Graphene coating makes copper more resistant to plastic deformation

Xiaofei Zhu, Yinbo Zhao, Laipeng Ma, Guangping Zhang, Weicai Ren, Xianghe Peng, Ning Hu, Llew Rintoul, John M. Bell, Cheng Yan

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)106-111
Number of pages6
JournalComposites Communications
Volume12
DOIs
Publication statusPublished - 2019 Apr
Externally publishedYes

Keywords

  • copper
  • dislocation mobility
  • graphene
  • molecular dynamics
  • nanoindentation

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Polymers and Plastics
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Graphene coating makes copper more resistant to plastic deformation'. Together they form a unique fingerprint.

Cite this