CN104451631A - Simple coating method for magnesium and magnesium alloy surfaces - Google Patents
Simple coating method for magnesium and magnesium alloy surfaces Download PDFInfo
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- CN104451631A CN104451631A CN201410730333.XA CN201410730333A CN104451631A CN 104451631 A CN104451631 A CN 104451631A CN 201410730333 A CN201410730333 A CN 201410730333A CN 104451631 A CN104451631 A CN 104451631A
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- magnesium
- coating
- magnesium alloy
- reaction soln
- alloy
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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
- C23C22/23—Condensed phosphates
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- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Dental Preparations (AREA)
- Materials For Medical Uses (AREA)
Abstract
The invention provides a simple coating method for medical magnesium and magnesium alloy surfaces. According to the method, a magnesium polyphosphate coating is formed on a metal surface through chelation of magnesium ions formed on the surface during magnesium and magnesium alloy degradation and polyphosphate radical ions in a solution; and magnesium polyphosphate can be transformed into relatively stable magnesium pyrophosphate by subsequent high-temperature treatment. The simple coating method has the advantages of high efficiency, low investment and easiness in control; and orthopaedic or dental implant devices containing complicated structures, and brackets can be fully coated.
Description
Technical field
The present invention relates to the coating technology of medical embedded material, refer in particular to a kind of method of simple and easy coating of medical Mg-based hydrogen storage alloy surface.
Technical background
Mg-based hydrogen storage is the metallic substance that a class has higher mechanical strength, toughness, rigidity, more and more receives publicity in fields such as joint prosthesis, alternative, the artificial teeth of bone.The Young's modulus of Mg-based hydrogen storage and resistance to compression are surrendered close to human bone, effectively can reduce stress-shielding effect.Meanwhile, the biocompatibility of such material and degradable characteristic make magnesium metallic substance have boundless application prospect.Clinical study shows that magnesium forms solvable nontoxic oxide compound in body fluid, then excretes with urine.But the resistance to corrosion of Mg-based hydrogen storage is poor, this can cause the body interior mechanics performance degradation excessive velocities of degradable magnesium alloy organizer, affects repair and reconstruction result for the treatment of.Therefore how to improve Mg-based hydrogen storage body in corrosion resisting property, make it better be applied to crucial Science and Technology problem that clinical treatment is current Medical magnesium alloy material.
The method of reduction magnesium metal conventional at present comprises interpolation novel material and carries out modification to magnesium alloy and build corrosion-resistant finishes in metallic surface.The painting layer building on Mg-based hydrogen storage surface comparatively widely method mainly contains chemical conversion treatment, anodic oxidation and differential arc oxidation, laser surface modification, organic coating, metal plating etc.Form on Mg-based hydrogen storage surface the corrosion that chemical conversion film effectively can slow down magnesium alloy by chemical conversion, significantly the more chemical conversion film of research has bionical calcium phosphor coating, fluorochemical conversion film and magnesium oxide/hydroxide layer etc.
Summary of the invention
The object of the invention is to propose a kind of simple and easy method forming coating at medical Mg-based hydrogen storage alloy surface.
The method that the magnesium ion that when the present invention is degraded by Mg-based hydrogen storage, surface is formed and polyphosphoric acid root form inner complex builds coating, the advantages such as the method has efficiently, low input, easy to control.
This inner complex heat can be transformed into stable secondary magnesium phosphate and magnesium pyrophosphate successively, can improve corrosion resistance further.
The present invention is applicable to the target substrate with different structure and design, is particularly useful for the target substrate having complicated porous three-dimensional structure.
Embodiment
Elaborate to embodiments of the invention below, the present embodiment is implemented under premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following case study on implementation.
Example 1
1. in 200mL deionized water, add 0.149g sodium polyphosphate dissolve.
2. magnesium alloy is put into solution, soak after 5 minutes and take out drying.
3. the polyphosphoric acid magnesium coating formed in chelating mode is formed at Mg alloy surface.
Example 2
1. in 200mL deionized water, add 0.149g sodium polyphosphate dissolve.
2. magnesium alloy is put into solution, soak after 5 minutes and take out drying.
3. the polyphosphoric acid magnesium coating formed in chelating mode is formed at Mg alloy surface.
4. will be heated to 600 DEG C containing cated magnesium alloy in inert gas environment to process, top coat changes magnesium pyrophosphate into.
Example 3
1. in 200mL deionized water, add 1.49g sodium polyphosphate dissolve.
2. magnesium alloy is put into solution, soak after 5 minutes and take out drying.
3. the polyphosphoric acid magnesium coating formed in chelating mode is formed at Mg alloy surface.
