CN106894013A - A kind of preparation method of Mg alloy surface silane treatment corrosion-resistant finishes - Google Patents
A kind of preparation method of Mg alloy surface silane treatment corrosion-resistant finishes Download PDFInfo
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- CN106894013A CN106894013A CN201710152281.6A CN201710152281A CN106894013A CN 106894013 A CN106894013 A CN 106894013A CN 201710152281 A CN201710152281 A CN 201710152281A CN 106894013 A CN106894013 A CN 106894013A
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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
- C23C22/68—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 solutions with pH between 6 and 8
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/02—Inorganic materials
- A61L27/04—Metals or alloys
- A61L27/047—Other specific metals or alloys not covered by A61L27/042 - A61L27/045 or A61L27/06
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/28—Materials for coating prostheses
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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
- C23C22/73—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 characterised by the process
-
- 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
- C23C22/78—Pretreatment of the material to be coated
-
- 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
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/20—Use of solutions containing silanes
Abstract
The present invention relates to a kind of preparation method of Mg alloy surface silane treatment corrosion-resistant coating, belong to the technical field of surface of metal material.The method of the invention includes：Grinding process first is carried out to Mg alloy surface, the pretreatment of alkali cleaning and pickling is then carried out, silane film is formed by self assembly mode in Mg alloy surface using silane coupler hydrolysis, prepare the organosilane coating of uniform ground.Specifically include：The preparation of solution of silane, the preparation of Acidwash solution, the preparation of soda-wash solution, the pretreatment of sample and the preparation of coating.Compared with prior art, the preparation method of coating of the invention is simple to operate, convenient, and cost is relatively low, the coating uniform prepared, smooth, can effectively improve the corrosion resisting property of matrix.
Description
Technical field
The present invention is a kind of preparation method of the anticorrosive protective coating of magnesium alloy, belongs to the process for treating surface of metal material
Field.
Background technology
Magnesium and its alloy have excellent mechanical property, low, the high specific strength of density and specific stiffness, intensity and people due to it
The advantages of bone electromagnetic wave shielding is excellent and is easily recycled, it has a wide range of applications in fields such as aviation, automobile, communications.
Meanwhile, its density is similar with people's bone photo with intensity, can be effectively prevented from " stress shielding " phenomenon, promotes bone healing and life
It is long, therefore, magnesium alloy is also very promising in biological field.But, because magnesium alloy property is more active, easily in majority
There is galvanic corrosion as anode under environment, influence its application in all fields.Accordingly, it would be desirable to be carried out at surface to magnesium alloy
, there is galvanic corrosion behavior as anode to it and protect in reason.Mainly have for the corrosion protection method of magnesium alloy at present：Sun
The side such as pole oxidation processes, differential arc oxidation treatment, chemical vapor deposition, physical vapour deposition (PVD), chemical plating, plating and chemical composition coating
Method.Wherein, differential arc oxidation and anodic oxidation needs equipment complex, and the coating of preparation is more coarse, crackle, micropore etc. occurs
Defect；Chemical and physical vapor deposition process then needs high temperature, and equipment is complex, and process costs are higher；Chemistry
Although plating and electroplating technology process are relatively simple, environment would generally be polluted；And in chemical composition coating in technical process
Need to use hexavalent chromium, belong to heavy metal ion, with toxicity, there is pollution to environment, treatment cost of waste liquor is also relatively
It is high.
Silane coupler is most widely used class coupling agent, is that a class has the low molecule of special construction siliconated
Compound.Silane coupler can interact with the long chain in the hydroxyl and organic polymer in inorganic matter, make two kinds not
Connatural material coupling is got up, so as to improve the various performances of biomaterial.It is used for the application in terms of metal erosion protection,
The hydroxy combining of generation silanol and metal surface is mainly hydrolyzed by silane coupler, coating is formed, its corrosion resistance is improved.
