CN104073674B - A kind of preparation method of Graphene aluminum matrix composite - Google Patents

A kind of preparation method of Graphene aluminum matrix composite Download PDF

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CN104073674B
CN104073674B CN201410280611.6A CN201410280611A CN104073674B CN 104073674 B CN104073674 B CN 104073674B CN 201410280611 A CN201410280611 A CN 201410280611A CN 104073674 B CN104073674 B CN 104073674B
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ball
graphene
matrix composite
aluminum matrix
obtains
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CN201410280611.6A
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CN104073674A (en
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武高辉
肖瑞
武强
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哈尔滨翔科新材料有限公司
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Abstract

A kind of preparation method of Graphene aluminum matrix composite.The present invention relates to technical field of new material preparation, particularly relate to a kind of preparation method of Graphene aluminum matrix composite.The present invention is for solving low and in matrix material, Graphene volume fraction the is low problem of existing Graphene aluminum matrix composite intensity.Method: one, prepare aluminum metal powder; Two, composite granule is prepared; Three, precast body is prepared; Four, smelting aluminum liquid; Five, utilize Pressure Infiltration to be seeped in precast body gap by aluminium immersion, pressurize, after mould cooling, the demoulding obtains Graphene aluminum matrix composite.The Graphene aluminum matrix composite uniform composition that preparation method of the present invention obtains, density is high, and cost is lower, and size is larger.

Description

A kind of preparation method of Graphene aluminum matrix composite
Technical field
The present invention relates to technical field of new material preparation, particularly relate to a kind of preparation method of Graphene aluminum matrix composite.
Background technology
Graphene is a kind of New Two Dimensional material, has the excellent mechanical performance equaling to carbon nanotube, also have the heat physical properties that low thermal coefficient of expansion, high heat conductance etc. are excellent, and quantum effect is peculiar simultaneously.Therefore by Graphene and aluminum metal compound, prepare Graphene aluminum matrix composite, the excellent properties such as high-strength light, low-thermal-expansion and high heat conductance will be had, meet the demand in the structural parts such as actual space flight and aviation and microelectronics Packaging field.
The research of current Graphene aluminum matrix composite is because of the higher and preparation difficulty of Graphene cost, and therefore not yet can carry out extensive research, research is all comparatively rare both at home and abroad.Domestic Northeastern University Guan Renguo etc. adopt mechanical mixing method to prepare Graphene-Cu-aluminum matrix composite, and hardness comparatively matrix improves 40%.Shanghai Communications University delivers research people such as JingyueWang and shows on ScriptaMaterialia, adopt the method for powder metallurgy prepare Graphene aluminum matrix composite intensity comparatively matrix improve 62%, reach 249MPa.The Graphene aluminum matrix composite that the research team of Aviation Industry of China Materials Research Laboratories utilizes the method for ball milling and powder metallurgy to prepare comparatively matrix strength improves 25%, and unit elongation does not decline.The investigators such as external StephenF.Bartolucei obtain Graphene aluminum matrix composite by hot isostatic pressing after ball milling and crimp, and intensity is lower than fine aluminium intensity.Aforesaid method is prepared matrix material and is mainly used stirring casting method, or powder metallurgic method, Graphene volume fraction low (being all less than 1%) in obtained matrix material.
Summary of the invention
The present invention is for solving low and in matrix material, Graphene volume fraction the is low problem of existing Graphene aluminum matrix composite intensity, and provides a kind of preparation method of Graphene aluminum matrix composite.
The preparation method of a kind of Graphene aluminum matrix composite of the present invention carries out according to following steps:
One, fine aluminium powder or Al alloy powder are placed in ball grinder, after vacuumizing, are filled with protective gas, then carry out ball milling, the mass ratio of abrading-ball and material is (3 ~ 5): 1, Ball-milling Time is 2h ~ 3h, and rotating speed is 120rpm ~ 250rpm, obtains aluminum metal powder;
The granularity of described fine aluminium powder is 25 order ~ 500 orders;
The granularity of described Al alloy powder is 25 order ~ 500 orders;
Two, the aluminum metal powder that Graphene and step one obtain is placed in ball grinder, after vacuumizing, is filled with protective gas, then carry out ball milling, the mass ratio of abrading-ball and material is (3 ~ 10): 1, Ball-milling Time is 2h ~ 6h, and rotating speed is 200rpm ~ 400rpm, obtains composite granule;
Three, the composite granule that step 2 obtains is colded pressing make precast body;
Four, melting 3h ~ 4h under temperature 700 ~ 900 DEG C of conditions by fine aluminium block or aluminium alloy block, obtains aluminium liquid;
Five, the precast body that step 3 obtains is placed in mould, then mould is warming up to 500 ~ 700 DEG C and carries out preheating, the method of recycling Pressure Infiltration, aluminium immersion step 4 obtained is seeped in precast body gap, keep pressure 0.5h ~ 1h, after mould cooling, the demoulding obtains Graphene aluminum matrix composite;
In Graphene aluminum matrix composite, the volume parts of the aluminum metal powder that step one obtains is 35% ~ 45%;
In Graphene aluminum matrix composite, the volume parts of the Graphene described in step 2 is 1% ~ 20%.
