CN108441732A - A kind of Nano diamond particle reinforced magnesium base compound material and preparation method thereof - Google Patents
A kind of Nano diamond particle reinforced magnesium base compound material and preparation method thereof Download PDFInfo
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- CN108441732A CN108441732A CN201810260324.7A CN201810260324A CN108441732A CN 108441732 A CN108441732 A CN 108441732A CN 201810260324 A CN201810260324 A CN 201810260324A CN 108441732 A CN108441732 A CN 108441732A
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- nano diamond
- diamond particle
- base compound
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- compound material
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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
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
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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
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
- C22C1/1047—Alloys containing non-metals starting from a melt by mixing and casting liquid metal matrix composites
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
Abstract
The invention discloses a kind of Nano diamond particle reinforced magnesium base compound materials and preparation method thereof, and the preparation method comprises the following steps:(1) Nano diamond particle is added in ethyl alcohol, then ultrasonic vibration dispersion is stirred, magnesium alloy powder is added while stirring, obtains mixed solution;(2) vacuum drying after mixed solution Centrifugal dispersion is obtained into mixed-powder;(3) mixed-powder is subjected to hot extrusion, obtains presoma bar;(4) another that magnesium alloy powder is taken to carry out melting, it is passed through N in fusion process2And SF6Gaseous mixture is protected, and Matrix Solution is obtained;(5) presoma bar is added in Matrix Solution and is melted, stirred 30min, be then cast into base, hot extrusion obtains As-extruded Nano diamond particle reinforced magnesium base compound material bar.Nano diamond particle is evenly distributed in magnesium alloy substrate in composite material prepared by the present invention, and there is effective interface cohesion, mechanical property to significantly improve.
Description
Technical field
The present invention relates to field of material technology, more particularly to a kind of Nano diamond particle reinforced magnesium base compound material and its
Preparation method.
Background technology
Magnesium alloy has high specific strength, high-damping, a series of excellent characteristics such as excellent electromagnetic wave shielding, in army
Thing, aerospace and industrial circle are gradually widely used.But for magnesium-based composite material, by selecting each
The hard reinforcement that aspect is had excellent performance is added in metallic matrix, then when suitable technique being selected to be prepared, and can be obtained
Compared to the more excellent composite material of matrix alloy comprehensive performance.
In the research of early period, researcher has selected different types of material as reinforcement, has carried out composite material
Preparation, including SiC micron particles, antifungin/al whisker etc., during selective enhancement body, primary consideration factor is
The compatibility of reinforcement and matrix, i.e. crucial interfacial effect;No matter which kind of preparation method is used, will ensure reinforcement and base
The effective interface of body combines, rather than generates other negative effects, as the chemical reaction of reinforcement and matrix generates brittleness production
Object or reinforcement just do not realize effective interface cohesion with matrix.Because for metal-base composites, interface exists
Play vital role in the performance of material.The reinforcing effect of material is depended on effectively to be passed by interface progress load
It passs.Toughness is influenced by interface crack deflection, and plasticity is similarly subjected to the release of interface vicinity peak stress.Chu et al.
When studying carbon nanotube reinforced copper-base composite material, nanotube and matrix copper are effectively improved by incorporating metal chromium
The performance of interface bonding state, material significantly improves.
Next, is exactly the uniformly dispersed of reinforcement, and the dispersibility of heterogeneous reinforcement is very crucial to the performance of material.It is logical
Include stirring casting frequently with different preparation processes, method of impregnation, the effectively dispersion reinforcement such as powder metallurgic method is in the base
Distribution.But for nano particle, due to existing Van der Waals force between sub-micron-powder, electrostatic attraction, what image force generated
The factors such as electrostatic attraction and liquid bridge power easily generate reunion.
Therefore, during preparing nano particle enhanced magnesium-based composite material, it should ensure these ultra-fine reinforcements
Grain can effectively be disperseed in the base, ensured to realize effective interface cohesion between reinforcement and matrix again, just must
Corresponding technique is targetedly taken, to which qualified material be prepared, to meet its application under actual state.
Invention content
In order to solve problems in the prior art, it is multiple that an embodiment of the present invention provides a kind of Nano diamond particle reinforced Mg-bases
The preparation method of condensation material.The technical solution is as follows:
On the one hand, a kind of preparation method of Nano diamond particle reinforced magnesium base compound material, includes the following steps:
(1) Nano diamond particle is added in ethyl alcohol, then ultrasonic vibration dispersion is stirred, is added while stirring
Magnesium alloy powder obtains mixed solution;
(2) vacuum drying after mixed solution Centrifugal dispersion that step (1) obtains is obtained into mixed-powder;
(3) mixed-powder for obtaining step (2) carries out hot extrusion, obtains presoma bar;
(4) another that magnesium alloy powder is taken to carry out melting, it is passed through N in fusion process2And SF6Gaseous mixture is protected, and matrix is obtained
Solution;
(5) presoma bar prepared by step (3) is added in Matrix Solution and is melted, stirred 30min, be then cast into
Base, hot extrusion obtain As-extruded Nano diamond particle reinforced magnesium base compound material bar.