The biocompatibility on surface can be not only improved using the mode of the self assembly of chemical group, while can also control
The corrosion rate of matrix.Generally, can be used for the molecule of self assembly has silane, phosphoric acid, carboxylic acid and dopamine.By party's legal system
It is typically more uniform, smooth for the coating for going out, contact of the matrix with corrosive medium can be effectively isolated, so that it is anti-corrosion to improve its
Performance.
The content of the invention
The present invention is just being directed to above-mentioned prior art scenario and is designing there is provided a kind of Mg alloy surface silane treatment corrosion resistant
The preparation method of erosion resisting coating, the purpose is to be the erosion-resisting ability for effectively improving magnesium alloy.
What above-mentioned purpose of the invention was achieved through the following technical solutions：
The preparation method of the anticorrosive protective coating of this kind of magnesium alloy, including surface preparation, coating to magnesium alloy substrate
Preparation and the postprocessing working procedures to coating, it is characterised in that：First Mg alloy surface is polished, alkali cleaning, pickling carries out pre-
Treatment, coating is prepared and forms organic silane film layer in magnesium alloy by self assembly mode under room temperature environment.
The preparation method of the anticorrosive protective coating of above-mentioned magnesium alloy specifically includes following steps：
The preparation of A, solution of silane：The aqueous solution that alcohol water ratio is 9-1/9, Silane coupling agent KH550 is 2-14% is prepared,
It is stand-by after standing 6-24 hours；
The preparation of B, Acidwash solution：It is the acetic acid solution of 19.2g/L to prepare mass concentration, and is added thereto to 50g/L's
Potassium nitrate, is made into the solution of transparent clarification；
The preparation of C, soda-wash solution：It is the sodium hydroxide solution of 20g/L to prepare mass concentration, and is sequentially added thereto
50g/L and 25g/L sodium metasilicate and tertiary sodium phosphate, are made into the solution of transparent clarification；
The pretreatment of D, sample：Magnesium alloy is used 360 mesh respectively, 600 mesh, 800 mesh, the sand papering of 1000 mesh is gone forward side by side
Row alkali cleaning and pickling processes；
The preparation of E, coating：Sample is inserted 0.5-2 minutes in solution of silane, slow lifting, after specimen surface dries,
Repeat once, then sample is put into 80-120 DEG C of drying baker and is incubated 0.5-2 hours.
KH550 types silane coupler Hydrolytic Mechanism is as follows in the present invention：
NH2(CH2)3Si(OC2H5)3+H2O→NH2(CH2)3Si(OC2H5)2OH+C2H5OH
NH2(CH2)3Si(OC2H5)2OH+H2O→NH2(CH2)3SiOC2H5(OH)2+C2H5OH
NH2(CH2)3SiOC2H5(OH)2+H2O→NH2(CH2)3Si(OH)3+C2H5OH
KH550 types silane coupler is hydrolyzed 6 hours at ambient temperature, appropriate silanol molecule is formed, after pretreatment
Magnesium alloy by self assembly mode, form one layer of silane film on surface, and by this tunic inductive formation calcium phosphor coating, improve
The biocompatibility on its surface.
Technical solution of the present invention has advantages below：
1st, experimentation temperature is low, will not destroy the structure of matrix, will not change the grain size of matrix, to the heat of matrix
Influence is small
2nd, the composite coating that organic and inorganic is combined can be prepared.
3rd, the composite coating prepared, organosilan part is comparatively dense, uniform, and inorganic calcium phosphorus part has in threadiness
Beneficial to the attachment of cell.
