Diamond-like carbon (DLC) films were electrodeposited on aluminum from acet
onitrile with a pulse-modulated power at room temperature. The films were g
rey with 1 mum in thickness, The resistivity of the films was of the order
of 10(7) Omega cm The films were characterized by X-ray photoelectron spect
roscopy (XPS) and Raman spectroscopy. XPS shows that the main composition o
f the films is carbon, Raman spectra indicate that typical DLC films were f
ormed when high potential (> 800 V) was applied.