CN107604359A - A kind of corrosion-resistant magnesium alloy process of surface treatment - Google Patents
A kind of corrosion-resistant magnesium alloy process of surface treatment Download PDFInfo
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- CN107604359A CN107604359A CN201710864005.2A CN201710864005A CN107604359A CN 107604359 A CN107604359 A CN 107604359A CN 201710864005 A CN201710864005 A CN 201710864005A CN 107604359 A CN107604359 A CN 107604359A
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- magnesium alloy
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Abstract
The invention discloses a kind of corrosion-resistant magnesium alloy process of surface treatment, belong to technical field of nonferrous metal processing, respectively by following steps：（1）Surface preparation；（2）The preparation of anti oxidation layer；（3）The preparation of etch resistant layer；（4）Surface post-processes.Corrosion-resistant magnesium alloy process of surface treatment of the present invention, low with intractability, process conditions are gentle, the characteristics of easy to operate, and the magnesium alloy after handling has preferable corrosion resistance and certain intensity, provides condition for the popularization and application of magnesium alloy, has preferable application value.
Description
Technical field
The present invention relates to technical field of nonferrous metal processing, and in particular to a kind of corrosion-resistant magnesium alloy process of surface treatment.
Background technology
Density is small because it has for magnesium alloy, and specific strength and rigidity are high, leads radiating and good conductivity, machining property it is good and
Beneficial to recycle etc. excellent properties, be widely used in Aero-Space, communications and transportation, electronic equipment, communication apparatus, military supplies,
The fields such as plant equipment.Because corrosion resistance of the magnesium alloy in acid and neutral environment is poor；Room temperature strength and hardness is low, wearability
Difference, this turns into the key issue for restricting its development and application.It is the effective way for improving its performance to carry out surface to magnesium alloy to be modified
Footpath.Current almost all of surface treatment method all did trial on magnesium alloy.Electrochemical plating production cost is low, operation letter
Easily, the harm but to environment is larger, and offal treatment cost is high, and the adhesion of electrochemical coating and matrix is poor, easily stripping
Fall.Film layer prepared by anodizing technology is loose, porous, it is necessary to could be used after carrying out Seal treatment.Relative to these technologies
For, the equipment that gas phase deposition technology uses is expensive, but the film layer consistency prepared is high, good with basal body binding force, and coating
Species is enriched, and structure design is strong, is provided more choices scheme for the protection of magnesium alloy.
However, because the equilibrium temperature of magnesium alloy is relatively low, the PVD processing to magnesium alloy brings difficulty, it is often more important that
The vapour pressure of magnesium alloy in a vacuum it is high and it is unstable cause coating composition to realize accurate control, and PVD is prepared and set
Standby and process characteristic, which determines, is difficult to surface coating to complex-shaped surface and surface of large-size workpiece.Therefore, find
One kind can reduce Mg alloy surface intractability, and the method that and can effectively improves Properties of Magnesium Alloy is related to the application of magnesium alloy
Promote, there is preferable application value.
The content of the invention
For in the prior art the defects of, it is an object of the invention to provide a kind of corrosion-resistant magnesium alloy process of surface treatment,
Low with intractability, process conditions are gentle, it is easy to operate the characteristics of, and handle after magnesium alloy there is preferable corrosion resistance
With certain intensity, condition is provided for the popularization and application of magnesium alloy, there is preferable application value.
The present invention solves technical problem and adopted the following technical scheme that：
The present invention relates to a kind of corrosion-resistant magnesium alloy process of surface treatment, comprise the following steps：
（1）Surface preparation：Mg alloy surface is subjected to sanding and polishing processing, then oil removal treatment again, then to magnesium alloy
Surface carries out blasting treatment；
（2）The preparation of anti oxidation layer：Anti oxidation layer is coated on the surface of the magnesium alloy Jing Guo surface preparation；
（3）The preparation of etch resistant layer：In step（2）The surface spraying coating etch resistant layer for the magnesium alloy being prepared；
（4）Surface post-processes：Using laser remelting process to step（3）Obtained magnesium alloy carries out sealing pores, is then placed in again
5 ~ 6h is toasted in 200 ~ 220 DEG C of baking ovens, that is, obtains corrosion resistant magnesium alloy materials.