Brief description of the drawings
Fig. 1 are that alcohol water ratio is 1/9, and 2% silane coupler is hydrolyzed under 500 times of the Mg alloy surface for post-processing for 6 hours
Scanning electron microscopic picture
Fig. 2 are that alcohol water ratio is 1/9, and 6% silane coupler is hydrolyzed under 500 times of the Mg alloy surface for post-processing for 6 hours
Scanning electron microscopic picture
Fig. 3 are that alcohol water ratio is 1/9, and 10% silane coupler hydrolyzes 500 times of the Mg alloy surface for post-processing for 6 hours
Under scanning electron microscopic picture
Fig. 4 are that alcohol water ratio is 9, and 6% silane coupler is hydrolyzed under 500 times of the Mg alloy surface for post-processing for 6 hours
Scanning electron microscopic picture
Fig. 5 are that alcohol water ratio is 1/9, and 6% silane coupler hydrolyzes 500 times of the Mg alloy surface for post-processing for 24 hours
Under scanning electron microscopic picture
Fig. 6 are the polarization curve of the magnesium alloy of embodiment 2
Specific embodiment
With reference to example and accompanying drawing, the invention will be further described：
Embodiment 1.
The preparation of A, solution of silane：It is the aqueous solution that 1/9, Silane coupling agent KH550 is 2% to prepare alcohol water ratio, stands 6
It is stand-by after hour；
The preparation of B, Acidwash solution：It is the acetic acid solution of 19.2g/L to prepare mass concentration, and is added thereto to 50g/L's
Potassium nitrate, is made into the solution of transparent clarification；
The preparation of C, soda-wash solution：It is the sodium hydroxide solution of 20g/L to prepare mass concentration, and is sequentially added thereto
50g/L and 25g/L sodium metasilicate and tertiary sodium phosphate, are made into the solution of transparent clarification；
The pretreatment of D, sample：Magnesium alloy is used 360 mesh respectively, 600 mesh, 800 mesh, the sand papering of 1000 mesh is gone forward side by side
Row alkali cleaning and pickling processes；
The preparation of E, coating：Sample is inserted 1 minute in solution of silane, slow lifting after specimen surface dries, is repeated
Once, then be put into sample in 100 DEG C of drying bakers and be incubated 1 hour by operation.
It can be seen that coating surface is more coarse in Fig. 1, coating coating is not that very uniformly coating layer thickness is relatively thin,
Enough isolation are not provided with to improve corrosion resisting property.
Embodiment 2
The preparation of A, solution of silane：It is the aqueous solution that 1/9, Silane coupling agent KH550 is 6% to prepare alcohol water ratio, stands 6
It is stand-by after hour；
The preparation of B, Acidwash solution：It is the acetic acid solution of 19.2g/L to prepare mass concentration, and is added thereto to 50g/L's
Potassium nitrate, is made into the solution of transparent clarification；
The preparation of C, soda-wash solution：It is the sodium hydroxide solution of 20g/L to prepare mass concentration, and is sequentially added thereto
50g/L and 25g/L sodium metasilicate and tertiary sodium phosphate, are made into the solution of transparent clarification；
The pretreatment of D, sample：Magnesium alloy is used 360 mesh respectively, 600 mesh, 800 mesh, the sand papering of 1000 mesh is gone forward side by side
Row alkali cleaning and pickling processes；
The preparation of E, coating：Sample is inserted 1 minute in solution of silane, slow lifting after specimen surface dries, is repeated
Once, then be put into sample in 100 DEG C of drying bakers and be incubated 1 hour by operation.
It can be seen that coating surface is more uniform, smooth in Fig. 2, coating layer thickness also increases, and has been well isolated from base
Body and corrosive medium, decay resistance are significantly improved.
Embodiment 3
The preparation of A, solution of silane：It is the aqueous solution that 1/9, Silane coupling agent KH550 is 10% to prepare alcohol water ratio, is stood
It is stand-by after 6 hours；
The preparation of B, Acidwash solution：It is the acetic acid solution of 19.2g/L to prepare mass concentration, and is added thereto to 50g/L's
Potassium nitrate, is made into the solution of transparent clarification；
The preparation of C, soda-wash solution：It is the sodium hydroxide solution of 20g/L to prepare mass concentration, and is sequentially added thereto
50g/L and 25g/L sodium metasilicate and tertiary sodium phosphate, are made into the solution of transparent clarification；
The pretreatment of D, sample：Magnesium alloy is used 360 mesh respectively, 600 mesh, 800 mesh, the sand papering of 1000 mesh is gone forward side by side
Row alkali cleaning and pickling processes；
The preparation of E, coating：Sample is inserted 1 minute in solution of silane, slow lifting after specimen surface dries, is repeated
Once, then be put into sample in 100 DEG C of drying bakers and be incubated 1 hour by operation.
