Towards an atomic-scale understanding of interface characteristics in graphene/Al composites

Teng, Haoyu; Jiang, Yuanyuan; Tan, Zhanqiu; Liu, Pan; Fan, Genlian; Xiong, Ding‐Bang; Li, Zhiqiang

doi:10.1016/j.mtcomm.2022.104240

Cited by 2 publications

(1 citation statement)

References 26 publications

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“…Jiang et al 21 investigated three interface states with different microstructures and found that the Gr−Al composite with dense interfaces without carbide exhibits higher strength and ductility. Teng et al 22 conducted atomic-scale observations of the Al−C directly bonded interface in graphene/ aluminum composites using HRTEM. The measured distance between the Al−C interface was in the range of 3−4 Å, and EELS results showed that there was no interdiffusion of Al and C atoms at the Al−C interface.…”

Section: Introductionmentioning

confidence: 99%

Atomically Resolved Structure of the Directly Bonded Aluminum–Carbon Interface in Aluminum–Graphite Composites by Solid-State Friction Stir Processing: Im plications for a High-Performance Aluminum Conductor

Liu

Chen

Shi

et al. 2023

ACS Appl. Nano Mater.

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The unique aluminum–carbon interface without carbide, which is termed as the directly bonded aluminum–carbon interface, is a recently reported remarkable structure for simultaneously enhancing the load/electron transfer properties of aluminum conductors. In this paper, the structure of the directly bonded aluminum–carbon interface in aluminum–carbon composites fabricated by solid-state friction stir processing is reported on an atomic scale for the first time. The atomically resolved structure of two typical interfaces, Al-200 | G-end interface and Al-311 | G-side interface, are investigated by using high-resolution transmission electron microscopy. Interfacial distance analysis shows that both interfaces are bonded via chemical bonds, other than van der Waals forces. The Al-200 | G-end interface is found to be in a semicoherent mode, in which every five Al-(200) planes are bonded directly with three basal planes in graphite. Atomically resolved interfacial matching patterns of the Al-311 | G-side interface are proposed based on the observed atomic plane matching relationship. This work provides new insights into the atomic scale of the aluminum–carbon interface for the development of high-performance aluminum conductors.

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Section: Introductionmentioning

confidence: 99%

Atomically Resolved Structure of the Directly Bonded Aluminum–Carbon Interface in Aluminum–Graphite Composites by Solid-State Friction Stir Processing: Im plications for a High-Performance Aluminum Conductor

Liu

Chen

Shi

et al. 2023

ACS Appl. Nano Mater.

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High mechanical properties of CNTs/Al composites achieved by second phase refinement and reinforcement dispersion via hot extrusion

Chen,

Huang,

Lei

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part E:

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The carbon nanotubes (CNTs) reinforced 2A70 alloy by the coating of ZrO2 (ZrO2@CNTs/2A70) are processed by a hot extrusion process. The microstructure and mechanical properties of ZrO2@CNTs/2A70 composites were investigated in this study. The results show that the second phase of the composites is broken and uniformly dispersed under the action of shear force and the second phase as well as the ZrO2@CNTs reinforcement is uniformly distributed along the extrusion direction. The hot extrusion process eliminates the cast defects and improves the reinforcing phase's dispersion and the material's mechanical properties are significantly improved. At the extrusion ratio of 25, the composites exhibited notable enhancements in their mechanical properties, as evidenced by a significant increase in hardness, yield strength (YS), ultimate tensile strength (UTS), and elongation (EL), with respective values of 141.7 HV, 237.4 MPa, 309.7 MPa and 13.9%. These values were higher than those obtained from cast composites by 17.5%, 20.0%, 20.9% and 152.7%, respectively. The fracture characteristics of the composite are mainly ductile fractures. Besides, the extruded composites are strengthened mainly by grain refinement and load transfer mechanism.

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Towards an atomic-scale understanding of interface characteristics in graphene/Al composites

Cited by 2 publications

References 26 publications

Atomically Resolved Structure of the Directly Bonded Aluminum–Carbon Interface in Aluminum–Graphite Composites by Solid-State Friction Stir Processing: Im plications for a High-Performance Aluminum Conductor

Atomically Resolved Structure of the Directly Bonded Aluminum–Carbon Interface in Aluminum–Graphite Composites by Solid-State Friction Stir Processing: Im plications for a High-Performance Aluminum Conductor

High mechanical properties of CNTs/Al composites achieved by second phase refinement and reinforcement dispersion via hot extrusion

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