CN105821227B - A kind of method for preparing graphene enhancing Cu-base composites - Google Patents
A kind of method for preparing graphene enhancing Cu-base composites Download PDFInfo
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- CN105821227B CN105821227B CN201610377978.9A CN201610377978A CN105821227B CN 105821227 B CN105821227 B CN 105821227B CN 201610377978 A CN201610377978 A CN 201610377978A CN 105821227 B CN105821227 B CN 105821227B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
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- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C9/00—Alloys based on copper
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- B22—CASTING; POWDER METALLURGY
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- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
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Abstract
The present invention relates to a kind of method for preparing graphene enhancing Cu-base composites.The invention aims to solve the problems, such as that graphene dispersion present in the existing method for preparing graphene enhancing Cu-base composites is poor, cost is high and complex process.The present invention, by the graphene oxide of preparation and copper powder ultrasonic mixing in ethanol solution, makes graphene oxide uniformly dispersed with copper powder using graphene oxide as reinforcement precursor using inexpensive ball grinding technique.Graphene enhancing Cu-base composites are finally prepared using vacuum heating-press sintering.Composite obtained by the present invention has the advantages of graphene dispersion is good, preparation method is simple efficient and is easily achieved large-scale production.
Description
Technical field
The present invention relates to a kind of method for preparing graphene enhancing Cu-base composites.
Background technology
Copper and its alloy material have the advantages that good electrical and thermal conductivity performance and are easy to shaping, are widely used to aviation
The fields such as space flight, traffic, mechanical industry, derived energy chemical power electronics.With the development of modern science and technology, traditional copper and copper
Alloy strength low and high temperature poor performance can not meet the performance requirement of practical application, by being added in Copper substrate with high-strength
The second phase particles of degree, it is possessed more excellent combination property, can effectively expand the application field of copper and copper alloy.
Second phase of addition mainly has oxide, nitride and new carbon.
Graphene be one kind by carbon atom with sp2The hexangle type of hybridized orbit composition is in honeycomb lattice, an only carbon original
The two-dimensional material of sub- thickness.Graphene has big specific surface area, high electrical and thermal conductivity performance and excellent mechanical performance etc..
Due to these unique performances, graphene can turn into preferable reinforcement in composite.Existing experiment is it has already been indicated that gold
Mix a small amount of graphene can in category material and significantly improve all kinds of indexs such as yield strength and the fracture strength of material,
The research of graphene reinforced metal-matrix composite has become the new focus of field of compound material.But because graphene has
Very big specific surface area, cause very high surface energy so that there is graphene sheet layer very strong reunion to be inclined to, it is difficult to uniformly
It is dispersed in Copper substrate.And the higher preparation cost of graphene limits its further applying in the industrial production.
Graphene oxide can be carried out oxidation stripping by using strong oxidizer to graphite and is made, and preparation technology is simple, into
This is cheap.Surface of graphene oxide prepared by the method contains a large amount of functional groups, has good wetability with copper powder, easily in water
Property solution in form stable dispersion.Therefore using graphene oxide as reinforcement precursor, itself and copper powder are then utilized into ball
Mill method mixes, it is possible to achieve it is dispersed in Copper substrate, then will using high temperature during vacuum hot pressing sintering technique
Graphene oxide is reduced to graphene, obtains graphene enhancing Cu-base composites.
The content of the invention
The invention aims to solve the existing graphene for preparing to strengthen graphene dispersion present in Cu-base composites
Property poor, cost is high and the technical problem of complex process, and provide a kind of preparation method of graphene enhancing Cu-base composites.
