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Coating‐lubricant combination for improving tribo‐system performance
Author(s) -
Minami Ichiro,
He Xin,
Prakash Braham
Publication year - 2014
Publication title -
lubrication science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.632
H-Index - 36
eISSN - 1557-6833
pISSN - 0954-0075
DOI - 10.1002/ls.1269
Subject(s) - lubricant , materials science , tribology , lubrication , coating , friction coefficient , composite material , lubricity , amorphous solid , metallurgy , chemistry , organic chemistry
ABSTRACT New tribo‐systems composed of green chemicals have been investigated. Compatibility of friction modifiers with DLC was evaluated by using SRV test machine. A Zn‐free lubricant formulation showed a steady‐state friction coefficient of 0.15 for steel/steel contact. Hydrogenated DLC coating showed similar tribological properties when slid against steel. Interestingly, this lubricant showed low friction coefficient of 0.02 for hydrogen‐free amorphous DLC when slid against steel. A model friction modifier improved the running‐in performance and reduced wear for hydrogen‐free DLC, while it marginally increased steady‐state friction coefficient up to 0.04. The importance of material–lubricant combination and lubrication model has been highlighted. Copyright © 2014 John Wiley & Sons, Ltd.