The tribological and tribochemical properties of thick Ag films sliding on various metal and inorganic substrates were measured using a surface forces apparatus coupled with ex situ x-ray photoelectron spectroscopy. We observed enhanced chemical reactivity in the sheared regions compared to the unsheared regions, which we attribute to significant frictional heating in agreement with two recent simulations. It is also found that the initial topography (roughness) of the films plays a significant role in determining the friction, wear, and tribochemical reactions. The larger the surface roughness, the larger are the friction coefficients. Initially smooth surfaces, forming large continuous junctions, create large wear debris particles; whereas initially rough surfaces, forming many small junctions, create many small particles. Even though initially smooth surfaces are chemically less reactive than initially rough surfaces, they are tribochemically more reactive, forming two to three times more oxides of silver during shearing than under static conditions and organometals of silver that under normal (static) conditions do not form. The chemical reactions observed cannot be explained without including the tribological processes, such as the local stresses, temperature rises, and type of wear produced by the shearing surfaces.
Skip Nav Destination
Article navigation
7 May 2006
Research Article|
May 01 2006
Friction and tribochemical reactions occurring at shearing interfaces of nanothin silver films on various substrates
Mustafa Akbulut;
Mustafa Akbulut
Department of Chemical Engineering,
University of California
, Santa Barbara, California 93106
Search for other works by this author on:
Anna R. Godfrey Alig;
Anna R. Godfrey Alig
Department of Chemical Engineering,
University of California
, Santa Barbara, California 93106
Search for other works by this author on:
Jacob Israelachvili
Jacob Israelachvili
a)
Department of Chemical Engineering, Department of Materials, and Materials Research Laboratory,
University of California
, Santa Barbara, California 93106
Search for other works by this author on:
a)
Electronic mail: [email protected]
J. Chem. Phys. 124, 174703 (2006)
Article history
Received:
December 07 2005
Accepted:
February 09 2006
Citation
Mustafa Akbulut, Anna R. Godfrey Alig, Jacob Israelachvili; Friction and tribochemical reactions occurring at shearing interfaces of nanothin silver films on various substrates. J. Chem. Phys. 7 May 2006; 124 (17): 174703. https://doi.org/10.1063/1.2184310
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
DeePMD-kit v2: A software package for deep potential models
Jinzhe Zeng, Duo Zhang, et al.
CREST—A program for the exploration of low-energy molecular chemical space
Philipp Pracht, Stefan Grimme, et al.
Dielectric profile at the Pt(111)/water interface
Jia-Xin Zhu, Jun Cheng, et al.
Related Content
In situ analysis of the tribochemical films formed by SiC sliding against Mo in partial pressures of SO2, O2, and H2S gases
J. Vac. Sci. Technol. A (January 1996)
ToF-SIMS investigation of tribochemical surface reaction films built up by specially added cooling lubricants
J. Vac. Sci. Technol. B (March 2018)
Mechanisms of friction in diamondlike nanocomposite coatings
J. Appl. Phys. (March 2007)
Velocity dependence of nanoscale wear in atomic force microscopy
Appl. Phys. Lett. (October 2007)
Superlow friction of titanium/silicon codoped hydrogenated amorphous carbon film in the ambient air
J. Appl. Phys. (August 2010)