Advantage of the present invention is as follows:
The preparation method of Graphene aluminum matrix composite provided by the invention, the Graphene aluminum matrix composite of different volumes mark can be prepared according to actual demands of engineering, in matrix material, the volume fraction of Graphene is up to 20%, compare and improve nearly 1 ~ 2 order of magnitude with existing method volume fraction, known in this field, in matrix material, the volume fraction of Graphene is higher, and the heat conductivility of matrix material is better, thermal expansivity lower (when material is heated, size distortion is little).Preparation technology is simple, and cost is low and material density is high, can reach more than 99%, and overcome graphite and the non-wetted deficiency of aluminum metal, the application for Graphene aluminum matrix composite provides feasible technical scheme.The Graphene aluminum matrix composite prepared, has the advantage such as high strength, low thermal coefficient of expansion, and the intensity of the Graphene aluminum matrix composite that the present invention prepares comparatively matrix improves 2.5 times.
Accompanying drawing explanation
Fig. 1 is the fracture apperance SEM photo of the Graphene aluminum matrix composite that test four prepares;
Fig. 2 is the change curve of Young's modulus with Graphene volume fraction of the Graphene aluminum matrix composite that test three to five prepares; Wherein a is theoretical value; B is measured value;
Fig. 3 is Graphene volume fraction and three-point bending strength change curve in the Graphene aluminum matrix composite for preparing of test three to five.
Embodiment
Embodiment one: the preparation method of a kind of Graphene aluminum matrix composite of present embodiment carries out according to following steps:
One, fine aluminium powder or Al alloy powder are placed in ball grinder, after vacuumizing, are filled with protective gas, then carry out ball milling, the mass ratio of abrading-ball and material is (3 ~ 5): 1, Ball-milling Time is 2h ~ 3h, and rotating speed is 120rpm ~ 250rpm, obtains aluminum metal powder;
The granularity of described fine aluminium powder is 25 order ~ 500 orders;
The granularity of described Al alloy powder is 25 order ~ 500 orders;
Two, the aluminum metal powder that Graphene and step one obtain is placed in ball grinder, after vacuumizing, is filled with protective gas, then carry out ball milling, the mass ratio of abrading-ball and material is (3 ~ 10): 1, Ball-milling Time is 2h ~ 6h, and rotating speed is 200rpm ~ 400rpm, obtains composite granule;
Three, the composite granule that step 2 obtains is colded pressing make precast body;
Four, melting 3h ~ 4h under temperature 700 ~ 900 DEG C of conditions by fine aluminium block or aluminium alloy block, obtains aluminium liquid;
Five, the precast body that step 3 obtains is placed in mould, then mould is warming up to 500 ~ 700 DEG C and carries out preheating, the method of recycling Pressure Infiltration, aluminium immersion step 4 obtained is seeped in precast body gap, keep pressure 0.5h ~ 1h, after mould cooling, the demoulding obtains Graphene aluminum matrix composite;
In Graphene aluminum matrix composite, the volume parts of the aluminum metal powder that step one obtains is 35% ~ 45%;
In Graphene aluminum matrix composite, the volume parts of the Graphene described in step 2 is 1% ~ 20%.
The preparation method of the Graphene aluminum matrix composite that present embodiment provides, the Graphene aluminum matrix composite of different volumes mark can be prepared according to actual demands of engineering, in matrix material, the volume fraction of Graphene is up to 20%, compare and improve nearly 1 ~ 2 order of magnitude with existing method volume fraction, known in this field, in matrix material, the volume fraction of Graphene is higher, and the heat conductivility of matrix material is better, thermal expansivity lower (when material is heated, size distortion is little).Preparation technology is simple, and cost is low and material density is high, can reach more than 99%, and overcome graphite and the non-wetted deficiency of aluminum metal, the application for Graphene aluminum matrix composite provides feasible technical scheme.The Graphene aluminum matrix composite prepared, has the advantage such as high strength, low thermal coefficient of expansion, and the intensity of the Graphene aluminum matrix composite that present embodiment prepares comparatively matrix improves 2.5 times.
Embodiment two: present embodiment and embodiment one unlike: the Al alloy powder described in step one is a kind of or wherein several mixture in Al-Si series alloy powder, Al-Cu series alloy powder, Al-Mg series alloy powder, Al-Si-Cu series alloy powder, Al-Si-Mg series alloy powder, Al-Cu-Mg alloy powder, Al-Si-Cu-Mg series alloy powder and Al-Zn-Mg series alloy powder.Other step and parameter identical with embodiment one.
Embodiment three: present embodiment and embodiment one or two are a kind of or wherein several mixture in steel ball or Ceramic Balls unlike: the abrading-ball described in step one.Other step and parameter identical with embodiment one or two.
Embodiment four: one of present embodiment and embodiment one to three unlike: the protective gas described in step one is N 2, a kind of or wherein several mixture in Ar, He.Other step and parameter identical with one of embodiment one to three.
Embodiment five: one of present embodiment and embodiment one to four unlike: the abrading-ball described in step 2 is steel ball or Ceramic Balls.Other step and parameter identical with one of embodiment one to four.
Embodiment six: one of present embodiment and embodiment one to five unlike: the protective gas described in step 2 is N 2, a kind of or wherein several mixture in Ar, He.Other step and parameter identical with one of embodiment one to five.