Further, by quality ratio, the magnesium alloy powder total amount used in step (1) and step (4):Nano diamond
Grain=100:1.
Further, the magnesium alloy powder used in step (1) and step (4) is Mg-Zn-Zr alloy powders, wherein including
5.1wt% zinc and 0.18wt% zirconiums, remaining is magnesium.
Further, the extrusion ratio of hot extrusion is 15 in step (5):1, squeeze temperature 523K.
Further, the extrusion ratio of hot extrusion is 15 in step (3):1, temperature 523K is squeezed, after hot extrusion
Obtain the presoma bar of diameter 24mm.
Further, the rotating speed of Centrifugal dispersion is 5000r/min, centrifugation time 15min in step (2).
Further, speed of agitator is 300r/min in step (1).
Further, drying temperature 333K, drying time 3h in step (2).
Further, ultrasonic time 30min in step (1).
On the other hand, a kind of Nano diamond particle reinforced magnesium base compound material contains nanogold by percentage to the quality
Hard rock 0.1%, zinc 5.1%, zirconium 0.18%, remaining is magnesium.
The advantageous effect that technical solution provided in an embodiment of the present invention is brought is:The Nano diamond particle enhancing of the present invention
Magnesium-based composite material and preparation method thereof realizes that nano particle is uniform in magnesium alloy substrate using powder metallurgy preparation technique
Dispersion;For the nanometer reinforcement particle for being easy to reunite, using the processing method disperseed in the liquid phase;Melting processing
The interface cohesion problem of nano particle and reinforcement particle.In the Nano diamond particle reinforced magnesium base compound material being prepared
Nano diamond particle is evenly distributed in magnesium alloy substrate, and there is effective interface cohesion, mechanical property to significantly improve.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is magnesium alloy powder granule-morphology figure in the embodiment of the present invention;
Fig. 2 is Nano diamond particle surface shape appearance figure in the embodiment of the present invention;
Fig. 3 is scatter diagram of the Nano diamond particle in matrix magnesium alloy in the embodiment of the present invention;
Fig. 4 is Nano diamond particle in the embodiment of the present invention, matrix magnesium alloy and precipitated phase MgZn2Alternate interface knot
Close figure.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment
The Nano diamond particle reinforced magnesium base compound material of the present invention is prepared with the following method:
It weighs 0.1g Nano diamond particles to be added in ethyl alcohol, ultrasonic vibration disperses 30min, then fills using mechanical agitation
It sets and is stirred, speed of agitator 300r/min is added 25g magnesium alloy powders, obtains mixed solution while stirring.
By mixed solution with 5000r/min, Centrifugal dispersion 15min, then dried with temperature 333K in vacuum drying oven
3h obtains mixed-powder.
Mixed-powder is added in extrusion die and carries out hot extrusion, extrusion ratio 15:1, squeeze temperature 523K, hot extrusion
The presoma bar of diameter 24mm is obtained after processing.
Melting is carried out to remaining 75g magnesium alloy powders in smelting furnace, N is passed through in fusion process2And SF6Gaseous mixture into
Row protection is handled, and is gradually started to stir after magnesium alloy powder is at liquid state, is obtained Matrix Solution.
Presoma bar is added in Matrix Solution and is melted, continues to stir 30min, is then cast into base, further hot extrusion
Pressure processing, extrusion ratio 15:1, temperature 523K is squeezed, As-extruded Nano diamond particle reinforced magnesium base compound material bar is obtained.
Use magnesium alloy powder (Mg-Zn-Zr) as matrix in present invention experiment, 50 μm of powder size, primary chemical at
It is divided into 5.1wt%Zn, 0.18wt%Zr, macroscopic view and microscopic appearance are as shown in Figure 1.Nano diamond particle is reinforcement, granularity
Size is 6.7nm, and microstructure is as shown in Figure 2.
Structure observation is carried out to the As-extruded Nano diamond particle reinforced magnesium base compound material bar that experiment is prepared
And Mechanics Performance Testing.The dispersibility (Fig. 3) of reinforcement particle in the base is analyzed by scanning electron microscope (SEM), passes through transmission
The interface cohesion behavior (Fig. 4) of Electronic Speculum (TEM) observation analysis matrix and nano particle.The Nano diamond particle that will be prepared
Enhancing magnesium-based composite material is processed into standard tensile, compression sample, has carried out stretching on electronic universal material experiment-machine, compress
Test experiments, and obtain corresponding material mechanical performance.
