Press releases 2019

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  • Tribology: Design Rules for Extremely Low Coefficients of Friction / 2019

    Elucidating the Atomic Mechanism of Superlubricity

    Press release (Nr. 1) - Fraunhofer IWS Dresden / 11.1.2019

    Oleic acid (colored) forms chemical bonds with both ta-C surfaces (black). Movement causes the oleic acid to pull, a hydroxyl group splits off and superlubricity is formed.
    © Fraunhofer-Institut für Werkstoffmechanik IWM

    The phenomenon of so-called superlubricity is known, but so far the explanation at the atomic level has been missing: for example, how does extremely low friction occur in bearings? Researchers from the Fraunhofer Institutes IWM and IWS jointly deciphered a universal mechanism of superlubricity for certain diamond-like carbon layers in combination with organic lubricants. Based on this knowledge, it is now possible to formulate design rules for supra lubricating layer-lubricant combinations. The results are presented in an article in Nature Communications, volume 10.

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