Radiation damage resistance and interface stability of copper–graphene nanolayered composite

Huang, Hai; Tang, Xiaobin; Chen, Feida; Yang, Yuning; Liu, Jian; Li, Huan; Chen, Da

doi:10.1016/j.jnucmat.2015.02.003

Cited by 79 publications

(34 citation statements)

References 23 publications

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“…Huang et al [25] found that layered structures can effectively improve the mechanical properties and interfacial stability of graphene/copper composites. To avoid the initial dislocation or stress generation, the length of the analog box along the X and Y axes should be set to an integer multiple of the diameter of the graphene/copper composites, and the insertion position of graphene is the integer lattice constant of copper [26].…”

Section: Mechanical Models and Methods Of Graphene/copper Layered Commentioning

confidence: 99%

The Effect of Ion Irradiation Induced Defects on Mechanical Properties of Graphene/Copper Layered Nanocomposites

Yao

Fan

2019

Metals

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One of the miraculous functions of graphene is to use its defects to alter the material properties of graphene composites and, thereby, expand the application of graphene in other fields. In this paper, various defects have been created in graphene by using ion irradiation. Defective graphene is sandwiched between two copper layers. A numerical model of Graphene/Copper layered composites after irradiation damage was established by the molecular dynamics method. The effects of ion irradiation and temperature coupling on defective graphene/copper composites were studied. The results show that there are a lot of empty defects in graphene after irradiation injury, which will produce more incomplete bonding. Although the bonds between carbon atoms can be weakened, defective graphene still enhances the mechanical properties of pure copper. At the same time, the location and arrangement of defects have a great influence on the mechanical stability of graphene/copper composites, and the arrangement of empty defects has different effects on deformation behavior and the stress transfer mechanism. It can be concluded that the defects formed by radiation have an effect on the physical properties of two-dimensional materials. Therefore, irradiation technology can be used to artificially control the formation of defects, and then make appropriate adjustments to their properties. This can not only optimize the radiation resistance and mechanical properties of nuclear materials, but also expand the application of graphene in electronic devices and other fields.

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Section: Mechanical Models and Methods Of Graphene/copper Layered Commentioning

confidence: 99%

The Effect of Ion Irradiation Induced Defects on Mechanical Properties of Graphene/Copper Layered Nanocomposites

Yao

Fan

2019

Metals

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“…What these TEM images suggest is that the interface of W 15 /G appeared discernible after irradiation due to a monolayer graphene embedded between W layers. Although monolayer graphene is just a single layer of carbon atom, the W/G multilayer system can resist radiation damage to some extent due to the role of the W/G interfaces acting as sinks for defects, which is theoretically predicted by Huang et al with the MD method . Just like traditional bimetallic multilayer nanofilms, the design of metal–graphene multilayer nanofilms is a new strategy for releasing defects and reducing radiation damage.…”

Section: Thermal Resistance Induced By Graphene Layersmentioning

confidence: 99%

Significant Radiation Tolerance and Moderate Reduction in Thermal Transport of a Tungsten Nanofilm by Inserting Monolayer Graphene

Zhao

et al. 2016

Advanced Materials

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Tungsten-graphene multilayer composites are fabricated using a stacking method. The thermal resistance induced by the graphene interlayer is moderate. An ion-implantation method is used to verify the radiation tolerance. The results show that graphene inserted among tungsten films plays a dominant role in reducing radiation damage. Furthermore, the performance of different tungsten period-thicknesses in radiation tolerance is systematically analyzed.

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“…In our previous work, a copper–graphene nanocomposite (CGNC) system was adopted and observed under collision cascades by atomistic simulations16. Copper was used as the matrix material because it is an ideal metal for fundamental radiation damage studies and has reliable interatomic potentials in MD simulations231718.…”

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confidence: 99%

“…Copper was used as the matrix material because it is an ideal metal for fundamental radiation damage studies and has reliable interatomic potentials in MD simulations231718. The simulation results showed that the surviving defects in the bulk region of CGNC were always less than those of pure copper, thereby implying that CGNC resulting from copper–graphene (Cu–C_gr) interfaces exhibited the excellent radiation resistance16. The excellent radiation resistance of V-graphene nanocomposite was also demonstrated by the He + irradiation experiments of Kim et al 19…”

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confidence: 99%

“…. However, it was also found that a primary knock-on atom (PKA) with the higher energy corresponded to the worse radiation damage of graphene in CGNC, eventually causing the copper atoms near the damage region of graphene to dissolve and form a columnar block through the region of graphene damage (GD)16. Note that PKAs are the atoms directly struck by a high-energy neutron or incident ion in a crystalline material and can launch displacement cascades.…”

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confidence: 99%

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Graphene damage effects on radiation-resistance and configuration of copper–graphene nanocomposite under irradiation: A molecular dynamics study

Huang

Tang

Chen

et al. 2016

Sci Rep

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Metal–graphene nanocomposite is a kind of potential radiation tolerant material. Graphene damage of the composite is inevitable within radiation environments. In this paper, two kinds of copper–graphene nanocomposite (CGNC) systems containing perfect graphene and prefabricated damage graphene, respectively, were adopted to expound the influences of graphene damage on the properties (radiation-resistance and configuration) of CGNC under irradiation by atomistic simulations. In the CGNC containing perfect graphene, the increasing graphene damage induced by the increase of the number of cascades, did not obviously impair the role of copper–graphene interface in keeping the properties of CGNC. In the CGNC containing prefabricated damage graphene, the properties of CGNC would significantly deteriorate once the radius of prefabricated damage exceeds 10 Å, and even stacking fault tetrahedral would occur in the CGNC. The results highlighted that prefabricated graphene damage have greater effects on the change of the properties of CGNC. Therefore, it is very necessary to maintain the structural integrity of graphene for improving the radiation-resistance and configuration of CGNC.

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Radiation damage resistance and interface stability of copper–graphene nanolayered composite

Cited by 79 publications

References 23 publications

The Effect of Ion Irradiation Induced Defects on Mechanical Properties of Graphene/Copper Layered Nanocomposites

The Effect of Ion Irradiation Induced Defects on Mechanical Properties of Graphene/Copper Layered Nanocomposites

Significant Radiation Tolerance and Moderate Reduction in Thermal Transport of a Tungsten Nanofilm by Inserting Monolayer Graphene

Graphene damage effects on radiation-resistance and configuration of copper–graphene nanocomposite under irradiation: A molecular dynamics study

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