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Diesel-lubricated ta-C coatings

: Makowski, S.; Weihnacht, V.; Leson, A.


Lubrication science 25 (2013), No.4, pp.269-274
ISSN: 0954-0075
ISSN: 1557-6833
Journal Article
Fraunhofer IWS ()
Biodiesel; Diesel; DLC; superlubricity; ta-C; ultra-low friction

Samples coated with tetrahedral amorphous carbon were investigated in two different oscillating test setups regarding their friction and wear properties. As lubricants petrodiesel, rapeseed methyl ester biodiesel and a mixture thereof were used. Compared with a petrodiesel-lubricated uncoated system, friction was reduced for more than 50% when a tetrahedral amorphous carbon coating was applied and biodiesel added to the lubricant. Impurities of monoglycerides are assumed to be the cause for the friction-modifying effect.