Effects of Pt cylinder arrays on macro-tribological properties of graphene and the SiO2/Si substrate

Effects of Pt cylinder arrays on macro-tribological properties of graphene and the SiO2/Si substrate Hexagonal arrays of Pt cylinders with different diameters were prepared using magnetron sputtering technology onto SiO2/Si substrates and also on graphene which was previously deposited onto a SiO2/Si substrate. Friction and wear properties of different samples were investigated. The surface morphologies and composition at the center of the wear track were analyzed by scanning electron microscopy, Raman spectra and X-ray photoelectron spectroscopy. Results indicated that Pt cylinders with different diameters acted as very strong pinning centers for the sliding of graphene sheets, and affected the subsequent friction. The higher the Pt surface coverage, the stronger the effect of Pt cylinders on the lubrication performance. As such, the friction and wear of large-diameter Pt cylinders on graphene and the SiO2/Si substrate were more effective in reducing the friction. On the contrary, for small-diameter Pt cylinders, the interaction between graphene and Pt cylinders played a key role in the improvement of macro-tribological properties. Overall, the Pt cylinders played an important lubrication role on the friction and wear. Graphene introduced as an adhesion layer between Pt cylinders and the SiO2/Si substrate could support both deformed and undeformed Pt cylinders. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Wear Elsevier

Effects of Pt cylinder arrays on macro-tribological properties of graphene and the SiO2/Si substrate

Loading next page...
 
/lp/elsevier/effects-of-pt-cylinder-arrays-on-macro-tribological-properties-of-bTIBjp1Z02
Publisher
Elsevier
Copyright
Copyright © 2015 Elsevier B.V.
ISSN
0043-1648
eISSN
1873-2577
D.O.I.
10.1016/j.wear.2015.02.041
Publisher site
See Article on Publisher Site

Abstract

Hexagonal arrays of Pt cylinders with different diameters were prepared using magnetron sputtering technology onto SiO2/Si substrates and also on graphene which was previously deposited onto a SiO2/Si substrate. Friction and wear properties of different samples were investigated. The surface morphologies and composition at the center of the wear track were analyzed by scanning electron microscopy, Raman spectra and X-ray photoelectron spectroscopy. Results indicated that Pt cylinders with different diameters acted as very strong pinning centers for the sliding of graphene sheets, and affected the subsequent friction. The higher the Pt surface coverage, the stronger the effect of Pt cylinders on the lubrication performance. As such, the friction and wear of large-diameter Pt cylinders on graphene and the SiO2/Si substrate were more effective in reducing the friction. On the contrary, for small-diameter Pt cylinders, the interaction between graphene and Pt cylinders played a key role in the improvement of macro-tribological properties. Overall, the Pt cylinders played an important lubrication role on the friction and wear. Graphene introduced as an adhesion layer between Pt cylinders and the SiO2/Si substrate could support both deformed and undeformed Pt cylinders.

Journal

WearElsevier

Published: May 1, 2015

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off