Insights on low-friction mechanism of amorphous carbon films from reactive molecular dynamics study
- Authors
- Li, Xiaowei; Wang, Aiying; Lee, Kwang-Ryeol
- Issue Date
- 2019-03
- Publisher
- ELSEVIER SCI LTD
- Citation
- TRIBOLOGY INTERNATIONAL, v.131, pp.567 - 578
- Abstract
- The dependence of friction behaviors of the self-mated a-C system on sliding velocity, v, and contact pressure, P, was investigated systematically by reactive molecular dynamics simulation. Results demonstrated that the friction coefficient and sp(3)-to-sp(2) transformation of interfacial structure were more sensitive to the contact pressure than the sliding velocity. By analyzing the relation of friction coefficient and interfacial hybridization structure with P/v ratio, it suggested that the low friction coefficient, which was accompanied by the low sp(2) fraction, was strongly dependent on the passivation of friction interface as the primary mechanism. These findings disclose the proof for passivation mechanism mentioned in previous experiments, and also provide the potential strategy to fabricate new nanocomposite a-C films by surface/interface modification for tribo-applications.
- Keywords
- DIAMOND-LIKE CARBON; TOTAL-ENERGY CALCULATIONS; STRUCTURAL-PROPERTIES; SLIDING VELOCITY; WEAR BEHAVIOR; COATINGS; DLC; TRANSFORMATION; SIMULATIONS; DEPENDENCE; DIAMOND-LIKE CARBON; TOTAL-ENERGY CALCULATIONS; STRUCTURAL-PROPERTIES; SLIDING VELOCITY; WEAR BEHAVIOR; COATINGS; DLC; TRANSFORMATION; SIMULATIONS; DEPENDENCE; Friction behavior; Amorphous carbon; Passivation or graphitization mechanism; Reactive molecular dynamics
- ISSN
- 0301-679X
- URI
- https://pubs.kist.re.kr/handle/201004/120264
- DOI
- 10.1016/j.triboint.2018.11.021
- Appears in Collections:
- KIST Article > 2019
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.