Preferably, the step（1）The method of middle oil removal treatment is that magnesium alloy materials surface is carried out using ethanol first
Cleaning, the watery hydrochloric acid for being again then 1mol/L with concentration are cleaned, then eluted again with clear water.
Preferably, the step（1）The method of middle blasting treatment is to use diamond dust of the particle diameter for 100 ~ 150 mesh, sandblasting
Pressure control is in 0.5 ~ 0.7MPa.
Preferably, the step（2）The method of middle coating anti oxidation layer is to be coated using laser melting coating hair.
Preferably, the step（2）Middle anti oxidation layer is the mixture layer of aluminium and aluminum oxide.
Preferably, the step（3）The painting method of middle etch resistant layer is heat spraying method.
Preferably, the step（3）Middle etch resistant layer is graphene/organic silicon modified polyurethane coating.
Further, the preparation method of the graphene/organic silicon modified polyurethane includes：
（1）Organic silicon modified polyurethane is prepared first；
（2）Then graphene/organic silicon modified polyurethane is prepared, wherein specific method is：Weigh organic silicon modified polyurethane 10 ~
15 parts, and be placed in reactor, acetone is added, is stirring evenly and then adding into 0.01 ~ 0.1 part of graphene, after stirring,
In 40 ~ 60 DEG C, 30 ~ 60min of ultrasonic disperse under Ultrasonic Conditions, the graphene/organic silicon modified polyurethane is produced.
Further, the Adding Way of the graphene is：First by graphene dispersion in acetone, after stirring,
10 ~ 20min of ultrasonic disperse under Ultrasonic Conditions is placed in, mixture is obtained, then adds mixture to modified polyurethane again
In mixed liquor.
Compared with prior art, the present invention has following beneficial effect：
（1）Corrosion-resistant magnesium alloy process of surface treatment of the present invention, low with intractability, process conditions are gentle, operation
The characteristics of facilitating, and the magnesium alloy after processing has preferable corrosion resistance and certain intensity, is the popularization and application of magnesium alloy
Condition is provided, there is preferable application value.
（2）The method of polishing, oil removing, sandblasting is respectively adopted in corrosion-resistant magnesium alloy process of surface treatment of the present invention
The surface of magnesium alloy is pre-processed, the organic attachment for the Mg alloy surface that can effectively go out, be follow-up surface treatment
And the coating of coating provides condition.
（3）Anti oxidation layer, etch resistant layer and table is respectively adopted in corrosion-resistant magnesium alloy process of surface treatment of the present invention
The technological operations such as face post processing, multiple tracks protection is carried out to magnesium alloy materials, not only it is possible to prevente effectively from single corrosion-resistant coating is present
Penetrability corrosion phenomenon, greatly improve the Corrosion Protection of magnesium alloy, also effectively reduce Mg alloy surface processing cost, have
There is preferable application prospect.
（4）The etch resistant layer of corrosion-resistant magnesium alloy process of surface treatment of the present invention is changed using graphene/organosilicon
Property polyurethane, because graphene has unique laminar structured, being layering to form the physical isolation layer of densification so that graphite
Alkene is modified to be prepared/and organic silicon modified polyurethane coating has preferable physical isolation waterproof, corrosion-resisting function, adds
Graphene has excellent mechanical property, and guarantee is provided for the mechanical strength of coating so that coating have preferable scratch-resistant,
The performance of anti-strip, and then the performance of magnesium alloy is improved, extend service life.
Embodiment
With reference to specific embodiment, the present invention is expanded on further.These embodiments are merely to illustrate the present invention and not had to
In limitation the scope of the present invention.The experimental method of unreceipted actual conditions in the following example, generally according to normal condition, such as
Sambrook equimoleculars are cloned：Laboratory manual（New York:Cold Spring Harbor Laboratory Press,
1989）Described in condition, or according to the condition proposed by manufacturer.
