Simultaneous achievement of high strength and high ductility in copper matrix composites with carbon nanotubes/Cu composite foams as reinforcing skeletons

Wang, Congzhen; Gan, Xueping; Tao, Jingmei; Xie, Ming; Yi, Jianhong; Liu, Yichun

doi:10.1088/1361-6528/ab49bd

Cited by 15 publications

(6 citation statements)

References 62 publications

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“…The D (I D ~ 1336 cm −1 ) and G (I G ~ 1581 cm −1 ) bands were measured to characterize the CNTs disorder degree and the binding mode of the C atom sp 2 . The I D /I G value could reflect the integrity degree of the CNT structure [ 21 ]. As shown in Figure 5 b, the I D /I G ratios of the two curves were 0.845 and 0.849, quite similar to each other, indicating almost no damage of the CNT structure during the heat treatments.…”

Section: Resultsmentioning

confidence: 99%

A Combination of Enhanced Mechanical and Electromagnetic Shielding Properties of Carbon Nanotubes Reinforced Cu-Ni Composite Foams

Wang

et al. 2021

Nanomaterials

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Carbon nanotubes (CNTs) reinforced double-layered Cu-Ni composite foams (Cu-Ni/CNT foams) were prepared through chemical plating and electrodeposition, for the purpose of combining enhanced mechanical and electromagnetic shielding properties. The microstructure characterization revealed a quite uniform dispersion of the CNTs embedded in the metal layers, even after heat treatments. The property testing showed the compressive strength, energy absorption capacity and electromagnetic shielding effectiveness (SE) of Cu-Ni/CNTs foams were significantly improved, as compared to Cu-Ni foams. The heat treatments of the composite foams resulted in an interdiffusion of the Cu and Ni layers, causing an increase of compressive strength and a slight decrease of average SE. The possible mechanisms of the property evolution are discussed.

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Section: Resultsmentioning

confidence: 99%

A Combination of Enhanced Mechanical and Electromagnetic Shielding Properties of Carbon Nanotubes Reinforced Cu-Ni Composite Foams

Wang

et al. 2021

Nanomaterials

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“…where A 0 = 1 − κ a /κ f √ ρ 0 and e is the base of natural logarithms. Recalling that γ = Mε and using ρ 0 = 1 × 10 13 m −2 (assumed initial dislocation density), M = 3.06 (Taylor factor) [32,33], and the values obtained for κ a and κ f , Equation (13) takes the following form:…”

Section: Discussionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Copper/Graphene Composites Fabricated via Accumulative Roll Bonding and Heat Treatment without a Controlled Atmosphere

da Cruz,

de Andrade Mendes Filho,

Santos

et al. 2023

Metals

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Copper and its alloys are structural materials used in industries and engineering applications due to their excellent thermal and electrical conductivity and chemical stability. Integrating graphene, known for its exceptional electrical conductivity, into the copper matrix is a promising strategy to enhance mechanical properties without sacrificing electrical conductivity. The Accumulative Roll Bonding (ARB) process can effectively and homogeneously introduce graphene into the metal matrix and is adaptable to an industrial scale. This study investigates the impact of varying graphene concentrations and two heat treatment protocols (without a controlled atmosphere) on the mechanical and electrical properties of ARBed copper/graphene composites. Optical microscopy revealed minimal voids and graphene clumps, and the energy dispersive spectroscopy analysis revealed the absence of copper oxide in some samples. The conductivity test showed little influence of the graphene content and stress relief heat treatment temperature on electrical conductivity (~86% of the International Annealed Copper Standard) within a limited number of ARB cycles. The tensile tests did not reveal a significant influence of the graphene content and stress relief heat treatment temperature on the ultimate tensile strength (220–420 MPa) and elongation (~2%).

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“…The elongation at break of CFs composites is lower than pure RPU, which is similar to the other literatures. [27,32] The increase of strength tends to sacrifice the toughness of the material, which limits the application of high-performance materials. Therefore, it is necessary to test the impact performance.…”

Section: Mechanical Properties Of Skein-like Ag-cfs/rpu Compositesmentioning

confidence: 99%

Rigid Polyurethane Composites Reinforced with Carbon Fibers Decorated with a Skein‐like Silver Coating

Yang

Zhou

et al. 2021

ChemistrySelect

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Composites with high strength and toughness are the goals that people pursue. However, the strength and toughness of composites are generally contradictory, and the performances of carbon fibers (CFs) reinforced composites mainly depend on the interfacial bonding strength between fibers and matrix. By observing the skein, we designed a coating similar to the skein on the CF surface, so that the matrix could penetrate into the cavities of the "skein" to improve the interface bonding strength of the composites. In this work, the skein-like silver coating was obtained on the CF surface by electrodeposition method, and the rigid polyurethane (RPU) matrix composites were prepared to evaluate the properties of materials.Compared with pure RPU, the strength and toughness of skeinlike Ag-CFs/RPU composites were significantly improved by 87.1 % and 70.2 %, respectively. The satisfactory results were due to the skein-like silver coating on the fiber surface. The skein structure made the interface between the matrix and the fibers stronger through penetration, and it could also play a pinning role and increase the crack propagation path. The silver coating also gave the composites better electromagnetic properties, which reflected the conductivity and electromagnetic interference shielding performances were 2.4 × 10 À 5 S/M and 59.83 dB, respectively.

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Simultaneous achievement of high strength and high ductility in copper matrix composites with carbon nanotubes/Cu composite foams as reinforcing skeletons

Cited by 15 publications

References 62 publications

A Combination of Enhanced Mechanical and Electromagnetic Shielding Properties of Carbon Nanotubes Reinforced Cu-Ni Composite Foams

A Combination of Enhanced Mechanical and Electromagnetic Shielding Properties of Carbon Nanotubes Reinforced Cu-Ni Composite Foams

Microstructure and Mechanical Properties of Copper/Graphene Composites Fabricated via Accumulative Roll Bonding and Heat Treatment without a Controlled Atmosphere

Rigid Polyurethane Composites Reinforced with Carbon Fibers Decorated with a Skein‐like Silver Coating

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