CN106435706B - The electrochemical polishing method of magnesium intravascular stent - Google Patents
The electrochemical polishing method of magnesium intravascular stent Download PDFInfo
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- CN106435706B CN106435706B CN201510472215.8A CN201510472215A CN106435706B CN 106435706 B CN106435706 B CN 106435706B CN 201510472215 A CN201510472215 A CN 201510472215A CN 106435706 B CN106435706 B CN 106435706B
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- magnesium
- intravascular stent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/16—Polishing
- C25F3/18—Polishing of light metals
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Materials For Medical Uses (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The present invention discloses a kind of electrochemical polishing method of magnesium intravascular stent, and first an anode and a cathode are placed in an organic-magnesium electrolyte, which is magnesium intravascular stent；Apply a decomposition voltage again between the anode and the cathode, obtains a polished magnesium intravascular stent.The organic electrolyte includes the organic-magnesium electrolyte of the solvent and bromination alkoxyl magnesium in the group that ether, tetrahydrofuran, 2- methyltetrahydrofuran and methyl cyclopentane ether are constituted.The electrochemical polishing method of magnesium intravascular stent of the invention is with time saving, laborsaving and suitable for having the advantages that fine magnesium intravascular stent.
Description
Technical field
The present invention relates to a kind of electrochemical polishing method more particularly to a kind of electrochemical polish sides of magnesium intravascular stent
Method.
Background technique
Magnesium metal component, because having, light-weight, specific strength is high, thermal diffusivity is good, electromagnetism mask is good, shock resistance is good
With the characteristics such as recyclability is good, in the field for being widely used in communications and transportation, electronic product and implantable medical equipment in recent years
In.In order to can ensure that magnesium metal component there can be the surface of good quality and finishing, need to carry out magnesium metal component
Metallographic Analysis and surface finish processing, and when carrying out Metallographic Analysis and surface finish is handled, it needs respectively to magnesium metal structure
The metallographic specimen and rough-wrought product of part are mechanically polished, to obtain the surface of clearly metallograph and finishing respectively.
However, common mechanical polishing is to reach in a manual manner, other than quite expending time and manpower, also often
It can not make magnesium metal component that there is uniform finish because of human error.And the mode of mechanical polishing is dfficult to apply to
Accurate and tiny magnesium metal component, for example, the intravascular stent of magnesium alloy used in medically, not only size
It is small that also there is considerably complicated shape, therefore can not achieve the purpose that surface finish is handled through the mode of mechanical polishing.
Summary of the invention
The shortcomings that in view of the above-mentioned prior art, it is an object of the invention to save needed for the polishing of magnesium intravascular stent to expend
Time and manpower, and fine magnesium intravascular stent is polished.
To reach goal of the invention above-mentioned, technological means adopted by the present invention is to provide a kind of electricity of magnesium intravascular stent
Chemically polishing method, step include:
One anode and a cathode are placed in an organic-magnesium electrolyte, which is a magnesium intravascular stent, the cathode
Comprising one first cathode part and one second cathode part, which is set on the inside of the magnesium intravascular stent, second yin
Pole part is set on the outside of the magnesium intravascular stent；And
Apply a decomposition voltage between anode and the cathode, obtains a polished magnesium intravascular stent；
Wherein, which includes a solvent and an organic-magnesium electrolyte, which is selected from following composition
Group: ether (ethyl ether), tetrahydrofuran (tetrahydrofuran), 2- methyltetrahydrofuran (2-methyl
Tetrahydrofuran) and methyl cyclopentane ether (cyclopentyl methyl ether), and the organic-magnesium electrolyte is bromination
Alkoxyl magnesium (alkoxy magnesium bromide).
It is preferred that in 1 liter (L) of organic-magnesium electrolyte, in the organic-magnesium electrolyte, organic-magnesium electrolyte is not
Ear number is between 1.0 moles (mole) between 2.0mole.
It is preferred that the organic-magnesium electrolyte includes a supporting electrolyte, which is aluminium chloride.
More preferably, in the organic-magnesium electrolyte of 1L, the mole number of the supporting electrolyte between 0.05mole extremely
Between 0.15mole.
It is preferred that the magnesium intravascular stent contains 90.00 weight percents on the basis of the entirety of the magnesium intravascular stent
Than the magnesium more than (wt%).
More preferably, on the basis of the entirety of the magnesium intravascular stent, which contains 90.00wt% extremely
The magnesium of 99.00wt%.
The cathode is stainless steel (stainless steel), the al member of aluminium containing 99.90wt% or more or is contained
The tin component of the tin of 99.90wt% or more.
It is preferred that being placed in the organic-magnesium electrolyte in using the magnesium intravascular stent as anode and the cathode
Step, and applies the decomposition voltage between the magnesium intravascular stent and the cathode as anode to obtain the polished magnesium
Between the step of intravascular stent processed, one inert gas of covering is further includeed in the surface of the organic-magnesium electrolyte the step of.
