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

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

Langmuir

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

Published: January 2024

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.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10786025PMC
http://dx.doi.org/10.1021/acs.langmuir.3c01438DOI Listing

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