CN108359825B - A kind of preparation method of ceramics-graphene enhancing Cu-base composites - Google Patents

A kind of preparation method of ceramics-graphene enhancing Cu-base composites Download PDF

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CN108359825B
CN108359825B CN201810140966.3A CN201810140966A CN108359825B CN 108359825 B CN108359825 B CN 108359825B CN 201810140966 A CN201810140966 A CN 201810140966A CN 108359825 B CN108359825 B CN 108359825B
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powder
graphene
ball
ceramics
graphite
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CN108359825A (en
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李玉平
刘颖
董楠
王剑
张彩丽
韩培德
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Taiyuan University of Technology
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Taiyuan University of Technology
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/04Making alloys by powder metallurgy
    • C22C1/05Mixtures of metal powder with non-metallic powder
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C32/00Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides whether added as such or formed in situ
    • C22C32/0084Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides whether added as such or formed in situ carbon or graphite as the main non-metallic constituent
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C9/00Alloys based on copper

Abstract

The invention belongs to field of compound material, in particular to a kind of ceramics-graphene enhancing Cu-base composites preparation method.The method is with copper powder, graphite, Al2O3Powder, Fe powder, crystalline flake graphite are raw material, carry out ball milling to raw material using ball mill.Mixed-powder is put into graphite jig after ball milling, is sintered using vacuum hotpressing stove, constant temperature is kept in maximum sintering temperature and applies pressure.Release after sintering, furnace cooling cause room temperature, and prepared material is that ceramics of the present invention-graphene enhances Cu-base composites.The method of the present invention is simple, and the ceramics of preparation-graphene enhancing Cu-base composites have specific strength and specific stiffness height, excellent abrasion resistance properties, good thermal conductivity, be widely used in making be hit, the wear-resistant parts in mineral environment easy to wear.

Description

A kind of preparation method of ceramics-graphene enhancing Cu-base composites
Technical field
The invention belongs to field of compound material, in particular to the preparation of a kind of ceramics-graphene enhancing Cu-base composites Method.
Background technique
The hot copper alloy of high-strength conductive is a kind of new function material with excellent comprehensive performance, both has excellent lead Electric heating, but have high intensity and superior high-temperature behavior, it is considered to be with development potential with the novel function of application prospect It can material.But since copper alloy carrying particle is less, wearability is poor, dispersoid particle can grow up under the high temperature conditions, and and copper Matrix forms solid solution, and mechanical strength is caused to reduce, and the contradiction of mechanical performance and conductive hot property does not obtain very well always yet It solves.Cu-base composites are that a certain amount of high-melting-point, high-modulus, resistance to is added in fine copper by advanced material preparation process Mill and the second phase reinforced phase resistant to high temperature, had both played the synergistic effect of matrix and reinforcer, increased single component materials institute not Attainable comprehensive performance.Since fine copper matrix strength is lower, so that the mechanical strength promotion of composite material is limited, it is difficult to sufficiently The invigoration effect of enhancing particle is played, especially under the conditions of high temperature and top load, the bearing capacity of material is substantially reduced, and is caused The failure of material.The volume of the reinforced phase of disperse is more than 20% in Cu-base composites, can embody the excellent properties of reinforced phase. Method for composite material mainly has stirring casting method, squeeze casting method, powder metallurgic method etc..Wherein powder metallurgy process can make The more uniform advantage for being scattered in Copper substrate of graphene added by obtaining, to obtain more excellent performance.
Stirring casting method:
Stirring casting method is stirred strongly to metal bath, puts into Second Phase Particle, it is made to be uniformly distributed in metal Melt, subsequent cast molding.The method simple process, is convenient for industrialized production.But Second Phase Particle volume fraction is restricted, And be difficult to homogenize Second Phase Particle, ingot casting can only be made, need secondary operation.
Powder metallurgic method:
Powder metallurgic method is to mix solid metallic powder and enhancing particle mechanical uniform, in certain temperature and pressure item Sinter molding is suppressed under part.PM technique has the advantages that some uniquenesses, and such as manufacture temperature is lower, alleviates matrix and increasing Strong intergranular interfacial reaction, reduces the formation of hard compounds on interface, the volume fraction for enhancing particle is higher;Enhancing Distribution of particles is more uniform, is less prone to segregation and segregation.But powder metallurgy also has shortcoming, as the size of product, shape by To limitation;A possibility that process is more, long preparation period, at high cost, reduces cost are small.Especially expensive preparation cost system The about application and development of powder metallurgy.
