Vegetable oil-based lubricants—A review of oxidation

Vegetable oils are being investigated as a potential source of environmentally favourable lubricants, due to a combination of biodegradability, renewability and excellent lubrication performance. Low oxidation and thermal stability, poor low-temperature properties and narrow range of available visco...

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Bibliographic Details
Published in:Tribology international 2007-07, Vol.40 (7), p.1035-1046
Main Authors: Fox, N.J., Stachowiak, G.W.
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Friction, wear, lubrication
Lubricant
Machine components
Mechanical engineering. Machine design
Oxidation
Oxidation stability
Review
Vegetable oil
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Summary:Vegetable oils are being investigated as a potential source of environmentally favourable lubricants, due to a combination of biodegradability, renewability and excellent lubrication performance. Low oxidation and thermal stability, poor low-temperature properties and narrow range of available viscosities, however, limit their potential application as industrial lubricants. This review addresses oxidation as a limitation of vegetable oil-based lubricants. The basic mechanism of vegetable oil autoxidation is presented, along with methods used to monitor and analyse the products of oxidation. The potential impact of such oxidation products on lubrication performance is discussed. A brief discussion of methods used to assess and improve oxidation stability completes the review.
ISSN:0301-679X
1879-2464
DOI:10.1016/j.triboint.2006.10.001