CN110172700A - A kind of Mg alloy surface treatment fluid and surface treatment method - Google Patents
A kind of Mg alloy surface treatment fluid and surface treatment method Download PDFInfo
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- CN110172700A CN110172700A CN201910563159.7A CN201910563159A CN110172700A CN 110172700 A CN110172700 A CN 110172700A CN 201910563159 A CN201910563159 A CN 201910563159A CN 110172700 A CN110172700 A CN 110172700A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
- C23C22/10—Orthophosphates containing oxidants
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/16—Acidic compositions
- C23F1/22—Acidic compositions for etching magnesium or alloys thereof
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Abstract
The invention discloses a kind of Mg alloy surface treatment fluids, include 20~40g/L of oxidant, 75~125g/L of phosphate, 10~30g/L of acylate, solvent is water, which also includes pH adjusting agent.The invention also discloses a kind of surface treatment method of Mg alloy comprising the steps of: pre-treatment, alkali cleaning processing, pickling processes, roughening treatment, protection processing.Using the present invention treated it is used for magnesium alloy in production with plastics, rubber, coating, Ceramic Composite composite material of magnesium alloy.
Description
Technical field
The present invention relates to field of metal surface treatment more particularly to a kind of Mg alloy surface treatment fluid and surface treatment sides
Method.
Background technique
Magnesium alloy is one of common metal material in industry, with light weight, intensity is high, rigidity is good, be easy to cast,
The features such as resistance to organic matter and caustic corrosion, what use was most wide at present is magnesium alloy.Nowadays the exploitation of composite material is used and is increasingly flowed
The advantages of going, can not only having played different materials simultaneously, but also can cover the shortage mutually, therefore be increasingly appearing in people
Life in.Magnesium alloy can be used as the substrate applications of composite material to multiple fields, such as produce in computer, mobile phone electronics
Magnesium plastic composite materials are used on product, heat dissipation can be improved, and increase intensity；It can protected using composite material of magnesium alloy in the car
Mitigate weight significantly on the basis of card usability.
In order to expand the use scope of magnesium alloy, the type of composite material of magnesium alloy is also being continuously increased, however compound
The problem of will appear magnesium alloy poor with other materials associativity, entirety poor air-tightness in material preparation process, especially when magnesium closes
When the Material claddings such as golden and some poor fluidities plastic cement, ceramics, Teflon coating, this problem is then even more serious.
Summary of the invention
To solve the above-mentioned problems, the first aspect of the present invention provides a kind of Mg alloy surface treatment fluid, includes oxidation
20~40g/L of agent, 75~125g/L of phosphate, 10~30g/L of acylate, solvent are water；The Mg alloy surface treatment fluid
It also include pH adjusting agent.
As a kind of perferred technical scheme, the pH of the Mg alloy surface treatment fluid is 1~3.
As a kind of perferred technical scheme, the oxidant is inorganic oxygen-containing compound.
As a kind of perferred technical scheme, the inorganic oxygen-containing compound is selected from potassium permanganate, potassium chlorate, perchloric acid
One of sodium, sodium dichromate, sodium nitrate or a variety of mixing.
As a kind of perferred technical scheme, the phosphate is selected from sodium phosphate, potassium phosphate, disodium-hydrogen, di(2-ethylhexyl)phosphate
One of hydrogen sodium, potassium phosphate,monobasic, potassium dihydrogen phosphate or a variety of mixing.
As a kind of perferred technical scheme, the acylate be selected from acetate, formates, citrate, sulfonate,
One of sulfinate, tartrate or a variety of mixing.
As a kind of perferred technical scheme, the pH adjusting agent is in acetic acid, citric acid, malic acid, tartaric acid
One or more mixing.
