Abstract
Adhesion between two bodies is a key parameter in wear processes. At the macroscale, strong adhesive bonds are known to lead to high wear rates, as observed in clean metal-on-metal contact. Reducing the strength of the interfacial adhesion is then desirable, and techniques such as lubrication and surface passivation are employed to this end. Still, little is known about the influence of adhesion on the microscopic processes of wear. In particular, the effects of interfacial adhesion on the wear particle size and on the surface roughness evolution are not clear and are therefore addressed here by means of molecular dynamics simulations. We show that, at short timescales, the surface morphology and not the interfacial adhesion strength dictates the minimum size of wear particles. However, at longer timescales, adhesion alters the particle motion and thus the wear rate and the surface morphology.
References
Dec 15, 2000·The New England Journal of Medicine·J M SametS L Zeger
Mar 7, 2002·JAMA : the Journal of the American Medical Association·C Arden PopeGeorge D Thurston
Jun 13, 2002·Physical Review Letters·E GneccoE Meyer
May 13, 1983·Science·S KirkpatrickM P Vecchi
Feb 2, 2010·Nature Nanotechnology·Harish BhaskaranKumar Sridharan
May 21, 2010·Small·J LiuR W Carpick
Jun 26, 2010·ACS Nano·Jingjing LiuKevin T Turner
Jan 12, 2005·Journal of Physics. Condensed Matter : an Institute of Physics Journal·B N J PerssonE Tosatti
Jan 29, 2013·Nature Nanotechnology·Andre Schirmeisen
Jan 29, 2013·Nature Nanotechnology·Tevis D B Jacobs, Robert W Carpick
Jul 26, 2015·Physical Review Letters·S J EderA Vernes
Jun 7, 2016·Nature Communications·Ramin AghababaeiJean-Francois Molinari
Jul 12, 2017·Proceedings of the National Academy of Sciences of the United States of America·Ramin AghababaeiJean-François Molinari
Sep 8, 2017·ACS Applied Materials & Interfaces·Yuchong ShaoMichael L Falk
Sep 30, 2017·ACS Applied Materials & Interfaces·Jingjing LiuKevin T Turner
May 19, 2018·Physical Review Letters·Ramin AghababaeiJean-François Molinari
Mar 10, 2019·Nature Communications·Enrico MilaneseJean-François Molinari