A kind of method for preparing graphene enhancing Cu-base composites, is specifically carried out according to the following steps：
First, graphene oxide is prepared：Under conditions of ice-water bath 1g is added into the conical flask of the concentrated sulfuric acid equipped with 46mL
Graphite powder and 1g sodium nitrate, mix 20min under conditions of ice-water bath, and 6g permanganic acid is added under conditions of ice-water bath
Potassium, 40min is stirred, obtains the mixed liquor of green purple, protected under conditions of being 30 DEG C~40 DEG C in temperature by the mixed liquor of green purple
Warm 1h, 40mL distilled water is added under conditions of being then 30 DEG C~40 DEG C in temperature, in the condition that temperature is 85 DEG C~95 DEG C
Lower insulation 30min, obtain brown mixture, adds 100mL distilled water and 6mL into brown mixture at ambient temperature
Hydrogen peroxide, the mixed liquor of glassy yellow is obtained, then washed repeatedly with the hydrochloric acid solution and distilled water that mass concentration is 3% bright orange
The mixed liquor of color is 6~7 to pH, filtering, is freeze-dried 12h, obtains stannic oxide/graphene nano piece；
2nd, graphene oxide-copper composite powder is prepared：100g copper powder is added in 40mL absolute ethyl alcohol, in room
The lower ultrasonic disperse 30min of temperature, obtains copper powder suspension；Weigh graphene oxide 0.5g~2.0g that step 1 obtains and be placed on copper powder
Ultrasonic disperse 1h is continued with 10kHz frequency in suspension, obtains the water-borne dispersions of graphene oxide and copper powder；Stone will be aoxidized
The water-borne dispersions of black alkene and copper powder are added in 500ml polytetrafluoroethylene (PTFE) ball grinder, and ball is distinguished under the conditions of 400r/min
Grind 1~7h.The mechanical milling process uses stainless steel abrading-ball, and ball material mass ratio is 10:1, process control agent is 1 wt% tristearin
Acid, then ball milling slurries filtration, 80 DEG C of vacuum drying 24h are removed ethanol, obtain graphene oxide-copper composite powder；
3rd, the preparation of graphene enhancing Cu-base composites：Graphene oxide-copper composite powder prepared by step 2 is added
Enter to material to be 10 in vacuum in the mould of graphite-2Pa, pressure be 25MPa and temperature be 850 DEG C under conditions of sinter
1h, room temperature is naturally cooled to, obtain graphene enhancing Cu-base composites, the die surface of described graphite, which scribbles boron nitride, to be prevented
Infiltration layer.
The time of effective control ball milling of the invention, the integrality of graphene-structured is both ensure that to a certain extent, is made again
The scattered highly uniform of graphene is obtained, significantly improves the tensile property of material, the tensile strength compared to pure copper material carries
High by 24%, elongation percentage improves 20%.
Brief description of the drawings
Fig. 1 is the SEM figures of original stannic oxide/graphene nano piece in one step 1 of experiment.
Fig. 2 schemes for composite powder SEM after ball milling in one step 1 of experiment.
Fig. 3 is the stress-strain diagram that fine copper and graphene strengthen Cu-base composites in one step 1 of experiment.
Fig. 4 is the fracture SEM figure of the Cu-base composites that 0.5wt% graphenes strengthen in one step 1 of experiment.
Embodiment
The present invention will be further described with reference to embodiments, it should be pointed out that embodiment described below is intended to just
In the understanding of the present invention, and any restriction effect is not played to it.
Embodiment one：Present embodiment strengthens the method for Cu-base composites for a kind of graphene for preparing, specifically
Carry out according to the following steps：
First, graphene oxide is prepared：Under conditions of ice-water bath 1g is added into the conical flask of the concentrated sulfuric acid equipped with 46mL
Graphite powder and 1g sodium nitrate, mix 20min under conditions of ice-water bath, and 6g permanganic acid is added under conditions of ice-water bath
Potassium, 40min is stirred, obtains the mixed liquor of green purple, protected under conditions of being 30 DEG C~40 DEG C in temperature by the mixed liquor of green purple
Warm 1h, 40mL distilled water is added under conditions of being then 30 DEG C~40 DEG C in temperature, in the condition that temperature is 85 DEG C~95 DEG C
Lower insulation 30min, obtain brown mixture, adds 100mL distilled water and 6mL into brown mixture at ambient temperature
Hydrogen peroxide, the mixed liquor of glassy yellow is obtained, then washed repeatedly with the hydrochloric acid solution and distilled water that mass concentration is 3% bright orange
The mixed liquor of color is 6~7 to pH, filtering, is freeze-dried 12h, obtains stannic oxide/graphene nano piece；
2nd, graphene oxide-copper composite powder is prepared：100g copper powder is added in 40mL absolute ethyl alcohol, in room
The lower ultrasonic disperse 30min of temperature, obtains copper powder suspension；Weigh graphene oxide 0.5g~2.0g that step 1 obtains and be placed on copper powder