Squeeze casting method:
It is very mature method that the method, which prepares metal-base composites,.It is to be put into mold using reinforcement as prefabricated section, Matrix alloy solution is poured into again, is then pressurizeed, and Matrix Solution is made to penetrate into prefabricated section ingot.Extrusion casint has the advantage that production Period is short, is easy to produce in enormous quantities, can prepare the same or similar product of shape of shape and final product.Liquid metal The time of infiltration is short, and cooling velocity is fast, can reduce cause or even eliminate granular boundary reaction.The volume fraction of reinforced phase is adjustable model It encloses big.But extrusion casint is not easy to prepare complex-shaped product, when infiltrate pressure it is very big when, to the complete of mold and institute's product Property has a great impact.
It at present there is also some problems in terms of the preparation of particles reiforced metal-base composition: (1) particulates reinforcements Influence of the volume fraction to the mechanical property of composite material is very big.But the volume fraction of prior art control reinforced phase is more tired It is difficult.(2) reinforced phase is discontinuous in most of composite material.The study found that when reinforced phase in composite material and matrix are in mutual When wearing network distribution structure, there is more excellent performance.(3) binding ability is usually weaker between ceramic phase and matrix.(4) load When larger, parent metal low strength.
Summary of the invention
It is an object of the invention to improve the mechanical property of matrix phase copper in existing metal-base composites, a kind of tool is provided There is high-strength, high rigidity, ceramics-graphene of simple production process, excellent product performance enhances Cu-base composites.
For overcome the deficiencies in the prior art, the technical scheme is that solving in this way: a kind of ceramics-graphene increases The preparation method of strong Cu-base composites, comprising the following steps:
S100, crystalline flake graphite are put into blender and are stirred, and remove as graphene;
S200, copper powder, graphene are put into addition ball-milling medium progress mixing and ball milling in ball grinder;
S300, by graphite, Al2O3Powder, Fe powder are put into the good copper powder of ball milling, continue ball milling in graphene mixture;
S400, ball milling is got well after mixed powder be put into graphite jig, under the action of cold press, be pressed into required ruler Very little green compact, green compact are sintered in vacuum hotpressing stove in company with graphite jig;
Release after S500, sintering, cools to room temperature with the furnace, and prepared material is ceramics-graphene enhancing copper Based composites.
As the further improvement of technical solution of the present invention, mixing speed is 300 turns/min in the step S100, described Copper powder in step S200, graphene percent by volume be respectively 99.9vol% and 0.1vol%;Copper in the step S300 Powder and graphene mixture, graphite, Al2O3Powder, Fe powder mass percent be respectively 55~65wt%, 10~20wt%, 5~ 15wt% and 10~20wt%.
As the further improvement of technical solution of the present invention, the copper powder, Al2O3Powder, Fe powder purity are above 99.9%, Granularity is less than 100 microns;Crystalline flake graphite, graphite purity are above 99.9%, and 75 microns of granularity.
As the further improvement of technical solution of the present invention, Ball-milling Time is 2~3 hours in the step S200, step Ball-milling Time is 10~14 hours in S300, and ball-milling medium is zirconium carbide ball, ball grinder revolving speed 200r/min, in mechanical milling process Dehydrated alcohol is added in ball grinder and is sealed.
As the further improvement of technical solution of the present invention, sintering temperature when vacuum heating-press sintering in S400 in the step Be 750~850 DEG C, heating rate is 15 DEG C/min, in furnace vacuum degree maintain 9~13Pa hereinafter, sintering keep constant temperature 5~ 10min。
As the further improvement of technical solution of the present invention, S400 is in cold press to the pressure of green compact application in the step Power is 20~30MPa.
It is 30~50MPa to the pressure that green compact applies in sintering process as the further improvement of technical solution of the present invention.