It is preferred that described application decomposition voltage is between the anode and the cathode, to obtain the polished magnesium system
The step of intravascular stent, includes:
Under normal pressure and 30 DEG C to 40 DEG C of operating temperature, apply the decomposition voltage and 25 milliamperes/square centimeter (mA/
cm2) to 50mA/cm2Current density [by the decomposition voltage that the decomposition voltage is adjusted to 3 volts (V) to 10V] in the sun
Between pole and the cathode, with obtain the polished magnesium intravascular stent and one reduction magnesium metal the step of.
In the method for preparing magnesium metal, the normal pressure is 1 atmospheric pressure (atm).
Based on above-mentioned, the electrochemical polishing method of the magnesium intravascular stent is in a manner of electrochemical polish to magnesium blood vessel branch
Frame is polished, and can be reached simultaneously and be save with the time of consuming and manpower needed for manually being polished, and to fine magnesium
The advantages of intravascular stent processed is polished.
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as a limitation of the invention.
Detailed description of the invention
Fig. 1 is the flow chart of the electrochemical polishing method of magnesium metal component of the invention；
Fig. 2 is anode, cathode and the electrolyte of the electrochemical polishing method of the magnesium metal component of the embodiment of the present invention 1
Configuration schematic diagram；
Fig. 3 is anode, cathode and the electrolyte of the electrochemical polishing method of the magnesium metal component of the embodiment of the present invention 2
Configuration schematic diagram；
Fig. 4 is the magnesium metal component (sun of the electrochemical polishing method of the magnesium metal component of the embodiment of the present invention 2
Pole) three-dimensional appearance schematic diagram.
Specific embodiment
Structural principle and working principle of the invention are described in detail with reference to the accompanying drawing:
Hereinafter, by by the following specific examples embodiment that the present invention will be described in detail, technical field has logical
Normal skill can understand the advantages of capable of reaching of the invention and effect easily via the content of this specification, and in not departing from
Various modifications and change are carried out under spirit of the invention, to implement or using the contents of the present invention.
Embodiment 1
Fig. 1 and Fig. 2 is please referred to, the electrochemical polishing method of the magnesium metal component of the present embodiment is as described below.Yu Benshi
It applies in example, used magnesium metal component 10 is the metallographic specimen of the magnesium containing 98wt%.
Firstly, as described in step S1, using the magnesium metal component 10 as anode, and by the magnesium metal component 10 and one
Cathode 20 is placed in an organic electrolyte 30.In this present embodiment, which is stainless steel；The organic-magnesium electrolyte 30 packet
Containing a solvent, an organic bath and a supporting electrolyte, which is the tetrahydrofuran of 1L, which is ethyl
Magnesium chloride, the supporting electrolyte are aluminium chloride；Wherein, organic in the organic electrolyte 30 in the organic-magnesium electrolyte 30 of 1L
The mole number of magnesium eletrolysis matter is 1.5mole and the mole Particle density of the supporting electrolyte is 0.1mole；Furthermore, the yin
Pole 20 includes one first cathode part 21 and the second cathode part 22 that is electrically connected with the first cathode part 21, the first cathode part
21 and the second cathode part 22 be located at the two sides of the magnesium metal component 10.
Then, as described in step S2, an inert gas is covered in the surface of the organic-magnesium electrolyte 30；In the present embodiment
In, which is nitrogen.The nitrogen is protective gas, to prevent the exposure of organic-magnesium electrolyte to be decomposed in air.
Later, as described in step S3, under normal pressure and 30 DEG C of operating temperature, the decomposition voltage of a power supply unit is adjusted
In 3V between 10V, enable the power supply unit provide 25mA/cm2Current density 90 points between the anode and the cathode 20
Clock obtains the magnesium metal of a polished magnesium metal component 10 and a reduction, wherein the magnesium metal of the reduction is located at the yin
On the surface of pole 20.
In the electrochemical polishing method of the magnesium metal component of the present embodiment, when decomposition voltage is applied to the anode and is somebody's turn to do
When between cathode 20, the protruding parts on the surface of the magnesium metal component 10 as anode can be aoxidized first and be dissolved in this
In organic electrolyte 30, so that the protruding parts on the surface of metallographic specimen are removed, and then one is obtained with flat surface
Magnesium metal component 10, that is, the polished magnesium metal component 10.Wherein, the surface of the magnesium metal component 10 is prominent
When position can be oxidized and dissolved out, magnesium ion (Mg can be released2+) in the organic electrolyte 30, which can be toward the yin
Pole 20 is mobile, and forms the magnesium metal of reduction in the surface of the cathode 20, thus recyclable further to utilize.
