Skip to main content
padlock icon - secure page this page is secure

Experimental Investigation of MoS2 Micro-Particles as Additive for Bearing Oils

Buy Article:

$106.34 + tax (Refund Policy)

The anti-friction bearings in present day applications are exposed to severe operating conditions comprising of heavy loads and higher speeds. Under these conditions the lubricants with better anti-friction, anti-wear and extreme-pressure (EP) properties are highly desired. Molybdenum di sulphide (MoS2) has been in use as solid lubricant in industrial and automotive applications. The lamellar structure of MoS2 aid in reducing friction and wear between the contacting surfaces. When blended in liquid lubricants as additive, MoS2 can enhance their tribological performance. However, its use in liquid lubricants has been hindered due to the poor dispersion stability of macro size particles. The dispersion stability can be enhanced by reducing the particle size and by chemical functionalization of the particles. The present work reports the route for functionalization of MoS2 micro-sized particles for stable dispersion in mineral based lubricating oil and the tribo-performance investigations carried out on the blends with different concentrations of MoS2 particles. The MoS2 micro-particles have been functionalized by selective inclusion of long alkyl chains on the particle surface by TrichloroOctadecylsilane through sulphur and silane linkages. The functionalized MoS2 micro-particles have been characterized by analytical techniques like FTIR, XRD, TGA, SEM, and EDX. The functionalized MoS2 micro-particles were blended in mineral base oil in varying concentrations and tested for their tribological performance in a four-ball wear and EP tester. The experimental studies performed have reported a significant reduction in friction and wear to the order of 41% and 7% respectively for the mineral oils blended with functionalized MoS2 micro-particles. Further, the weld load representing the EP property has been enhanced by 43% with the addition of functionalized MoS2 micro-particles. Thus, from the present study it is concluded that the functionalized MoS2 micro-particles can be used as additives for bearing oil for enhanced tribological performance.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Keywords: 4-Ball Tribo-Tester; Additive; Functionalization; Molybdenum Di Sulphide; Tribology

Document Type: Research Article

Affiliations: Advanced Tribology Research Centre, CSIR-Indian Institute of Petroleum, Dehradun 248005, India

Publication date: November 1, 2016

More about this publication?
  • ADVANCED SCIENCE LETTERS is an international peer-reviewed journal with a very wide-ranging coverage, consolidates research activities in all areas of (1) Physical Sciences, (2) Biological Sciences, (3) Mathematical Sciences, (4) Engineering, (5) Computer and Information Sciences, and (6) Geosciences to publish original short communications, full research papers and timely brief (mini) reviews with authors photo and biography encompassing the basic and applied research and current developments in educational aspects of these scientific areas.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more