Atomistic aspects of ductile responses of cubic silicon carbide during nanometric cutting

S. Goel, X. Luo, R.L. Reuben, W.B. Rashid

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

Cubic silicon carbide (SiC) is an extremely hard and brittle material having unique blend of material properties which makes it suitable candidate for microelectromechanical systems and nanoelectromechanical systems applications. Although, SiC can be machined in ductile regime at nanoscale through single-point diamond turning process, the root cause of the ductile response of SiC has not been understood yet which impedes significant exploitation of this ceramic material. In this paper, molecular dynamics simulation has been carried out to investigate the atomistic aspects of ductile response of SiC during nanometric cutting process. Simulation results show that cubic SiC undergoes sp3-sp2 order-disorder transition resulting in the formation of SiC-graphene-like substance with a growth rate dependent on the cutting conditions. The disorder transition of SiC causes the ductile response during its nanometric cutting operations. It was further found out that the continuous abrasive action between the diamond tool and SiC causes simultaneous sp3-sp2 order-disorder transition of diamond tool which results in graphitization of diamond and consequent tool wear.
LanguageEnglish
Pages1-9
Number of pages9
JournalNanoscale Research Letters
Volume6
DOIs
Publication statusPublished - 11 Nov 2011

Fingerprint

Silicon carbide
silicon carbides
Diamond
Diamonds
diamonds
Order disorder transitions
disorders
causes
NEMS
brittle materials
Graphitization
graphitization
Graphite
silicon carbide
abrasives
Brittleness
Ceramic materials
exploitation
Abrasives
Graphene

Keywords

  • cubic silicon carbide
  • ductile regime nanometric cutting
  • diamond tool
  • tool wear

Cite this

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Atomistic aspects of ductile responses of cubic silicon carbide during nanometric cutting. / Goel, S.; Luo, X.; Reuben, R.L.; Rashid, W.B.

In: Nanoscale Research Letters, Vol. 6, 11.11.2011, p. 1-9.

Research output: Contribution to journalArticle

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