Embodiment seven: one of present embodiment and embodiment one to six unlike: ball milling described in step one adopts the positive counter-cyclical alternately, the ball milling method of intermediate suspension, and single just transfers 20min ~ 40min to, single reversing time is 20min ~ 40min, and the intermediate suspension time is 20min ~ 40min.Other step and parameter identical with one of embodiment one to six.
Embodiment eight: one of present embodiment and embodiment one to seven unlike: ball milling described in step 2 adopts the positive counter-cyclical alternately, the ball milling method of intermediate suspension, and single just transfers 20min ~ 40min to, single reversing time is 20min ~ 40min, and the intermediate suspension time is 20min ~ 40min.Other step and parameter identical with one of embodiment one to seven.
Embodiment nine: one of present embodiment and embodiment one to eight unlike: the parameter of colding pressing described in step 3 is: pressure is 20MPa ~ 50MPa, dwell time 5min ~ 10min, and temperature is room temperature.Other step and parameter identical with one of embodiment one to eight.
Embodiment ten: one of present embodiment and embodiment one to nine unlike: the aluminium alloy block described in step 4 for Al-Si system alloy body be, Al-Cu system alloy body is, Al-Mg system alloy body is, Al-Si-Cu system alloy body is, Al-Si-Mg system alloy body is, Al-Cu-Mg alloy body be with Al-Si-Cu-Mg system alloy body be in a kind of or wherein several mixtures.Other step and parameter identical with one of embodiment one to nine.
Embodiment 11: one of present embodiment and embodiment one to ten unlike: the pressure of the Pressure Infiltration described in step 5 is 80MPa ~ 100MPa.Other step and parameter identical with one of embodiment one to ten.
Embodiment 12: one of present embodiment and embodiment one to ten one unlike: the Pressure Infiltration environment described in step 5 is in vacuum environment or in atmospheric environment.Other step and parameter identical with one of embodiment one to ten one.
Embodiment 13: one of present embodiment and embodiment one to ten two unlike: in the Graphene aluminum matrix composite described in step 5, the volume parts of the aluminum metal powder that step one obtains is 40%.Other step and parameter identical with one of embodiment one to ten two.
Embodiment 14: one of present embodiment and embodiment one to ten three unlike: the volume parts of the Graphene in the Graphene aluminum matrix composite described in step 5 in step 2 is 3% ~ 20%.Other step and parameter identical with one of embodiment one to ten three.
Embodiment 15: one of present embodiment and embodiment one to ten four unlike: the volume parts of the Graphene in the Graphene aluminum matrix composite described in step 5 in step 2 is 7% ~ 20%.Other step and parameter identical with one of embodiment one to ten four.
Embodiment 16: one of present embodiment and embodiment one to ten five unlike: the volume parts of the Graphene in the Graphene aluminum matrix composite described in step 5 in step 2 is 15% ~ 20%.Other step and parameter identical with one of embodiment one to ten five.
With following verification experimental verification beneficial effect of the present invention:
The preparation method of a kind of Graphene aluminum matrix composite of test one, this experiment carries out according to the following steps:
One, fine aluminium powder is placed in ball grinder, is filled with He after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 3:1, and Ball-milling Time is 2h, and rotating speed is 120rpm, obtains aluminum metal powder;
The granularity of described fine aluminium powder is 25 orders;
Described abrading-ball is GCr 15abrading-ball;
Two, the aluminum metal powder that Graphene and step one obtain is placed in ball grinder, is filled with He after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 3:1, and Ball-milling Time is 2h, and rotating speed is 200rpm, obtains composite granule;
Described abrading-ball is GCr 15abrading-ball;
Three, the composite granule that step 2 obtains is colded pressing make precast body;
Described parameter of colding pressing is: pressure is 20MPa, dwell time 5min, and temperature is room temperature 25 DEG C.
Four, by fine aluminium block melting 3h under temperature 800 DEG C of conditions, aluminium liquid is obtained;
Five, the precast body that step 3 obtains is placed in mould, then mould is warming up to 500 DEG C and carries out preheating, the method for recycling Pressure Infiltration, aluminium immersion step 4 obtained is seeped in precast body gap, keep pressure 0.5h, after mould cooling, the demoulding obtains Graphene aluminum matrix composite;
Pressure Infiltration environment described in step 5 is in vacuum environment;
The pressure of the Pressure Infiltration described in step 5 is 100MPa;
In Graphene aluminum matrix composite, the volume parts of the aluminum metal powder that step one obtains is 35%;
In Graphene aluminum matrix composite, the volume parts of the Graphene described in step 2 is 1%.
The preparation method of a kind of Graphene aluminum matrix composite of test two, this experiment carries out according to the following steps:
One, Al-20Si powdered alloy is placed in ball grinder, is filled with He after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 3:1, and Ball-milling Time is 150min, and rotating speed is 140rpm, obtains aluminum metal powder;
The granularity of described Al-20Si powdered alloy is 50 orders;
Described abrading-ball is GCr 15abrading-ball;
Two, the aluminum metal powder that Graphene and step one obtain is placed in ball grinder, is filled with He after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 3:1, and Ball-milling Time is 3h, and rotating speed is 250rpm, obtains composite granule;
Described abrading-ball is GCr 15abrading-ball;
Three, the composite granule that step 2 obtains is colded pressing make precast body;
Described parameter of colding pressing is: pressure is 25MPa, dwell time 6min, and temperature is room temperature 25 DEG C.