The second aspect of the present invention provides a kind of Mg alloy surface processing side using above-mentioned Mg alloy surface treatment fluid
Method comprising the steps of:
A. it pre-treatment: after Mg alloy surface is polished using sand paper, through distillation washing, ultrasonic wave washes of absolute alcohol, steams
Distilled water is washed, and is then dried up；
B. alkali cleaning is handled: the magnesium alloy that step a is obtained carries out alkali cleaning, then washes；
C. pickling processes: the magnesium alloy that step b is obtained carries out pickling, then washes；
D. roughening treatment: the magnesium alloy that step c is obtained is handled using above-mentioned Mg alloy surface treatment fluid, then water
It washes；
E. protection is handled: the magnesium alloy that step d is obtained is handled using magnesium alloy protective agent, is then washed, is dried up,
Mg alloy surface processing is completed.
The third aspect of the present invention provides the magnesium alloy after a kind of surface treatment, is using above-mentioned Mg alloy surface
What processing method was handled.
The fourth aspect of the present invention provides a kind of composite material of magnesium alloy, is closed with the magnesium after above-mentioned surface treatment
Gold is matrix, with composite material of magnesium alloy made from plastics, rubber, coating, Ceramic Composite.
The utility model has the advantages that a kind of Mg alloy surface treatment fluid provided by the invention and surface treatment method can be in magnesium alloy gold
Metal surface forms equally distributed aperture, will treated magnesium alloy as substrate, with other materials compound tense, available knot
The composite material of magnesium alloy that resultant force is strong, air-tightness is good, when the material compound with magnesium alloy is the plastic cement, ceramics, iron of poor fluidity
When the materials such as fluorine long paint, which still has excellent using effect.
Detailed description of the invention
In order to further explain a kind of Mg alloy surface treatment fluid and surface treatment method provided in the present invention
Beneficial effect provides corresponding attached drawing, it is pointed out that attached drawing provided in the present invention is to elect in all attached drawings
Individual examples, purpose is also not as limitations on the claims, its all obtained by attached drawing provided herein
His corresponding map is equal it is believed that within the scope of the application protection.
Fig. 1 is the effect that the embodiment of the present application 2 is used for Mg alloy surface processing, and legend is 10.0 μm.
Fig. 2 is the effect that the embodiment of the present application 2 is used for Mg alloy surface processing, and legend is 1.00 μm.
Specific embodiment
In conjunction with preferred implementation method of the invention below detailed description and including embodiment can be further understood that this hair
Bright content.Unless otherwise indicated, all technologies used herein and scientific term all have general with the application fields
Logical technical staff's is generally understood identical meaning.If mentioned in the definition and the application of the concrete term disclosed in the prior art
Any definition supplied is inconsistent, then term provided herein of being subject to defines.
It is used in the present context, unless being clearly dictated in context, otherwise without the spy of the single plural form of restriction
Sign is also intended to the feature including plural form.It will also be appreciated that term as used herein " by ... preparation " it is synonymous with "comprising",
" comprising ", " including ", " having ", "comprising" and/or " including " indicate stated group when used in this manual
Object, step, method, product or device are closed, but does not preclude the presence or addition of one or more of the other composition, step, method, system
Product or device.In addition, using " preferred ", " preferably ", " preferred " etc. to be when describing presently filed embodiment
Refer to, can provide the embodiment of the present invention of certain beneficial effects in some cases.However, under identical circumstances or other feelings
Under condition, other embodiments are also likely to be preferred.In addition to this, not dark to the statement of one or more preferred embodiments
Show that other embodiments are unavailable, is also not intended to exclude other embodiments except the scope of the present invention.
To solve the above-mentioned problems, the first aspect of the present invention provides a kind of Mg alloy surface treatment fluid, includes oxidation
20~40g/L of agent, 75~125g/L of phosphate, 10~30g/L of acylate, solvent are water；The Mg alloy surface treatment fluid
It also include pH adjusting agent.
In some preferred embodiments, the Mg alloy surface treatment fluid includes oxidant 30g/L, phosphate
100g/L, acylate 20g/L, solvent are water；The Mg alloy surface treatment fluid also includes pH adjusting agent.
Oxidant
Oxidant in the application can react with magnesium metal, form one layer of fine and close oxidation in Mg alloy surface
Film slows down corrosion of the surface treatment liquid to Mg alloy surface, and finally formed Mg alloy surface is made to have uniform micro.
In some preferred embodiments, the oxidant is inorganic oxygen-containing compound.