Compared with the existing technology, preparation process is simple for the ceramics prepared in the present invention-graphene enhancing Cu-base composites Single, tissue is comparatively dense, has excellent obdurability and abrasion resistance properties.And uniform Fe is distributed in Copper substrate of the present invention Phase, Al2O3It is uniformly distributed in Copper substrate with graphite, there is more excellent performance.Even if when load is larger, matrix gold It is still very high to belong to intensity.The method of the present invention is simple, and ceramics-graphene enhancing Cu-base composites of preparation have specific strength and ratio Rigidity height, excellent abrasion resistance properties, good thermal conductivity, be widely used in production be hit, industrial and mineral ring easy to wear Wear-resistant parts in border.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.
Fig. 1 is the optics metallographic microstructure that ceramics of the present invention-graphene enhances Cu-base composites.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work Other embodiment belongs to the range that the present invention is protected.
Technical solution of the present invention is described in detail with reference to the accompanying drawing.
A kind of preparation method of ceramics-graphene enhancing Cu-base composites, comprising the following steps:
S100, crystalline flake graphite are put into blender and are stirred, and remove as graphene;
S200, copper powder, graphene are put into addition ball-milling medium progress mixing and ball milling in ball grinder;
S300, by graphite, Al2O3Powder, Fe powder are put into the good copper powder of ball milling, continue ball milling in graphene mixture;
S400, ball milling is got well after mixed powder be put into graphite jig, under the action of cold press, be pressed into required ruler Very little green compact, green compact are sintered in vacuum hotpressing stove in company with graphite jig;
Release after S500, sintering, cools to room temperature with the furnace, and prepared material is ceramics-graphene enhancing copper Based composites.
Preferably, mixing speed is 300 turns/min in the step S100, copper powder in the step S200, graphene Percent by volume is respectively 99.9vol% and 0.1vol%;Copper powder and graphene mixture in the step S300, graphite, Al2O3Powder, Fe powder mass percent be respectively 55~65wt%, 10~20wt%, 5~15wt% and 10~20wt%.? Preferred copper powder and graphene mixture in the present invention, graphite, Al2O3 powder, Fe powder mass percent be respectively 65wt%, 17wt%, 8wt% and 10wt%.
Further, the copper powder, Al2O3Powder, Fe powder purity are above 99.9%, and granularity is less than 100 microns;Scale stone Ink, graphite purity are above 99.9%, and 75 microns of granularity.
In the present invention, Ball-milling Time is 2~3 hours in the step S200, in step S300 Ball-milling Time be 10~ 14 hours, ball-milling medium was zirconium carbide ball, and ball grinder revolving speed 200r/min adds dehydrated alcohol in mechanical milling process in ball grinder And it seals.
Specifically, sintering temperature is 750~850 DEG C when vacuum heating-press sintering in S400 in the step, heating rate is 15 DEG C/min, vacuum degree maintains 9~13Pa hereinafter, sintering keeps 5~10min of constant temperature in furnace.
Preferably, S400 is 20~30MPa to the pressure that green compact applies in cold press in the step.
It further, is 30~50MPa to the pressure that green compact applies in sintering process.
The ceramics prepared in the present invention-graphene enhancing Cu-base composites preparation process is simple, organizes comparatively dense, tool There are excellent obdurability and abrasion resistance properties.Preparing resulting ceramics-graphene by above step enhances Cu-base composites Have the characteristics that Copper substrate intensity is high, overall mechanical properties are high, wearability is high.
Embodiment 1
A kind of preparation method of ceramics-graphene enhancing Cu-base composites, comprising the following steps:
S100, crystalline flake graphite are put into blender to be stirred with 300 turns/min, is removed as graphene.
S200, it is packed into ball mill after weighing copper powder, graphene according to volume ratio 99.9:0.1, is filled with argon gas in ball mill Protection, be switched on ball milling, and Ball-milling Time is 2 hours.
S300, graphite, Al are added into copper powder obtained in S200, graphene mixed powder (M1)2O3Powder, Fe powder, obtain Mixture (M2), wherein in gained mixture the content of mixed powder M1 be 65%, content of graphite 15%, Al2O3Powder content It is 13% for 7%, Fe powder content;M2 is poured into ball mill, abrading-ball, dehydrated alcohol are added, argon gas is carried out and protects lower secondary ball Mill, Ball-milling Time are 10 hours, revolving speed 200r/min.
