CN110219030A - Using tap water as the micro-arc oxidation electrolyte of solvent, method and products thereof - Google Patents
Using tap water as the micro-arc oxidation electrolyte of solvent, method and products thereof Download PDFInfo
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- CN110219030A CN110219030A CN201810173107.4A CN201810173107A CN110219030A CN 110219030 A CN110219030 A CN 110219030A CN 201810173107 A CN201810173107 A CN 201810173107A CN 110219030 A CN110219030 A CN 110219030A
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- arc oxidation
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- oxidation electrolyte
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/026—Anodisation with spark discharge
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Abstract
The present invention relates to technical field of micro-arc oxidization, are specifically related to a kind of using tap water as the micro-arc oxidation electrolyte of solvent, method and products thereof.The micro-arc oxidation electrolyte includes: silicate 9-15g/L；Phosphate 5-12g/L；Potassium fluoride 6-10g/L；Alkaline conditioner 4-8g/L；Diethanol amine 0.5-1.2g/L；Solvent is tap water；The differential arc oxidation method includes: that (1) prepares micro-arc oxidation electrolyte；(2) micro-arc oxidation electrolyte is pre-processed；(3) mao power source is set；(4) micro-arc oxidation treatment is carried out to trial-production piece；(5) it cleans the trial-production piece and dries.Compared to the prior art, micro-arc oxidation electrolyte of the invention can directly prepare micro-arc oxidation electrolyte using tap water as solvent, and the ceramic membrane that thus micro-arc oxidation electrolyte is handled is identical as using deionized water to prepare the effect of micro-arc oxidation electrolyte under the same terms in terms of salt spray test, coating mesh segmentation.
Description
[technical field]
The present invention relates to technical field of micro-arc oxidization, are specifically related to a kind of using tap water as the electrolysis of the differential arc oxidation of solvent
Liquid, method and products thereof.
[background technique]
Differential arc oxidization technique is referred on the basis of common anode oxidation, is enhanced using arc discharge and activated in anode
The reaction of upper generation, thus forming good reinforcing ceramic membrane by the workpiece surface of material of aluminium, titanium, magnesium metal and its alloy
Method.By applying voltage on workpiece with dedicated mao power source, make the metal and electrolyte solution of workpiece surface
Interaction forms micro-arc discharge in workpiece surface, and under the action of the factors such as high temperature, electric field, metal surface forms ceramic membrane,
Achieve the purpose that workpiece surface is strengthened.
In the prior art, use deionized water as the solvent for preparing micro-arc oxidation electrolyte more.It does so, can prevent
Impurity effect differential arc oxidation electrolytic efficiency in water.However, deionized water is required in terms of producing and relevant device
Comparable investment, but have to using deionized water as differential arc oxidation solvent.
Common impurity is chloride ion in tap water, and chloride ion can make differential arc oxidation film layer embrittlement occur, and salt spray resistance is surveyed
Effect is tried to be deteriorated.If to would have to the influence for considering chloride ion using tap water as the solvent of microarc oxidation solution；Have
When, by still containing a small amount of chloride ion in the pretreated electrolyte that dechlorinates, it can still result in micro-arc oxidation films corrosion resistance variation.
In view of this, it is a kind of using tap water as the micro-arc oxidation electrolyte of solvent it is really necessary to develop, to solve above-mentioned ask
Topic.
[summary of the invention]
Therefore, the purpose of the present invention is to provide a kind of using tap water as the micro-arc oxidation electrolyte of solvent.The differential arc oxidation
Electrolyte can be directly using tap water as solvent.
In order to achieve the above object, which includes:
Solvent is tap water.
Preferably, the silicate is sodium metasilicate.
Preferably, the phosphate is sodium pyrophosphate.
Preferably, the alkaline conditioner is one of sodium hydroxide or potassium hydroxide.
Preferably, it is described using tap water as the micro-arc oxidation electrolyte of solvent further include 0.5-1.2g/L diethanol amine,
0.01-0.1g/L sodium thiosulfate, 1-1.5g/L sodium aluminate.
The invention also includes a kind of differential arc oxidation methods using above-mentioned micro-arc oxidation electrolyte comprising:
(1) micro-arc oxidation electrolyte is prepared；
(2) micro-arc oxidation electrolyte is pre-processed；
(3) mao power source is set；
(4) micro-arc oxidation treatment is carried out to trial-production piece；
(5) it cleans the trial-production piece and dries.
Preferably, the pretreatment in the step (2), which refers to, is steam heated to 45-55 for the micro-arc oxidation electrolyte
DEG C, during which to the micro-arc oxidation electrolyte air-blowing, it is allowed in aeration state, duration 24-36H.
Preferably, the mao power source is 30A300V type bidirectional pulse mao power source.