Four, by Al-20Si alloy block melting 3.5h under temperature 810 DEG C of conditions, aluminium liquid is obtained;
Five, the precast body that step 3 obtains is placed in mould, then mould is warming up to 600 DEG C and carries out preheating, the method for recycling Pressure Infiltration, aluminium immersion step 4 obtained is seeped in precast body gap, keep pressure 0.5h, after mould cooling, the demoulding obtains Graphene aluminum matrix composite;
Pressure Infiltration environment described in step 5 is in vacuum environment;
The pressure of the Pressure Infiltration described in step 5 is 80MPa;
In Graphene aluminum matrix composite, the volume parts of the aluminum metal powder that step one obtains is 40%;
In Graphene aluminum matrix composite, the volume parts of the Graphene described in step 2 is 5%.
The preparation method of a kind of Graphene aluminum matrix composite of test three, this experiment carries out according to the following steps:
One, Al-20Si powdered alloy is placed in ball grinder, is filled with He after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 3:1, and Ball-milling Time is 150min, and rotating speed is 140rpm, obtains aluminum metal powder;
The granularity of described Al-20Si powdered alloy is 50 orders;
Described abrading-ball is GCr 15abrading-ball;
Two, the aluminum metal powder that Graphene and step one obtain is placed in ball grinder, is filled with He after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 3:1, and Ball-milling Time is 3h, and rotating speed is 250rpm, obtains composite granule;
Described abrading-ball is GCr 15abrading-ball;
Three, the composite granule that step 2 obtains is colded pressing make precast body;
Described parameter of colding pressing is: pressure is 25MPa, dwell time 6min, and temperature is room temperature 25 DEG C.
Four, by Al-20Si alloy block melting 3.5h under temperature 810 DEG C of conditions, aluminium liquid is obtained;
Five, the precast body that step 3 obtains is placed in mould, then mould is warming up to 600 DEG C and carries out preheating, the method for recycling Pressure Infiltration, aluminium immersion step 4 obtained is seeped in precast body gap, keep pressure 0.5h, after mould cooling, the demoulding obtains Graphene aluminum matrix composite;
Pressure Infiltration environment described in step 5 is in vacuum environment;
The pressure of the Pressure Infiltration described in step 5 is 80MPa;
In Graphene aluminum matrix composite, the volume parts of the aluminum metal powder that step one obtains is 40%;
In Graphene aluminum matrix composite, the volume parts of the Graphene described in step 2 is 1%.
The preparation method of a kind of Graphene aluminum matrix composite of test four, this experiment carries out according to the following steps:
One, Al-20Si powdered alloy is placed in ball grinder, is filled with He after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 3:1, and Ball-milling Time is 150min, and rotating speed is 140rpm, obtains aluminum metal powder;
The granularity of described Al-20Si powdered alloy is 50 orders;
Described abrading-ball is GCr 15abrading-ball;
Two, the aluminum metal powder that Graphene and step one obtain is placed in ball grinder, is filled with He after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 3:1, and Ball-milling Time is 3h, and rotating speed is 250rpm, obtains composite granule;
Described abrading-ball is GCr 15abrading-ball;
Three, the composite granule that step 2 obtains is colded pressing make precast body;
Described parameter of colding pressing is: pressure is 25MPa, dwell time 6min, and temperature is room temperature 25 DEG C.
Four, by Al-20Si alloy block melting 3.5h under temperature 810 DEG C of conditions, aluminium liquid is obtained;
Five, the precast body that step 3 obtains is placed in mould, then mould is warming up to 600 DEG C and carries out preheating, the method for recycling Pressure Infiltration, aluminium immersion step 4 obtained is seeped in precast body gap, keep pressure 0.5h, after mould cooling, the demoulding obtains Graphene aluminum matrix composite;
Pressure Infiltration environment described in step 5 is in vacuum environment;
The pressure of the Pressure Infiltration described in step 5 is 80MPa;
In Graphene aluminum matrix composite, the volume parts of the aluminum metal powder that step one obtains is 40%;
In Graphene aluminum matrix composite, the volume parts of the Graphene described in step 2 is 3%.
The preparation method of a kind of Graphene aluminum matrix composite of test five, this experiment carries out according to the following steps:
One, Al-20Si powdered alloy is placed in ball grinder, is filled with He after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 3:1, and Ball-milling Time is 150min, and rotating speed is 140rpm, obtains aluminum metal powder;
The granularity of described Al-20Si powdered alloy is 50 orders;
Described abrading-ball is GCr 15abrading-ball;
Two, the aluminum metal powder that Graphene and step one obtain is placed in ball grinder, is filled with He after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 3:1, and Ball-milling Time is 3h, and rotating speed is 250rpm, obtains composite granule;
Described abrading-ball is GCr 15abrading-ball;
Three, the composite granule that step 2 obtains is colded pressing make precast body;
Described parameter of colding pressing is: pressure is 25MPa, dwell time 6min, and temperature is room temperature 25 DEG C.