After the completion of S400, M2 ball milling, by uniformly mixed copper powder, graphene, graphite, Al2O3, Fe powder mixture M2 carry out Dry, crushing, and Fast Filling is into graphite jig;The graphite jig that will be filled with uniform mixed-powder M2, is put into cold press In, under the pressure of 20MPa, it is pressed into the green compact of required size;Resulting green compact is put into togerther vacuum in company with graphite jig It is sintered in hot pressing furnace;Sintering carries out under vacuum conditions, and heating applies 30MPa pressure to green compact in insulating process, in furnace Vacuum degree maintains 13Pa hereinafter, sintering temperature is 750 DEG C, and soaking time is 10 minutes.
It is cooled down together after S500, sintering with sintering furnace, obtains ceramics-graphene enhancing Cu-base composites.
Embodiment 2
A kind of preparation method of ceramics-graphene enhancing Cu-base composites, comprising the following steps:
S100, crystalline flake graphite are put into blender to be stirred with 300 turns/min, is removed as graphene.
S200, it is packed into ball mill after weighing copper powder, graphene according to volume ratio 99.9:0.1, is filled with argon gas in ball mill Protection, be switched on ball milling, and Ball-milling Time is 3 hours.
S300, graphite, Al are added into copper powder obtained in S200, graphene mixed powder (M1)2O3Powder, Fe powder, obtain Mixture (M2), wherein in gained mixture the content of mixed powder M1 be 60%, content of graphite 20%, Al2O3Powder content It is 10% for 10%, Fe powder content;M2 is poured into ball mill, abrading-ball, dehydrated alcohol are added, argon gas is carried out and protects lower secondary ball Mill, Ball-milling Time are 14 hours, revolving speed 200r/min.
After the completion of S400, M2 ball milling, by uniformly mixed copper powder, graphene, graphite, Al2O3, Fe powder mixture M2 carry out Dry, crushing, and Fast Filling is into graphite jig;The graphite jig that will be filled with uniform mixed-powder M2, is put into cold press In, under the pressure of 30MPa, it is pressed into the green compact of required size;Resulting green compact is put into togerther vacuum in company with graphite jig It is sintered in hot pressing furnace;Sintering carries out under vacuum conditions, and heating applies 50MPa pressure to green compact in insulating process, in furnace Vacuum degree maintains 9Pa hereinafter, sintering temperature is 850 DEG C, and soaking time is 5 minutes.
It is cooled down together after S500, sintering with sintering furnace, obtains ceramics-graphene enhancing Cu-base composites.
Embodiment 3
A kind of preparation method of ceramics-graphene enhancing Cu-base composites, comprising the following steps:
S100, crystalline flake graphite are put into blender to be stirred with 300 turns/min, is removed as graphene.
S200, it is packed into ball mill after weighing copper powder, graphene according to volume ratio 99.9:0.1, is filled with argon gas in ball mill Protection, be switched on ball milling, and Ball-milling Time is 2.5 hours.
S300, graphite, Al are added into copper powder obtained in S200, graphene mixed powder (M1)2O3Powder, Fe powder, obtain Mixture (M2), wherein in gained mixture the content of mixed powder M1 be 55%, content of graphite 20%, Al2O3Powder content It is 20% for 5%, Fe powder content;M2 is poured into ball mill, abrading-ball, dehydrated alcohol are added, argon gas is carried out and protects lower secondary ball Mill, Ball-milling Time are 12 hours, revolving speed 200r/min.
After the completion of S400, M2 ball milling, by uniformly mixed copper powder, graphene, graphite, Al2O3, Fe powder mixture M2 carry out Dry, crushing, and Fast Filling is into graphite jig;The graphite jig that will be filled with uniform mixed-powder M2, is put into cold press In, under the pressure of 25MPa, it is pressed into the green compact of required size;Resulting green compact is put into togerther vacuum in company with graphite jig It is sintered in hot pressing furnace;Sintering carries out under vacuum conditions, and heating applies 45MPa pressure to green compact in insulating process, in furnace Vacuum degree maintains 10Pa hereinafter, sintering temperature is 800 DEG C, and soaking time is 8 minutes.