Preferably, the differential arc oxidation method further includes step (6), i.e., salt spray test, coating are carried out to the trial-production piece
Mesh segmentation test.
Preferably, the more of densification are presented in the differential arc oxidation film layer on the trial-production piece surface obtained by the step (5)
Poroid ceramic structure.
The invention also includes a kind of products handled using above-mentioned micro-arc oxidation electrolyte.
Compared to the prior art, micro-arc oxidation electrolyte of the invention can directly prepare the differential of the arc using tap water as solvent
Oxidation electrolyte.Most of chloride ion in electrolyte is removed in advance by the Air Exposure of electrolyte, is only contained in electrolyte
A small amount of chloride ion, and be formulated in phosphate and diethanol amine can increase micro-arc oxidation electrolyte institute at micro-arc oxidation films resisting
Corrosivity.Thus the ceramic membrane that micro-arc oxidation electrolyte is handled in terms of salt spray test, coating mesh segmentation with
The effect for preparing micro-arc oxidation electrolyte using deionized water under the same terms is identical.
[specific embodiment]
Preferred embodiments below is provided with regard to the present invention.
The material that piece is manufactured experimently selected by the present embodiment is magnesium alloy AZ31, size are as follows: 22*80*1.0mm.
Firstly, ungrease treatment is carried out to magnesium alloy AZ31 trial-production piece, to remove the greasy dirt on its surface.It is used de-
Rouge agent is M-121, and concentration is 50 ± 10g/L, is carried out at a temperature of 70 ± 5 DEG C.Time continues 240-300s.To it after degreasing
It is washed, to wash remaining degreasing agent on its surface.
Prepare micro-arc oxidation electrolyte.Select 9g/L sodium metasilicate, 5g/L sodium pyrophosphate, 8g/L potassium fluoride, 4g/L hydroxide
Sodium, 0.8g/L diethanol amine and 0.05g/L sodium thiosulfate, solvent are tap water, successively prepare micro-arc oxidation electrolyte.This
In " tap water " refer to tap water refer to by water treatment plants purification, disinfection after produce meet respective standard
For people life, produce and use water, meet national drinking water standard.
Configured micro-arc oxidation electrolyte is placed in a groove body and is stood, 45-55 DEG C can be steam heated to, selected here
With 45 DEG C；The period air-blowing into groove body always makes electrolyte be in aeration state, and stands 24-36 hours, and selection 24 is small here
When；The intracorporal electrolyte temperature of slot is then reduced to 25 DEG C, can be used to micro-arc oxidation treatment.
The mao power source that the present embodiment is selected is 30A300V type bidirectional pulse mao power source.Differential arc oxidation electricity
It is as follows that range can be selected in parameter: current density 1.5-5A/dm2；Forward voltage is 350-410V, and negative voltage is -85--
200V；Duty ratio is 15-30%；Frequency is 300-900Hz.
Electrical parameter condition selected by the present embodiment differential arc oxidation are as follows: current density 2.2A/dm2；Forward voltage is
385V, negative voltage are -105V；Duty ratio is 15%；Frequency is 750Hz, and the differential arc oxidation time continues 6min.
Trial-production piece is cleaned and toasted after the completion of differential arc oxidation.It can be observed that piece Surface Creation one layer of trial-production fine and close
Cellular ceramic layer film layer is 9um through measurement average thickness.
It is tested for the property according to above-mentioned magnesium alloy trial-production piece.Test result please refers to following table.
It is learnt by the test result in upper table, the test of coating mesh segmentation and salt spray test result OK.By above-described embodiment
The solvent of micro-arc oxidation electrolyte is changed to deionized water by tap water, and to carry out differential arc oxidation, institute under same experimental conditions
The salt spray test of obtained magnesium alloy trial-production piece and the test of coating mesh segmentation are identical as upper table.It follows that the present invention can be with
Using tap water as the solvent of micro-arc oxidation electrolyte and it will not influence the effect of differential arc oxidation.
Wherein, the reason of " to prepared microarc oxidation solution air-blowing, electrolyte being made to be in aeration state ", is originally
Water wherein contains chloride ion since the needs of disinfection often will use disinfection by chlorine more, and chloride ion is to micro-arc oxidation films
Corrosion resistance has a certain impact.Heating aeration is precisely in order to remove chloride ion in electrolyte.
Wherein, in above-described embodiment, even if still remaining chloride ion in electrolyte after Air Exposure, in formula
Phosphate and diethanol amine can also greatly improve the corrosion resistance of differential arc oxidation film layer；In other words, if lacking phosphorus in formula
Hydrochlorate and diethanol amine use the corrosion resistance of micro-arc oxidation films made from the micro-arc oxidation electrolyte that tap water is solvent preparation
It will be very poor.
Wherein, the magnesium alloy AZ31 in above-described embodiment refers to the magnesium alloy containing 9% aluminium, 1% zinc.