It can be seen that although content is 10% more uniform, smooth in Fig. 3, there are some pits on surface, can influence its
Some performances of corrosion resistance Shangdi.
Embodiment 4
The preparation of A, solution of silane：It is the aqueous solution that 9, Silane coupling agent KH550 is 6% to prepare alcohol water ratio, stands 6 small
When after it is stand-by；
The preparation of B, Acidwash solution：It is the acetic acid solution of 19.2g/L to prepare mass concentration, and is added thereto to 50g/L's
Potassium nitrate, is made into the solution of transparent clarification；
The preparation of C, soda-wash solution：It is the sodium hydroxide solution of 20g/L to prepare mass concentration, and is sequentially added thereto
50g/L and 25g/L sodium metasilicate and tertiary sodium phosphate, are made into the solution of transparent clarification；
The pretreatment of D, sample：Magnesium alloy is used 360 mesh respectively, 600 mesh, 800 mesh, the sand papering of 1000 mesh is gone forward side by side
Row alkali cleaning and pickling processes；
The preparation of E, coating：Sample is inserted 1 minute in solution of silane, slow lifting after specimen surface dries, is repeated
Once, then be put into sample in 100 DEG C of drying bakers and be incubated 1 hour by operation.
It can be seen that silane coupler hydrolyzes incomplete viscosity institute higher when some raised possibility occurs in coating surface in Fig. 4
Cause.
Embodiment 5
The preparation of A, solution of silane：It is the aqueous solution that 1/9, Silane coupling agent KH550 is 6% to prepare alcohol water ratio, is stood
It is stand-by after 24 hours；
The preparation of B, Acidwash solution：It is the acetic acid solution of 19.2g/L to prepare mass concentration, and is added thereto to 50g/L's
Potassium nitrate, is made into the solution of transparent clarification；
The preparation of C, soda-wash solution：It is the sodium hydroxide solution of 20g/L to prepare mass concentration, and is sequentially added thereto
50g/L and 25g/L sodium metasilicate and tertiary sodium phosphate, are made into the solution of transparent clarification；
The pretreatment of D, sample：Magnesium alloy is used 360 mesh respectively, 600 mesh, 800 mesh, the sand papering of 1000 mesh is gone forward side by side
Row alkali cleaning and pickling processes；
The preparation of E, coating：Sample is inserted 1 minute in solution of silane, slow lifting after specimen surface dries, is repeated
Once, then be put into sample in 100 DEG C of drying bakers and be incubated 1 hour by operation.
It can be seen that coating surface is in bulk in Fig. 5, and there is the phenomenon for coming off in some places, it may be possible to hydrolysis time
It is long, occur polymerization between silane coupler caused.
The preparation of above-mentioned solution of silane：Ethanol is chosen as 9-1/9 with water volume ratio range.
Above-mentioned KH550 types silane coupler volume fraction is chosen as 2%-10%.
Above-mentioned KH550 types silane coupler hydrolysis time is chosen as 6-24 hours.
It is optional 0.5-2 minutes that said sample inserts solution of silane
Can be incubated under 80-120 DEG C of environment after said sample coating.
Above-mentioned soaking time is chosen as 0.5-2 hours
Above said content is the basic explanation under present inventive concept, and any equivalent transformation done according to the present invention,
Protection scope of the present invention all should be belonged to.
