CN103614583B - A kind of Novel high-conductivity, high-strength graphene/copper material and preparation method thereof - Google Patents
A kind of Novel high-conductivity, high-strength graphene/copper material and preparation method thereof Download PDFInfo
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- CN103614583B CN103614583B CN201310450476.0A CN201310450476A CN103614583B CN 103614583 B CN103614583 B CN 103614583B CN 201310450476 A CN201310450476 A CN 201310450476A CN 103614583 B CN103614583 B CN 103614583B
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Abstract
The invention discloses the preparation method of a kind of Novel high-conductivity, high-strength graphene/copper material, it is characterized in that: the mass percent of the composition of described material is expressed as follows: C:1.0% ~ 1.5% of Graphene state, its surplus is Cu and inevitable impurity.The method of the present invention's mechanical ball milling obtains Graphene/copper mixed powder, recycling explosive sintering mixed powder, mixed powder is made to collide in instant of detonation, extrude, rub, weld together, define fine and close matrix material, and maintain the original premium properties of Graphene, making this matrix material have the intensity higher than fine copper and electric conductivity, is a kind of excellent high-strength conductive material.
Description
Technical field
The present invention relates to a kind of Novel high-conductivity type high conductivity, high-strength graphene/copper material and preparation method thereof, belong to metal composite field.
Background technology
In the past few years, graphene composite material has attracted the concern that scientific research circle is very large, this is because it has very excellent performance, such as very high physical strength, electric property and thermal conductivity and optical transmittance.Present researchist have found the method manufacturing individual layer and multi-layer graphene and a small amount of graphene oxide, and this is by emerging in large numbers of causing graphene composite material to be widely applied.
A few days ago, in graphene composite material field, the achievement in research about Graphene/metal composite is less, and this may be because Graphene and metal matrix easily chemical reaction occur at interface.The research team of Korea Advanced Institute of Science and Technology uses chemical vapour deposition (CVD) to grow single-layer graphene in metal deposition substrate, and then the upper metal single layer of deposition, after repeatable operation, finally obtains the matrix material of Graphene/metallic multilayer structures.By the display of the microcosmic such as transmission electron microscope, molecular dynamics simulation compression testing, the spacing of graphene/nickel multilayer material is 100nm, and tensile strength is 180 times (4.0GPa) of pure nickel, exists and significantly associate between spacing with the strength of materials.Correlative study result has been distributed on NatureCommunications periodical.
But above-mentioned preparation method rests in molecule aspect, be difficult to prepare Graphene/metal-base composites on a large scale; And if adopt the method for ordinary sinter, easily there is chemical reaction in Graphene and metal matrix, makes Graphene lose its premium properties at interface.
Summary of the invention
Goal of the invention: for the deficiencies in the prior art, the object of this invention is to provide a kind of Novel high-conductivity, high strength graphite alkene/copper-based material and preparation method thereof.This preparation method can avoid high sintering temperature, makes Graphene in metallic matrix, keep original premium properties.
Technical scheme: in order to realize foregoing invention object, the technical solution used in the present invention is:
A kind of Novel high-conductivity, high strength graphite alkene copper-based material, the mass percent of described material composition is expressed as follows: Graphene state C:1.0% ~ 1.5%, and its surplus is Cu and inevitable impurity.
Its preparation method is:
(1) be 200 orders by granularity, purity be 99.99% copper powder and thickness be 5 carbon atom thickness, diameter is that the Graphene powder of 20nm mixes according to aforementioned proportion;
(2) powder mixed in step (1) is put into ball mill, carry out high-energy ball milling, ratio of grinding media to material is 10: 1, and rotating speed is 300r/min, ball milling 20h under argon shield environment, in the process make all kinds of particle in powder being knocked, extruding, distortion, broken, compound, along with the increase of Ball-milling Time, while crystal grain thinning, mutual encirclement, produces non-equilibrium alloy phase, forms supersaturated solid solution;
(3) mixed powder (5) after ball milling is loaded in the steel cylinder (4) of diameter 20mm, slightly reach 50% of theoretical density after compacting, and seal nozzle, outer emulsion explosive (3) wraps up, be placed in plastic cartridge casep (2), and insert detonator (1) on top, light detonator (1), after the fired charge of top, produce from top to bottom with the shock wave that explosion velocity is propagated, pressure can reach 6.77GPa, sharp impacts between mixed powder (5), extruding, friction, be wrapped in particle surface molten solder together, define fine and close matrix material,
(4) follow-up diffusion-sintering: the solid state sintering matrix material after explosive sintering being carried out again 980 DEG C, the time is 1h, improves the density of compacts further, thus obtained required Novel high-conductivity, high-strength graphene/copper material.
Beneficial effect of the present invention: the maximum feature of the present invention produces a kind of Novel high-conductivity, high strength graphite alkene copper-based material, and provide a kind of brand-new preparation method, and this material has higher electric conductivity and intensity.
Accompanying drawing explanation
Fig. 1 is this material explosive sintering link scheme of installation.