Embodiment 1：
A kind of corrosion-resistant magnesium alloy process of surface treatment of the preferred embodiment of the present invention, comprises the following steps：
（1）Surface preparation：Mg alloy surface is subjected to sanding and polishing processing, then oil removal treatment again, then to magnesium alloy
Surface carries out blasting treatment；
（2）The preparation of anti oxidation layer：Anti oxidation layer is coated on the surface of the magnesium alloy Jing Guo surface preparation；
（3）The preparation of etch resistant layer：In step（2）The surface spraying coating etch resistant layer for the magnesium alloy being prepared；
（4）Surface post-processes：Using laser remelting process to step（3）Obtained magnesium alloy carries out sealing pores, is then placed in again
5h is toasted in 210 DEG C of baking ovens, that is, obtains corrosion resistant magnesium alloy materials.
Wherein, the step（1）The method of middle oil removal treatment is carried out clear for first using ethanol to magnesium alloy materials surface
Wash, the watery hydrochloric acid for being again then 1mol/L with concentration cleans, and is then eluted again with clear water.
Wherein, the step（1）The method of middle blasting treatment is to use diamond dust of the particle diameter for 100 mesh, sandblasting air pressure control
System is in 0.6MPa.
Wherein, the step（2）The method of middle coating anti oxidation layer is to be coated using laser melting coating hair.
Wherein, the step（2）Middle anti oxidation layer is the mixture layer of aluminium and aluminum oxide.
Wherein, the step（3）The painting method of middle etch resistant layer is heat spraying method.
Wherein, the step（3）Middle etch resistant layer is graphene/organic silicon modified polyurethane coating.
Further, the preparation method of the graphene/organic silicon modified polyurethane includes：
（1）Organic silicon modified polyurethane is prepared first；
（2）Then graphene/organic silicon modified polyurethane is prepared, wherein specific method is：Weigh organic silicon modified polyurethane 15
Part, and be placed in reactor, acetone is added, 0.05 part of graphene is stirring evenly and then adding into, after stirring, in 50
DEG C, ultrasonic disperse 50min under Ultrasonic Conditions, produce the graphene/organic silicon modified polyurethane.
Further, the Adding Way of the graphene is：First by graphene dispersion in acetone, after stirring,
Ultrasonic disperse 10min under Ultrasonic Conditions is placed in, obtains mixture, then adds mixture to the mixing of modified polyurethane again
In liquid.
Embodiment 2：
A kind of corrosion-resistant magnesium alloy process of surface treatment of the preferred embodiment of the present invention, comprises the following steps：
（1）Surface preparation：Mg alloy surface is subjected to sanding and polishing processing, then oil removal treatment again, then to magnesium alloy
Surface carries out blasting treatment；
（2）The preparation of anti oxidation layer：Anti oxidation layer is coated on the surface of the magnesium alloy Jing Guo surface preparation；
（3）The preparation of etch resistant layer：In step（2）The surface spraying coating etch resistant layer for the magnesium alloy being prepared；
（4）Surface post-processes：Using laser remelting process to step（3）Obtained magnesium alloy carries out sealing pores, is then placed in again
6h is toasted in 200 DEG C of baking ovens, that is, obtains corrosion resistant magnesium alloy materials.
Wherein, the step（1）The method of middle oil removal treatment is carried out clear for first using ethanol to magnesium alloy materials surface
Wash, the watery hydrochloric acid for being again then 1mol/L with concentration cleans, and is then eluted again with clear water.
Wherein, the step（1）The method of middle blasting treatment is to use diamond dust of the particle diameter for 100 mesh, sandblasting air pressure control
System is in 0.5MPa.
Wherein, the step（2）The method of middle coating anti oxidation layer is to be coated using laser melting coating hair.
Wherein, the step（2）Middle anti oxidation layer is the mixture layer of aluminium and aluminum oxide.
Wherein, the step（3）The painting method of middle etch resistant layer is heat spraying method.
