Gao Kai, Bin Wang, Berman Diana, Ren Yilong, Luo Jianbin, Xie Guoxin
State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China.
Institute of New Materials and Advanced Manufacturing, Beijing Academy of Science and Technology, Beijing 100084, China.
Nano Lett. 2023 Aug 9;23(15):6823-6830. doi: 10.1021/acs.nanolett.3c00611. Epub 2023 Jul 24.
The high-flash heat generated by direct contact at asperity tips under high contact stress and shear significantly promotes the tribocatalytic reaction between a lubricating medium and a friction interface. Macroscale superlubricity can be achieved by using additives with good lubrication properties to promote the decomposition and transformation of a lubricating medium to form an ultralow shear interface during the friction process. This paper proposed a way to achieve self-adaptive oil-based macroscale superlubricity on different tribopairs, including steel-steel and steel-DLC (diamond-like carbon), which is based on the excellent lubricating performance of black phosphorus with active oxidation and the catalytic cleavage behavior of oil molecules on the surface of oBP. This work potentially expands the industrial application of superlubricity.
在高接触应力和剪切力作用下，粗糙尖端直接接触产生的高闪热显著促进了润滑介质与摩擦界面之间的摩擦催化反应。通过使用具有良好润滑性能的添加剂来促进润滑介质的分解和转化，从而在摩擦过程中形成超低剪切界面，可实现宏观尺度的超润滑。本文提出了一种在不同摩擦副（包括钢-钢和钢-DLC（类金刚石碳））上实现自适应油基宏观尺度超润滑的方法，该方法基于具有活性氧化的黑磷的优异润滑性能以及油分子在氧化黑磷表面的催化裂解行为。这项工作有望扩大超润滑的工业应用。
