Role of adhesion in lubrication

Authors: Biresaw, Girma; Bantchev, Grigor; Harry O Kuru, Rogers

Submitted to: American Chemical Society National Meeting
Publication Type: Abstract Only
Publication Acceptance Date: 4/14/2020
Publication Date: 3/21/2021
Citation: Biresaw, G., Bantchev, G.B., Harry-O'Kuru, R.E. 2021. Role of adhesion in lubrication. Virtual American Chemical Society Spring National Meeting & Exposition, March 21-25, 2021.

Interpretive Summary:

Technical Abstract: The performance of lubricants during tribological processes depend, in part, to their ability to adhere to friction surfaces via covalent and non-covalent bonding. This is particularly true of tribological processes that occur in the boundary and mixed-film regimes as well as those that occur under extreme conditions of pressure, temperature and speed. In non-extreme boundary conditions, simple adhesion (adsorption) of the additive is sufficient to lower friction and also protect the surfaces from wear. However, in extreme conditions, the additive must be covalently bonded to the surface to lower friction, prevent wear and damage to the surfaces, and allow the process to proceed smoothly. This presentation deals with several recently developed biobased lubricant additives and base oils that have been investigated for applications in the various lubrication regimes. The performance of these materials and the connection between their adhesion and lubrication properties will be discussed.