It is cooled down together after S500, sintering with sintering furnace, obtains ceramics-graphene enhancing Cu-base composites.
Embodiment 4
A kind of preparation method of ceramics-graphene enhancing Cu-base composites, comprising the following steps:
S100, crystalline flake graphite are put into blender to be stirred with 300 turns/min, is removed as graphene.
S200, it is packed into ball mill after weighing copper powder, graphene according to volume ratio 99.9:0.1, is filled with argon gas in ball mill Protection, be switched on ball milling, and Ball-milling Time is 2 hours.
S300, graphite, Al are added into copper powder obtained in S200, graphene mixed powder (M1)2O3Powder, Fe powder, obtain Mixture (M2), wherein in gained mixture the content of mixed powder M1 be 55%, content of graphite 12%, Al2O3Powder content It is 20% for 13%, Fe powder content;M2 is poured into ball mill, abrading-ball, dehydrated alcohol are added, argon gas is carried out and protects lower secondary ball Mill, Ball-milling Time are 13 hours, revolving speed 200r/min.
After the completion of S400, M2 ball milling, by uniformly mixed copper powder, graphene, graphite, Al2O3, Fe powder mixture M2 carry out Dry, crushing, and Fast Filling is into graphite jig;The graphite jig that will be filled with uniform mixed-powder M2, is put into cold press In, under the pressure of 22MPa, it is pressed into the green compact of required size;Resulting green compact is put into togerther vacuum in company with graphite jig It is sintered in hot pressing furnace;Sintering carries out under vacuum conditions, and heating applies 40MPa pressure to green compact in insulating process, in furnace Vacuum degree maintains 12Pa hereinafter, sintering temperature is 780 DEG C, and soaking time is 9 minutes.
It is cooled down together after S500, sintering with sintering furnace, obtains ceramics-graphene enhancing Cu-base composites.
Embodiment 5
A kind of preparation method of ceramics-graphene enhancing Cu-base composites, comprising the following steps:
S100, crystalline flake graphite are put into blender to be stirred with 300 turns/min, is removed as graphene.
S200, it is packed into ball mill after weighing copper powder, graphene according to volume ratio 99.9:0.1, is filled with argon gas in ball mill Protection, be switched on ball milling, and Ball-milling Time is 3 hours, revolving speed 200r/min.
S300, graphite, Al are added into copper powder obtained in S200, graphene mixed powder (M1)2O3Powder, Fe powder, obtain Mixture (M2), wherein in gained mixture the content of mixed powder M1 be 65%, content of graphite 15%, Al2O3Powder content It is 13% for 7%, Fe powder content;M2 is poured into ball mill, abrading-ball, dehydrated alcohol are added, argon gas is carried out and protects lower secondary ball Mill, Ball-milling Time are 11 hours.
After the completion of S400, M2 ball milling, by uniformly mixed copper powder, graphene, graphite, Al2O3, Fe powder mixture M2 carry out Dry, crushing, and Fast Filling is into graphite jig;The graphite jig that will be filled with uniform mixed-powder M2, is put into cold press In, under the pressure of 28MPa, it is pressed into the green compact of required size;Resulting green compact is put into togerther vacuum in company with graphite jig It is sintered in hot pressing furnace;Sintering carries out under vacuum conditions, and heating applies 35MPa pressure to green compact in insulating process, in furnace Vacuum degree maintains 11Pa hereinafter, sintering temperature is 830 DEG C, and soaking time is 7 minutes.
It is cooled down together after S500, sintering with sintering furnace, obtains ceramics-graphene enhancing Cu-base composites.
Comparative example 1
A kind of preparation method of ceramic strengthening copper base composite, comprising the following steps:
The first step is packed into ball mill after weighing copper powder, argon gas protection is filled in ball mill, and be switched on ball milling, Ball-milling Time It is 2 hours.