Embodiment
Embodiment 1:
(1) be 200 orders by granularity, purity be 99.99% copper powder and thickness be 5 carbon atom thickness, diameter is that the Graphene powder of 20nm mixes according to aforementioned proportion;
(2) powder mixed in step (1) is put into ball mill, carry out high-energy ball milling, ratio of grinding media to material is 10: 1, and rotating speed is 300r/min, ball milling 20h under argon shield environment, in the process make all kinds of particle in powder being knocked, extruding, distortion, broken, compound, along with the increase of Ball-milling Time, while crystal grain thinning, mutual encirclement, produces non-equilibrium alloy phase, forms supersaturated solid solution;
(3) mixed powder (5) after ball milling is loaded in the steel cylinder (4) of diameter 20mm, slightly reach 50% of theoretical density after compacting, and seal nozzle, outer emulsion explosive (3) wraps up, be placed in plastic cartridge casep (2), and insert detonator (1) on top, light detonator (1), after the fired charge of top, produce from top to bottom with the shock wave that explosion velocity is propagated, pressure can reach 6.77GPa, sharp impacts between mixed powder (5), extruding, friction, the molten solder of parcel work particle surface together, define fine and close matrix material,
(4) follow-up diffusion-sintering: the solid state sintering matrix material after explosive sintering being carried out again 980 DEG C, the time is 1h, improves the density of compacts further, thus obtained required Novel high-conductivity, high-strength graphene/copper material.
Through inspection, the electric conductivity of this matrix material is 115% of oxygen free copper, and under normal temperature, tensile strength reaches 326MPa, is a kind of excellent high-strength conductive material.
Claims (1)
1. a Novel high-conductivity, high-strength graphene/copper material preparation method, it is characterized in that the mass percent of the composition of described material is expressed as follows: Graphene state C:1.0% ~ 1.5%, its surplus is Cu and inevitable impurity, and its preparation method comprises following content:
(1) be 200 orders by granularity, purity be 99.99% copper powder and thickness be 5 carbon atom thickness, diameter is that the Graphene powder of 20nm mixes according to aforementioned proportion;
(2) powder mixed in step (1) is put into ball mill, carry out high-energy ball milling, ratio of grinding media to material is 10: 1, and rotating speed is 300r/min, ball milling 20h under argon shield environment, in the process make all kinds of particle in powder being knocked, extruding, distortion, broken, compound, along with the increase of Ball-milling Time, while crystal grain thinning, mutual encirclement, produces non-equilibrium alloy phase, forms supersaturated solid solution;
(3) mixed powder (5) after ball milling is loaded in the steel cylinder (4) of diameter 20mm, slightly reach 50% of theoretical density after compacting, and seal nozzle, outer emulsion explosive (3) wraps up, be placed in plastic cartridge casep (2), and insert detonator (1) on top, light detonator (1), after the fired charge of top, produce from top to bottom with the shock wave that explosion velocity is propagated, pressure can reach 6.77GPa, sharp impacts, extruding, friction between mixed powder (5), weld together, define fine and close matrix material;
(4) follow-up diffusion-sintering: the solid state sintering matrix material after explosive sintering being carried out again 980 DEG C, the time is 1h, improves the density of compacts further, thus obtained required Novel high-conductivity, high-strength graphene/copper material.
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Families Citing this family (15)
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| CN103952588B (en) * | 2014-05-08 | 2016-04-13 | 江西理工大学 | High-strength highly-conductive Graphene Cu-base composites and preparation method thereof |
| CN104805483B (en) * | 2015-05-15 | 2017-07-28 | 国家电网公司 | A kind of preparation method of high intensity and high conductivity copper bus-bar |
| TWI539043B (en) * | 2015-07-21 | 2016-06-21 | 財團法人工業技術研究院 | Method for manufacturing graphene flower |
| CN105648264B (en) * | 2016-01-13 | 2017-07-28 | 盐城工学院 | Highly conductive high abrasion graphene/Cu-base composites and preparation method thereof |
| CN105543545B (en) * | 2016-01-13 | 2017-04-26 | 盐城工学院 | Short carbon fiber composite graphene reinforced copper base wear resistant material and preparation method thereof |
| CN105714139B (en) * | 2016-02-22 | 2018-06-08 | 宁波博威合金材料股份有限公司 | Copper-graphite alkene composite material and preparation method thereof |
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| CN110257663A (en) * | 2019-07-09 | 2019-09-20 | 上海帛汉新材料科技有限公司 | A kind of preparation method of graphene enhancing Cu-base composites |
| CN112349667A (en) * | 2019-08-09 | 2021-02-09 | 昆山微电子技术研究院 | Preparation method of graphene/copper composite metal interconnection line |
| CN111020263B (en) * | 2019-12-19 | 2021-03-02 | 哈尔滨工业大学（威海） | Plastic processing preparation method of high-strength high-conductivity graphene reinforced copper-based composite material |
| CN111020279B (en) * | 2019-12-26 | 2021-08-17 | 浙江杭机新型合金材料有限公司 | High-strength high-conductivity copper-graphite composite material and preparation method thereof |
| CN112063873B (en) * | 2020-09-19 | 2021-11-26 | 广西大学 | Graphene reinforced copper-based composite material and warm-pressing forming preparation method thereof |
| CN112359244B (en) * | 2020-10-21 | 2022-02-22 | 有研工程技术研究院有限公司 | High-strength high-conductivity graphene copper composite wire and preparation method thereof |
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