CN107937782A - A kind of preparation method of gradient Mg Zn alloy bars - Google Patents
A kind of preparation method of gradient Mg Zn alloy bars Download PDFInfo
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- CN107937782A CN107937782A CN201711185027.2A CN201711185027A CN107937782A CN 107937782 A CN107937782 A CN 107937782A CN 201711185027 A CN201711185027 A CN 201711185027A CN 107937782 A CN107937782 A CN 107937782A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
- C22C23/04—Alloys based on magnesium with zinc or cadmium as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0408—Light metal alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/047—Making non-ferrous alloys by powder metallurgy comprising intermetallic compounds
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Abstract
It is Mg by mass ratio the invention discloses a kind of preparation method of gradient Mg Zn alloy bars:Zn=95:5 Mg Zn mixed-powders are pressed intoBar；It is Mg by mass ratio:Zn=90:10 Mg Zn mixed-powders are pressed into outside diameter and areInternal diameter isMaterials in the tube；It is Mg by mass ratio:Zn=80:20 Mg Zn mixed-powders are pressed into outside diameter and areInternal diameter isMaterials in the tube；Bar and materials in the tube are assembled, internal layer isBar, intermediate layer is that outside diameter isInternal diameter isMaterials in the tube, outer layer is that outside diameter isInternal diameter isMaterials in the tube, after assembling load internal diameter beSteel barrel in sinter together, then apply vertical pressure to barrel one end, the other end is with outside diameterRotary press head carry out rotary squeezing, the rubbing action of rotary press head and storeroom makes the material of contact area be in molten condition, and under the action of pressure at right angle, the material of melting is overflowed and solidified from the through hole among rotary press head, that is, obtains gradient Mg Zn alloy bars.
Description
Technical field
The present invention relates to a kind of preparation method of gradient Mg-Zn alloy bars, belong to field of material engineering technology.
Background technology
Mg-Zn alloys can be used as bio-medical material, and the speed of initial period degraded is wished in human body fluid environment
Slowly, final stage can properly increase its degradation speed, and the material of component of the same race can not meet this requirement.
The content of the invention
It is an object of the invention to provide a kind of preparation method of gradient Mg-Zn alloy bars.Method using the present invention, system
Standby Mg-Zn alloy bars are gradually decreased from surface to the content of center portion Zn, and degradation speed can step up.
The purpose of the present invention is achieved through the following technical solutions：
A kind of preparation method of gradient Mg-Zn alloy bars, comprises the following steps：
(1) it is respectively Mg by mass ratio:Zn=95:5、Mg:Zn=90:10 and Mg:Zn=80:20 Mg powder, Zn powder mix
Close it is uniform, obtain three kinds of different qualities than Mg-Zn mixed-powders；
(2) it is Mg by mass ratio in step (1):Zn=95:5 Mg-Zn mixed-powders load mould, are pressed on forcing press
It is madeBar；It is Mg by mass ratio:Zn=90:10 Mg-Zn mixed-powders load mould, are pressed on forcing press
Outside diameter isInternal diameter isMaterials in the tube；It is Mg by mass ratio:Zn=80:20 Mg-Zn mixed-powders load mould, are pressing
Being pressed into outside diameter on power machine isInternal diameter isMaterials in the tube；
(3) will be assembled through the compressing bar of step (2) and materials in the tube, internal layer is that outside diameter isBar, intermediate layer is
Outside diameter isInternal diameter isMaterials in the tube, outer layer is that outside diameter isInternal diameter isMaterials in the tube, after assembling load internal diameter be
Steel barrel in；
(4) it will be put into togerther in sintering furnace and sinter through step (3) barrel and materials in the tube, bar, sintering temperature 660-750
℃；
(5) after step (4) sintering, vertical pressure is applied to barrel one end, the other end is with outside diameterRotation pressure
Head carries out rotary squeezing, and the rotary press head is equipped with through hole along central axis direction, and the rubbing action of rotary press head and storeroom makes
The material of contact area is in molten condition, and under the action of pressure at right angle, the material of melting is from the through hole among rotary press head
Overflow and solidify, that is, obtain gradient Mg-Zn alloy bars.
