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Tribocorrosion evaluation of hydrogenated and silicon DLC coatings on carbon steel for use in valves, pistons and pumps in oil and gas industry

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Academic year: 2019

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Figure

Figure 1. Backscattering SEM images of cross section and linear EDS scan of: (a) H-
Figure 2. Raman spectra (a) H-DLC before wear test, (b) H-DLC after wear test and (c)
Figure 3. AFM images: (a) H-DLC before wear tests, (b) Si-DLC before wear tests, (c)
Figure 4. SEM secondary electron images and EDS linescan composition profiles of
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