Graphite, Al are added into the resulting copper powder of the first step for second step2O3Powder, Fe powder obtain mixture (M2), wherein In gained mixture the content of copper powder be 65%, content of graphite 15%, Al2O3Powder content is 7%, Fe powder content is 13%;It will M2 is poured into ball mill, adds abrading-ball, dehydrated alcohol, is carried out argon gas and is protected lower secondary ball milling, Ball-milling Time is 10 hours, revolving speed 200r/min。
After the completion of third step, M2 ball milling, by uniformly mixed copper powder, graphite, Al2O3, Fe powder mixture M2 be dried, It crushes, and Fast Filling is into graphite jig;The graphite jig that will be filled with uniform mixed-powder M2, is put into cold press, Under the pressure of 20MPa, it is pressed into the green compact of required size;Resulting green compact is put into togerther vacuum hotpressing stove in company with graphite jig In be sintered;Sintering carries out under vacuum conditions, applies 30MPa pressure, vacuum degree in furnace to green compact in heating, insulating process 13Pa is maintained hereinafter, sintering temperature is 750 DEG C, soaking time is 10 minutes.
It is cooled down together after S500, sintering with sintering furnace, obtains ceramic strengthening copper base composite.
Above embodiments are intended to provide a kind of preparation method of ceramics-graphene enhancing Cu-base composites, wherein appointing What copper, the variation of graphene composite powder ratio, mixed powder M1 changes of contents, content of graphite variation, Al2O3The variation of powder powder content, Fe Powder content changes the column for belonging to this preparation method.
The present invention is further measured the performance of the composite material in each embodiment.Wherein prepared ceramics- Graphene enhances the micro-vickers hardness of Cu-base composites, coefficient of friction under conditions of load 30N, wearing- in period 10min It is listed in the table below with abrasion loss.
Fig. 1 show the optical microstructure of composite material after embodiment 2 is sintered, it can be seen that is distributed in Copper substrate Even Fe phase, Al2O3Powder and graphite are uniformly distributed in Copper substrate.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.

Claims (6)

1. a kind of ceramics-graphene enhancing Cu-base composites preparation method, which comprises the following steps:
S100, crystalline flake graphite are put into blender and are stirred, and remove as graphene;Mixing speed is in the step S100 300 turns/min;
S200, copper powder, graphene are put into addition ball-milling medium progress mixing and ball milling in ball grinder, copper in the step S200 Powder, graphene percent by volume be respectively 99.9 vol % and 0.1vol%;
S300, by graphite, Al2O3Powder, Fe powder are put into the good copper powder of ball milling, continue ball milling in graphene mixture;The step Copper powder and graphene mixture, graphite, Al in rapid S3002O3Powder, Fe powder mass percent be respectively 55 ~ 65wt %, 10 ~ 20 Wt %, 5 ~ 15 wt % and 10 ~ 20 wt %;
S400, ball milling is got well after mixed powder be put into graphite jig, under the action of cold press, be pressed into required size Green compact, green compact are sintered in vacuum hotpressing stove in company with graphite jig;
Release after S500, sintering, cools to room temperature with the furnace, and prepared material is that ceramics-graphene enhancing is copper-based multiple Condensation material.
2. a kind of ceramics according to claim 1-graphene enhancing Cu-base composites preparation method, feature exist In: the copper powder, Al2O3Powder, Fe powder purity are above 99.9%, and granularity is less than 100 microns;Crystalline flake graphite, graphite purity are high In 99.9%, 75 microns of granularity.
3. a kind of ceramics according to claim 1-graphene enhancing Cu-base composites preparation method, feature exist In: Ball-milling Time is 2 ~ 3 hours in the step S200, and Ball-milling Time is 10 ~ 14 hours in step S300, and ball-milling medium is carbon Change zirconium ball, ball grinder revolving speed 200r/min adds dehydrated alcohol in mechanical milling process and sealed in ball grinder.
4. a kind of ceramics according to claim 1-graphene enhancing Cu-base composites preparation method, feature exist In: sintering temperature is 750 ~ 850 DEG C when vacuum heating-press sintering in the step S400, and heating rate is 15 DEG C/min, true in furnace Reciprocal of duty cycle maintains 9 ~ 13Pa, and sintering keeps 5 ~ 10min of constant temperature.
5. a kind of ceramics according to claim 1-graphene enhancing Cu-base composites preparation method, feature exist In: the step S400 is 20 ~ 30MPa to the pressure that green compact applies in cold press.
6. a kind of ceramics according to claim 1-graphene enhancing Cu-base composites preparation method, feature exist In: it is 30 ~ 50MPa to the pressure that green compact applies in sintering process.
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