Claims (6)
1. a kind of preparation method of Mg alloy surface silane treatment corrosion-resistant coating, including to the pre- place of magnesium alloy matrix surface
The subsequent treatment process of reason, preparation and coating, it is characterised in that：First Mg alloy surface is polished, alkali cleaning, pickling carries out pre-
Treatment, coating is prepared to be generated by self assembly mode under room temperature environment and grown on surface, forms organic silane film layer, tool
Body is comprised the following steps：
The preparation of A, solution of silane：The aqueous solution that alcohol water ratio is 9-1/9, Silane coupling agent KH550 is 2-14% is prepared, is stood
It is stand-by after 6-24 hours；
The preparation of B, Acidwash solution：It is the acetic acid solution of 19.2g/L to prepare mass concentration, and is added thereto to the nitric acid of 50g/L
Potassium, is made into the solution of transparent clarification；
The preparation of C, soda-wash solution：It is the sodium hydroxide solution of 20g/L to prepare mass concentration, and sequentially adds 50g/L thereto
With 25g/L sodium metasilicate and tertiary sodium phosphate, the solution of transparent clarification is made into；
The pretreatment of D, sample：Magnesium alloy is used 360 mesh, 600 mesh, 800 mesh, the sand papering of 1000 mesh respectively, and carries out alkali
Wash and pickling processes；
The preparation of E, coating：Sample is inserted 0.5-2 minutes in solution of silane, slow lifting after specimen surface dries, is repeated
Once, then be put into sample in 80-120 DEG C of drying baker and be incubated 0.5-2 hours by operation.
2. a kind of preparation method of Mg alloy surface silane treatment corrosion-resistant coating according to claim 1, its feature exists
In：Specifically include following steps：
The preparation of A, solution of silane：It is the aqueous solution that 1/9, Silane coupling agent KH550 is 2% to prepare alcohol water ratio, stands 6 hours
It is stand-by afterwards；
The preparation of B, Acidwash solution：It is the acetic acid solution of 19.2g/L to prepare mass concentration, and is added thereto to the nitric acid of 50g/L
Potassium, is made into the solution of transparent clarification；
The preparation of C, soda-wash solution：It is the sodium hydroxide solution of 20g/L to prepare mass concentration, and sequentially adds 50g/L thereto
With 25g/L sodium metasilicate and tertiary sodium phosphate, the solution of transparent clarification is made into；
The pretreatment of D, sample：Magnesium alloy is used 360 mesh, 600 mesh, 800 mesh, the sand papering of 1000 mesh respectively, and carries out alkali
Wash and pickling processes；
The preparation of E, coating：Sample is inserted 1 minute in solution of silane, slow lifting after specimen surface dries, is repeated
Once, then sample is put into 100 DEG C of drying bakers and is incubated 1 hour.
3. a kind of preparation method of Mg alloy surface silane treatment corrosion-resistant coating according to claim 1, its feature exists
In：Specifically include following steps：
The preparation of A, solution of silane：It is the aqueous solution that 1/9, Silane coupling agent KH550 is 6% to prepare alcohol water ratio, stands 6 hours
It is stand-by afterwards；
The preparation of B, Acidwash solution：It is the acetic acid solution of 19.2g/L to prepare mass concentration, and is added thereto to the nitric acid of 50g/L
Potassium, is made into the solution of transparent clarification；
The preparation of C, soda-wash solution：It is the sodium hydroxide solution of 20g/L to prepare mass concentration, and sequentially adds 50g/L thereto
With 25g/L sodium metasilicate and tertiary sodium phosphate, the solution of transparent clarification is made into；
The pretreatment of D, sample：Magnesium alloy is used 360 mesh, 600 mesh, 800 mesh, the sand papering of 1000 mesh respectively, and carries out alkali
Wash and pickling processes；
The preparation of E, coating：Sample is inserted 1 minute in solution of silane, slow lifting after specimen surface dries, is repeated
Once, then sample is put into 100 DEG C of drying bakers and is incubated 1 hour.