In some embodiments, it is high can to enumerate hydrogen peroxide, sodium peroxide, potassium peroxide for the inorganic oxygen-containing compound
Sodium chlorate, potassium hyperchlorate, Peracetic acid, potassium bichromate, sodium dichromate, sodium chlorate, potassium chlorate, chromic acid, nitric acid, sodium nitrate, height
Potassium manganate, ammonium persulfate.
In some preferred embodiments, the inorganic oxygen-containing compound is selected from potassium permanganate, potassium chlorate, perchloric acid
One of sodium, sodium dichromate, sodium nitrate or a variety of mixing；It is further preferred that the inorganic oxygen-containing compound is selected from height
One of potassium manganate, sodium perchlorate, sodium nitrate or a variety of mixing；Further, the inorganic oxygen-containing compound is height
Potassium manganate.
Phosphate
In conjunction with the magnesium ion that phosphate in the application can be dissolved out with Mg alloy surface, magnesium phosphate precipitation is generated simultaneously
It is deposited in Mg alloy surface, fills up the hole on oxidation film, reduce corrosion of the hydrogen ion in solution to magnesium alloy, and assist it
Uniform micropore is manufactured on surface.
In some preferred embodiments, the phosphate is selected from sodium phosphate, potassium phosphate, disodium-hydrogen, di(2-ethylhexyl)phosphate
One of hydrogen sodium, potassium phosphate,monobasic, potassium dihydrogen phosphate or a variety of mixing；It is further preferred that the phosphate is phosphoric acid
Sodium.
Acylate
Organic acid is mostly weak acid, in water incomplete ionization, and the acylate in the application ionizes out organic in water
Acid ion can be used as the buffer of pH variation, improve the storage stability and stability in use of Mg alloy surface treatment fluid.
In some preferred embodiments, the acylate be selected from acetate, formates, citrate, sulfonate,
One of sulfinate, tartrate or a variety of mixing；It is further preferred that the acylate be acetate and/or
Citrate.
In some preferred embodiments, the acetate is selected from one of sodium acetate, potassium acetate, ammonium acetate or more
The mixing of kind；It is further preferred that the acetate is sodium acetate.
In some preferred embodiments, the citrate is in sodium citrate, potassium citrate, ammonium citrate
One or more mixing；It is further preferred that the citrate is sodium citrate.
PH adjusting agent
PH adjusting agent in the application provides the main matter of corrosion Mg alloy surface, i.e. hydrogen ion.
In some embodiments, the pH adjusting agent be organic acid, the organic acid can enumerate formic acid, acetic acid, oxalic acid,
Citric acid, malic acid, tartaric acid, ascorbic acid, salicylic acid.
In some preferred embodiments, the pH adjusting agent is in acetic acid, citric acid, malic acid, tartaric acid
One or more mixing；It is further preferred that the pH adjusting agent is acetic acid and/or citric acid；Further, the pH
Regulator is acetic acid.
In some preferred embodiments, the pH of the Mg alloy surface treatment fluid is 1~3；It is further preferred that institute
The pH for stating Mg alloy surface treatment fluid is 2.
In some preferred embodiments, the oxidant and phosphatic mass concentration ratio are 1:(2~4)；Into one
Step is preferred, and the oxidant and phosphatic mass concentration ratio are 1:3.
Since magnesium is a kind of extremely active metal, the surface treatment of magnesium alloy is often difficult to control, and is especially being used
It when acidic treatment liquid, has a large amount of hydrogen and generates, production security is difficult to ensure, and Mg alloy surface corrosion is extremely serious.Shen
It asks someone to find, oxidant and phosphate are added in surface treatment liquid can control corrosion reaction, especially centainly to compare
When example addition, Mg alloy surface can leave arrangement that treated uniformly, the lesser micropore of opening, carrying out, subsequent magnesium alloy is compound
When the manufacture of material, these micropores can make have riveted power between magnesium alloy and other materials, enhance between different materials
Adhesion property and material entirety air-tightness.Oxidant, which acts on Mg alloy surface, can leave oxidation film, and phosphate then stays
Lower phosphoric acid deposit of magnesium, the two make Mg alloy surface form one layer of composite protection film, have completely cut off in treatment fluid under acting synergistically
The direct of other metals reacts in hydrogen ion and magnesium metal or alloy, slows down corrosive effect, and magnesia, hydrogen in protective film
Magnesia etc. may continue to liquid to be treated dissolution, finally generate uniform micropore, furthermore pH value represents hydrogen ion in treatment fluid
Concentration, the influence no less important to corrosion reaction.
