Effect of Contact Geometry on MoS2-Based Dry Film Lubricants

IF 3.5 3区工程技术 Q2 ENGINEERING, CHEMICAL

Tribology Letters Pub Date : 2026-03-13 DOI:10.1007/s11249-026-02129-w

Samuel Leventini, Ashlie Martini

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Abstract

MoS₂-based dry film lubricants are widely used in aerospace mechanisms that have different contact geometries. Standard tribotests for dry film lubricants simplify real geometries as either point or line contact to facilitate comparison of different materials or operating and environmental conditions. However, it remains unclear whether the results of a tribotest with one contact geometry can be generalized to tests or mechanisms with different contact geometries. To assess the effect of contact geometry, we measured friction and wear of three MoS₂-based dry film lubricants using reciprocating block-on-ring and pin-on-disk tests with the same initial Hertzian contact pressure and linear velocity. Friction and wear magnitudes, as well as some comparative trends between the dry film lubricants, differed for the two contact geometries. These findings encourage future studies to consider more than just point contact tribotests when evaluating MoS₂-based dry film lubricants.

Graphical Abstract

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接触几何形状对mos2基干膜润滑剂的影响

二硫化钼基干膜润滑剂广泛应用于具有不同接触几何形状的航空航天机构中。干膜润滑剂的标准摩擦试验简化了实际几何形状，无论是点接触还是线接触，以方便不同材料或操作和环境条件的比较。然而，目前尚不清楚的是，一种接触几何的摩擦试验结果是否可以推广到具有不同接触几何的试验或机构。为了评估接触几何形状的影响，我们在相同的初始赫兹接触压力和线速度下，使用块环和销盘往复试验测量了三种mos2基干膜润滑剂的摩擦和磨损。摩擦和磨损大小，以及干膜润滑剂之间的一些比较趋势，对于两种接触几何形状不同。这些发现鼓励未来的研究在评估二硫化钼基干膜润滑剂时，不仅仅考虑点接触摩擦试验。图形抽象

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Tribology Letters 工程技术-工程：化工

CiteScore

5.30

自引率

9.40%

发文量

116

审稿时长

2.5 months

期刊介绍： Tribology Letters is devoted to the development of the science of tribology and its applications, particularly focusing on publishing high-quality papers at the forefront of tribological science and that address the fundamentals of friction, lubrication, wear, or adhesion. The journal facilitates communication and exchange of seminal ideas among thousands of practitioners who are engaged worldwide in the pursuit of tribology-based science and technology.