In the step (1), Mg powder, the granularity of Zn powder are 20 μm~50 μm.
The quality of three kinds of pressed powders in the step (2) is equal, and A is 10~50mm, and B is 14~71mm, C for 17~
87mm；Forcing press press power is 100MPa-600MPa.
The material of barrel is 1Cr18Ni9Ti in the step (3), and the wall thickness of barrel is 20mm.
Sintering furnace is vacuum sintering furnace or gas-protecting sintering stove in the step (4).
In the step (5), through-hole diameter is 5~30mm, and the rotating speed of rotary press head is 500~1000r/min, extruding speed
Spend for 10~20mm/min.
The technical principle of the present invention is specific as follows：
(1) in sintering process, Zn melts after sintering temperature reaches 420 DEG C, and Mg reacts to form MgZn intermetallics
Thing, sintering temperature remaining Mg fusings after reaching 650 DEG C, part Zn, which dissolves in, forms solid solution Mg (Zn) in Mg.The content of Zn is got over
Height, the MgZn intermetallic compounds of generation are more.
(2) in process, the rubbing action of rotary press head and storeroom makes the material of contact area be in molten condition,
Center portion Zn contents are low, and MgZn intermetallic compounds are few, melt first；Take second place in intermediate layer；Outermost layer Zn contents are high, between MgZn metals
Compound finally reaches molten condition.Under the action of pressure at right angle, the material of melting overflows from the through hole among rotary press head
Go out and solidify, the Mg-Zn alloy bars finally obtained are gradually decreased from surface to the content of center portion Zn.
(3) content of superficial layer Zn is higher, and MgZn intermetallic compounds are more, and the degradation speed in human body fluid reduces.
As the reduction of Zn contents, MgZn intermetallic compounds are reduced from surface to center portion, the degradation speed increase in human body fluid, reaches
The effect fast after first slow to degradation speed.
Brief description of the drawings
Fig. 1 is gradient Mg-Zn alloy bar machining sketch charts；Wherein, 1- barrels, 2- outside diameters areInternal diameter isPipe
Material, 3- outside diameters areBar, 4- outside diameters areInternal diameter isMaterials in the tube, 5- is a diameter ofRotary press head.
Embodiment
Technical scheme is further described below by way of specific embodiment, but the protection of the present invention
Scope is not limited to these embodiments.Every guarantor that the present invention is included in without departing substantially from the change of present inventive concept or equivalent substitute
Within the scope of shield.
Embodiment 1：The preparation of gradient Mg-Zn alloy bars
(1) by mass ratio it is respectively Mg:Zn=95:5、Mg:Zn=90:10 and Mg:Zn=80:20 Mg powder, Zn powder mix
Close uniformly, obtain the Mg-Zn mixed-powders of three kinds of different proportions；Wherein, Mg powder, the granularity of Zn powder are 20 μm~50 μm.
(2) it is Mg by mass ratio in step (1) under conditions of forcing press press power is 100MPa:Zn=95:5 it is mixed
Powder is closed to be pressed intoBar, mass ratio Mg:Zn=90:10 mixed-powder is pressed into outside diameter
Internal diameter isMaterials in the tube, mass ratio Mg:Zn=80:20 mixed-powder is pressed into outside diameterInternal diameter is Materials in the tube.
(3) will be assembled through the compressing bar of step (2) and materials in the tube, internal layer isBar, intermediate layer is outer
Footpath isInternal diameter isMaterials in the tube, outer layer is that outside diameter isInternal diameter isMaterials in the tube, assembling
Loading internal diameter afterwards isBarrel in, the material of barrel is 1Cr18Ni9Ti, and the wall thickness of barrel is 20mm.