Ultrasonic disperse 1h is continued with 10kHz frequency in suspension, obtains the water-borne dispersions of graphene oxide and copper powder；Stone will be aoxidized
The water-borne dispersions of black alkene and copper powder are added in 500ml polytetrafluoroethylene (PTFE) ball grinder, and ball is distinguished under the conditions of 400r/min
Grind 1~7h.The mechanical milling process uses stainless steel abrading-ball, and ball material mass ratio is 10:1, process control agent is 1wt% stearic acid,
Then ball milling slurries filtration, 80 DEG C of vacuum drying 24h are removed ethanol, obtain graphene oxide-copper composite powder；
3rd, the preparation of graphene enhancing Cu-base composites：Graphene oxide-copper composite powder prepared by step 2 is added
Enter to material to be 10 in vacuum in the mould of graphite-2Pa, pressure be 25MPa and temperature be 850 DEG C under conditions of sinter
1h, room temperature is naturally cooled to, obtain graphene enhancing Cu-base composites, the die surface of described graphite, which scribbles boron nitride, to be prevented
Infiltration layer.
Embodiment two：The difference of present embodiment and embodiment one is：Step is weighed in step 2
One obtained graphene oxide is 0.5g.Other are identical with embodiment one.
Embodiment three：The difference of present embodiment and embodiment one to two is：It is ultrasonic in step 2
Frequency is that 10kHz continues 1h.Other are identical with embodiment one.
Embodiment four：The difference of present embodiment and embodiment one to three is：In ball in step 2
It is ball milling 5h under conditions of 400r/min to grind rotating speed.Other are identical with embodiment one.
Embodiment five：The difference of present embodiment and embodiment one to five is：Be in step 3
Vacuum is 10-2Pa, pressure be 25MPa and temperature be 850 DEG C under conditions of sintering 1h naturally cool to room temperature, obtain graphene
Strengthen Cu-base composites.Other are identical with embodiment one.
Beneficial effects of the present invention are verified by tests below.
Experiment one：This experiment is contrast test, prepares fine copper, and specific method is：
Copper powder after ball milling under the same terms is added in the mould that material is graphite, is 10 in vacuum-2Pa, pressure are
Sintering 1h naturally cools to room temperature under conditions of 25MPa and temperature are 850 DEG C, obtains graphene enhancing Cu-base composites, institute
The die surface for the graphite stated scribbles boron nitride impervious barrier.
Experiment two：A kind of method for preparing graphene enhancing Cu-base composites, is specifically carried out according to the following steps：
First, graphene oxide is prepared：Under conditions of ice-water bath 1g is added into the conical flask of the concentrated sulfuric acid equipped with 46mL
Graphite powder and 1g sodium nitrate, mix 20min under conditions of ice-water bath, and 6g permanganic acid is added under conditions of ice-water bath
Potassium, 40min is stirred, obtains the mixed liquor of green purple, protected under conditions of being 30 DEG C~40 DEG C in temperature by the mixed liquor of green purple
Warm 1h, 40mL distilled water is added under conditions of being then 30 DEG C~40 DEG C in temperature, in the condition that temperature is 85 DEG C~95 DEG C
Lower insulation 30min, obtain brown mixture, adds 100mL distilled water and 6mL into brown mixture at ambient temperature
Hydrogen peroxide, the mixed liquor of glassy yellow is obtained, then washed repeatedly with the hydrochloric acid solution and distilled water that mass concentration is 3% bright orange
The mixed liquor of color is 6~7 to pH, filtering, is freeze-dried 12h, obtains stannic oxide/graphene nano piece；
2nd, graphene oxide-copper composite powder is prepared：100g copper powder is added in 40mL absolute ethyl alcohol, in room
The lower ultrasonic disperse 30min of temperature, obtains copper powder suspension；Weigh the graphene oxide 0.5g that step 1 obtains and be placed on copper powder suspension
In ultrasonic disperse 1h continued with 10kHz frequency, obtain the water-borne dispersions of graphene oxide and copper powder；By graphene oxide with
The water-borne dispersions of copper powder are added in 500ml polytetrafluoroethylene (PTFE) ball grinder, and ball milling 1h is distinguished under the conditions of 400r/min.Institute
State mechanical milling process and use stainless steel abrading-ball, ball material mass ratio is 10:1, process control agent is 1wt% stearic acid, then by ball milling
Slurries filtration, 80 DEG C of vacuum drying 24h remove ethanol, obtain graphene oxide-copper composite powder；
3rd, the preparation of graphene enhancing Cu-base composites：Graphene oxide-copper composite powder prepared by step 2 is added
Enter to material to be 10 in vacuum in the mould of graphite-2Pa, pressure be 25MPa and temperature be 850 DEG C under conditions of sinter
1h, room temperature is naturally cooled to, obtain graphene enhancing Cu-base composites, the die surface of described graphite, which scribbles boron nitride, to be prevented
Infiltration layer.