In some embodiments, for preparing 1L solution, the preparation method of the Mg alloy surface treatment fluid includes
Following steps: 20~40g of oxidant, 75~125g of phosphate, 10~30g of acylate are weighed, is dissolved in 600mL water, adds
Add pH adjusting agent to adjust pH value of solution to after 1~3, solution is complemented into 1L.
In some preferred embodiments, for preparing 1L solution, the preparation side of the Mg alloy surface treatment fluid
Method, which comprises the steps of:, weighs oxidant 30g, phosphate 100g, acylate 20g, is dissolved in 600mL water, adds pH tune
It saves agent and adjusts pH value of solution to after 2, solution is complemented into 1L.
The second aspect of the present invention provides a kind of Mg alloy surface processing side using above-mentioned Mg alloy surface treatment fluid
Method comprising the steps of:
A. it pre-treatment: after Mg alloy surface is polished using sand paper, through distillation washing, ultrasonic wave washes of absolute alcohol, steams
Distilled water is washed, and is then dried up；
B. alkali cleaning is handled: the magnesium alloy that step a is obtained carries out alkali cleaning, then washes；
C. pickling processes: the magnesium alloy that step b is obtained carries out pickling, then washes；
D. roughening treatment: the magnesium alloy that step c is obtained is handled using above-mentioned Mg alloy surface treatment fluid, then water
It washes；
E. protection is handled: the magnesium alloy that step d is obtained is handled using magnesium alloy protective agent, is then washed, is dried up,
Mg alloy surface processing is completed.
In some preferred embodiments, the surface treatment method of Mg alloy comprising the steps of:
A. it pre-treatment: after Mg alloy surface is polished using sand paper, through distillation washing, ultrasonic wave washes of absolute alcohol, steams
Distilled water is washed, and is then dried up；
B. alkali cleaning is handled: the magnesium alloy that step a is obtained carries out alkali cleaning, and lye is the NaOH solution of concentration 40g/L, processing
Time is 10min, is then washed；
C. pickling processes: the magnesium alloy that step b is obtained carries out pickling, and acid solution is the phosphoric acid solution of mass fraction 10%,
The processing time is 30s, is then washed；
D. roughening treatment: the magnesium alloy that step c is obtained is handled using above-mentioned Mg alloy surface treatment fluid, processing temperature
Degree is 50 DEG C, and the processing time is 2min, is then washed；
E. protection is handled: the magnesium alloy that step d is obtained being handled using magnesium alloy protective agent, protective agent is concentration
The ammonium metavanadate solution of 5g/L, treatment temperature are 45 DEG C, and the processing time is 45s, is then washed, and are dried up, Mg alloy surface processing
It completes.
It has been found that can be further improved magnesium alloy and other after handling using ammonium metavanadate magnesium alloy
Binding force between material works as magnesium alloy, which is because, ammonium metavanadate can form nitrogenous organic transformation film in micropore surface
When composite material is made, not only there is physics riveted power between magnesium alloy and other materials, be also provided with Chemical bonding, therefore
Improve the binding force and air-tightness of composite material of magnesium alloy.
The third aspect of the present invention provides the magnesium alloy after a kind of surface treatment, is using above-mentioned Mg alloy surface
What processing method was handled.
The fourth aspect of the present invention provides a kind of composite material of magnesium alloy, is closed with the magnesium after above-mentioned surface treatment
Gold is matrix, with composite material of magnesium alloy made from plastics, rubber, coating, Ceramic Composite.
Embodiment
Technical solution of the present invention is described in detail by the following examples, but protection scope of the present invention is not limited to
In the embodiment.Raw material use herein is unless otherwise specified commercially available.