Four, by Al-20Si alloy block melting 3.5h under temperature 810 DEG C of conditions, aluminium liquid is obtained;
Five, the precast body that step 3 obtains is placed in mould, then mould is warming up to 600 DEG C and carries out preheating, the method for recycling Pressure Infiltration, aluminium immersion step 4 obtained is seeped in precast body gap, keep pressure 0.5h, after mould cooling, the demoulding obtains Graphene aluminum matrix composite;
Pressure Infiltration environment described in step 5 is in vacuum environment;
The pressure of the Pressure Infiltration described in step 5 is 80MPa;
In Graphene aluminum matrix composite, the volume parts of the aluminum metal powder that step one obtains is 40%;
In Graphene aluminum matrix composite, the volume parts of the Graphene described in step 2 is 7%.
The preparation method of a kind of Graphene aluminum matrix composite of test six, this experiment carries out according to the following steps:
One, 3003 Al alloy powders are placed in ball grinder, are filled with He after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 4:1, and Ball-milling Time is 130min, and rotating speed is 150rpm, obtains aluminum metal powder;
The granularity of 3003 described Al alloy powders is 100 orders;
Described abrading-ball is GCr 15abrading-ball;
Two, the aluminum metal powder that Graphene and step one obtain is placed in ball grinder, is filled with He after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 3:1, and Ball-milling Time is 2h, and rotating speed is 300rpm, obtains composite granule;
Described abrading-ball is GCr 15abrading-ball;
Three, the composite granule that step 2 obtains is colded pressing make precast body;
Described parameter of colding pressing is: pressure is 30MPa, dwell time 5min, and temperature is room temperature 25 DEG C.
Four, by 3003 aluminium alloy blocks melting 3.5h under temperature 830 DEG C of conditions, aluminium liquid is obtained;
Five, the precast body that step 3 obtains is placed in mould, then mould is warming up to 600 DEG C and carries out preheating, the method for recycling Pressure Infiltration, aluminium immersion step 4 obtained is seeped in precast body gap, keep pressure 0.5h, after mould cooling, the demoulding obtains Graphene aluminum matrix composite;
Pressure Infiltration environment described in step 5 is in atmospheric environment;
The pressure of the Pressure Infiltration described in step 5 is 90MPa;
In Graphene aluminum matrix composite, the volume parts of the aluminum metal powder that step one obtains is 35%;
The volume parts 10% of the Graphene described in step 2 in Graphene aluminum matrix composite.
The preparation method of a kind of Graphene aluminum matrix composite of test seven, this experiment carries out according to the following steps:
One, 4043 Al alloy powders are placed in ball grinder, are filled with He after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 3:1, and Ball-milling Time is 150min, and rotating speed is 180rpm, obtains aluminum metal powder;
The granularity of 4043 described Al alloy powders is 120 orders;
Described abrading-ball is GCr 15abrading-ball;
Two, the aluminum metal powder that Graphene and step one obtain is placed in ball grinder, is filled with He after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 5:1, and Ball-milling Time is 4h, and rotating speed is 400rpm, obtains composite granule;
Described abrading-ball is GCr 15abrading-ball;
Three, the composite granule that step 2 obtains is colded pressing make precast body;
Described parameter of colding pressing is: pressure is 35MPa, dwell time 5min, and temperature is room temperature 25 DEG C.
Four, by 4043 aluminium alloy blocks melting 4h under temperature 825 DEG C of conditions, aluminium liquid is obtained;
Five, the precast body that step 3 obtains is placed in mould, then mould is warming up to 610 DEG C and carries out preheating, the method for recycling Pressure Infiltration, aluminium immersion step 4 obtained is seeped in precast body gap, keep pressure 1h, after mould cooling, the demoulding obtains Graphene aluminum matrix composite;
Pressure Infiltration environment described in step 5 is in atmospheric environment;
The pressure of the Pressure Infiltration described in step 5 is 85MPa;
In Graphene aluminum matrix composite, the volume fraction of the aluminum metal powder that step one obtains is 40%;
In Graphene aluminum matrix composite, the volume parts of the Graphene described in step 2 is 10%.
The preparation method of a kind of Graphene aluminum matrix composite of test eight, this experiment carries out according to the following steps:
One, 5083 Al alloy powders are placed in ball grinder, are filled with He after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 5:1, and Ball-milling Time is 150min, and rotating speed is 180rpm, obtains aluminum metal powder;
The granularity of 5083 described Al alloy powders is 150 orders;
Described abrading-ball is GCr 15abrading-ball;
Two, the aluminum metal powder that Graphene and step one obtain is placed in ball grinder, is filled with He after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 6:1, and Ball-milling Time is 3h, and rotating speed is 280rpm, obtains composite granule;
Described abrading-ball is GCr 15abrading-ball;
Three, the composite granule that step 2 obtains is colded pressing make precast body;
Described parameter of colding pressing is: pressure is 40MPa, dwell time 10min, and temperature is room temperature 25 DEG C.
Four, by 5083 aluminium alloy blocks melting 3h under temperature 850 DEG C of conditions, aluminium liquid is obtained;
Five, the precast body that step 3 obtains is placed in mould, then mould is warming up to 590 DEG C and carries out preheating, the method for recycling Pressure Infiltration, aluminium immersion step 4 obtained is seeped in precast body gap, keep pressure 0.5h, after mould cooling, the demoulding obtains Graphene aluminum matrix composite;
Pressure Infiltration environment described in step 5 is in atmospheric environment;
The pressure of the Pressure Infiltration described in step 5 is 95MPa;
In Graphene aluminum matrix composite, the volume parts of the aluminum metal powder that step one obtains is 45%;
In Graphene aluminum matrix composite, the volume parts of the Graphene described in step 2 is 20%.
