High strength and conductivity copper/graphene composites prepared by severe plastic deformation of graphene coated copper powder

Li, Tiejun; Wang, Yaoqi; Yang, Ming; Hou, Hongliang; Wu, Su Jun

doi:10.1016/j.msea.2021.141983

Cited by 22 publications

(9 citation statements)

References 34 publications

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“…As recently systematically reported by our research group, the hot rolling behavior of Cu nanocomposite reinforced by graphene indicates that the hot rolling process has a significant effect on both the plastic deformation of matrix and graphene, which affects the properties of composites [ 30 ]. Another plastic deformation technique, cold drawing, has recently been gradually applied to fabricate advanced graphene/metal wires using its severe plastic deformation [ 27 , 31 ]. For instance, Li et al [ 27 ] studied a graphene/Al composite wire prepared by powder metallurgy and multi-pass cold drawing, and found that the dispersion of graphene and mechanical properties of the composite could be improved during the cold drawing.…”

Section: Introductionmentioning

confidence: 99%

“…For instance, Li et al [ 27 ] studied a graphene/Al composite wire prepared by powder metallurgy and multi-pass cold drawing, and found that the dispersion of graphene and mechanical properties of the composite could be improved during the cold drawing. Li et al [ 31 ] obtained Cu/graphene composites with high mechanical and electrical properties using cold drawing. The authors found that the original agglomerated graphene could be redispersed, and finally formed a network structure.…”

Section: Introductionmentioning

confidence: 99%

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Microstructure Evolution and Properties Induced by Multi-Pass Drawing of Graphene/Copper Nanocomposite

et al. 2022

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The influence of multi-pass cold drawing on the evolution of microstructure, texture, and properties of Cu matrix composite, reinforced by in situ grown graphene, has been systematically investigated. Under continuous and severe plastic deformation, the grains in the composite were continuously refined to nanoscale. In addition, graphene in the composite could be gradually refined, exfoliated, and redispersed. Interestingly, dynamic recrystallization of the composite was formed after 80% drawing reduction and its formation mechanism was discussed. The texture of the as-drawn composite comprised a mixture of fiber textures with dominated <111> and minor <100> orientation after 99.7% severe drawing reduction. The tensile properties and electrical conductivity of the as-drawn composites were also investigated. This work provides a better guideline on the plastic deformation behavior of the advanced graphene/metal nanocomposite.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microstructure Evolution and Properties Induced by Multi-Pass Drawing of Graphene/Copper Nanocomposite

et al. 2022

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“…The dimples become smaller and shallower, leading to a pronounced decrease in the plasticity of the composite material. 40 Simultaneously, the graphene-like shape along the RD direction impedes the propagation of cracks in the TD direction. Under the combined effects of loading and cold deformation stress, the composite material deforms and fractures along the direction of maximum shear force.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

The Preparation and Properties of In Situ Grown Oriented Nitrogen-Doped Graphene-like/Copper Composite Materials

Peng,

Chen,

Fan

et al. 2024

ACS Appl. Electron. Mater.

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Graphene/copper composite materials with excellent mechanical and electrical properties are urgently needed in many industrial fields. In this study, we successfully prepared oriented nitrogen-doped graphene-like/copper (NGL/Cu) composite materials with high strength and electrical conductivity. Structural characterization reveals that NGL with a nitrogen content of 5.95 atom % is uniformly distributed on the surface of flake copper with a good orientation. Through hot-pressing sintering, a layered structure is formed within the copper matrix. The layered structure of NGL has proven effective in load transfer and impeding dislocation slip. Following cold rolling treatment, the NGL/Cu composite material exhibited a tensile strength of 435 MPa, which is 1.94 times higher than that of the pure copper matrix. Additionally, it demonstrated a high electrical conductivity of 95.1% IACS. This high-performance graphene/copper composite material holds promising prospects for achieving enhanced electronic device performance and reliability.

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“…This also realizes the directional distribution of graphene in the material [ 4 , 18 , 19 ]. Moreover, a uniform distribution of graphene on the flake powder particles has resulted in a preserved layered structure of the composite material [ 3 ]. The distribution of graphene has been found to hinder the metallurgical bonding and the recrystallization between the different powder particles during hot-pressing sintering.…”

Section: Resultsmentioning

confidence: 99%

“…In contrast, graphene has demonstrated the most excellent mechanical properties and electrical conductivity. Thus, a graphene/copper composite is expected to be the most promising copper alloy system for achieving concurrent high strength and high conductivity [ 3 ]. Shao et al fabricated a graphene nanoplate/copper (GNPs/Cu) matrix composite by using flake powder metallurgy and spark plasma sintering (SPS).…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of a Graphene Reinforced Cu–Cr–Mg Composite

et al. 2022

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To improve the graphene/copper interfacial bonding and the strength of the copper matrix, Cu–Cr–Mg alloy powder and graphene nanosheets (GNPs) have been used as raw materials in the preparation of a layered graphene/Cu–Cr–Mg composite through high-energy ball-milling and fast hot-pressing sintering. The microstructure of the composite after sintering, as well as the effect of graphene on the mechanical properties and conductivity of the composite, are also studied. The results show that the tensile strength of the composite material reached a value of 349 MPa, which is 46% higher than that of the copper matrix, and the reinforcement efficiency of graphene is as large as 136. Furthermore, the electrical conductivity of the composite material was 81.6% IACS, which is only 0.90% IACS lower than that of the copper matrix. The Cr and Mg elements are found to diffuse to the interface of the graphene/copper composite during sintering, and finely dispersed chromium carbide particles are found to significantly improve the interfacial bonding strength of the composite. Thus, graphene could effectively improve the mechanical properties of the composite while maintaining a high electrical conductivity.

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High strength and conductivity copper/graphene composites prepared by severe plastic deformation of graphene coated copper powder

Cited by 22 publications

References 34 publications

Microstructure Evolution and Properties Induced by Multi-Pass Drawing of Graphene/Copper Nanocomposite

Microstructure Evolution and Properties Induced by Multi-Pass Drawing of Graphene/Copper Nanocomposite

The Preparation and Properties of In Situ Grown Oriented Nitrogen-Doped Graphene-like/Copper Composite Materials

Microstructure and Properties of a Graphene Reinforced Cu–Cr–Mg Composite

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