Wherein, Microarc oxidation electrolyte formula of the invention is in being capable of forming micro-arc oxidation films within the scope of respective concentration,
The present embodiment is only chosen wherein one group of concentration and is illustrated.
It should be pointed out that the present invention is not limited to the above embodiments, any person skilled in the art is based on this
Inventive technique scheme both falls within protection of the invention to any simple modification, equivalent change and modification made by above-described embodiment
In range.
Claims (10)
1. a kind of using tap water as the micro-arc oxidation electrolyte of solvent, characterized in that it comprises:
Solvent is tap water.
2. according to claim 1 using tap water as the micro-arc oxidation electrolyte of solvent, which is characterized in that the silicate
For sodium metasilicate.
3. according to claim 1 using tap water as the micro-arc oxidation electrolyte of solvent, which is characterized in that the phosphate
For sodium pyrophosphate.
4. according to claim 1 using tap water as the micro-arc oxidation electrolyte of solvent, which is characterized in that the alkalinity is adjusted
Saving agent is one of sodium hydroxide or potassium hydroxide.
5. according to claim 1 using tap water as the micro-arc oxidation electrolyte of solvent, which is characterized in that described with originally
Water is that the micro-arc oxidation electrolyte of solvent further includes 0.01-0.1g/L sodium thiosulfate, 1-1.5g/L sodium aluminate.
6. a kind of differential arc oxidation method using the micro-arc oxidation electrolyte as described in any one of claim 1 to 5, feature
It is comprising:
(1) micro-arc oxidation electrolyte is prepared；
(2) micro-arc oxidation electrolyte is pre-processed；
(3) mao power source is set；
(4) micro-arc oxidation treatment is carried out to trial-production piece；
(5) it cleans the trial-production piece and dries.
7. differential arc oxidation method according to claim 5, which is characterized in that the pretreatment in the step (2) refer to by
The micro-arc oxidation electrolyte is steam heated to 45-55 DEG C, during which to the micro-arc oxidation electrolyte air-blowing, is allowed in aeration
State, duration 24-36H.
8. differential arc oxidation method according to claim 5, which is characterized in that the mao power source is 30A300V type
Bidirectional pulse mao power source.
9. differential arc oxidation method according to claim 5, which is characterized in that the differential arc oxidation method further includes step
(6), i.e., salt spray test is carried out to the trial-production piece, coating mesh segmentation is tested.
10. a kind of product, which is characterized in that it is using the micro-arc oxidation electrolyte as described in any one of claim 1 to 5
Handle obtained product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810173107.4A CN110219030A (en) | 2018-03-02 | 2018-03-02 | Using tap water as the micro-arc oxidation electrolyte of solvent, method and products thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810173107.4A CN110219030A (en) | 2018-03-02 | 2018-03-02 | Using tap water as the micro-arc oxidation electrolyte of solvent, method and products thereof |
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| CN201810173107.4A Pending CN110219030A (en) | 2018-03-02 | 2018-03-02 | Using tap water as the micro-arc oxidation electrolyte of solvent, method and products thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220213611A1 (en) * | 2021-01-05 | 2022-07-07 | Giant Glory International Limited | Electrolyte for micro-arc oxidation and method for dyeing substrate therein |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101559239A (en) * | 2009-05-27 | 2009-10-21 | 山东大学 | Magnesium base degradable implant material and preparation method thereof |
| CN101613863A (en) * | 2008-06-25 | 2009-12-30 | 罗琮贵 | A kind of aqueous fuel that utilizes tourmalinite instant water to be decomposed into hydrogen-oxygen |
-
2018
- 2018-03-02 CN CN201810173107.4A patent/CN110219030A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613863A (en) * | 2008-06-25 | 2009-12-30 | 罗琮贵 | A kind of aqueous fuel that utilizes tourmalinite instant water to be decomposed into hydrogen-oxygen |
| CN101559239A (en) * | 2009-05-27 | 2009-10-21 | 山东大学 | Magnesium base degradable implant material and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220213611A1 (en) * | 2021-01-05 | 2022-07-07 | Giant Glory International Limited | Electrolyte for micro-arc oxidation and method for dyeing substrate therein |
| CN114717633A (en) * | 2021-01-05 | 2022-07-08 | 萨摩亚商大煜国际有限公司 | Electrolyte for micro-arc oxidation and metal dyeing method |
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Effective date of registration: 20190829 Address after: 243000 No. 1430 Huxi Southwest Road, Ma'anshan Economic and Technological Development Zone, Anhui Province Applicant after: Huafu Precision Technology (Ma'anshan) Co., Ltd. Address before: Suzhou City, Jiangsu province 215300 Eagle Kunshan Road Development Zone No. 66 Applicant before: Kunshan Han Ding Feinmetall GmbH |
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Application publication date: 20190910 |