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类金刚石碳：用于极端高磨损环境的表面

Diamond-Like Carbon: A Surface for Extreme, High-Wear Environments.

作者信息

Sharifi N, Smith H, Madden D, Kehoe T, Wu G, Yang L, Welbourn R J L, G Fernandez E, Clarke S M

机构信息

Institute for Energy and Environmental Flows and Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, U.K.

Institute of Functional Surfaces, School of Mechanical Engineering, University of Leeds, Leeds LS2 9JT, U.K.

出版信息

Langmuir. 2024 Jan 9;40(1):52-61. doi: 10.1021/acs.langmuir.3c01438. Epub 2023 Dec 19.

DOI:10.1021/acs.langmuir.3c01438
PMID:38113451
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10786025/
Abstract

In this study, we present an in-depth characterization of a diamond-like carbon (DLC) film, using a range of techniques to understand the structure and chemistry of the film both in the interior and particularly at the DLC/air surface and DLC/liquid interface. The DLC film is found to be a combination of sp and sp carbon, with significant oxygen present at the surface. The oxygen seems to be present as OH groups, making the DLC somewhat hydrophilic. Quartz-Crystal Microbalance (QCM) isotherms and complementary neutron reflectivity data indicate significant adsorption of a model additive, bis(2-ethylhexyl) sulfosuccinate sodium salt (AOT) surfactant, onto the DLC from water solutions and indicate the adsorbed film is a bilayer. This initial study of the structure and composition of a model surfactant is intended to give a clearer insight into how DLC and additives function as antiwear systems.

摘要

在本研究中，我们对类金刚石碳（DLC）薄膜进行了深入表征，使用一系列技术来了解薄膜内部以及特别是DLC/空气表面和DLC/液体界面处的结构和化学性质。发现DLC薄膜是sp和sp碳的组合，表面存在大量的氧。氧似乎以OH基团的形式存在，使DLC具有一定的亲水性。石英晶体微天平（QCM）等温线和互补中子反射率数据表明，一种模型添加剂，即双（2-乙基己基）磺基琥珀酸钠盐（AOT）表面活性剂，从水溶液中大量吸附到DLC上，并表明吸附膜为双层。对模型表面活性剂的结构和组成的初步研究旨在更清楚地了解DLC和添加剂作为抗磨系统的作用方式。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e51f/10786025/aa8ae08d92bd/la3c01438_0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e51f/10786025/ce0f690d33e9/la3c01438_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e51f/10786025/b2b31f23a8ae/la3c01438_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e51f/10786025/dd534dd24dc6/la3c01438_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e51f/10786025/280232e390f2/la3c01438_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e51f/10786025/b3c0029d85f7/la3c01438_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e51f/10786025/a1d325d06c41/la3c01438_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e51f/10786025/9251f8cacd55/la3c01438_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e51f/10786025/67224ebd82fb/la3c01438_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e51f/10786025/aa8ae08d92bd/la3c01438_0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e51f/10786025/ce0f690d33e9/la3c01438_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e51f/10786025/b2b31f23a8ae/la3c01438_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e51f/10786025/dd534dd24dc6/la3c01438_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e51f/10786025/280232e390f2/la3c01438_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e51f/10786025/b3c0029d85f7/la3c01438_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e51f/10786025/a1d325d06c41/la3c01438_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e51f/10786025/9251f8cacd55/la3c01438_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e51f/10786025/67224ebd82fb/la3c01438_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e51f/10786025/aa8ae08d92bd/la3c01438_0009.jpg

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本文引用的文献

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2
An Anionic Surfactant on an Anionic Substrate: Monovalent Cation Binding.阴离子表面活性剂在阴离子基质上：单价阳离子结合。
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