It is 0.5g to weigh the graphene oxide that step 1 obtains.
Experiment three：A kind of method for preparing graphene enhancing Cu-base composites, is specifically carried out according to the following steps：
First, graphene oxide is prepared：Under conditions of ice-water bath 1g is added into the conical flask of the concentrated sulfuric acid equipped with 46mL
Graphite powder and 1g sodium nitrate, mix 20min under conditions of ice-water bath, and 6g permanganic acid is added under conditions of ice-water bath
Potassium, 40min is stirred, obtains the mixed liquor of green purple, protected under conditions of being 30 DEG C~40 DEG C in temperature by the mixed liquor of green purple
Warm 1h, 40mL distilled water is added under conditions of being then 30 DEG C~40 DEG C in temperature, in the condition that temperature is 85 DEG C~95 DEG C
Lower insulation 30min, obtain brown mixture, adds 100mL distilled water and 6mL into brown mixture at ambient temperature
Hydrogen peroxide, the mixed liquor of glassy yellow is obtained, then washed repeatedly with the hydrochloric acid solution and distilled water that mass concentration is 3% bright orange
The mixed liquor of color is 6~7 to pH, filtering, is freeze-dried 12h, obtains stannic oxide/graphene nano piece；
2nd, graphene oxide-copper composite powder is prepared：100g copper powder is added in 40mL absolute ethyl alcohol, in room
The lower ultrasonic disperse 30min of temperature, obtains copper powder suspension；Weigh the graphene oxide 0.5g that step 1 obtains and be placed on copper powder suspension
In ultrasonic disperse 1h continued with 10kHz frequency, obtain the water-borne dispersions of graphene oxide and copper powder；By graphene oxide with
The water-borne dispersions of copper powder are added in 500ml polytetrafluoroethylene (PTFE) ball grinder, and ball milling 3h is distinguished under the conditions of 400r/min.Institute
State mechanical milling process and use stainless steel abrading-ball, ball material mass ratio is 10:1, process control agent is 1wt% stearic acid, then by ball milling
Slurries filtration, 80 DEG C of vacuum drying 24h remove ethanol, obtain graphene oxide-copper composite powder；
3rd, the preparation of graphene enhancing Cu-base composites：Graphene oxide-copper composite powder prepared by step 2 is added
Enter to material to be 10 in vacuum in the mould of graphite-2Pa, pressure be 25MPa and temperature be 850 DEG C under conditions of sinter
1h, room temperature is naturally cooled to, obtain graphene enhancing Cu-base composites, the die surface of described graphite, which scribbles boron nitride, to be prevented
Infiltration layer.
It is 0.5g to weigh the graphene oxide that step 1 obtains.
