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A biocompatible ionic liquid as an antiwear additive for biodegradable lubricants

journal contribution
posted on 01.01.2014, 00:00 authored by Bhawna Khemchandani, Anthony SomersAnthony Somers, Patrick HowlettPatrick Howlett, A K Jaiswal, E Sayanna, Maria ForsythMaria Forsyth
A biocompatible ionic liquid, tributyl(methyl)phosphonium diphenylphosphate, P1444DPP (IL1) was investigated as an antiwear additive and compared against Amine Phosphate (AP), one of the commonly used conventional antiwear additives in biodegradable lubricants. IL1 showed excellent antiwear performance, using a pin-on-disc tribometer, when blended in biodegradable base stocks. The steel balls after the test were analyzed using SEM-EDS techniques which confirmed the presence of phosphorous. The tribological properties under reciprocating conditions were also carried out using Optimol SRV oscillating friction and wear tester and the steel discs were observed under Atomic Force Microscopy (AFM), to show the buildup of tribofilm formed by IL1. The thickness of the lubricant film was confirmed by Elastohydrodynamic (EHD) Ultra Thin Film Measurement System. It was observed that IL1 has a better film forming ability than AP. © 2014 Elsevier Ltd.

History

Journal

Tribology International

Volume

77

Pagination

171 - 177

Publisher

Elsevier

Location

Amsterdam, The Netherlands

ISSN

0301-679X

Language

eng

Publication classification

C Journal article; C1 Refereed article in a scholarly journal

Copyright notice

2014, Elsevier