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薄膜润滑接触的原位化学映射

In Situ Chemical Mapping of the Thin-Film Lubricated Contact.

作者信息

Mungroo Ashley, Mazuyer Denis, Cayer-Barrioz Juliette

机构信息

Laboratoire de Tribologie et Dynamique des Systèmes, CNRS UMR 5513, Ecole centrale de Lyon, 36 avenue Guy de Collongue, Ecully Cedex, 69134, France.

Ecole centrale de Lyon, 36 avenue guy de collongue, Ecully Cedex, 69134, France.

出版信息

Langmuir. 2024 Oct 22;40(42):22068-22076. doi: 10.1021/acs.langmuir.4c02403. Epub 2024 Oct 9.

DOI:10.1021/acs.langmuir.4c02403
PMID:39383045
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11500493/
Abstract

In this article, we propose a direct measurement of the distribution of two different chemical species in a thin-film lubricated contact under pure rolling conditions. The two chemical species were a carbonyl from an ester bond of a polyalphametacrylate (PAMA) polymer and an ether bond of a polyalphalycol (PAG) molecule, formulated in low-viscosity fluids using a mineral polyalphaolefin (PAO). A full chemical mapping of the lubricated contact region was provided thanks to the Bastet tribometer consisting of a ball-on-disk tribometer placed under a microscope coupled with an infrared spectrometer. By following the specific infrared stretching band of these two species in the inlet, contact, and cavitation areas, we showed how these molecules penetrate the high-pressure contact zone and participate in the film-formation.

摘要

在本文中，我们提出了一种在纯滚动条件下对薄膜润滑接触中两种不同化学物质分布进行直接测量的方法。这两种化学物质分别是聚α-甲基丙烯酸酯（PAMA）聚合物酯键中的羰基和聚α-二醇（PAG）分子醚键中的羰基，它们使用矿物聚α-烯烃（PAO）配制在低粘度流体中。借助由置于显微镜下的球盘摩擦磨损试验机与红外光谱仪组成的巴斯德摩擦磨损试验机，提供了润滑接触区域的完整化学图谱。通过追踪这两种物质在入口、接触和空化区域的特定红外伸缩带，我们展示了这些分子如何穿透高压接触区并参与成膜过程。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c94d/11500493/9641545f7ed7/la4c02403_0010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c94d/11500493/1925cba9dd04/la4c02403_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c94d/11500493/8c756a245bab/la4c02403_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c94d/11500493/561599a1a598/la4c02403_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c94d/11500493/e7b1e4883058/la4c02403_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c94d/11500493/23360ab1f956/la4c02403_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c94d/11500493/e5f33f467db6/la4c02403_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c94d/11500493/0acd448b0603/la4c02403_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c94d/11500493/96c7516b163a/la4c02403_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c94d/11500493/607519772bd2/la4c02403_0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c94d/11500493/9641545f7ed7/la4c02403_0010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c94d/11500493/1925cba9dd04/la4c02403_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c94d/11500493/8c756a245bab/la4c02403_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c94d/11500493/561599a1a598/la4c02403_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c94d/11500493/e7b1e4883058/la4c02403_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c94d/11500493/23360ab1f956/la4c02403_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c94d/11500493/e5f33f467db6/la4c02403_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c94d/11500493/0acd448b0603/la4c02403_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c94d/11500493/96c7516b163a/la4c02403_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c94d/11500493/607519772bd2/la4c02403_0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c94d/11500493/9641545f7ed7/la4c02403_0010.jpg

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本文引用的文献

1
Polymeric Friction Modifiers: Influence of Anchoring Chemistry on Their Adsorption and Effectiveness.聚合物摩擦改进剂：锚固化学对其吸附及有效性的影响
Langmuir. 2022 Sep 20;38(37):11451-11458. doi: 10.1021/acs.langmuir.2c01782. Epub 2022 Sep 9.
2
Adsorption of Organic Friction Modifier Additives.有机摩擦改性剂添加剂的吸附
Langmuir. 2020 Feb 11;36(5):1147-1155. doi: 10.1021/acs.langmuir.9b03668. Epub 2020 Feb 3.