Experiment four：A kind of method for preparing graphene enhancing Cu-base composites, is specifically carried out according to the following steps：
First, graphene oxide is prepared：Under conditions of ice-water bath 1g is added into the conical flask of the concentrated sulfuric acid equipped with 46mL
Graphite powder and 1g sodium nitrate, mix 20min under conditions of ice-water bath, and 6g permanganic acid is added under conditions of ice-water bath
Potassium, 40min is stirred, obtains the mixed liquor of green purple, protected under conditions of being 30 DEG C~40 DEG C in temperature by the mixed liquor of green purple
Warm 1h, 40mL distilled water is added under conditions of being then 30 DEG C~40 DEG C in temperature, in the condition that temperature is 85 DEG C~95 DEG C
Lower insulation 30min, obtain brown mixture, adds 100mL distilled water and 6mL into brown mixture at ambient temperature
Hydrogen peroxide, the mixed liquor of glassy yellow is obtained, then washed repeatedly with the hydrochloric acid solution and distilled water that mass concentration is 3% bright orange
The mixed liquor of color is 6~7 to pH, filtering, is freeze-dried 12h, obtains stannic oxide/graphene nano piece；
2nd, graphene oxide-copper composite powder is prepared：100g copper powder is added in 40mL absolute ethyl alcohol, in room
The lower ultrasonic disperse 30min of temperature, obtains copper powder suspension；Weigh the graphene oxide 0.5g that step 1 obtains and be placed on copper powder suspension
In ultrasonic disperse 1h continued with 10kHz frequency, obtain the water-borne dispersions of graphene oxide and copper powder；By graphene oxide with
The water-borne dispersions of copper powder are added in 500ml polytetrafluoroethylene (PTFE) ball grinder, and ball milling 5h is distinguished under the conditions of 400r/min.Institute
State mechanical milling process and use stainless steel abrading-ball, ball material mass ratio is 10:1, process control agent is 1 wt% stearic acid, then by ball
Slurries filtration is ground, 80 DEG C of vacuum drying 24h remove ethanol, obtain graphene oxide-copper composite powder；
3rd, the preparation of graphene enhancing Cu-base composites：Graphene oxide-copper composite powder prepared by step 2 is added
Enter to material to be 10 in vacuum in the mould of graphite-2Pa, pressure be 25MPa and temperature be 850 DEG C under conditions of sinter
1h, room temperature is naturally cooled to, obtain graphene enhancing Cu-base composites, the die surface of described graphite, which scribbles boron nitride, to be prevented
Infiltration layer.
It is 0.5g to weigh the graphene oxide that step 1 obtains.
Experiment five：A kind of method for preparing graphene enhancing Cu-base composites, is specifically carried out according to the following steps：
First, graphene oxide is prepared：Under conditions of ice-water bath 1g is added into the conical flask of the concentrated sulfuric acid equipped with 46mL
Graphite powder and 1g sodium nitrate, mix 20min under conditions of ice-water bath, and 6g permanganic acid is added under conditions of ice-water bath
Potassium, 40min is stirred, obtains the mixed liquor of green purple, protected under conditions of being 30 DEG C~40 DEG C in temperature by the mixed liquor of green purple
Warm 1h, 40mL distilled water is added under conditions of being then 30 DEG C~40 DEG C in temperature, in the condition that temperature is 85 DEG C~95 DEG C
Lower insulation 30min, obtain brown mixture, adds 100mL distilled water and 6mL into brown mixture at ambient temperature
Hydrogen peroxide, the mixed liquor of glassy yellow is obtained, then washed repeatedly with the hydrochloric acid solution and distilled water that mass concentration is 3% bright orange
The mixed liquor of color is 6~7 to pH, filtering, is freeze-dried 12h, obtains stannic oxide/graphene nano piece；
2nd, graphene oxide-copper composite powder is prepared：100g copper powder is added in 40mL absolute ethyl alcohol, in room
The lower ultrasonic disperse 30min of temperature, obtains copper powder suspension；Weigh the graphene oxide 0.5g that step 1 obtains and be placed on copper powder suspension
In ultrasonic disperse 1h continued with 10kHz frequency, obtain the water-borne dispersions of graphene oxide and copper powder；By graphene oxide with
The water-borne dispersions of copper powder are added in 500ml polytetrafluoroethylene (PTFE) ball grinder, and ball milling 7h is distinguished under the conditions of 400r/min.Institute
State mechanical milling process and use stainless steel abrading-ball, ball material mass ratio is 10:1, process control agent is 1 wt% stearic acid, then by ball
Slurries filtration is ground, 80 DEG C of vacuum drying 24h remove ethanol, obtain graphene oxide-copper composite powder；
3rd, the preparation of graphene enhancing Cu-base composites：Graphene oxide-copper composite powder prepared by step 2 is added
Enter to material to be 10 in vacuum in the mould of graphite-2Pa, pressure be 25MPa and temperature be 850 DEG C under conditions of sinter
1h, room temperature is naturally cooled to, obtain graphene enhancing Cu-base composites, the die surface of described graphite, which scribbles boron nitride, to be prevented
Infiltration layer.