4. will be heated to 200 DEG C containing cated magnesium alloy in inert gas environment to process, top coat changes secondary magnesium phosphate into.
Example 4
1. in 200mL deionized water, add 0.149g sodium polyphosphate dissolve, use sodium hydroxide by pH value of solution modulation 11.
2. magnesium alloy is put into solution, soak after 10 minutes and take out drying.
3. the polyphosphoric acid magnesium coating formed in chelating mode is formed at Mg alloy surface.
Example 5
1. in 200mL deionized water, add 0.5g sodium polyphosphate dissolve, use sodium hydroxide by pH value of solution modulation 10, by solution warms to 60 DEG C.
2. magnesium alloy is put into solution, soak after 5 minutes and take out drying.
3. the polyphosphoric acid magnesium coating formed in chelating mode is formed at Mg alloy surface.
Claims (7)
1. the simple and easy coating process on Mg-based hydrogen storage surface, is characterized in that it comprises the steps: 1) reaction soln of preparation containing polyphosphoric acid radical ion; 2) metal target is inserted reaction soln; 3) after reacting for some time, magnesium alloy is taken out; 4) top coat that main component is sodium polyphosphate magnesium is namely obtained after drying; 5) if need to carry out pyroprocessing to containing cated magnesium alloy in the environment being full of rare gas or vacuum, strengthen strength of coating, and sodium polyphosphate magnesium is changed into magnesium pyrophosphate.
2. according to the said coating process of claim 1, in reaction soln polyphosphoric acid ion concentration be recommended in 0.001 mole/rise ?0.1 mol/L scope, but concentration ratio exceeds recommended range also can carry out coating.
3., according to the said coating process of claim 1, the temperature of reaction soln should between freezing point and boiling point.
4., according to the said magnesium alloy of claim 1, comprise all kinds of alloy material containing magnesium elements.
5., according to the said coating process of claim 1, the treatment temp containing cated material should higher than this base material fusing point.
6., according to according to coating described in claim 1, can be applicable to the biomedical sectors such as tissue reparation and useful for drug delivery.
7. can soak with simulated body fluid according to according to coating described in claim 1, plasma spray, the coating technologies such as plating with the use of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410730333.XA CN104451631A (en) | 2014-12-04 | 2014-12-04 | Simple coating method for magnesium and magnesium alloy surfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410730333.XA CN104451631A (en) | 2014-12-04 | 2014-12-04 | Simple coating method for magnesium and magnesium alloy surfaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104451631A true CN104451631A (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410730333.XA Pending CN104451631A (en) | 2014-12-04 | 2014-12-04 | Simple coating method for magnesium and magnesium alloy surfaces |
Country Status (1)
| Country | Link |
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| CN (1) | CN104451631A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109055840A (en) * | 2018-08-30 | 2018-12-21 | 宁波帅特龙集团有限公司 | A kind of sunshade cover board |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5645650A (en) * | 1993-10-29 | 1997-07-08 | Henkel Corporation | Composition and process for treating magnesium-containing metals and product therefrom |
| CN1302341A (en) * | 1998-03-17 | 2001-07-04 | 松下电器产业株式会社 | Surface-treated article of magnesium or magnesium alloy, method of surface preparation and method of coating |
| CN1317598A (en) * | 2000-03-31 | 2001-10-17 | 日本巴卡莱近估股份有限公司 | Surface treatment process for magnesium alloy and magnesium alloy member |
| JP2008214701A (en) * | 2007-03-05 | 2008-09-18 | Kawasaki Heavy Ind Ltd | Method for forming chemical conversion-treated film of magnesium alloy |
-
2014
- 2014-12-04 CN CN201410730333.XA patent/CN104451631A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5645650A (en) * | 1993-10-29 | 1997-07-08 | Henkel Corporation | Composition and process for treating magnesium-containing metals and product therefrom |
| CN1302341A (en) * | 1998-03-17 | 2001-07-04 | 松下电器产业株式会社 | Surface-treated article of magnesium or magnesium alloy, method of surface preparation and method of coating |
| CN1317598A (en) * | 2000-03-31 | 2001-10-17 | 日本巴卡莱近估股份有限公司 | Surface treatment process for magnesium alloy and magnesium alloy member |
| JP2008214701A (en) * | 2007-03-05 | 2008-09-18 | Kawasaki Heavy Ind Ltd | Method for forming chemical conversion-treated film of magnesium alloy |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109055840A (en) * | 2018-08-30 | 2018-12-21 | 宁波帅特龙集团有限公司 | A kind of sunshade cover board |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150325 |
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| WD01 | Invention patent application deemed withdrawn after publication |