As seen from Figure 3, nano particle has obtained highly uniform distribution in the base, thus also indicates that the ultrasound point at initial stage
Dissipating the techniques such as processing effectively realizes reinforcement being uniformly distributed in the base.
It is non-coherent structural, nevertheless, by scheming by Fig. 4 a as it can be seen that occurring wrong row between Nano diamond particle and matrix
4b can see, the MgZn being precipitated in Nano diamond particle and matrix2Mutually complete coherence realizes effective interface cohesion.
The non-coherent structural of Nano diamond particle and matrix alloy, it is meant that matrix and Nano diamond particle combination effect are poor, no
The effects such as effective load transmission can be realized, nevertheless, the second phase MgZn being precipitated in matrix2Mutually with Nano diamond with altogether
Lattice structure matching, this also from connect it is effective realize the Nano diamond particle that is added in experiment can with matrix in addition to
Except effective dispersion, while it can realize and be effectively combined, so as to effectively material be hindered to be moved in deformation process
Dislocation, and significantly realize the reinforcing of composite property.
It can be seen that preparation process through the invention, efficiently solves Nano diamond particle reinforced Mg-base composite wood
The technology of preparing problem of material.Although it is only 0.1wt%, the comprehensive mechanical property of material to be added to Nano diamond granule content
But it is significantly improved.The mechanical property of Nano diamond particle reinforced magnesium base compound material is as shown in table 1.
1 Nano diamond particle reinforced magnesium base compound material mechanical property table of table
Material | σ0.2/MPa | σb/MPa | δ (%) | CYS(MPa) | UCS(MPa) | δ (%) |
ZK60 | 339.1 | 368. | 10.2 | 300 | 527 | 16.8 |
0.1%ND/ZK60 | 390.3 | 418.4 | 6.2 | 433 | 484 | 10.1 |
By table 1 as it can be seen that comparing matrix alloy, the mechanical property of Nano diamond particle reinforced magnesium base compound material obtains
Significant to improve, tensile yield strength increases to 390.3MPa from 339.1MPa, while the stretch percentage elongation of material is not notable
It reduces, stills remain in 6.2%;Compression yield strength (compression yield stress, CYS) is carried compared to matrix alloy
It is high by nearly 30%;Simultaneously, asymmetry is surrendered in the significant tension and compression that the magnesium alloy prepared compared to traditional handicraft is shown
(asymmetry is surrendered in tension and compression to feature:That is compression yield strength and tensile yield strength ratio).The nanometer obtained through the invention
Diamond particles enhancing magnesium-based composite material tension and compression surrender asymmetry obtains the improvement of highly significant, i.e., compression yield strength with
Tensile yield strength ratio reaches 1.11, and the improvement of this respect performance will be to this material in Practical Project condition, especially
It is the magnesium alloy materials of tension and compression load to be recycled by high intensity, such as the application of crossbeam component will play very crucial effect.
The Nano diamond particle reinforced magnesium base compound material and preparation method thereof of the present invention, in order to realize that nano particle exists
It is evenly dispersed in magnesium alloy substrate, use powder metallurgy preparation technique;The reinforcement particle of conventional micron grade size is usual
It is to realize that the evenly dispersed of reinforcement mixes by way of carrying out ball-milling treatment with matrix alloy powder, and roll into a ball for easy
Poly- nanometer reinforcement particle uses the mode for carrying out decentralized processing in the liquid phase, i.e., soaks superfine powder in the liquid phase,
Then carry out ultrasonic disperse and centrifugal mixer processing so that the powder reunited together is opened under these active forces, is formed
Independent primary partical or smaller aggregate, and enter magnesium alloy powder by amount addition in the later stage, realize uniformly mixing, then
It dries again, extrusion process obtains blank;For the interface cohesion problem of nano particle and reinforcement particle, then take molten
Melt processing mode, i.e., matrix magnesium alloy is heated to fusing point or more, using N2And SF6Gas shield is handled, and stirring simultaneously will early period system
Standby blank incorporates in matrix, casts after stirring evenly, desired material is prepared.The Nano diamond particle being prepared
Nano diamond particle is evenly distributed in magnesium alloy substrate in enhancing magnesium-based composite material, has effective interface cohesion, power
Performance is learned to significantly improve.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. the preparation method of Nano diamond particle reinforced magnesium base compound material, which is characterized in that include the following steps:
(1) Nano diamond particle is added in ethyl alcohol, then ultrasonic vibration dispersion is stirred, magnesium is added while stirring and closes
Bronze end, obtains mixed solution;
(2) vacuum drying after the mixed solution Centrifugal dispersion that step (1) obtains is obtained into mixed-powder;
(3) mixed-powder for obtaining step (2) carries out hot extrusion, obtains presoma bar;
(4) another that magnesium alloy powder is taken to carry out melting, it is passed through N in fusion process2And SF6Gaseous mixture is protected, and it is molten to obtain matrix
Liquid;
(5) the presoma bar prepared by step (3) is added in described matrix solution and is melted, stirred 30min, then cast
At base, hot extrusion obtains As-extruded Nano diamond particle reinforced magnesium base compound material bar.
