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Experimental Study on Superlubricity of Ag Nanometer-Thick Layers by Sliding on a Macroscopic System

[+] Author Affiliations
Minoru Goto

Hino Motors, Ltd., Tokyo, Japan

F. Honda

Toyota Technological Institute, Nagoya, Japan

T. Nakahara

Tokyo Institute of Technology, Tokyo, Japan

Paper No. WTC2005-63892, pp. 439-440; 2 pages
  • World Tribology Congress III
  • World Tribology Congress III, Volume 2
  • Washington, D.C., USA, September 12–16, 2005
  • Conference Sponsors: Tribology Division
  • ISBN: 0-7918-4202-9 | eISBN: 0-7918-3767-X
  • Copyright © 2005 by ASME


The experimental study on the Ag film was carried out using a diamond pin-on-plate type tribometer under ultrahigh vacuum (UHV) conditions. The coefficient of friction varied with the film morphology in nanometric scale up to 170 nm, and superlubricity as minimum coefficient of friction 0.007 was obtained on 5-nm Ag film with network structure. RHEED and STM observation of the film showed that the film morphologies changed drastically during rubbing, and that the superlubricity of this system is attributed to the lamella gliding of Ag (111) sheets.

Copyright © 2005 by ASME



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