The preparation method of a kind of Graphene aluminum matrix composite of test nine, this experiment carries out according to the following steps:
One, 2024 Al alloy powders are placed in ball grinder, are filled with Ar after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 5:1, and Ball-milling Time is 180min, and rotating speed is 200rpm, obtains aluminum metal powder;
The granularity of 2024 described Al alloy powders is 180 orders;
Described abrading-ball is GCr 15abrading-ball;
Two, the aluminum metal powder that Graphene and step one obtain is placed in ball grinder, is filled with Ar after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 8:1, and Ball-milling Time is 6h, and rotating speed is 400rpm, obtains composite granule;
Described abrading-ball is GCr 15abrading-ball;
Three, the composite granule that step 2 obtains is colded pressing make precast body;
Described parameter of colding pressing is: pressure is 20MPa, dwell time 10min, and temperature is room temperature 25 DEG C.
Four, by 2024 aluminium alloy blocks melting 4h under temperature 810 DEG C of conditions, aluminium liquid is obtained;
Five, the precast body that step 3 obtains is placed in mould, then mould is warming up to 630 DEG C and carries out preheating, the method for recycling Pressure Infiltration, aluminium immersion step 4 obtained is seeped in precast body gap, keep pressure 0.5h, after mould cooling, the demoulding obtains Graphene aluminum matrix composite;
Pressure Infiltration environment described in step 5 is in atmospheric environment;
The pressure of the Pressure Infiltration described in step 5 is 100MPa;
In Graphene aluminum matrix composite, the volume parts of the aluminum metal powder that step one obtains is 40%;
In Graphene aluminum matrix composite, the volume parts of the Graphene described in step 2 is 10%.
The preparation method of a kind of Graphene aluminum matrix composite of test ten, this experiment carries out according to the following steps:
One, 6063 Al alloy powders are placed in ball grinder, are filled with Ar after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 5:1, and Ball-milling Time is 180min, and rotating speed is 250rpm, obtains aluminum metal powder;
The granularity of 6063 described Al alloy powders is 200 orders;
Described abrading-ball is GCr 15abrading-ball;
Two, the aluminum metal powder that Graphene and step one obtain is placed in ball grinder, is filled with Ar after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 8:1, and Ball-milling Time is 4h, and rotating speed is 300rpm, obtains composite granule;
Described abrading-ball is GCr 15abrading-ball;
Three, the composite granule that step 2 obtains is colded pressing make precast body;
Described parameter of colding pressing is: pressure is 20MPa, dwell time 10min, and temperature is room temperature 25 DEG C.
Four, by 6063 aluminium alloy blocks melting 4h under temperature 800 DEG C of conditions, aluminium liquid is obtained;
Five, the precast body that step 3 obtains is placed in mould, then mould is warming up to 600 DEG C and carries out preheating, the method for recycling Pressure Infiltration, aluminium immersion step 4 obtained is seeped in precast body gap, keep pressure 0.5h, after mould cooling, the demoulding obtains Graphene aluminum matrix composite;
Pressure Infiltration environment described in step 5 is in atmospheric environment;
The pressure of the Pressure Infiltration described in step 5 is 90MPa;
In Graphene aluminum matrix composite, the volume parts of the aluminum metal powder that step one obtains is 35%;
In Graphene aluminum matrix composite, the volume parts of the Graphene described in step 2 is 10%.
Test 11, the preparation method of a kind of Graphene aluminum matrix composite of this experiment carry out according to the following steps:
One, 7075 Al alloy powders are placed in ball grinder, are filled with Ar after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 3:1, and Ball-milling Time is 180min, and rotating speed is 200rpm, obtains aluminum metal powder;
The granularity of 7075 described Al alloy powders is 250 orders;
Described abrading-ball is GCr 15abrading-ball;
Two, the aluminum metal powder that Graphene and step one obtain is placed in ball grinder, is filled with Ar after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 10:1, and Ball-milling Time is 6h, and rotating speed is 200rpm, obtains composite granule;
Described abrading-ball is GCr 15abrading-ball;
Three, the composite granule that step 2 obtains is colded pressing make precast body;
Described parameter of colding pressing is: pressure is 40MPa, dwell time 10min, and temperature is room temperature 25 DEG C.
Four, by 7075 aluminium alloy blocks melting 4h under temperature 800 DEG C of conditions, aluminium liquid is obtained;
Five, the precast body that step 3 obtains is placed in mould, then mould is warming up to 600 DEG C and carries out preheating, the method for recycling Pressure Infiltration, aluminium immersion step 4 obtained is seeped in precast body gap, keep pressure 0.5h, after mould cooling, the demoulding obtains Graphene aluminum matrix composite;
Pressure Infiltration environment described in step 5 is in atmospheric environment;
The pressure of the Pressure Infiltration described in step 5 is 90MPa;
In Graphene aluminum matrix composite, the volume parts of the aluminum metal powder that step one obtains is 40%;
In Graphene aluminum matrix composite, the volume parts of the Graphene described in step 2 is 5%.
