Hydrogen stability in hydrogenated amorphous carbon films with polymer-like and diamond-like structure

Effects of hydrogen incorporation in the formation of hydrogenated diamond-like carbon films

The formation process of sp hybridized carbon networks (i.e., diamond-like structures) in hydrogenated diamond-like carbon (DLC) films has been studied with the use of molecular dynamics (MD) simulations. A recent study [Y. Murakami, S. Horiguchi, and S. Hamaguchi, Phys. Rev. E. (2010) in press] has shown that a sufficient supply of hydrogen in the form of hydrocarbon species CH3 as deposition ...

Bonding in hydrogenated diamond-like carbon by Raman spectroscopy

We study the 514 and 244 nm Raman spectra of a wide variety of hydrogenated amorphous carbons (a-C:H). The hydrogen content can be estimated from the slope of the photoluminescence background (PL) of the spectra measured at 514.5 nm. Generally, the evolution of the sp and sp phases is not independent for as-deposited a-C:H samples. This, in principle, allows us to derive their structural and op...

24 Tribology of Diamond , Diamond - Like Carbon , and Related Films

Diamond, diamond-like carbon (DLC), and other related materials (i.e., carbon nitride and cubic boron nitride [CBN]) are some of the hardest materials known and offer several other outstanding properties, such as high mechanical strength, chemical inertness, and very attractive friction and wear properties, that make them good prospects for a wide range of tribological applications, including r...

Cryogenic vacuum tribology of diamond and diamond-like carbon films

Friction measurements have been performed on microcrystalline, ultrananocrystalline, and diamond-like carbon DLC films with natural diamond counterfaces in the temperature range of 8 K to room temperature. All films exhibit low friction 0.1 in air at room temperature. In ultrahigh vacuum, microcrystalline diamond quickly wears into a high friction state 0.6 , which is independent of temperature...

Diamond, Diamond-Like Carbon (DLC) and Diamond-Like Nanocomposite (DLN) Thin Films for MEMS Applications