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Nanoindentation of thin copper coatings

In English

Författare

Summary, in English

The structure of interest is a thin, metallic coating of fcc copper, of thickness down to a few nanometers only, resting on a stiffer substrate. The elastic and plastic properties of the thin coating using nanoindentation under different geometrical features such as size of the indenter and coating thickness are determined. The force-displacement curve is monitored during indentation and the precise conditions for the occurrence of so called pop-ins during loading are investigated. To simulate the nanoindentation process, a molecular dynamics approach is used, where an infinitely stiff indenter is pushed into the coating under displacement control. The coating is modeled as a thin rectangular plate, with the bottom atom layers locked from movement, simulating the stiffer substrate, and periodic boundary conditions in the plane of the plate are applied.

Avdelning/ar

Publiceringsår

2014

Språk

Engelska

Sidor

417-420

Publikation/Tidskrift/Serie

Materials Structure & Micromechanics of Fracture VII (Key Engineering Materials)

Volym

592-593

Dokumenttyp

Konferensbidrag

Förlag

Trans Tech Publications

Ämne

  • Applied Mechanics

Nyckelord

  • Nanoindentation
  • molecular dynamics
  • thin coating

Conference name

7th International Conference on Materials Structure and Micromechanics of Fracture (MSMF 7)

Conference date

2013-07-01 - 2013-07-03

Conference place

Brno, Czech Republic

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1013-9826