Can a carbon nano-coating resist metallic phase transformation in silicon substrate during nanoimpact?

Saurav Goel, Anupam Agrawal, Nadimul H Faisal

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)
206 Downloads (Pure)

Abstract

Nanomechanical response of a silicon specimen coated with a sp3 crystalline carbon coating (1.8 nm thickness) was investigated using MD simulation. A sharp conical rigid tip was impacted at the speed of 50 m/sec up to a depth of ~80% of the coating thickness. Unlike pure silicon specimen, no metallic phase transformation was observed i.e. a thin coating was able to resist Si-I to Si-II metallic phase transformation signifying that the coating could alter the stress distribution and thereby the contact tribology of the substrate. The stress state of the system, radial distribution function and the load-displacement curve were all aligned with above observations
Original languageEnglish
Pages (from-to)38-41
Number of pages4
JournalWear
Volume315
Issue number1-2
Early online date29 Mar 2014
DOIs
Publication statusPublished - 15 Jul 2014

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Mechanics of Materials

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