Embodiment 1
Embodiment 1 provides a kind of Mg alloy surface treatment fluid, includes oxidant 20g/L, phosphate 75g/L, organic acid
Salt 10g/L, solvent are water；
The Mg alloy surface treatment fluid also includes pH adjusting agent；
The pH of the Mg alloy surface treatment fluid is 2；
The oxidant is inorganic oxygen-containing compound, and the inorganic oxygen-containing compound is potassium permanganate (No. CAS: 7722-
64-7)；
The phosphate is sodium phosphate (No. CAS: 7601-54-9)；
The acylate is acetate, and the acetate is sodium acetate (No. CAS: 127-09-3)；
The pH adjusting agent is acetic acid (No. CAS: 64-19-7).
This example additionally provides the preparation method of above-mentioned Mg alloy surface treatment fluid comprising the steps of: prepares 1L solution, claims
Oxidant 30g, phosphate 100g, acylate 20g are taken, is dissolved in 600mL water, addition pH adjusting agent adjusts pH value of solution to 2
Afterwards, solution is complemented into 1L.
This example additionally provides a kind of surface treatment method of Mg alloy using above-mentioned Mg alloy surface treatment fluid, comprising following
Step:
A. it pre-treatment: after Mg alloy surface is polished using sand paper, through distillation washing, ultrasonic wave washes of absolute alcohol, steams
Distilled water is washed, and is then dried up；
B. alkali cleaning is handled: the magnesium alloy that step a is obtained carries out alkali cleaning, and lye is the NaOH solution of concentration 40g/L, processing
Time is 10min, is then washed；
C. pickling processes: the magnesium alloy that step b is obtained carries out pickling, and acid solution is the phosphoric acid solution of mass fraction 10%,
The processing time is 30s, is then washed；
D. roughening treatment: the magnesium alloy that step c is obtained is handled using above-mentioned Mg alloy surface treatment fluid, processing temperature
Degree is 50 DEG C, and the processing time is 2min, is then washed；
E. protection is handled: the magnesium alloy that step d is obtained being handled using magnesium alloy protective agent, protective agent is concentration
The ammonium metavanadate solution of 5g/L, treatment temperature are 45 DEG C, and the processing time is 45s, is then washed, and are dried up, Mg alloy surface processing
It completes.
The magnesium alloy is AZ91D magnesium alloy.
Embodiment 2
Embodiment 2 provides a kind of Mg alloy surface treatment fluid, includes oxidant 40g/L, phosphate 125g/L, organic acid
Salt 30g/L, solvent are water；
The Mg alloy surface treatment fluid also includes pH adjusting agent；
The pH of the Mg alloy surface treatment fluid is 2；
The oxidant is inorganic oxygen-containing compound, and the inorganic oxygen-containing compound is potassium permanganate；
The phosphate is sodium phosphate；
The acylate is acetate, and the acetate is sodium acetate；
The pH adjusting agent is acetic acid.
This example additionally provides the preparation method of above-mentioned Mg alloy surface treatment fluid, similar to Example 1.
This example additionally provides a kind of surface treatment method of Mg alloy using above-mentioned Mg alloy surface treatment fluid, with implementation
Example 1 is similar.
Embodiment 3
Embodiment 3 provides a kind of Mg alloy surface treatment fluid, includes oxidant 30g/L, phosphate 100g/L, organic acid
Salt 20g/L, solvent are water；
The Mg alloy surface treatment fluid also includes pH adjusting agent；
The pH of the Mg alloy surface treatment fluid is 2；
The oxidant is inorganic oxygen-containing compound, and the inorganic oxygen-containing compound is potassium permanganate；
The phosphate is sodium phosphate；
The acylate is acetate, and the acetate is sodium acetate；
The pH adjusting agent is acetic acid.
This example additionally provides the preparation method of above-mentioned Mg alloy surface treatment fluid, similar to Example 1.
This example additionally provides a kind of surface treatment method of Mg alloy using above-mentioned Mg alloy surface treatment fluid, with implementation
Example 1 is similar.