In this present embodiment, the polishing of the magnesium metal component 10 is electrochemically to complete, in addition to saving with people
Other than the time of consuming needed for work is polished and manpower, also make the magnesium metal component 10 that there is uniform finish.
Embodiment 2
The electrochemistry of the magnesium metal component of the electrochemical polishing method and embodiment 1 of the magnesium metal component of the present embodiment
Polishing method is generally same.Difference between the present embodiment and embodiment 1 is as described below.
It please refers to shown in Fig. 3, Fig. 4, in this present embodiment, which is a magnesium intravascular stent, the magnesium
Intravascular stent processed is a cylinder with netted barrel, and using the magnesium intravascular stent as anode, and the first of cathode 20A
Cathode part 21A is arranged in the inside of magnesium metal component 10A, and the second cathode part 22A of cathode 20A is sheathed on the blood vessel branch
The outside of frame.Wherein, the magnesium metal component 10A is made by magnesium tin alloy, on the basis of the entirety of the magnesium tin alloy, the magnesium tin
The content of magnesium of alloy is 95wt%, and the Theil indices of the magnesium tin alloy are 5wt%.
In this present embodiment, which is the cylinder with netted barrel, and shape is considerably complicated and smart
Carefully.The present embodiment electrochemically polishes magnesium metal component 10A, in addition to saving manually to carry out polishing institute
Other than the time that need to be expended and manpower, moreover it is possible to there is complicated and precise shape magnesium metal component 10A to polish this, and
Make this that there is uniform surface with complicated and precise shape magnesium metal component 10A.
Based on above-mentioned, the present invention polishes magnesium metal component by a manner of electrochemical polish, while can reach
Save the time to expend needed for manually being polished and manpower, the magnesium metal component suitable for having complicated and precise shape
And the advantages of recycling magnesium gold metal.
Certainly, the invention may also have other embodiments, without deviating from the spirit and substance of the present invention, ripe
It knows those skilled in the art and makes various corresponding changes and modifications, but these corresponding changes and change in accordance with the present invention
Shape all should fall within the scope of protection of the appended claims of the present invention.
Claims (9)
1. a kind of electrochemical polishing method of magnesium intravascular stent, which is characterized in that wherein include the following steps:
One anode and a cathode are placed in an organic-magnesium electrolyte, which is a magnesium intravascular stent, which includes
One first cathode part and one second cathode part, the first cathode part are set on the inside of the magnesium intravascular stent, the second cathode part
It is set on the outside of the magnesium intravascular stent；And
Apply a decomposition voltage between the anode and the cathode, to obtain a polished magnesium intravascular stent；
Wherein, which includes a solvent and an organic-magnesium electrolyte, which is selected from the group of following composition
Group: ether, tetrahydrofuran, 2- methyltetrahydrofuran and methyl cyclopentane ether, and the organic-magnesium electrolyte is bromination alkoxyl magnesium.
2. the electrochemical polishing method of magnesium intravascular stent according to claim 1, it is characterised in that: organic magnesium eletrolysis
Liquid includes a supporting electrolyte, which is aluminium chloride.
3. the electrochemical polishing method of magnesium intravascular stent according to claim 2, it is characterised in that: in the organic-magnesium of 1L
In electrolyte, the mole number of organic-magnesium electrolyte is between 1.0mol between 2.0mol in the organic-magnesium electrolyte, and this is organic
The mole number of supporting electrolyte is between 0.05mol between 0.15mol in magnesium eletrolysis liquid.
4. the electrochemical polishing method of magnesium intravascular stent as claimed in any of claims 1 to 3, feature exist
In: on the basis of the entirety of the magnesium intravascular stent, which contains the magnesium of 90.00wt% or more.
5. the electrochemical polishing method of magnesium intravascular stent according to claim 4, it is characterised in that: the cathode is stainless
The tin component of steel, the al member of aluminium containing 99.90wt% or more or the tin containing 99.90wt% or more.
6. the electrochemical polishing method of magnesium intravascular stent as claimed in any of claims 1 to 3, feature exist
In: in the step being placed in the anode and the cathode in the organic-magnesium electrolyte and in applying the decomposition voltage in the anode
Include between the step of between the cathode to obtain the polished magnesium intravascular stent: one inert gas of covering is organic in this
The step of surface of magnesium eletrolysis liquid.
7. the electrochemical polishing method of magnesium intravascular stent according to claim 5, it is characterised in that: in by the anode with
The cathode be placed in step in the organic-magnesium electrolyte and in apply the decomposition voltage between the anode and the cathode with
Include between the step of obtaining the polished magnesium intravascular stent: one inert gas of covering is in the surface of the organic-magnesium electrolyte
The step of.
