Electrochemical pulsed deposition of diamond-like films by powerful coulostatic discharge in dimethylsulfoxide solution of lithium acetylide

We have demonstrated the possibility of diamond-like carbon film deposition onto the stainless steel supports under the action of single powerful coulostatic anodic discharges generated by a capacitor battery (700 μF, 1200 V) in a dimethylsulfoxide solution of lithium acetylide. Raman spectra of the deposited films are characterized by two peaks centered at 1580 (G-peak) and 1429 cm−1. From their analysis we have concluded that the films consist of a set of various carbon forms including more than 50% of sp3 phase. The structure of the deposited films transformed significantly under thermal treatment at ⩾300 °C.