Lubrication of DLC Coatings with Two Tris(pentafluoroethyl)trifluorophosphate Anion-Based Ionic Liquids.

Gonzalez, R., Hernandez Battez, A., Viesca, J.L., Higuera-Garrido, A. and Fernandez-Gonzalez, A., 2013. Lubrication of DLC Coatings with Two Tris(pentafluoroethyl)trifluorophosphate Anion-Based Ionic Liquids. Tribology Transactions, 56 (5), 887 - 895 .

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DOI: 10.1080/10402004.2013.810319

Abstract

The lubrication of a Cr-DLC coating with ethyl-dimethyl-2-methoxyethylammonium tris(pentafluoroethyl)trifluoropho-sphate [(NEMM)MOE][FAP] and 1-butyl-1-methylpyrro-lidinium tris(pentafluoroethyl)trifluorophosphate [BMP] [FAP] ionic liquids (ILs) as 1 wt% additives to a polyalphaolefin (PAO 6) was studied. Zinc dialkyldithiophosphate (ZDDP) was also used as reference in order to evaluate the effectiveness of the ILs. Reciprocating ball-on-plate tribological tests at loads of 20 and 40 N were performed. The results showed that both ILs exhibited a friction reduction, especially at the lowest load tested. Antiwear properties were also improved; the PAO 6 + 1% [BMP][FAP] mixture was slightly better, close to the values for PAO 6 + 1% ZDDP. Scanning electron microscopy (SEM) images and X-ray photoelectron spectroscopy (XPS) analysis indicated that the additive–surface interaction was responsible for the tribological improvement.

Item Type:Article
ISSN:1040-2004
Additional Information:Published 06 Aug 2013. Twelve month embargo on author final version.
Subjects:UNSPECIFIED
Group:Faculty of Science and Technology
ID Code:21059
Deposited By: Unnamed user with email symplectic@symplectic
Deposited On:24 Feb 2014 12:16
Last Modified:10 Sep 2014 14:57

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