(4) it will be put into togerther in vacuum sintering furnace and sinter through step (3) barrel and material, sintering temperature is 660 DEG C.
(5) after step (4) sintering, vertical pressure is applied to barrel one end, the other end is with outside diameter's
Rotary press head carries out rotary squeezing, and under the action of pressure at right angle, the material of melting is overflowed from the through hole among rotary press head
And solidify, that is, obtain gradient Mg-Zn alloy bars；The a diameter of 5mm of interstitial hole of rotary press head, the rotating speed of rotary press head is 500r/
Min, extrusion speed 10mm/min.
Embodiment 2：The preparation method of gradient Mg-Zn alloy bars
As different from Example 1：
(1) it is Mg by mass ratio:Zn=95:5 mixed-powder is pressed intoBar；Mass ratio is Mg:Zn=
90:10 mixed-powder is pressed into outside diameterInternal diameter isMaterials in the tube；Mass ratio is Mg:Zn=80:20
Mixed-powder is pressed into outside diameterInternal diameter isMaterials in the tube.
(2) forcing press press power is 300MPa.
(3) compressing bar and materials in the tube assembling, internal layer areBar, intermediate layer is that outside diameter isInternal diameter isMaterials in the tube, outer layer is that outside diameter isInternal diameter isMaterials in the tube, filled after assembling
Entering internal diameter isBarrel in.
(4) sintered in gas-protecting sintering stove, sintering temperature is 700 DEG C.
(5) outside diameter of rotary press head isThe a diameter of 20mm of interstitial hole of rotary press head, the rotating speed of rotary press head
For 700r/min, extrusion speed 15mm/min.
Embodiment 3：The synthetic method of Mg (Zn)-MgSb intermetallic compound structure materials
As different from Example 1：
(1) it is Mg by mass ratio:Zn=95:5 mixed-powder is pressed intoBar；Mass ratio is Mg:Zn=
90:10 Mg-Zn mixed-powders are pressed into outside diameter and areInternal diameter isMaterials in the tube；Mass ratio is Mg:Zn=
80:20 mixed-powder is pressed into outside diameterInternal diameter isMaterials in the tube.
(2) forcing press press power is 600MPa.
(3) compressing bar and materials in the tube assembling, internal layer areBar, intermediate layer is that outside diameter is
Internal diameter isMaterials in the tube, outer layer is that outside diameter isInternal diameter isMaterials in the tube, after assembling load internal diameter beBarrel in.
(4) sintered in gas-protecting sintering stove, sintering temperature is 750 DEG C.
(5) outside diameter of rotary press head isThe a diameter of 30mm of interstitial hole of rotary press head, the rotating speed of rotary press head
For 1000r/min, extrusion speed 20mm/min.
Claims (6)
1. a kind of preparation method of gradient Mg-Zn alloy bars, it is characterised in that comprise the following steps：
(1) it is respectively Mg by mass ratio:Zn=95:5、Mg:Zn=90:10 and Mg:Zn=80:20 Mg powder, the mixing of Zn powder are equal
It is even, obtain three kinds of different qualities than Mg-Zn mixed-powders；
(2) it is Mg by mass ratio in step (1):Zn=95:5 Mg-Zn mixed-powders load mould, are pressed on forcing pressBar；It is Mg by mass ratio:Zn=90:10 Mg-Zn mixed-powders load mould, and outside diameter is pressed on forcing press
ForInternal diameter isMaterials in the tube；It is Mg by mass ratio:Zn=80:20 Mg-Zn mixed-powders load mould, in forcing press
On be pressed into outside diameter and beInternal diameter isMaterials in the tube；
(3) will be assembled through the compressing bar of step (2) and materials in the tube, internal layer is that outside diameter isBar, intermediate layer is outside diameter
ForInternal diameter isMaterials in the tube, outer layer is that outside diameter isInternal diameter isMaterials in the tube, after assembling load internal diameter beSteel
In barrel processed；
(4) it will be put into togerther in sintering furnace and sinter through step (3) barrel and materials in the tube, bar, sintering temperature is 660-750 DEG C；
(5) after step (4) sintering, vertical pressure is applied to barrel one end, the other end is with outside diameterRotary press head into
Row rotary squeezing, the rotary press head are equipped with through hole along central axis direction, and the rubbing action of rotary press head and storeroom makes contact
The material in region is in molten condition, and under the action of pressure at right angle, the material of melting is overflowed from the through hole among rotary press head
And solidify, that is, obtain gradient Mg-Zn alloy bars.