4. a kind of preparation method of Mg alloy surface silane treatment corrosion-resistant coating according to claim 1, its feature exists
In：Specifically include following steps：
The preparation of A, solution of silane：It is the aqueous solution that 1/9, Silane coupling agent KH550 is 10% to prepare alcohol water ratio, stands 6 small
When after it is stand-by；
The preparation of B, Acidwash solution：It is the acetic acid solution of 19.2g/L to prepare mass concentration, and is added thereto to the nitric acid of 50g/L
Potassium, is made into the solution of transparent clarification；
The preparation of C, soda-wash solution：It is the sodium hydroxide solution of 20g/L to prepare mass concentration, and sequentially adds 50g/L thereto
With 25g/L sodium metasilicate and tertiary sodium phosphate, the solution of transparent clarification is made into；
The pretreatment of D, sample：Magnesium alloy is used 360 mesh, 600 mesh, 800 mesh, the sand papering of 1000 mesh respectively, and carries out alkali
Wash and pickling processes；
The preparation of E, coating：Sample is inserted 1 minute in solution of silane, slow lifting after specimen surface dries, is repeated
Once, then sample is put into 100 DEG C of drying bakers and is incubated 1 hour.
5. a kind of preparation method of Mg alloy surface silane treatment corrosion-resistant coating according to claim 1, its feature exists
In：Specifically include following steps：
The preparation of A, solution of silane：It is the aqueous solution that 9, Silane coupling agent KH550 is 6% to prepare alcohol water ratio, after standing 6 hours
It is stand-by；
The preparation of B, Acidwash solution：It is the acetic acid solution of 19.2g/L to prepare mass concentration, and is added thereto to the nitric acid of 50g/L
Potassium, is made into the solution of transparent clarification；
The preparation of C, soda-wash solution：It is the sodium hydroxide solution of 20g/L to prepare mass concentration, and sequentially adds 50g/L thereto
With 25g/L sodium metasilicate and tertiary sodium phosphate, the solution of transparent clarification is made into；
The pretreatment of D, sample：Magnesium alloy is used 360 mesh, 600 mesh, 800 mesh, the sand papering of 1000 mesh respectively, and carries out alkali
Wash and pickling processes；
The preparation of E, coating：Sample is inserted 1 minute in solution of silane, slow lifting after specimen surface dries, is repeated
Once, then sample is put into 100 DEG C of drying bakers and is incubated 1 hour.
6. a kind of preparation method of Mg alloy surface silane treatment corrosion-resistant coating according to claim 1, its feature exists
In：Specifically include following steps：
The preparation of A, solution of silane：It is the aqueous solution that 1/9, Silane coupling agent KH550 is 6% to prepare alcohol water ratio, stands 24 small
When after it is stand-by；
The preparation of B, Acidwash solution：It is the acetic acid solution of 19.2g/L to prepare mass concentration, and is added thereto to the nitric acid of 50g/L
Potassium, is made into the solution of transparent clarification；
The preparation of C, soda-wash solution：It is the sodium hydroxide solution of 20g/L to prepare mass concentration, and sequentially adds 50g/L thereto
With 25g/L sodium metasilicate and tertiary sodium phosphate, the solution of transparent clarification is made into；
The pretreatment of D, sample：Magnesium alloy is used 360 mesh, 600 mesh, 800 mesh, the sand papering of 1000 mesh respectively, and carries out alkali
Wash and pickling processes；
The preparation of E, coating：Sample is inserted 1 minute in solution of silane, slow lifting after specimen surface dries, is repeated
Once, then sample is put into 100 DEG C of drying bakers and is incubated 1 hour.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107412863A (en) * | 2017-08-03 | 2017-12-01 | 苏州凌科特新材料有限公司 | A kind of medical antibacterial corrosion-resistant finishes and preparation method thereof |
| CN113559325A (en) * | 2021-07-19 | 2021-10-29 | 山东大学 | Method for preparing nano-hydroxyapatite composite silane film on surface of medical magnesium substrate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1549873A (en) * | 2001-06-28 | 2004-11-24 | �������ء���³̩�����¶����������� | Treatment for improved magnesium surface corrosion-resistance |
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| CN113559325A (en) * | 2021-07-19 | 2021-10-29 | 山东大学 | Method for preparing nano-hydroxyapatite composite silane film on surface of medical magnesium substrate |
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