Non-Empirical Law for Nanoscale Atom-by-Atom Wear

Research output: Contribution to journalArticlepeer-review

Abstract

Wear of contact materials results in energy loss and device failure. Conventionally, wear is described by empirical laws such as the Archard's law; however, the fundamental physical and chemical origins of the empirical law have long been elusive, and moreover empirical wear laws do not always hold for nanoscale contact, collaboratively hindering the development of high-durable tribosystems. Here, a non-empirical and robustly applicable wear law for nanoscale contact situations is proposed. The proposed wear law successfully unveils why the nanoscale wear behaviors do not obey the description by Archard's law in all cases although still obey it in certain experiments. The robustness and applicability of the proposed wear law is validated by atomistic simulations. This work affords a way to calculate wear at nanoscale contact robustly and theoretically, and will contribute to developing design principles for wear reduction.

Original languageEnglish
Article number2002827
JournalAdvanced Science
Volume8
Issue number2
DOIs
Publication statusPublished - 2021 Jan 20

Keywords

  • diamond-like carbon
  • interfacial bonds
  • molecular dynamics
  • nanoscale wear law
  • wear

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Chemical Engineering(all)
  • Biochemistry, Genetics and Molecular Biology (miscellaneous)
  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Non-Empirical Law for Nanoscale Atom-by-Atom Wear'. Together they form a unique fingerprint.

Cite this