It is 0.5g to weigh the graphene oxide that step 1 obtains.
Claims (3)
- A kind of 1. method for preparing graphene enhancing Cu-base composites, it is characterised in that preparing graphene strengthens copper-based composite wood The method of material is carried out according to the following steps：First, graphene oxide is prepared：1g graphite is added into the conical flask of the concentrated sulfuric acid equipped with 46mL under conditions of ice-water bath Powder and 1g sodium nitrate, mix 20min under conditions of ice-water bath, and 6g potassium permanganate is added under conditions of ice-water bath, is stirred 40min is mixed, obtains the mixed liquor of green purple, 1h is incubated under conditions of being 30 DEG C~40 DEG C in temperature by the mixed liquor of green purple, Then 40mL distilled water is added under conditions of being 30 DEG C~40 DEG C in temperature, is incubated under conditions of being 85 DEG C~95 DEG C in temperature 30min, brown mixture is obtained, add the peroxidating of 100mL distilled water and 6mL into brown mixture at ambient temperature Hydrogen, the mixed liquor of glassy yellow is obtained, then wash the mixed of glassy yellow repeatedly with the hydrochloric acid solution and distilled water that mass concentration is 3% It is 6~7 that liquid, which is closed, to pH, filtering, is freeze-dried 12h, obtains stannic oxide/graphene nano piece；2nd, graphene oxide-copper composite powder is prepared：100g copper powder is added in 40mL absolute ethyl alcohol, at room temperature Ultrasonic disperse 30min, obtain copper powder suspension；Weigh the .0g of the .5g of graphene oxide 0 that step 1 obtains~2 and be placed on copper powder and hang Ultrasonic disperse 1h is continued with 10kHz frequency in supernatant liquid, obtains the water-borne dispersions of graphene oxide and copper powder；By graphite oxide The water-borne dispersions of alkene and copper powder are added in 500ml polytetrafluoroethylene (PTFE) ball grinder, and ball milling 1 is distinguished under the conditions of 400r/min ~7h, the mechanical milling process use stainless steel abrading-ball, and ball material mass ratio is 10:1, process control agent is 1wt% stearic acid, with Ball milling slurries filtration, 80 DEG C of vacuum drying 24h are removed ethanol, obtain graphene oxide-copper composite powder afterwards；3rd, the preparation of graphene enhancing Cu-base composites：Graphene oxide-copper composite powder prepared by step 2 is added to Material for graphite mould in, vacuum is 10-2Pa, pressure is 25MPa and temperature be 850 DEG C under conditions of sinter 1h, from Room temperature so is cooled to, obtains graphene enhancing Cu-base composites, the die surface of described graphite scribbles boron nitride impervious barrier.
- A kind of 2. method for preparing graphene enhancing Cu-base composites according to claim 1, it is characterised in that step It is 0 .5g that the graphene oxide that step 1 obtains is weighed in two.
- A kind of 3. method for preparing graphene enhancing Cu-base composites according to claim 1, it is characterised in that step In two rotational speed of ball-mill be 400r/min under conditions of ball milling 5h.
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| CN112216532B (en) * | 2020-08-31 | 2023-01-03 | 河南科技大学 | Preparation method of nano graphene oxide in-situ reinforced copper-chromium electrical contact material |
| CN112809241B (en) * | 2020-12-31 | 2022-04-26 | 南京力之兴焊接材料有限公司 | Aluminum soldering paste and preparation method thereof |
| CN113481406A (en) * | 2021-07-27 | 2021-10-08 | 常州志敬石墨烯科技有限公司 | Graphene copper wire and preparation method thereof |
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