Investigating the Wettability, Rheological, and Tribological Properties of Ammonium-Based Protic Ionic Liquids as Neat Lubricants for Steel–Steel and Steel–Aluminium Contacts

This study aims to evaluate the tribological properties of two protic ionic liquids (PILs) under different tribological conditions as a sustainable alternative for mineral oil-based neat lubricants. The synthesis of PILs in this study uses a relatively simple and less expensive method. The Fourier t...

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Bibliographic Details
Published in:Lubricants 2023-11, Vol.11 (11), p.469
Main Authors: Patro, B. Depu Kumar, Suvin, P. S., Kreivaitis, Raimondas, Gumbytė, Milda
Format: Article
Language:English
Subjects:
Acids
adsorption
Alloys
Aluminum base alloys
Analysis
Bearing steels
Coefficient of friction
Contact angle
Decomposition
Dodecylamine
Fourier transforms
Friction
Friction reduction
Investigations
Ionic liquids
Lubricants
Lubricants & lubrication
Lubricants industry
lubrication
Lubrication and lubricants
Mechanical properties
Mineral oils
protic ionic liquids
Rheological properties
Rheology
Temperature
Toxicity
Tribology
Viscosity
wear
Wear mechanisms
Wettability
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Summary:This study aims to evaluate the tribological properties of two protic ionic liquids (PILs) under different tribological conditions as a sustainable alternative for mineral oil-based neat lubricants. The synthesis of PILs in this study uses a relatively simple and less expensive method. The Fourier transform infrared (FTIR) spectroscopy results help validate the synthesised PILs’ formation. Further, their physicochemical and tribological properties were investigated. The PILs as neat lubricants were tested on a ball-on-plate reciprocating tribometer using bearing steel–bearing steel and bearing steel–aluminium alloy friction pairs at 30 °C and 80 °C. The results show that the investigated PILs significantly reduced the coefficient of friction and wear. The dodecylamine-based PILs performed better in friction and wear reduction than the other investigated lubricants. The formation of the adsorption layer on the friction pairs was assumed to be the dominant friction and wear reduction mechanism.
ISSN:2075-4442
2075-4442
DOI:10.3390/lubricants11110469