Test 12, the preparation method of a kind of Graphene aluminum matrix composite of this experiment carry out according to the following steps:
One, 8089 Al alloy powders are placed in ball grinder, are filled with He and Ar mixed gas after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 5:1, and Ball-milling Time is 120min, and rotating speed is 250rpm, obtains aluminum metal powder;
The granularity of 8089 described Al alloy powders is 300 orders;
Described abrading-ball is GCr 15abrading-ball;
Two, the aluminum metal powder that Graphene and step one obtain is placed in ball grinder, is filled with He and Ar mixed gas after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 5:1, and Ball-milling Time is 6h, and rotating speed is 300rpm, obtains composite granule;
Described abrading-ball is GCr 15abrading-ball;
Three, the composite granule that step 2 obtains is colded pressing make precast body;
Described parameter of colding pressing is: pressure is 45MPa, dwell time 5min, and temperature is room temperature 25 DEG C.
Four, by 8089 aluminium alloy blocks melting 4h under temperature 830 DEG C of conditions, aluminium liquid is obtained;
Five, the precast body that step 3 obtains is placed in mould, then mould is warming up to 650 DEG C and carries out preheating, the method for recycling Pressure Infiltration, aluminium immersion step 4 obtained is seeped in precast body gap, keep pressure 0.5h, after mould cooling, the demoulding obtains Graphene aluminum matrix composite;
Pressure Infiltration environment described in step 5 is in vacuum environment;
The pressure of the Pressure Infiltration described in step 5 is 100MPa;
In Graphene aluminum matrix composite, the volume parts of the aluminum metal powder that step one obtains is 40%;
In Graphene aluminum matrix composite, the volume parts of the Graphene described in step 2 is 20%.
Test 13, the preparation method of a kind of Graphene aluminum matrix composite of this experiment carry out according to the following steps:
One, ZL102 Al alloy powder is placed in ball grinder, is filled with Ar after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 5:1, and Ball-milling Time is 180min, and rotating speed is 250rpm, obtains aluminum metal powder;
The granularity of described ZL102 Al alloy powder is 350 orders;
Described abrading-ball is GCr 15abrading-ball;
Two, the aluminum metal powder that Graphene and step one obtain is placed in ball grinder, is filled with Ar after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 3:1, and Ball-milling Time is 6h, and rotating speed is 400rpm, obtains composite granule;
Described abrading-ball is Al 2o 3abrading-ball;
Three, the composite granule that step 2 obtains is colded pressing make precast body;
Described parameter of colding pressing is: pressure is 25MPa, dwell time 10min, and temperature is room temperature 25 DEG C.
Four, by ZL102 aluminium alloy block melting 3h under temperature 850 DEG C of conditions, aluminium liquid is obtained;
Five, the precast body that step 3 obtains is placed in mould, then mould is warming up to 670 DEG C and carries out preheating, the method for recycling Pressure Infiltration, aluminium immersion step 4 obtained is seeped in precast body gap, keep pressure 0.5h, after mould cooling, the demoulding obtains Graphene aluminum matrix composite;
Pressure Infiltration environment described in step 5 is in vacuum environment;
The pressure of the Pressure Infiltration described in step 5 is 85MPa;
In Graphene aluminum matrix composite, the volume parts of the aluminum metal powder that step one obtains is 40%;
In Graphene aluminum matrix composite, the volume parts of the Graphene described in step 2 is 7%.
Test 14, the preparation method of a kind of Graphene aluminum matrix composite of this experiment carry out according to the following steps:
One, ZL110 Al alloy powder is placed in ball grinder, is filled with Ar after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 5:1, and Ball-milling Time is 180min, and rotating speed is 250rpm, obtains aluminum metal powder;
The granularity of described ZL110 Al alloy powder is 400 orders;
Described abrading-ball is GCr 15abrading-ball;
Two, the aluminum metal powder that Graphene and step one obtain is placed in ball grinder, is filled with Ar after vacuumizing, then carry out ball milling, the mass ratio of abrading-ball and material is 4:1, and Ball-milling Time is 4h, and rotating speed is 400rpm, obtains composite granule;
Described abrading-ball is Al 2o 3and GCr 15mixing abrading-ball;
Three, the composite granule that step 2 obtains is colded pressing make precast body;
Described parameter of colding pressing is: pressure is 30MPa, dwell time 40min, and temperature is room temperature 25 DEG C.
Four, by ZL110 aluminium alloy block melting 4h under temperature 880 DEG C of conditions, aluminium liquid is obtained;
Five, the precast body that step 3 obtains is placed in mould, then mould is warming up to 650 DEG C and carries out preheating, the method for recycling Pressure Infiltration, aluminium immersion step 4 obtained is seeped in precast body gap, keep pressure 1h, after mould cooling, the demoulding obtains Graphene aluminum matrix composite;
Pressure Infiltration environment described in step 5 is in vacuum environment;
The pressure of the Pressure Infiltration described in step 5 is 100MPa;
In Graphene aluminum matrix composite, the volume parts of the aluminum metal powder that step one obtains is 40%;
In Graphene aluminum matrix composite, the volume parts of the Graphene described in step 2 is 15%.
