Electrodeposition of Diamond-like Carbon (DLC) Films on Mg by Plasma Electrolysis

Abstract

Diamond-like carbon (DLC) films were deposited on Mg substrate in CH 3 OH and KNO 3 solution by the liquid-phase electrodeposition technique at ambient pressure and temperature. The applied voltage between the electrodes was low (130 V) due to the use of conductive inorganic liquids. The surface morphology was examined by Scanning Electron Microscopy (SEM). Corrosion performance of the films was investigated by potentiodynamic polararization tests and electrochemical impedance spectroscopy (EIS) in 3.5% NaCl solution. The structure of the films was characterized by X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. Raman spectroscopy analysis of the films revealed two broad bands at approximately 1369.5 and 1554.7 cm bonding, which is also in accordance with the results of XPS spectra. SEM showed that DLC film was uniform, homogeneous but rough. Potentiodynamic polarization curve and EIS indicated the corrosion resistance of the Mg substrate was markedly improved by DLC films. A mechanism for the formation of sp 3 and sp 2 hybridizations is proposed.

Influence of Morphology of Highly Ordered Mesoporous Carbon Replica on Electrochemical Properties of Air Electrodes with Pt-Ru Electrocatalyst/Carbon Replica Support in Nonaqueous Electrolyte Solution

“…These two peaks were typically observed in the Raman spectrum for carbon samples. 43,44 No peaks corresponded to Pt-Ru phase were observed in the spectrum for Pt-Ru/CR10, even though Pt-Ru/CR10 showed slightly smaller peaks than CR10. These results indicate that no major changes on the bonding structure occurred by loading the Pt-Ru electrocatalyst into the CR support.…”

A machine learning approach for the automated classification of bulk sp2 and sp3 carbon materials

“…Figure 6 shows five Raman spectra from the literature classified as DLC. [103][104][105] The spectra are characterized by having a background that overlaps the G-and D-bands. These spectra were submitted to our model, and they were all classified as PLCH instead.…”

“…Figure 6 shows five Raman spectra from the literature classified as DLC 103–105 . The spectra are characterized by having a background that overlaps the G‐ and D‐ bands.…”