Insights into tribology from in situ nanoscale experiments
Insights into tribology from in situ nanoscale experiments
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DOI：
10.1557/mrs.2019.122
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发表时间：
2019-06-01
期刊：
影响因子：
5
通讯作者：
Carpick, Robert W.
中科院分区：
文献类型：
--
作者：
Jacobs, Tevis D. B.;Greiner, Christian;Carpick, Robert W.
摩擦学是对接触、滑动表面的研究，旨在解释摩擦、粘着、润滑和磨损的基本机制，并将这些知识应用于从运输和制造到生物医学和能源的各种技术。研究材料的接触和滑动是复杂的，因为界面被掩埋在视线之外，传统的实验工具无法接触到。因此，现场调查对于可视化和确定潜在的物理过程至关重要。本文介绍了通过纳米尺度的原位实验来理解摩擦学现象的关键最新进展。具体地说，重点介绍了三个关键领域的进展：(1)直接观察滑动接触的物理过程；(2)定量分析滑动和推动材料去除的化学反应(称为摩擦化学)的协同作用；(3)了解金属滑动过程中发生的表面和亚表面变形。这篇文章还概述了原位纳米尺度研究可以在未来回答关键摩擦学问题的新兴领域。
Tribology-the study of contacting, sliding surfaces-seeks to explain the fundamental mechanisms underlying friction, adhesion, lubrication, and wear, and to apply this knowledge to technologies ranging from transportation and manufacturing to biomedicine and energy. Investigating the contact and sliding of materials is complicated by the fact that the interface is buried from view, inaccessible to conventional experimental tools. In situ investigations are thus critical in visualizing and identifying the underlying physical processes. This article presents key recent advances in the understanding of tribological phenomena made possible by in situ experiments at the nanoscale. Specifically, progress in three key areas is highlighted: (1) direct observation of physical processes in the sliding contact; (2) quantitative analysis of the synergistic action of sliding and chemical reactions (known as tribochemistry) that drives material removal; and (3) understanding the surface and subsurface deformations occurring during sliding of metals. The article also outlines emerging areas where in situ nanoscale investigations can answer critical tribological questions in the future.