Wherein, the step（3）Middle etch resistant layer is graphene/organic silicon modified polyurethane coating.
Further, the preparation method of the graphene/organic silicon modified polyurethane includes：
（1）Organic silicon modified polyurethane is prepared first；
（2）Then graphene/organic silicon modified polyurethane is prepared, wherein specific method is：Weigh organic silicon modified polyurethane 10
Part, and be placed in reactor, acetone is added, 0.01 part of graphene is stirring evenly and then adding into, after stirring, in 40
DEG C, ultrasonic disperse 60min under Ultrasonic Conditions, produce the graphene/organic silicon modified polyurethane.
Further, the Adding Way of the graphene is：First by graphene dispersion in acetone, after stirring,
Ultrasonic disperse 10min under Ultrasonic Conditions is placed in, obtains mixture, then adds mixture to the mixing of modified polyurethane again
In liquid.
Embodiment 3：
A kind of corrosion-resistant magnesium alloy process of surface treatment of the preferred embodiment of the present invention, comprises the following steps：
（1）Surface preparation：Mg alloy surface is subjected to sanding and polishing processing, then oil removal treatment again, then to magnesium alloy
Surface carries out blasting treatment；
（2）The preparation of anti oxidation layer：Anti oxidation layer is coated on the surface of the magnesium alloy Jing Guo surface preparation；
（3）The preparation of etch resistant layer：In step（2）The surface spraying coating etch resistant layer for the magnesium alloy being prepared；
（4）Surface post-processes：Using laser remelting process to step（3）Obtained magnesium alloy carries out sealing pores, is then placed in again
5h is toasted in 220 DEG C of baking ovens, that is, obtains corrosion resistant magnesium alloy materials.
Wherein, the step（1）The method of middle oil removal treatment is carried out clear for first using ethanol to magnesium alloy materials surface
Wash, the watery hydrochloric acid for being again then 1mol/L with concentration cleans, and is then eluted again with clear water.
Wherein, the step（1）The method of middle blasting treatment is to use diamond dust of the particle diameter for 150 mesh, sandblasting air pressure control
System is in 0.7MPa.
Wherein, the step（2）The method of middle coating anti oxidation layer is to be coated using laser melting coating hair.
Wherein, the step（2）Middle anti oxidation layer is the mixture layer of aluminium and aluminum oxide.
Wherein, the step（3）The painting method of middle etch resistant layer is heat spraying method.
Wherein, the step（3）Middle etch resistant layer is graphene/organic silicon modified polyurethane coating.
Further, the preparation method of the graphene/organic silicon modified polyurethane includes：
（1）Organic silicon modified polyurethane is prepared first；
（2）Then graphene/organic silicon modified polyurethane is prepared, wherein specific method is：Weigh organic silicon modified polyurethane 15
Part, and be placed in reactor, acetone is added, is stirring evenly and then adding into 0.1 part of graphene, after stirring, in 60 DEG C,
Ultrasonic disperse 30min under Ultrasonic Conditions, produce the graphene/organic silicon modified polyurethane.
Further, the Adding Way of the graphene is：First by graphene dispersion in acetone, after stirring,
Ultrasonic disperse 20min under Ultrasonic Conditions is placed in, obtains mixture, then adds mixture to the mixing of modified polyurethane again
In liquid.
In summary, corrosion-resistant magnesium alloy process of surface treatment of the present invention, process conditions low with intractability
Gently, the characteristics of easy to operate, and the magnesium alloy after processing has preferable corrosion resistance and certain intensity, is magnesium alloy
Popularization and application provide condition, have preferable application value.
After anti oxidation layer, etch resistant layer and surface is respectively adopted in corrosion-resistant magnesium alloy process of surface treatment of the present invention
The technological operations such as processing, multiple tracks protection is carried out to magnesium alloy materials, not only it is possible to prevente effectively from being passed through existing for single corrosion-resistant coating
Wearing property corrosion phenomenon, greatly improves the Corrosion Protection of magnesium alloy, also effectively reduces Mg alloy surface processing cost, have compared with
Good application prospect.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring the substantive content of the present invention.
