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Diamond-Like Carbon: A Surface for Extreme, High-Wear Environments
- Source :
- Langmuir; January 2024, Vol. 40 Issue: 1 p52-61, 10p
- Publication Year :
- 2024
-
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 sp2and sp3carbon, 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.
Details
- Language :
- English
- ISSN :
- 07437463 and 15205827
- Volume :
- 40
- Issue :
- 1
- Database :
- Supplemental Index
- Journal :
- Langmuir
- Publication Type :
- Periodical
- Accession number :
- ejs64943524
- Full Text :
- https://doi.org/10.1021/acs.langmuir.3c01438