Graphene coating makes copper more resistant to plastic deformation

Zhu, Xiaofei and Zhao, Yinbo and Ma, Laipeng and Zhang, Guangping and Ren, Weicai and Peng, Xianghe and Hu, Ning and Rintoul, Llew and Bell, John M. and Yan, Cheng (2019) Graphene coating makes copper more resistant to plastic deformation. Composites Communications, 12. pp. 106-111. ISSN 2452-2139


Abstract

Nanoindentation tests and molecular dynamics (MD) simulations are conducted to investigate the effect of graphene (Gr) coating on the deformation behavior of a <001> orientation copper (Cu) substrate. Distinct displacement burst (pop-in) is observed in the load-depth curve, which is due to the fracture of the Gr coating. Compared to bare Cu, the MD simulations indicate different dislocation activities at the Gr/Cu interface. The effect of image stress confinement on the glide of dislocations in Cu is considered to be the reason responsible for the increased hardness in the Gr/Cu system.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: No Faculty
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 18 Sep 2020 03:20
Last Modified: 30 Sep 2020 01:19
Uncontrolled Keywords: copper; dislocation mobility; graphene; molecular dynamics; nanoindentation
Fields of Research (2008): 10 Technology > 1007 Nanotechnology > 100708 Nanomaterials
Fields of Research (2020): 40 ENGINEERING > 4018 Nanotechnology > 401807 Nanomaterials
Identification Number or DOI: https://doi.org/10.1016/j.coco.2019.01.006
URI: http://eprints.usq.edu.au/id/eprint/39401

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