2. the preparation method of Nano diamond particle reinforced magnesium base compound material as described in claim 1, which is characterized in that with
Mass ratio meter, the magnesium alloy powder total amount used in the step (1) and step (4):Nano diamond particle=100:1.
3. the preparation method of Nano diamond particle reinforced magnesium base compound material as claimed in claim 2, which is characterized in that institute
It is Mg-Zn-Zr alloy powders to state magnesium alloy powder used in step (1) and step (4), wherein comprising 5.1wt% zinc and
0.18wt% zirconiums, remaining is magnesium.
4. the preparation method of Nano diamond particle reinforced magnesium base compound material as claimed in claim 3, which is characterized in that institute
The extrusion ratio for stating hot extrusion in step (5) is 15:1, squeeze temperature 523K.
5. the preparation method of Nano diamond particle reinforced magnesium base compound material as claimed in claim 4, which is characterized in that institute
The extrusion ratio for stating hot extrusion in step (3) is 15:1, temperature 523K is squeezed, before obtaining diameter 24mm after hot extrusion
Drive body bar.
6. the preparation method of Nano diamond particle reinforced magnesium base compound material as claimed in claim 5, which is characterized in that institute
The rotating speed for stating Centrifugal dispersion in step (2) is 5000r/min, centrifugation time 15min.
7. the preparation method of Nano diamond particle reinforced magnesium base compound material as claimed in claim 6, which is characterized in that institute
It is 300r/min to state speed of agitator in step (1).
8. the preparation method of Nano diamond particle reinforced magnesium base compound material as claimed in claim 7, which is characterized in that institute
State drying temperature 333K, drying time 3h in step (2).
9. the preparation method of Nano diamond particle reinforced magnesium base compound material as claimed in claim 8, which is characterized in that institute
State ultrasonic time 30min in step (1).
10. a kind of Nano diamond particle reinforced magnesium base compound material, which is characterized in that by percentage to the quality, contain nanometer
Diamond 0.1%, zinc 5.1%, zirconium 0.18%, remaining is magnesium.
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110551909A (en) * | 2019-09-30 | 2019-12-10 | 青海大学 | Method for improving heat conductivity of magnesium-based composite material by using nano diamond and magnesium-based composite material |
CN113732311A (en) * | 2021-09-03 | 2021-12-03 | 长沙学院 | Nano-diamond enhanced biological magnesium alloy and preparation method thereof |
CN114632937A (en) * | 2022-03-07 | 2022-06-17 | 青海大学 | High-strength ZK60 magnesium alloy, magnesium-based composite material and preparation method |
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CN1441075A (en) * | 2003-04-03 | 2003-09-10 | 上海交通大学 | Prepn process of particle-reinforced Mg-base composite mateiral |
CN105624457A (en) * | 2016-03-22 | 2016-06-01 | 北京工业大学 | Graphene enhanced magnesium-based composite and preparing method thereof |
CN107653409A (en) * | 2017-09-19 | 2018-02-02 | 安徽恒利增材制造科技有限公司 | A kind of high intensity zinc-aluminium magnesium alloy ingot and preparation method thereof |
CN107675056A (en) * | 2017-09-19 | 2018-02-09 | 安徽恒利增材制造科技有限公司 | A kind of high-strength aluminium-magnesium alloy cast ingot and preparation method thereof |
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2018
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN1441075A (en) * | 2003-04-03 | 2003-09-10 | 上海交通大学 | Prepn process of particle-reinforced Mg-base composite mateiral |
CN105624457A (en) * | 2016-03-22 | 2016-06-01 | 北京工业大学 | Graphene enhanced magnesium-based composite and preparing method thereof |
CN107653409A (en) * | 2017-09-19 | 2018-02-02 | 安徽恒利增材制造科技有限公司 | A kind of high intensity zinc-aluminium magnesium alloy ingot and preparation method thereof |
CN107675056A (en) * | 2017-09-19 | 2018-02-09 | 安徽恒利增材制造科技有限公司 | A kind of high-strength aluminium-magnesium alloy cast ingot and preparation method thereof |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110551909A (en) * | 2019-09-30 | 2019-12-10 | 青海大学 | Method for improving heat conductivity of magnesium-based composite material by using nano diamond and magnesium-based composite material |
CN113732311A (en) * | 2021-09-03 | 2021-12-03 | 长沙学院 | Nano-diamond enhanced biological magnesium alloy and preparation method thereof |
CN114632937A (en) * | 2022-03-07 | 2022-06-17 | 青海大学 | High-strength ZK60 magnesium alloy, magnesium-based composite material and preparation method |
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