8. the electrochemical polishing method of magnesium intravascular stent as claimed in any of claims 1 to 3, feature exist
In: described application decomposition voltage between the anode and the cathode, the step of to obtain the polished magnesium intravascular stent
Include:
Under normal pressure and 30 DEG C to 40 DEG C of operating temperature, apply the decomposition voltage and 25mA/cm2To 50mA/cm2Electric current it is close
Spend between the anode and the cathode, with obtain the polished magnesium intravascular stent and one reduction magnesium metal the step of.
9. the electrochemical polishing method of magnesium intravascular stent according to claim 7, it is characterised in that: described application electricity
Voltage is solved between the anode and the cathode, includes the step of the polished magnesium intravascular stent to obtain:
Under normal pressure and 30 DEG C to 40 DEG C of operating temperature, apply the decomposition voltage and 25mA/cm2To 50mA/cm2Electric current it is close
Spend between the anode and the cathode, with obtain the polished magnesium intravascular stent and one reduction magnesium metal the step of.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510472215.8A CN106435706B (en) | 2015-08-04 | 2015-08-04 | The electrochemical polishing method of magnesium intravascular stent |
| PCT/CN2016/093029 WO2017020832A1 (en) | 2015-08-04 | 2016-08-03 | Electrochemical polishing method for magnesium metal members |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510472215.8A CN106435706B (en) | 2015-08-04 | 2015-08-04 | The electrochemical polishing method of magnesium intravascular stent |
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| CN106435706A CN106435706A (en) | 2017-02-22 |
| CN106435706B true CN106435706B (en) | 2019-02-26 |
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| WO (1) | WO2017020832A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108193260A (en) * | 2018-01-26 | 2018-06-22 | 北京大学深圳研究院 | A kind of magnesium alloy blood vessel rack processing of surface polishing and auxiliary body |
| CN113042975B (en) * | 2021-03-08 | 2023-07-28 | 沛县盛玛特新材料研究院有限公司 | Treatment method for improving surface quality of medical metal stent and medical metal stent |
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| US4801363A (en) * | 1987-01-05 | 1989-01-31 | The Dow Chemical Company | High purity alkaline earths via electrodeposition |
| CN1784512A (en) * | 2003-03-05 | 2006-06-07 | 环球爱奥尼克斯公司 | Electrodeposition of aluminum and refractory metals from non-aromatic organic solvents |
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| CN102337580A (en) * | 2011-09-21 | 2012-02-01 | 合肥金盟工贸有限公司 | Ion liquid polishing solution for electrochemically polishing magnesium alloy and preparation method thereof |
| CN103173785A (en) * | 2013-04-16 | 2013-06-26 | 中国科学院青海盐湖研究所 | Method for preparing magnesium metal through electrolysis by using novel magnesium deep eutectic solvent |
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| US6835300B2 (en) * | 2002-09-13 | 2004-12-28 | General Electric Company | Electropolishing solution and methods for its use and recovery |
| CN101591799B (en) * | 2008-05-30 | 2011-04-20 | 比亚迪股份有限公司 | Electrolytic polishing solution of magnesium alloy and magnesium alloy surface polishing processing method |
| CN102140671B (en) * | 2011-04-07 | 2013-05-01 | 上海交通大学 | Electrochemical polishing method of degradable magnesium alloy endovascular stent |
| CN103938262A (en) * | 2013-01-23 | 2014-07-23 | 汉达精密电子(昆山)有限公司 | Magnesium alloy electrochemical polishing solution and method of processing magnesium alloy with the polishing solution |
| CN104073868B (en) * | 2014-06-18 | 2016-08-31 | 郑州大学 | A kind of electrochemical process for treating being applicable to magnesium alloy intervention apparatus and auxiliary equipment |
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2015
- 2015-08-04 CN CN201510472215.8A patent/CN106435706B/en active Active
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- 2016-08-03 WO PCT/CN2016/093029 patent/WO2017020832A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4801363A (en) * | 1987-01-05 | 1989-01-31 | The Dow Chemical Company | High purity alkaline earths via electrodeposition |
| CN1784512A (en) * | 2003-03-05 | 2006-06-07 | 环球爱奥尼克斯公司 | Electrodeposition of aluminum and refractory metals from non-aromatic organic solvents |
| CN1860257A (en) * | 2003-09-27 | 2006-11-08 | 阿鲁米纳表面技术有限及两合公司 | Electrolyte for the galvanic deposition of aluminum-magnesium alloys |
| CN102337580A (en) * | 2011-09-21 | 2012-02-01 | 合肥金盟工贸有限公司 | Ion liquid polishing solution for electrochemically polishing magnesium alloy and preparation method thereof |
| CN103173785A (en) * | 2013-04-16 | 2013-06-26 | 中国科学院青海盐湖研究所 | Method for preparing magnesium metal through electrolysis by using novel magnesium deep eutectic solvent |
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| CN106435706A (en) | 2017-02-22 |
| WO2017020832A1 (en) | 2017-02-09 |
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