In this work, the macroscopic superlubricity with an extremely low coefficient of friction (COF) of 0.004 was achieved on the friction pair of the steel/amorphous carbon (a-C) film with the lubrication of 3-hydroxypropionic acid aqueous solution (3HPA_(aq)). The excellent lubrication performance was ascribed to the solid-liquid synergistic lubrication effect between the a-C film and the 3HPA. The triboreaction occurred on the friction pair, resulting in the chemisorption of 3HPA molecules on the a-C film and the steel surface. The hydrated water layer was formed on the chemisorption layer through the hydrogen bonding with water, which contributed to the reduction of COF. Moreover, the feasible graphitization of the a-C film also played an important role on the achievement of superlubricity. This work presented a novel approach for achieving superlubricity on the diamond-like carbon (DLC) and provided support on the development of DLC lubrication in industrial applications.

在这项工作中，在 3-羟基丙酸水溶液 (3HPA _(aq)）。优异的润滑性能归因于aC膜和3HPA之间的固液协同润滑作用。摩擦副上发生摩擦反应，导致3HPA分子化学吸附在aC膜和钢表面上。通过与水的氢键作用在化学吸附层上形成水合水层，这有助于COF的降低。此外，aC薄膜的可行石墨化对实现超润滑性也起到了重要作用。这项工作提出了一种在类金刚石碳 (DLC) 上实现超润滑性的新方法，并为工业应用中 DLC 润滑的发展提供了支持。