Embodiment 4
Embodiment 4 provides a kind of Mg alloy surface treatment fluid, includes oxidant 30g/L, phosphate 100g/L, organic acid
Salt 20g/L, solvent are water；
The Mg alloy surface treatment fluid also includes pH adjusting agent；
The pH of the Mg alloy surface treatment fluid is 2；
The oxidant is inorganic oxygen-containing compound, and the inorganic oxygen-containing compound is sodium perchlorate (No. CAS: 7601-
89-0)；
The phosphate is sodium phosphate；
The acylate is acetate, and the acetate is sodium acetate；
The pH adjusting agent is acetic acid.
This example additionally provides the preparation method of above-mentioned Mg alloy surface treatment fluid, similar to Example 1.
This example additionally provides a kind of surface treatment method of Mg alloy using above-mentioned Mg alloy surface treatment fluid, with implementation
Example 1 is similar.
Embodiment 5
Embodiment 5 provides a kind of Mg alloy surface treatment fluid, includes oxidant 30g/L, phosphate 100g/L, organic acid
Salt 20g/L, solvent are water；
The Mg alloy surface treatment fluid also includes pH adjusting agent；
The pH of the Mg alloy surface treatment fluid is 2；
The oxidant is inorganic oxygen-containing compound, and the inorganic oxygen-containing compound is potassium permanganate；
The phosphate is potassium phosphate (No. CAS: 7778-53-2)；
The acylate is acetate, and the acetate is sodium acetate；
The pH adjusting agent is acetic acid.
This example additionally provides the preparation method of above-mentioned Mg alloy surface treatment fluid, similar to Example 1.
This example additionally provides a kind of surface treatment method of Mg alloy using above-mentioned Mg alloy surface treatment fluid, with implementation
Example 1 is similar.
Embodiment 6
Embodiment 6 provides a kind of Mg alloy surface treatment fluid, includes oxidant 30g/L, phosphate 100g/L, organic acid
Salt 20g/L, solvent are water；
The Mg alloy surface treatment fluid also includes pH adjusting agent；
The pH of the Mg alloy surface treatment fluid is 2；
The oxidant is inorganic oxygen-containing compound, and the inorganic oxygen-containing compound is potassium permanganate；
The phosphate is disodium-hydrogen (No. CAS: 7558-79-4)；
The acylate is acetate, and the acetate is sodium acetate；
The pH adjusting agent is acetic acid.
This example additionally provides the preparation method of above-mentioned Mg alloy surface treatment fluid, similar to Example 1.
This example additionally provides a kind of surface treatment method of Mg alloy using above-mentioned Mg alloy surface treatment fluid, with implementation
Example 1 is similar.
Embodiment 7
Embodiment 7 provides a kind of Mg alloy surface treatment fluid, includes oxidant 30g/L, phosphate 100g/L, organic acid
Salt 20g/L, solvent are water；
The Mg alloy surface treatment fluid also includes pH adjusting agent；
The pH of the Mg alloy surface treatment fluid is 2；
The oxidant is inorganic oxygen-containing compound, and the inorganic oxygen-containing compound is potassium permanganate；
The phosphate is sodium phosphate；
The acylate is acetate, and the acetate is potassium acetate (No. CAS: 127-08-2)；
The pH adjusting agent is citric acid (No. CAS: 77-92-9).
This example additionally provides the preparation method of above-mentioned Mg alloy surface treatment fluid, similar to Example 1.
This example additionally provides a kind of surface treatment method of Mg alloy using above-mentioned Mg alloy surface treatment fluid, with implementation
Example 1 is similar.
Embodiment 8
Embodiment 8 provides a kind of Mg alloy surface treatment fluid, includes oxidant 30g/L, phosphate 100g/L, organic acid
Salt 20g/L, solvent are water；
The Mg alloy surface treatment fluid also includes pH adjusting agent；
The pH of the Mg alloy surface treatment fluid is 1；
The oxidant is inorganic oxygen-containing compound, and the inorganic oxygen-containing compound is potassium permanganate；
The phosphate is sodium phosphate；
The acylate is acetate, and the acetate is sodium acetate；
The pH adjusting agent is acetic acid.