Claims (9)
1. a kind of corrosion-resistant magnesium alloy process of surface treatment, it is characterised in that comprise the following steps：
（1）Surface preparation：Mg alloy surface is subjected to sanding and polishing processing, then oil removal treatment again, then to magnesium alloy
Surface carries out blasting treatment；
（2）The preparation of anti oxidation layer：Anti oxidation layer is coated on the surface of the magnesium alloy Jing Guo surface preparation；
（3）The preparation of etch resistant layer：In step（2）The surface spraying coating etch resistant layer for the magnesium alloy being prepared；
（4）Surface post-processes：Using laser remelting process to step（3）Obtained magnesium alloy carries out sealing pores, is then placed in again
5 ~ 6h is toasted in 200 ~ 220 DEG C of baking ovens, that is, obtains corrosion resistant magnesium alloy materials.
2. corrosion-resistant magnesium alloy process of surface treatment according to claim 1, it is characterised in that the step（1）In remove
The method of oil processing is cleans using ethanol to magnesium alloy materials surface first, the dilute salt for being again then 1mol/L with concentration
Acid cleaning, is then eluted with clear water again.
3. corrosion-resistant magnesium alloy process of surface treatment according to claim 1, it is characterised in that the step（1）Middle spray
The method of sand processing is to use diamond dust of the particle diameter for 100 ~ 150 mesh, and sandblasting pressure control is in 0.5 ~ 0.7MPa.
4. corrosion-resistant magnesium alloy process of surface treatment according to claim 1, it is characterised in that the step（2）Middle painting
The method for covering anti oxidation layer is to be coated using laser melting coating hair.
5. corrosion-resistant magnesium alloy process of surface treatment according to claim 1, it is characterised in that the step（2）Moderate resistance
Oxide layer is the mixture layer of aluminium and aluminum oxide.
6. corrosion-resistant magnesium alloy process of surface treatment according to claim 1, it is characterised in that the step（3）Moderate resistance
The painting method of corrosion layer is heat spraying method.
7. corrosion-resistant magnesium alloy process of surface treatment according to claim 1, it is characterised in that the step（3）Moderate resistance
Corrosion layer is graphene/organic silicon modified polyurethane coating.
8. corrosion-resistant magnesium alloy process of surface treatment according to claim 7, it is characterised in that the graphene/organic
The preparation method of silicon modified polyurethane includes：
（1）Organic silicon modified polyurethane is prepared first；
（2）Then graphene/organic silicon modified polyurethane is prepared, wherein specific method is：Weigh organic silicon modified polyurethane 10 ~
15 parts, and be placed in reactor, acetone is added, is stirring evenly and then adding into 0.01 ~ 0.1 part of graphene, after stirring,
In 40 ~ 60 DEG C, 30 ~ 60min of ultrasonic disperse under Ultrasonic Conditions, the graphene/organic silicon modified polyurethane is produced.
9. corrosion-resistant magnesium alloy process of surface treatment according to claim 8, it is characterised in that the addition of the graphene
Method is：First by graphene dispersion in acetone, after stirring, 10 ~ 20min of ultrasonic disperse under Ultrasonic Conditions is placed in,
Mixture is obtained, is then added mixture to again in the mixed liquor of modified polyurethane.
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| CN109291450A (en) * | 2018-09-13 | 2019-02-01 | 中北大学 | A kind of high-performance nano graphene foaming aluminum and preparation method thereof and prepare material |
| CN109797394A (en) * | 2019-03-28 | 2019-05-24 | 河北工业大学 | Anti-corrosion polyaniline/iron composite coating of a kind of Mg alloy surface conduction and preparation method thereof |
| CN111893468A (en) * | 2020-07-05 | 2020-11-06 | 江苏荣企新材料科技有限公司 | Aluminum-magnesium alloy metal frame surface corrosion-resistant treatment process |
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Application publication date: 20180119 |