Enhanced Biodegradability, Lubricity and Corrosiveness of Lubricating Oil by Oleic Acid Diethanolamide Phosphate

• Main Authors: Fang Jianhua, Liang Kai, Zhang Nan, Chen Boshui
• Format: Article
• Language: English
• Published: University of Kragujevac 2012-09-01
• Series: Tribology in Industry
• Subjects: Oleic acid diethanolamide phosphate; Lubricating oil; Biodegradability; Lubricity; Corrosiveness
• Online Access: http://www.tribology.fink.rs/journals/2012/2012-3/5.pdf

Impacts of oleic acid diethanolamide phosphate (abbreviated as ODAP) as an additive on biodegradability, anti-wear capacity, friction-reducing ability and corrosiveness of an unreadily biodegradable HVI 350 mineral lubricating oil was studied. The biodegradabilities of neat lubricating oil and its formulations with ODAP were evaluated on a biodegradation tester. Furthermore, the anti-wear and friction-reducing abilities and the corrosiveness of neat oil and the formulated oils were determined on a four-ball tribotester and a copper strip corrosion tester, respectively. The results indicated that ODAP markedly enhanced biodegradability as well as anti-wear and friction-reducing abilities of the lubricating oil. On the other hand, excellent color ratings of copper strips for both neat oil and the ODAP-doped oil were obtained in the corrosion tests, demonstrating that the corrosiveness of neat oil and the doped oil was negligible, although the latter seemed to provide slightly better anti-corrosion ability.