This example additionally provides the preparation method of above-mentioned Mg alloy surface treatment fluid comprising the steps of: prepares 1L solution, claims
Oxidant 30g, phosphate 100g, acylate 20g are taken, is dissolved in 600mL water, addition pH adjusting agent adjusts pH value of solution to 1
Afterwards, solution is complemented into 1L.
This example additionally provides a kind of surface treatment method of Mg alloy using above-mentioned Mg alloy surface treatment fluid, with implementation
Example 1 is similar.
Embodiment 9
Embodiment 9 provides a kind of Mg alloy surface treatment fluid, includes oxidant 30g/L, phosphate 100g/L, organic acid
Salt 20g/L, solvent are water；
The Mg alloy surface treatment fluid also includes pH adjusting agent；
The pH of the Mg alloy surface treatment fluid is 3；
The oxidant is inorganic oxygen-containing compound, and the inorganic oxygen-containing compound is potassium permanganate；
The phosphate is sodium phosphate；
The acylate is acetate, and the acetate is sodium acetate；
The pH adjusting agent is acetic acid.
This example additionally provides the preparation method of above-mentioned Mg alloy surface treatment fluid comprising the steps of: prepares 1L solution, claims
Oxidant 30g, phosphate 100g, acylate 20g are taken, is dissolved in 600mL water, addition pH adjusting agent adjusts pH value of solution to 3
Afterwards, solution is complemented into 1L.
This example additionally provides a kind of surface treatment method of Mg alloy using above-mentioned Mg alloy surface treatment fluid, with implementation
Example 1 is similar.
Embodiment 10
Embodiment 10 provides a kind of Mg alloy surface treatment fluid, includes oxidant 10g/L, phosphate 50g/L, organic acid
Salt 20g/L, solvent are water；
The Mg alloy surface treatment fluid also includes pH adjusting agent；
The pH of the Mg alloy surface treatment fluid is 2；
The oxidant is inorganic oxygen-containing compound, and the inorganic oxygen-containing compound is potassium permanganate；
The phosphate is sodium phosphate；
The acylate is acetate, and the acetate is sodium acetate；
The pH adjusting agent is acetic acid.
This example additionally provides the preparation method of above-mentioned Mg alloy surface treatment fluid, similar to Example 1.
This example additionally provides a kind of surface treatment method of Mg alloy using above-mentioned Mg alloy surface treatment fluid, with implementation
Example 1 is similar.
Embodiment 11
Embodiment 11 provides a kind of Mg alloy surface treatment fluid, comprising oxidant 30g/L, phosphate 150g/L, organic
Hydrochlorate 20g/L, solvent are water；
The Mg alloy surface treatment fluid also includes pH adjusting agent；
The pH of the Mg alloy surface treatment fluid is 2；
The oxidant is inorganic oxygen-containing compound, and the inorganic oxygen-containing compound is potassium permanganate；
The phosphate is sodium phosphate；
The acylate is acetate, and the acetate is sodium acetate；
The pH adjusting agent is acetic acid.
This example additionally provides the preparation method of above-mentioned Mg alloy surface treatment fluid, similar to Example 1.
This example additionally provides a kind of surface treatment method of Mg alloy using above-mentioned Mg alloy surface treatment fluid, with implementation
Example 1 is similar.
Embodiment 12
Embodiment 12 provides a kind of Mg alloy surface treatment fluid, comprising oxidant 50g/L, phosphate 100g/L, organic
Hydrochlorate 20g/L, solvent are water；
The Mg alloy surface treatment fluid also includes pH adjusting agent；
The pH of the Mg alloy surface treatment fluid is 2；
The oxidant is inorganic oxygen-containing compound, and the inorganic oxygen-containing compound is potassium permanganate；
The phosphate is sodium phosphate；
The acylate is acetate, and the acetate is sodium acetate；
The pH adjusting agent is acetic acid.
This example additionally provides the preparation method of above-mentioned Mg alloy surface treatment fluid, similar to Example 1.
This example additionally provides a kind of surface treatment method of Mg alloy using above-mentioned Mg alloy surface treatment fluid, with implementation
Example 1 is similar.