(1) adopt model to be that the fracture that the Graphene aluminum matrix composites that prepare of TecnaiG2F30 type scanning electronic microscope test four carry out detects, obtain fracture apperance figure as shown in Figure 1;
Fig. 1 shows the preparation method of test four, and overcome the shortcoming of Graphene and alloy matrix aluminum wettability difference, Graphene is combined closely with matrix, and have obvious Graphene to extract phenomenon, Graphene serves carrying effect in the loading process of matrix material.
(2) adopt dynamic elastic modulus tester to carry out the detection of Young's modulus stratum to the Graphene aluminum matrix composite that test three to five prepares, obtain the change curve of Young's modulus as shown in Figure 2 with volume fraction; Wherein a is theoretical value, and b is measured value; The Young's modulus coincidence theory calculated value of matrix material as can be seen from Figure 2.
(3) model is adopted to be that the Graphene aluminum matrix composite that INSTRON5569 universal electrical mechanics machine test three to five prepares carries out three-point bending strength detection, obtain volume fraction as shown in Figure 3 and three-point bending strength change curve, Graphene improves increasing to the intensity of matrix material as can be seen from Figure 3, improves nearly 250%.

Claims (8)

1. a preparation method for Graphene aluminum matrix composite, is characterized in that a kind of preparation method of Graphene aluminum matrix composite carries out according to following steps:
One, fine aluminium powder or Al alloy powder are placed in ball grinder, after vacuumizing, are filled with protective gas, then carry out ball milling, the mass ratio of abrading-ball and material is (3 ~ 5): 1, Ball-milling Time is 2h ~ 3h, and rotating speed is 120rpm ~ 250rpm, obtains aluminum metal powder;
The granularity of described fine aluminium powder is 25 order ~ 500 orders;
The granularity of described Al alloy powder is 25 order ~ 500 orders;
Two, the aluminum metal powder that Graphene and step one obtain is placed in ball grinder, after vacuumizing, is filled with protective gas, then carry out ball milling, the mass ratio of abrading-ball and material is (3 ~ 10): 1, Ball-milling Time is 2h ~ 6h, and rotating speed is 200rpm ~ 400rpm, obtains composite granule;
Three, the composite granule that step 2 obtains is colded pressing make precast body; Described parameter of colding pressing is: pressure is 20MPa ~ 50MPa, dwell time 5min ~ 10min, and temperature is room temperature;
Four, melting 3h ~ 4h under temperature 700 ~ 900 DEG C of conditions by fine aluminium block or aluminium alloy block, obtains aluminium liquid;
Five, the precast body that step 3 obtains is placed in mould, then mould is warming up to 500 ~ 700 DEG C and carries out preheating, the method of recycling Pressure Infiltration, aluminium immersion step 4 obtained is seeped in precast body gap, keep pressure 0.5h ~ 1h, after mould cooling, the demoulding obtains Graphene aluminum matrix composite; The pressure of described Pressure Infiltration is 80MPa ~ 100MPa;
In Graphene aluminum matrix composite, the volume fraction of the aluminum metal powder that step one obtains is 35% ~ 45%;
In Graphene aluminum matrix composite, the volume fraction of the Graphene described in step 2 is 1% ~ 20%.
2. the preparation method of a kind of Graphene aluminum matrix composite according to claim 1, is characterized in that the Al alloy powder described in step one is a kind of or wherein several mixture in Al-Si series alloy powder, Al-Cu series alloy powder, Al-Mg series alloy powder, Al-Si-Cu series alloy powder, Al-Si-Mg series alloy powder, Al-Cu-Mg alloy powder, Al-Si-Cu-Mg series alloy powder and Al-Zn-Mg series alloy powder.
3. the preparation method of a kind of Graphene aluminum matrix composite according to claim 1 and 2, it is characterized in that the abrading-ball described in step one is a kind of or wherein several mixture in steel ball or Ceramic Balls, the protective gas described in step one is N 2, a kind of or wherein several mixture in Ar, He.
4. the preparation method of a kind of Graphene aluminum matrix composite according to claim 3, is characterized in that the abrading-ball described in step 2 is steel ball or Ceramic Balls, and the protective gas described in step 2 is N 2, a kind of or wherein several mixture in Ar, He.
5. the preparation method of a kind of Graphene aluminum matrix composite according to claim 3, it is characterized in that the ball milling described in step one adopts the positive counter-cyclical alternately, the ball milling method of intermediate suspension, and single just transfers 20min ~ 40min to, single reversing time is 20min ~ 40min, and the intermediate suspension time is 20min ~ 40min.
6. the preparation method of a kind of Graphene aluminum matrix composite according to claim 3, it is characterized in that the ball milling described in step 2 adopts the positive counter-cyclical alternately, the ball milling method of intermediate suspension, and single just transfers 20min ~ 40min to, single reversing time is 20min ~ 40min, and the intermediate suspension time is 20min ~ 40min.
7. the preparation method of a kind of Graphene aluminum matrix composite according to claim 3, is characterized in that the aluminium alloy block described in step 4 is a kind of or wherein several mixture in Al-Si system alloy body, Al-Cu system alloy body, Al-Mg system alloy body, Al-Si-Cu system alloy body, Al-Si-Mg system alloy body, Al-Cu-Mg alloy body and Al-Si-Cu-Mg system alloy body.
8. the preparation method of a kind of Graphene aluminum matrix composite according to claim 3, is characterized in that the Pressure Infiltration environment described in step 5 is in vacuum environment or in atmospheric environment.
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