conductivity of water less than 0.1 μ s/cm in the step (4).
9. like the arbitrary described method of claim 1-8, it is characterized in that said amount is a volume.
10. like the arbitrary described method of claim 1-9, it is characterized in that antianode chamber solution circulated stirred 30 minutes at least in the step (6).
11. like the arbitrary described method of claim 1-10, it is characterized in that, with sodium hydroxide or ammoniacal liquor adjustment pH value, make its pH value in the initial pH value working range of differential arc oxidation solution in the step (5).
12., it is characterized in that said method is used for the differential arc oxidation of duraluminum, magnesiumalloy or titanium alloy like the arbitrary described method of claim 1-11.
13., it is characterized in that said other additive comprises at least a in water glass, sodium phosphate, sodium aluminate and the Sodium Tetraborate like the arbitrary described method of claim 1-12.
14. method as claimed in claim 13 is characterized in that, said other additive also comprises N (C
2H
4OH)
3Perhaps NH
3.H
2O.
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| CN106133202A (en) * | 2014-03-26 | 2016-11-16 | 孙治镐 | There is the anodized system that the medicine utilizing electrolyte to automatically analyze puts into the metal of function |
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| CN101721995A (en) * | 2008-10-14 | 2010-06-09 | 山东泓达生物科技有限公司 | Preparation method of electrolyzed silver catalyst |
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