2. the preparation method of gradient Mg-Zn alloy bars according to claim 1, it is characterised in that：In the step (1),
Mg powder, the granularity of Zn powder are 20 μm~50 μm.
3. the preparation method of gradient Mg-Zn alloy bars according to claim 1, it is characterised in that：In the step (2)
The quality of three kinds of pressed powders is equal, and A is 10~50mm, and B is 14~71mm, and C is 17~87mm；Forcing press press power is
100MPa-600MPa。
4. the preparation method of gradient Mg-Zn alloy bars according to claim 1, it is characterised in that：Material in the step (3)
The material of cylinder is 1Cr18Ni9Ti, and the wall thickness of barrel is 20mm.
5. the preparation method of gradient Mg-Zn alloy bars according to claim 1, it is characterised in that：Burnt in the step (4)
Freezing of a furnace is vacuum sintering furnace or gas-protecting sintering stove.
6. the preparation method of gradient Mg-Zn alloy bars according to claim 1, it is characterised in that：In the step (5),
Through-hole diameter is 5~30mm, and the rotating speed of rotary press head is 500~1000r/min, and extrusion speed is 10~20mm/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711185027.2A CN107937782B (en) | 2017-11-23 | 2017-11-23 | A kind of preparation method of gradient Mg-Zn alloy bar |
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|---|---|---|---|
| CN201711185027.2A CN107937782B (en) | 2017-11-23 | 2017-11-23 | A kind of preparation method of gradient Mg-Zn alloy bar |
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| CN107937782A true CN107937782A (en) | 2018-04-20 |
| CN107937782B CN107937782B (en) | 2019-06-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109998660A (en) * | 2019-04-09 | 2019-07-12 | 南通罗伯特医疗科技有限公司 | Degradable magnesium kirsite bone plate and its increasing material manufacturing device and method |
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- 2017-11-23 CN CN201711185027.2A patent/CN107937782B/en not_active Expired - Fee Related
Patent Citations (8)
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| CN1360980A (en) * | 2000-12-28 | 2002-07-31 | 北京有色金属研究总院 | Extrusion process of bimetallic composite material |
| US20060249372A1 (en) * | 2005-04-11 | 2006-11-09 | Intematix Corporation | Biased target ion bean deposition (BTIBD) for the production of combinatorial materials libraries |
| CN102093148A (en) * | 2010-12-06 | 2011-06-15 | 西北有色金属研究院 | Palladium-ruthenium/aluminum-magnesium composite metal wire and preparation method thereof |
| CN103085395A (en) * | 2012-12-25 | 2013-05-08 | 湖北工业大学 | Cu-Ti2 AlC functionally gradient material and preparation method thereof |
| CN104308353A (en) * | 2014-08-21 | 2015-01-28 | 中国科学技术大学 | Surface roughened bar explosive pressing fit method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109998660A (en) * | 2019-04-09 | 2019-07-12 | 南通罗伯特医疗科技有限公司 | Degradable magnesium kirsite bone plate and its increasing material manufacturing device and method |
| CN109998660B (en) * | 2019-04-09 | 2023-12-19 | 南通罗伯特医疗科技有限公司 | Degradable magnesium-zinc alloy bone fracture plate and additive manufacturing device and method thereof |
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| CN107937782B (en) | 2019-06-11 |
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