Performance evaluation
Performance evaluation is carried out to the magnesium alloy after the obtained surface treatment of embodiment 1~12, Appreciation gist is magnesium alloy
The SEM photograph on surface, evaluation content are the average pore size and average hole depth of Mg alloy surface micropore, the results are shown in Table 1.
Table 1
| Example | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| Aperture/μm | 70 | 25 | 55 | 60 | 55 | 65 | 65 | 180 | 30 | 450 | 10 | 160 |
| Hole depth/μm | 60 | 20 | 50 | 50 | 50 | 55 | 50 | 160 | 25 | 425 | 10 | 150 |
By comparative example 1~12 it is known that Mg alloy surface treatment fluid provided by the invention and surface treatment side
Method can leave a large amount of uniform micros in Mg alloy surface, and then can be improved magnesium alloy as composite material base and other materials
Binding force between material expands the use scope of magnesium alloy materials.
At last it is pointed out that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not intended to limit the invention, it is all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in protection model of the invention within the spirit and principle of invention
Within enclosing.
Claims (10)
1. a kind of Mg alloy surface treatment fluid, which is characterized in that comprising 20~40g/L of oxidant, 75~125g/L of phosphate, have
Machine 10~30g/L of hydrochlorate, solvent are water；
The Mg alloy surface treatment fluid also includes pH adjusting agent.
2. Mg alloy surface treatment fluid as described in claim 1, which is characterized in that the pH of the Mg alloy surface treatment fluid is
1~3.
3. Mg alloy surface treatment fluid as described in claim 1, which is characterized in that the oxidant is inorganic oxygen-containing chemical combination
Object.
4. Mg alloy surface treatment fluid as claimed in claim 3, which is characterized in that the inorganic oxygen-containing compound is selected from Gao Meng
One of sour potassium, potassium chlorate, sodium perchlorate, sodium dichromate, sodium nitrate or a variety of mixing.
5. Mg alloy surface treatment fluid as described in claim 1, which is characterized in that the phosphate is selected from sodium phosphate, phosphoric acid
One of potassium, disodium-hydrogen, sodium dihydrogen phosphate, potassium phosphate,monobasic, potassium dihydrogen phosphate or a variety of mixing.
6. Mg alloy surface treatment fluid as described in claim 1, which is characterized in that the acylate is selected from acetate, first
One of hydrochlorate, citrate, sulfonate, sulfinate, tartrate or a variety of mixing.
7. Mg alloy surface treatment fluid as described in claim 1, which is characterized in that the pH adjusting agent is selected from acetic acid, lemon
One of acid, malic acid, tartaric acid or a variety of mixing.
8. a kind of surface treatment method of Mg alloy using the Mg alloy surface treatment fluid as described in any one of claim 1~7,
It is characterized in that comprising the steps of:
A. pre-treatment: after Mg alloy surface is polished using sand paper, through distillation washing, ultrasonic wave washes of absolute alcohol, distilled water
It washes, then dries up；
B. alkali cleaning is handled: the magnesium alloy that step a is obtained carries out alkali cleaning, then washes；
C. pickling processes: the magnesium alloy that step b is obtained carries out pickling, then washes；
D. roughening treatment: the magnesium alloy that step c is obtained uses at Mg alloy surface as described in any one of claims 1 to 7
Reason liquid is handled, and is then washed；
E. protection is handled: the magnesium alloy that step d is obtained being handled using magnesium alloy protective agent, is then washed, is dried up, magnesium closes
Golden watch surface treatment is completed.
9. the magnesium alloy after a kind of surface treatment, which is characterized in that it is using at Mg alloy surface as claimed in claim 8
Reason method is handled.
10. a kind of composite material of magnesium alloy, which is characterized in that it is closed with the magnesium after being surface-treated as claimed in claim 9
Gold is matrix, with composite material of magnesium alloy made from plastics, rubber, coating, Ceramic Composite.
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Cited By (1)
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| CN114232000A (en) * | 2021-12-16 | 2022-03-25 | 深圳市纳明特科技发展有限公司 | Titanium alloy surface treatment process |
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